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LTM4620A

4620afb

For more information www.linear.com/LTM4620A

TYPICAL APPLICATION

DESCRIPTION

Dual 13A or Single 26A

DC/DC µModule Regulator

The LT M

4620A is a complete dual 13A, or single 26A output

switching mode DC/DC power supply with wider V

OUT

range

and higher efficiency than the LTM4620. Included in the

package are the switching controller, power FETs, inductors

and all supporting components. Operating from an input

voltage range of 4.5V to 16V, the LTM4620A supports two

outputs each with an output voltage range of 0.6V to 5.3V,

set by a single external resistor. Its high efficiency design

delivers up to 13A continuous current for each output. Only

a few input and output capacitors are needed.

The device supports frequency synchronization, multiphase

operation, Burst Mode

operation and output voltage

tracking for supply rail sequencing and has an onboard

temperature diode for device temperature monitoring. High

switching frequency and a current mode architecture enable

a very fast transient response to line and load changes

without sacrificing stability.

Fault protection features include overvoltage and

overcurrent protection. The power module is offered

in a proprietary space saving and thermally enhanced

15mm × 15mm × 4.41mm LGA package and 15mm

× 15mm × 5.01mm BGA package. The LTM4620A is

available with SnPb (BGA) or RoHS compliant terminal

finish.

26A, 5V Output DC/DC µModule

Regulator

FEATURES

APPLICATIONS

Dual 13A or Single 26A Output

Wide Input Voltage Range: 4.5V to 16V

Output Voltage Range: 0.6V to 5.3V

±1.5% Maximum Total DC Output Error

Multiphase Current Sharing with Multiple

LTM4620As Up to 100A

Higher Efficiency and Wider V

OUT

Range Than LTM4620

Differential Remote Sense Amplifier

Current Mode Control/Fast Transient Response

Adjustable Switching Frequency

Overcurrent Foldback Protection

Frequency Synchronization

Internal Temperature Monitor

Output Overvoltage Protection

Pin Compatible with the LTM4628 (Dual 8A) and

LTM4620 (Dual 13A)

Thermally Enhanced (15mm × 15mm × 4.41mm)

LGA Package and (15mm × 15mm × 5.01mm) BGA

Package

Telecom and Networking Equipment

Industrial Equipment

5V Efficiency vs I

OUT

TOTAL OUTPUT CURRENT (A)

EFFICIENCY (%)

100

3 5 8 10

4620A TA01b

12 14 19 2116 23

8V TO 5V EFF (650kHz)

12V TO 5V EFF (750kHz)

4620A TA01a

LTM4620A

TEMP

RUN1

RUN2

TRACK1

TRACK2

SET

8.25k

100µF

6.3V

×2

100µF

6.3V

×2

PHASMD

OUT1

OUTS1

SW1

FB1

FB2

COMP1

COMP2

OUTS2

OUT2

OUT

26A

SW2

PGOOD2

PGOOD

MODE_PLLIN CLKOUT INTV

EXTV

PGOOD1

PGOOD

SGND GND DIFFP DIFFN

DIFFOUT

10k*

5.1V*

120k

0.1µF

22µF

25V

×4

4.7µF

INTV

220pF

INTV

OUT

* PULL-UP RESISTOR AND

ZENER ARE OPTIONAL

7V TO 16V

INTV

L, LT , LT C , LTM, Linear Technology, the Linear logo, µModule, Burst Mode and PolyPhase

are registered trademarks and LTpowerCAD is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners. Protected by U.S. Patents,

including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258.

Other patents pending.

Summary of content (40 pages)

PAGE 1
LTM4620A Dual 13A or Single 26A DC/DC µModule Regulator DESCRIPTION FEATURES n n n n n n n n n n n n n n n Dual 13A or Single 26A Output Wide Input Voltage Range: 4.5V to 16V Output Voltage Range: 0.6V to 5.3V ±1.
PAGE 2
LTM4620A ABSOLUTE MAXIMUM RATINGS (Note 1) VIN (Note 8)..................................................–0.3V to 18V VSW1, VSW2.....................................................–1V to 18V PGOOD1, PGOOD2, RUN1, RUN2, INTVCC , EXTVCC........................................... –0.3V to 6V MODE_PLLIN, fSET, TRACK1, TRACK2, DIFFOUT, PHASMD................................ –0.3V to INTVCC VOUT1, VOUT2, VOUTS1, VOUTS2...................... –0.3V to 6V DIFFP, DIFFN..........................................
PAGE 3
LTM4620A ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range. Specified as each individual output channel. TA = 25°C (Note 2), VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted. Per the typical application in Figure 26. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input DC Voltage 4.5 16 V VOUT Output Voltage (Note 8) l 0.6 5.
PAGE 4
LTM4620A ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range. Specified as each individual output channel. TA = 25°C (Note 2), VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted. Per the typical application in Figure 26.
PAGE 5
LTM4620A ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range. Specified as each individual output channel. TA = 25°C (Note 2), VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted. Per the typical application in Figure 26. SYMBOL PARAMETER GBW Gain Bandwidth Product VTEMP Diode Connected PNP TC Temperature Coefficient CONDITIONS MIN TYP 3 I = 100µA 0.
PAGE 6
LTM4620A TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Output Current, VIN = 12V 100 95 95 95 90 90 90 85 5V TO 1V (400kHz) 5V TO 1.2V (400kHz) 5V TO 1.5V (400kHz) 5V TO 1.8V (500kHz) 5V TO 2.5V (500kHz) 5V TO 3.3V (500kHz) 80 75 70 1 2.4 3.8 5.2 6.6 8.0 9.4 10.8 12.2 OUTPUT CURRENT (A) 85 8V TO 1V (400kHz) 8V TO 1.2V (400kHz) 8V TO 1.5V (500kHz) 8V TO 1.8V (600kHz) 8V TO 2.5V (650kHz) 8V TO 3.3V (700kHz) 8V TO 5V (750kHz) TIE 5VOUT TO EXTVCC 80 75 70 1 2.4 3.8 5.2 6.6 8.0 9.4 10.8 12.
PAGE 7
LTM4620A TYPICAL PERFORMANCE CHARACTERISTICS 12V to 5V Load Step Response Output Current Sharing 12V to 1.5V Start-Up, No Load 100mV/DIV 5A/DIV 6A/µs STEP 50µs/DIV 4620A G10 CFF = 47pF COUT = 100µF CERAMIC X7R EACH CHANNEL CURRENT (A) 12 11 10 500mV/DIV 9 8 7 6 5 4 10ms/DIV 12VIN, 1.5VOUT AT NO LOAD COUT = 2 × 470µF, 4V SANYO POSCAP, 1 × 100µF, 6.3V CERAMIC SOFT-START CAPACITOR = 0.
PAGE 8
LTM4620A PIN FUNCTIONS (Recommended to Use Test Points to Monitor Signal Pin Connections.) PACKAGE ROW AND COLUMN LABELING MAY VARY AMONG µModule PRODUCTS. REVIEW EACH PACKAGE LAYOUT CAREFULLY. VOUT1 (A1-A5, B1-B5, C1-C4): Power Output Pins. Apply output load between these pins and GND pins. Recommend placing output decoupling capacitance directly between these pins and GND pins. Review Table 5. See Note 8 in the Electrical Characteristics section for output current guideline.
PAGE 9
LTM4620A PIN FUNCTIONS (Recommended to Use Test Points to Monitor Signal Pin Connections.) RUN1, RUN2 (F5, F9): Run Control Pin. A voltage above 1.25V will turn on each channel in the module. A voltage below 1.25V on the RUN pin will turn off the related channel. Each RUN pin has a 1µA pull-up current, once the RUN pin reaches 1.2V an additional 4.5µA pull-up current is added to this pin. DIFFOUT (F8): Internal Remote Sense Amplifier Output.
PAGE 10
LTM4620A SIMPLIFIED BLOCK DIAGRAM PGOOD1 TRACK1 VIN SS CAP VIN = 100µA VIN RT CIN1 22µF 25V 1µF GND RT TEMP MTOP1 SW1 CLKOUT 0.56µH RUN1 MODE_PLLIN VOUT1 2.2µF MBOT1 PHASEMD CIN2 22µF 25V + GND VOUT1 1.5V/13A COUT1 VOUTS1 COMP1 60.4k VFB1 INTERNAL COMP SGND RFB1 40.2k POWER CONTROL PGOOD2 TRACK2 SS CAP VIN INTVCC CIN3 22µF 25V 1µF 4.7µF GND EXTVCC MTOP2 SW2 0.56µH RUN2 CIN4 22µF 25V VOUT2 2.2µF MBOT2 GND + VOUT2 1.2V/13A COUT2 VOUTS2 60.
PAGE 11
LTM4620A OPERATION Power Module Description The LTM4620A is a dual-output standalone nonisolated switching mode DC/DC power supply. It can provide two 13A outputs with few external input and output capacitors and setup components. This module provides precisely regulated output voltages programmable via external resistors from 0.6VDC to 5.3VDC over 4.5V to 16V input voltages. The typical application schematic is shown in Figure 26.
PAGE 12
LTM4620A APPLICATIONS INFORMATION The typical LTM4620A application circuit is shown in Figure 26. External component selection is primarily determined by the maximum load current and output voltage. Refer to Table 5 for specific external capacitor requirements for particular applications. VIN to VOUT Step-Down Ratios There are restrictions in the maximum VIN and VOUT stepdown ratio that can be achieved for a given input voltage.
PAGE 13
LTM4620A APPLICATIONS INFORMATION Input Capacitors Output Capacitors The LTM4620A module should be connected to a low acimpedance DC source. For the regulator input four 22µF input ceramic capacitors are used for RMS ripple current. A 47µF to 100µF surface mount aluminum electrolytic bulk capacitor can be used for more input bulk capacitance. This bulk input capacitor is only needed if the input source impedance is compromised by long inductive leads, traces or not enough source capacitance.
PAGE 14
LTM4620A APPLICATIONS INFORMATION Burst Mode Operation Forced Continuous Operation The LTM4620A is capable of Burst Mode operation on each regulator in which the power MOSFETs operate intermittently based on load demand, thus saving quiescent current. For applications where maximizing the efficiency at very light loads is a high priority, Burst Mode operation should be applied. Burst Mode operation is enabled with the MODE/PLLIN pin floating.
PAGE 15
LTM4620A APPLICATIONS INFORMATION 2-PHASE DESIGN PHASMD FLOAT CLKOUT 0 PHASE MODE_PLLIN VOUT1 VOUT2 SGND FLOAT CONTROLLER1 0 0 0 CONTROLLER2 180 180 240 CLKOUT 60 90 120 180 PHASE INTVCC PHASMD 4-PHASE DESIGN 90 DEGREE CLKOUT 0 PHASE FLOAT CLKOUT MODE_PLLIN VOUT1 VOUT2 180 PHASE 90 PHASE FLOAT PHASMD MODE_PLLIN VOUT1 VOUT2 270 PHASE PHASMD 6-PHASE DESIGN 60 DEGREE 60 DEGREE CLKOUT 0 PHASE SGND CLKOUT MODE_PLLIN VOUT1 PHASMD VOUT2 180 PHASE 60 PHASE SGND CLKOUT MODE_P
PAGE 16
LTM4620A APPLICATIONS INFORMATION Input RMS Ripple Current Cancellation Application Note 77 provides a detailed explanation of multiphase operation. The input RMS ripple current cancellation mathematical derivations are presented, and a graph is displayed representing the RMS ripple current reduction as a function of the number of interleaved phases. Figure 4 shows this graph.
PAGE 17
LTM4620A APPLICATIONS INFORMATION Minimum On-Time 900 Minimum on-time tON is the smallest time duration that the LTM4620A is capable of turning on the top MOSFET on either channel. It is determined by internal timing delays, and the gate charge required turning on the top MOSFET. Low duty cycle applications may approach this minimum on-time limit and care should be taken to ensure that: 800 FREQUENCY (kHz) 700 600 500 400 300 200 VOUT > tON(MIN) VIN • FREQ 100 0 0 0.5 1 1.
PAGE 18
LTM4620A APPLICATIONS INFORMATION INTVCC INTVCC C10 4.7µF R2 10k PGOOD MODE_PLLIN 7V TO 16V INTERMEDIATE BUS VIN C4 22µF 25V R1* 10k C3 22µF 25V C2 22µF 25V C1 22µF 25V R6 100k CLKOUT INTVCC EXTVCC TEMP VOUTS1 RUN1 SW1 RUN2 VFB1 TRACK1 D1* 5.1V ZENER RTB 60.4k VOUT1 1.5V RTA 60.4k MASTER C6 100µF 6.3V VFB2 LTM4620A TRACK2 CSS 0.1µF PGOOD1 VOUT1 VIN RFB 60.4k COMP1 f SET COMP2 PHASMD VOUTS2 VOUT2 R4 121k PGOOD2 GND DIFFP DIFFN DIFFOUT VOUT1 1.5V AT 13A 40.
PAGE 19
LTM4620A APPLICATIONS INFORMATION The TRACK pin can be controlled by a capacitor placed on the regulator TRACK pin to ground. A 1.3µA current source will charge the TRACK pin up to the reference voltage and then proceed up to INTVCC. After the 0.6V ramp, the TRACK pin will no longer be in control, and the internal voltage reference will control output regulation from the feedback divider. Foldback current limit is disabled during this sequence of turn-on during tracking or soft-starting.
PAGE 20
LTM4620A APPLICATIONS INFORMATION controlled from a single control. See the Typical Application circuits in Figure 26. INTVCC and EXTVCC The LTM4620A module has an internal 5V low dropout regulator that is derived from the input voltage. This regulator is used to power the control circuitry and the power MOSFET drivers. This regulator can source up to 70mA, and typically uses ~30mA for powering the device at the maximum frequency. This internal 5V supply is enabled by either RUN1 or RUN2.
PAGE 21
LTM4620A APPLICATIONS INFORMATION If we take the IS equation and substitute into the VD equation, then we get: VD = VG0 –  Kt  I0  kT ln ,V =  q   ID T  q  The expression shows that the junction voltage of the PNP connected diode decreases linearly if Io were constant from a value VG0 of 1.2V at absolute zero to a decreasing value with increased temperature.
PAGE 22
LTM4620A APPLICATIONS INFORMATION conditions to compliment any FEA activities. Without FEA software, the thermal resistances reported in the Pin Configuration section are in-and-of themselves not relevant to providing guidance of thermal performance; instead, the derating curves provided in the data sheet can be used in a manner that yields insight and guidance pertaining to one’s application-usage, and can be adapted to correlate thermal performance to one’s own application.
PAGE 23
LTM4620A APPLICATIONS INFORMATION Within a SIP (system-in-package) module, be aware there are multiple power devices and components dissipating power, with a consequence that the thermal resistances relative to different junctions of components or die are not exactly linear with respect to total package power loss.
PAGE 24
LTM4620A APPLICATIONS INFORMATION The LTM4620A module has been designed to effectively remove heat from both the top and bottom of the package. The bottom substrate material has very low thermal resistance to the printed circuit board and the exposed top metal is thermally connected to the power devices and the power inductors. An external heat sink can be applied to the top of the device for excellent heat sinking with airflow.
PAGE 25
LTM4620A APPLICATIONS INFORMATION The device does support over current protection. A temperature diode is provided for monitoring internal temperature, and can be used to detect the need for thermal shutdown that can be done by controlling the RUN pin. Power Derating The 1V, 2.
PAGE 26
LTM4620A APPLICATIONS INFORMATION Table 2. 1.0V Output VIN (V) 5, 12 5, 12 5, 12 5, 12 5, 12 5, 12 POWER LOSS CURVE Figure 12 Figure 12 Figure 12 Figure 12 Figure 12 Figure 12 AIRFLOW (LFM) 0 200 400 0 200 400 HEAT SINK None None None BGA Heat Sink BGA Heat Sink BGA Heat Sink LGA ΘJA (°C/W) 6.5 to 7 5.5 5 6.5 5 4 BGA ΘJA (°C/W) 6.5 to 7 5.5 5 6.
PAGE 27
LTM4620A APPLICATIONS INFORMATION Table 5. Output Voltage Response vs Component Matrix (Refer to Figure 23) 0A to 7A Load Step Typical Measured Values VENDORS TDK, COUT1 Ceramic Murata, COUT1 Ceramic AVX, COUT1 Ceramic VALUE 100µF 6.3V 100µF 6.3V 100µF 6.3V PART NUMBER C4532X5R0J107MZ GRM32ER60J107M 18126D107MAT ESR ~1mΩ ~1mΩ ~1mΩ Sanyo POSCAP, COUT2 Bulk 470µF 2R5 2R5TPD470M5 9mΩ 9mΩ Sanyo POSCAP, COUT2 Bulk 470µF 6.
PAGE 28
LTM4620A APPLICATIONS INFORMATION 5 4 3 2 1 8 12V TO 1V POWER LOSS CURVE 5V TO 1V POWER LOSS CURVE 6 POWER LOSS (W) POWER LOSS (W) 6 0 7 12V TO 2.5V POWER LOSS CURVE 5V TO 2.5V POWER LOSS CURVE 6 5 4 3 2 0 2 3 5 6 8 9 10 12 13 15 16 17 19 20 22 23 24 26 0 3 5 6 8 9 10 12 13 15 16 17 19 20 22 23 24 26 LOAD CURRENT (A) 4620A F13 Figure 13. 1V Power Loss Curve LOAD CURRENT (A) Figure 12. 2.
PAGE 29
LTM4620A 30 30 25 25 LOAD CURRENT (A) LOAD CURRENT (A) APPLICATIONS INFORMATION 20 15 10 400LFM 200LFM 0LFM 5 0 0 20 20 15 10 400LFM 200LFM 0LFM 5 80 100 120 40 60 AMBIENT TEMPERATURE (°C) 0 140 0 20 80 100 120 40 60 AMBIENT TEMPERATURE (°C) 4620A F19 4620A F20 Figure 20. 5V to 2.5V Derating Curve, No Heat Sink 30 30 25 25 LOAD CURRENT (A) LOAD CURRENT (A) Figure 19. 12V to 2.
PAGE 30
LTM4620A APPLICATIONS INFORMATION Layout Checklist/Example The high integration of LTM4620A makes the PCB board layout very simple and easy. However, to optimize its electrical and thermal performance, some layout considerations are still necessary. • Use large PCB copper areas for high current paths, including VIN, GND, VOUT1 and VOUT2. It helps to minimize the PCB conduction loss and thermal stress.
PAGE 31
LTM4620A APPLICATIONS INFORMATION LGA CIN1 CIN2 VIN M L K GND GND J H G COUT1 SGND F COUT2 E D C B A 1 2 3 4 5 6 VOUT1 7 8 9 10 11 12 GND VOUT2 4620A F25A CNTRL CNTRL BGA CIN1 CIN2 VIN M L K GND GND J H G COUT1 SGND F COUT2 E D C B A 1 2 3 4 5 VOUT1 6 7 8 9 10 11 12 GND VOUT2 4620A F25b CNTRL CNTRL Figure 25. Recommended PCB Layout 4620afb For more information www.linear.
PAGE 32
VIN + CIN (OPT) C4 22µF 25V 32 C2 22µF 25V C9 0.1µF TRACK2 C1 22µF 25V R4 121k R7 100k For more information www.linear.com/LTM4620A DIFFN VFB2 TRACK1 SGND VOUTS2 PHASMD PGOOD2 DIFFOUT SW2 VOUT2 COMP2 fSET DIFFP VFB1 RUN2 COMP1 SW1 RUN1 TRACK2 VOUTS1 TEMP GND EXTVCC PGOOD1 VOUT1 LTM4620A CLKOUT INTVCC R2 10k VIN MODE_PLLIN C10 4.7µF INTVCC Figure 26. Typical 5VIN to 16VIN, 1.5V and 1.2V Outputs *PULL-UP RESISTOR AND ZENER ARE OPTIONAL **SEE TABLE 5 D1* TRACK1 5.
PAGE 33
For more information www.linear.com/LTM4620A C3 22µF 25V D1* 5.1V ZENER R1* 10k 100µA VIN – 0.6V TRACK1 C11 22µF 25V C2 22µF 25V RT SGND DIFFN VOUTS2 DIFFOUT PGOOD2 SW2 VOUT2 COMP2 PHASMD COMP1 fSET TRACK2 DIFFP VFB1 RUN2 VFB2 SW1 RUN1 TRACK1 VOUT1 VOUTS1 GND EXTVCC PGOOD1 R2 5k INTVCC TEMP LTM4620A CLKOUT INTVCC 5V C10 4.7µF VIN MODE_PLLIN INTVCC PGOOD1 R5 8.25k PGOOD1 Figure 27. LTM4620A 2-Phase, 5V at 20A Design with Temperature Monitoring C9 INTVCC 0.
PAGE 34
VIN 34 For more information www.linear.com/LTM4620A R1* 10k R9 60.4k C2 22µF 25V VOUT1 3.3V C5 0.1µF C3 22µF 25V R7 90.9k C1 22µF 25V INTVCC R6 100k R2 10k DIFFN VFB2 TRACK1 SGND VOUTS2 PHASMD DIFFOUT PGOOD2 SW2 VOUT2 COMP2 fSET DIFFP VFB1 GND SW1 RUN2 COMP1 VOUTS1 RUN1 TRACK2 VOUT1 VIN TEMP LTM4620A CLKOUT INTVCC EXTVCC PGOOD1 C10 4.7µF INTVCC Figure 28. LTM4620A 3.3V and 2.5V Output Tracking * PULL-UP RESISTOR AND ZENER ARE OPTIONAL D1* 5.
PAGE 35
LTM4620A TYPICAL APPLICATIONS INTVCC1 INTVCC C10 4.7µF CLK1 MODE_PLLIN 5V TO 16V INTERMEDIATE BUS VIN R1* 10k C3 22µF 25V C2 22µF 25V C1 22µF 25V R6 100k CLKOUT INTVCC PGOOD1 EXTVCC PGOOD1 VOUT1 VIN TEMP SW1 VFB VFB1 TRACK1 C20 0.22µF VFB2 LTM4620A TRACK2 INTVCC1 220pF VOUTS1 RUN1 RUN2 D1* 5.1V ZENER R2 5k R5 13.3k COMP1 fSET COMP2 PHASMD VOUTS2 COMP VOUT2 SW2 PGOOD2 SGND GND DIFFP DIFFN VOUT 3.3V 50A COUT1 100µF 6.3V ×2 PGOOD1 DIFFOUT COUT2 100µF 6.3V ×2 INTVCC2 C16 4.
PAGE 36
LTM4620A PACKAGE DESCRIPTION PACKAGE ROW AND COLUMN LABELING MAY VARY AMONG µModule PRODUCTS. REVIEW EACH PACKAGE LAYOUT CAREFULLY.
PAGE 37
For more information www.linear.com/LTM4620A 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 4 PACKAGE TOP VIEW 3.1750 3.1750 SUGGESTED PCB LAYOUT TOP VIEW 1.9050 PAD 1 CORNER D 0.6350 0.0000 0.6350 aaa Z 1.9050 X E Y bbb Z 0.36 3.95 MIN 4.31 0.60 H1 SUBSTRATE NOM 4.41 0.63 15.00 15.00 1.27 13.97 13.97 0.41 4.00 DIMENSIONS eee S X Y Z 0.46 4.05 0.15 0.10 0.05 MAX 4.51 0.
PAGE 38
0.630 ±0.025 Ø 144x 4 PACKAGE TOP VIEW 3.1750 3.1750 SUGGESTED PCB LAYOUT TOP VIEW 1.9050 PIN “A1” CORNER D 0.6350 0.0000 0.6350 aaa Z 1.9050 X For more information www.linear.com/LTM4620A 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 E Y aaa Z SYMBOL A A1 A2 b b1 D E e F G H1 H2 aaa bbb ccc ddd eee H1 SUBSTRATE NOM 5.01 0.60 4.41 0.75 0.63 15.00 15.00 1.27 13.97 13.97 0.41 4.00 MAX 5.21 0.70 4.51 0.90 0.
PAGE 39
LTM4620A REVISION HISTORY REV DATE DESCRIPTION A 10/13 Added explanation for TEMP pin PAGE NUMBER B 03/14 Changed TEMP explanation and formulas Add SnPb BGA package option 11 20, 21 1, 2 4620afb Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representaFor more information www.linear.
PAGE 40
LTM4620A PACKAGE PHOTO LGA BGA 4.41mm 15mm 15mm RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTM4628 Dual 8A, Single 16A µModule Regulator Pin Compatible with LTM4620A; 4.5V ≤ VIN ≤ 26.5V, 0.6V ≤ VOUT ≤ 5.5V, 15mm × 15mm × 4.32mm LTM4627 15A µModule Regulator 4.5V ≤ VIN ≤ 20V, 0.6V ≤ VOUT ≤ 5.5V, 15mm × 15mm × 4.32mm LTM4611 Ultralow VIN, 15A µModule Regulator 1.5V ≤ VIN ≤ 5.5V, 0.8V ≤ VOUT ≤ 5V, 15mm × 15mm × 4.32mm LTM4620 Dual 13A or Single 26A Lower Output Voltage Range, 0.6V to 2.