Datasheet

ManualsBrandsANALOG DEVICES ManualsPMICsPMIC - LDO voltage regulator Positive, fixed WLCSP 4 (0.82x0.82)

150 mA, Low Quiescent Current,

CMOS Linear Regulator

Data Sheet

ADP121

Rev. G

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

FEATURES

Input voltage range: 2.3 V to 5.5 V

Output voltage range: 1.2 V to 3.3 V

Output current: 150 mA

Low quiescent current

GND

= 11 µA with 0 A load

GND

= 30 µA with 150 mA load

Low shutdown current: <1 µA

Low dropout voltage

90 mV @ 150 mA load

High PSRR

70 dB @ 1 kHz at V

OUT

= 1.2 V

70 dB @ 10 kHz at V

OUT

= 1.2 V

Low noise: 40 µV rms at V

OUT

= 1.2 V

No noise bypass capacitor required

Output voltage accuracy: ±1%

Stable with a small 1 µF ceramic output capacitor

Current limit and thermal overload protection

Logic controlled enable

5-lead TSOT package

4-ball 0.4 mm pitch WLCSP

APPLICATIONS

Mobile phones

Digital cameras and audio devices

Portable and battery-powered equipment

Post dc-to-dc regulation

Post regulation

TYPICAL APPLICATION CIRCUITS

NC = NO CONNECT

06901-001

OUT

1µF

OUT

= 1.8VV

= 2.3V

VOUT

VIN

GND

OFF

Figure 1. ADP121 TSOT with Fixed Output Voltage, 1.8 V

VIN VOUT

EN GND

06901-002

OUT

1µF

OUT

= 1.8V

= 2.3V

OFF

Figure 2. ADP121 WLCSP with Fixed Output Voltage, 1.8 V

GENERAL DESCRIPTION

The ADP121 is a quiescent current, low dropout, linear regulator

that operates from 2.3 V to 5.5 V and provides up to 150 mA of

output current. The low 135 mV dropout voltage at 150 mA

load improves efficiency and allows operation over a wide

input voltage range. The low 30 A of quiescent current at full

load makes the ADP121 ideal for battery-operated portable

equipment.

The ADP121 is available in output voltages ranging from 1.2 V

to 3.3 V. The parts are optimized for stable operation with small

1 µF ceramic output capacitors. The ADP121 delivers good

transient performance with minimal board area.

Short-circuit protection and thermal overload protection circuits

prevent damage in adverse conditions. The ADP121 is available

in a tiny 5-lead TSOT and 4-ball 0.4 mm pitch halide-free

WLCSP packages and utilizes the smallest footprint solution to

meet a variety of portable applications.

Summary of content (20 pages)

PAGE 1
Input voltage range: 2.3 V to 5.5 V Output voltage range: 1.2 V to 3.3 V Output current: 150 mA Low quiescent current IGND = 11 μA with 0 μA load IGND = 30 μA with 150 mA load Low shutdown current: <1 μA Low dropout voltage 90 mV @ 150 mA load High PSRR 70 dB @ 1 kHz at VOUT = 1.2 V 70 dB @ 10 kHz at VOUT = 1.2 V Low noise: 40 μV rms at VOUT = 1.
PAGE 2
ADP121 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 11 Typical Application Circuits.......................................................
PAGE 3
Data Sheet ADP121 SPECIFICATIONS VIN = (VOUT + 0.5 V) or 2.3 V, whichever is greater; EN = VIN; IOUT = 10 mA; CIN = COUT = 1 µF; TA = 25°C, unless otherwise noted. Table 1.
PAGE 4
ADP121 Parameter POWER SUPPLY REJECTION RATIO Data Sheet Symbol PSRR Conditions 10 kHz, VIN = 5 V, VOUT = 3.3 V 10 kHz, VIN = 5 V, VOUT = 2.5 V 10 kHz, VIN = 5 V, VOUT = 1.2 V Min Typ 60 66 70 Max Unit dB dB dB 1 Based on an end-point calculation using 1 mA and 100 mA loads. See Figure 6 for typical load regulation performance for loads less than 1 mA. Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage.
PAGE 5
Data Sheet ADP121 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND VOUT to GND EN to GND Storage Temperature Range Operating Junction Temperature Range Soldering Conditions Rating −0.3 V to +6.5 V −0.3 V to VIN −0.3 V to +6.5 V −65°C to +150°C −40°C to +125°C JEDEC J-STD-020 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 6
ADP121 Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 5 VOUT A TOP VIEW GND 2 (Not to Scale) VIN VOUT TOP VIEW (Not to Scale) 4 NC = NO CONNECT NC 06901-003 EN 3 2 B Figure 3. 5-Lead TSOT Pin Configuration EN GND 06901-004 VIN 1 1 Figure 4. 4-Ball WLCSP Pin Configuration Table 5. Pin Function Descriptions Pin No. TSOT WLCSP 1 A1 2 B2 3 B1 Mnemonic VIN GND EN 4 5 NC VOUT N/A A2 Description Regulator Input Supply. Bypass VIN to GND with a 1 µF or larger capacitor. Ground.
PAGE 7
Data Sheet ADP121 TYPICAL PERFORMANCE CHARACTERISTICS VIN = 2.3 V, VOUT = 1.8 V, IOUT = 10 mA, CIN = COUT = 1 µF, TA = 25°C, unless otherwise noted. 1.804 40 VOUT = 1.8V VIN = 2.3V GROUND CURRENT (µA) 1.800 1.796 1.794 ILOAD ILOAD ILOAD ILOAD ILOAD ILOAD 1.790 1.788 = 10µA = 100µA = 1mA = 10mA = 100mA = 150mA 25 20 15 25°C 85°C 0 06901-005 –5°C 125°C TJ (°C) –40°C 85°C 125°C 35 VOUT = 1.8V VIN = 2.3V TA = 25°C GROUND CURRENT (µA) 30 1.802 1.800 1.798 1.796 VOUT = 1.8V VIN = 2.
PAGE 8
ADP121 Data Sheet 0.35 140 0.25 120 100 VDROPOUT (mV) 0.30 0.20 0.15 80 60 VOUT = 2.5V 0.10 40 0.05 20 VOUT = 3.3V –25 0 25 50 75 TEMPERATURE (°C) 100 125 0 1 10 100 06901-012 0 –50 06901-011 SHUTDOWN CURRENT (µA) TA = 25°C VIN = 2.30 VIN = 2.50 VIN = 3.00 VIN = 3.50 VIN = 4.20 VIN = 5.50 1000 ILOAD (mA) Figure 14. Dropout Voltage vs. Load Current, WLCSP Figure 11. Shutdown Current vs. Temperature at Various Input Voltages 3.35 VOUT = 3.3V TA = 25°C 180 TA = 25°C 3.
PAGE 9
Data Sheet ADP121 0 0 3.3V/150mA 3.3V/100µA VRIPPLE = 50mV VIN = 5V VOUT = 1.2V COUT = 1µF –10 –20 1.8V/150mA 1.8V/100µA –20 150mA 100mA 10mA 1mA 100µA 0µA –40 –50 –40 PSRR (dB) –30 PSRR (dB) 1.2V/150mA 1.2V/100µA –60 –60 –80 –70 –80 –100 100 1k 10k 100k FREQUENCY (Hz) 1M 10M –120 10 06901-014 –100 10 Figure 17. Power Supply Rejection Ratio vs. Frequency 1k 10k 100k FREQUENCY (Hz) 1M 10M Figure 20. Power Supply Rejection Ratio vs.
PAGE 10
Data Sheet 1mA TO 150mA LOAD STEP, 2.5A/µs VIN ILOAD (1V/DIV) (150mA/DIV) ADP121 4V TO 5V INPUT VOLTAGE STEP, 2V/µs VOUT = 1.8V, CIN = COUT = 1µF (1V/DIV) ILOAD (40µs/DIV) (10mV/DIV) VOUT VIN = 5V VOUT = 1.8V 06901-037 (4µs/DIV) 06901-025 (150mA/DIV) (50mV/DIV) VOUT = 1.8V, CIN = COUT = 1µF Figure 25. Line Transient Response, Load Current = 150 mA Figure 23. Load Transient Response, CIN = COUT = 1 μF 1mA TO 150mA LOAD STEP, 2.
PAGE 11
Data Sheet ADP121 THEORY OF OPERATION The ADP121 is a low quiescent current, low dropout linear regulator that operates from 2.3 V to 5.5 V and provides up to 150 mA of output current. Drawing a low 30 μA quiescent current (typical) at full load makes the ADP121 ideal for batteryoperated portable equipment. Shutdown current consumption is typically 100 nA. Optimized for use with small 1 µF ceramic capacitors, the ADP121 provides excellent transient performance.
PAGE 12
ADP121 Data Sheet APPLICATIONS INFORMATION CAPACITOR SELECTION Input Bypass Capacitor Output Capacitor Connecting a 1 µF capacitor from VIN to GND reduces the circuit sensitivity to the PCB layout, especially when long input traces or high source impedance is encountered. If output capacitance greater than 1 µF is required, the input capacitor should be increased to match it.
PAGE 13
Data Sheet ADP121 (1) where: CBIAS is the effective capacitance at the operating voltage. TEMPCO is the worst-case capacitor temperature coefficient. TOL is the worst-case component tolerance. In this example, TEMPCO over −40°C to +85°C is assumed to be 15% for an X5R dielectric. TOL is assumed to be 10%, and CBIAS is 0.94 μF at 1.8 V from the graph in Figure 30. Substituting these values in Equation 1 yields CEFF = 0.94 μF × (1 − 0.15) × (1 − 0.1) = 0.
PAGE 14
ADP121 Data Sheet CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION The ADP121 is protected against damage due to excessive power dissipation by current and thermal overload protection circuits. The ADP121 is designed to current limit when the output load reaches 225 mA (typical). When the output load exceeds 225 mA, the output voltage is reduced to maintain a constant current limit. Thermal overload protection is built-in, which limits the junction temperature to a maximum of 150°C (typical).
PAGE 15
Data Sheet ADP121 140 140 MAX JUNCTION TEMPERATURE 40 20 0 0.5 1.0 1.5 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 80 60 40 20 0 0.5 Figure 34. TSOT, 500 mm2 of PCB Copper, TA = 25°C JUNCTION TEMPERATURE, TJ (°C) ILOAD = 1mA ILOAD = 10mA ILOAD = 25mA ILOAD = 50mA ILOAD = 75mA ILOAD = 100mA ILOAD = 150mA 60 40 20 0 0.5 1.0 1.5 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 60 40 20 1.0 = 1mA = 10mA = 25mA = 50mA 1.5 ILOAD = 75mA ILOAD = 100mA ILOAD = 150mA 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.
PAGE 16
ADP121 Data Sheet 140 140 100 80 = 1mA = 10mA = 25mA = 50mA = 75mA = 100mA = 150mA 60 40 20 0 0.5 1.0 1.5 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 120 100 80 60 40 ILOAD ILOAD ILOAD ILOAD 20 0 0.5 Figure 40. WLCSP, 500 mm2 of PCB Copper, TA = 25°C 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 140 MAX JUNCTION TEMPERATURE 80 60 40 20 0 0.5 1.0 1.5 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 100 80 60 40 0 0.5 Figure 41.
PAGE 17
Data Sheet ADP121 140 GND GND ANALOG DEVICES ADP121-xx-EVALZ JUNCTION TEMPERATURE, TJ (°C) MAX JUNCTION TEMPERATURE 120 100 C1 60 40 20 C2 U1 80 ILOAD ILOAD ILOAD ILOAD ILOAD ILOAD ILOAD = 1mA = 10mA = 25mA = 50mA = 75mA = 100mA = 150mA J1 0 0.5 1.0 1.5 2.0 2.5 3.0 VIN – VOUT (V) 3.5 4.0 4.5 VOUT 06901-048 VIN Figure 46. TSOT, 100 mm2 of PCB Copper, Board Temperature = 85°C GND EN GND Figure 48. Example of TSOT PCB Layout 100 80 60 40 20 0 0.
PAGE 18
ADP121 Data Sheet OUTLINE DIMENSIONS 2.90 BSC 5 4 2.80 BSC 1.60 BSC 1 2 3 0.95 BSC 1.90 BSC *0.90 MAX 0.70 MIN 0.10 MAX 0.50 0.30 0.20 0.08 8° 4° 0° SEATING PLANE 0.60 0.45 0.30 100708-A *1.00 MAX *COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 51. 5-Lead Thin Small Outline Transistor Package [TSOT] (UJ-5) Dimensions show in millimeters 0.860 0.820 SQ 0.780 2 1 A BALL A1 IDENTIFIER B 0.
PAGE 19
Data Sheet ADP121 ORDERING GUIDE Model1 ADP121-AUJZ12R7 ADP121-AUJZ15R7 ADP121-AUJZ18R7 ADP121-AUJZ20R7 ADP121-AUJZ25R7 ADP121-AUJZ28R7 ADP121-AUJZ30R7 ADP121-AUJZ33R7 ADP121-ACBZ12R7 ADP121-ACBZ15R7 ADP121-ACBZ165R7 ADP121-ACBZ18R7 ADP121-ACBZ188R7 ADP121-ACBZ20R7 ADP121-ACBZ25R7 ADP121-ACBZ28R7 ADP121-ACBZ30R7 ADP121-ACBZ33R7 ADP121CB-1.2-EVALZ ADP121CB-1.5-EVALZ ADP121CB-1.8-EVALZ ADP121CB-2.0-EVALZ ADP121CB-2.5-EVALZ ADP121CB-2.8-EVALZ ADP121CB-3.0-EVALZ ADP121CB-3.