Datasheet

ManualsBrandsANALOG DEVICES ManualsPMICsPMIC - LDO voltage regulator Positive, fixed WLCSP 6 (1.45x0.95)

Dual, 200 mA, Low Noise,

High PSRR Voltage Regulator

Data Sheet

ADP220/ADP221

Rev. H Document Feedback

Informati

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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

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FEATURES

Input voltage range: 2.5 V to 5.5 V

Dual independent 200 mA low dropout voltage regulators

Miniature 6-ball, 1.0 mm × 1.5 mm WLCSP and 6-ball

bumped bare die

Initial accuracy: ±1%

Stable with 1 µF ceramic output capacitors

No noise bypass capacitor required

Two independent logic controlled enables

Overcurrent and thermal protection

Active output pull-down (ADP221)

Key specifications

High PSRR

76 dB PSRR up to 1 kHz

70 dB PSRR at 10 kHz

60 dB PSRR at 100 kHz

40 dB PSRR at 1 MHz

Low output noise

27 µV rms typical output noise at V

OUT

= 1.2 V

50 µV rms typical output noise at V

OUT

= 2.8 V

Excellent transient response

Low dropout voltage: 150 mV @ 200 mA load

60 µA typical ground current at no load, both LDOs enabled

100 µs fast turn-on circuit

Guaranteed 200 mA output current per regulator

−40°C to +125°C junction temperature

APPLICATIONS

Mobile phones

Digital cameras and audio devices

Portable and battery-powered equipment

Portable medical devices

Post dc-to-dc regulation

TYPICAL APPLICATION CIRCUITS

EN1 VOUT1

GND

VIN

EN2 VOUT2

TOP VIEW

(Not to Scale)

OUT1

= 2.8V

1µF

= 3.3V

OUT2

= 2.8V

07572-001

OFF

Figure 1. Typical Application Circuit

THERMAL

SHUTDOWN

EN1

EN2

GND

CURRENT

LIMIT

CURRENT

LIMIT

60Ω

REFERENCE

ADP221

ONLY

CONTROL

LOGIC

AND

ENABLE

VIN VOUT1

VOUT2

ADP220

07572-002

Figure 2. Block Diagram of the ADP220/ADP221

GENERAL DESCRIPTION

The 200 mA dual output ADP220/ADP221 combine high PSRR,

low noise, low quiescent current, and low dropout voltage in a

voltage regulator ideally suited for wireless applications with

demanding performance and board space requirements.

The low quiescent current, low dropout voltage, and wide input

voltage range of the ADP220/ADP221 extend the battery life of

portable devices. The ADP220/ADP221 maintain power supply

rejection greater than 60 dB for frequencies as high as 100 kHz

while operating with a low headroom voltage. The ADP220

offers much lower noise performance than competing LDOs

without the need for a noise bypass capacitor. The ADP221 also

includes an active pull-down to quickly discharge output loads.

The ADP220/ADP221 are available in a miniature 6-ball

WLCSP package and 6-ball bumped bare die and is stable with

tiny 1 µF ± 30% ceramic output capacitors, resulting in the smallest

possible board area for a wide variety of portable power needs.

The ADP220/ADP221 are available in many output voltage

combinations, ranging from 0.8 V to 3.3 V, and offer overcur-

rent and thermal protection to prevent damage in adverse

conditions.

Summary of content (20 pages)

PAGE 1
Dual, 200 mA, Low Noise, High PSRR Voltage Regulator ADP220/ADP221 Data Sheet FEATURES TYPICAL APPLICATION CIRCUITS A EN1 VOUT1 VOUT1 = 2.8V 1µF B VIN = 3.3V GND VIN 1µF TOP VIEW (Not to Scale) ON OFF C VOUT2 = 2.8V EN2 VOUT2 1µF Figure 1.
PAGE 2
ADP220/ADP221 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 11 Typical Application Circuits................................................
PAGE 3
Data Sheet ADP220/ADP221 SPECIFICATIONS VIN = (VOUT + 0.5 V) or 2.5 V (whichever is greater), EN1 = EN2 = VIN, IOUT1 = IOUT2 = 10 mA, CIN = COUT1 = COUT2 = 1 µF, TA = 25°C, unless otherwise noted. Table 1.
PAGE 4
ADP220/ADP221 Parameter POWER SUPPLY REJECTION RATIO Data Sheet Symbol PSRR Conditions VIN = 2.5 V, VOUT = 0.8 V, IOUT = 100 mA 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz VIN = 3.8 V, VOUT = 2.8 V, IOUT = 100 mA 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz Min Typ Max Unit 76 76 70 60 40 dB dB dB dB dB 68 68 68 60 40 dB dB dB dB dB Based on an end-point calculation using 1 mA and 200 mA loads.
PAGE 5
Data Sheet ADP220/ADP221 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND VOUT1, VOUT2 to GND EN1, EN2 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
ADP220/ADP221 Data Sheet A B C 1 2 EN1 VOUT1 GND VIN EN2 VOUT2 TOP VIEW (BALL SIDE DOWN) Not to Scale 07572-003 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Figure 3. Pin Configuration Table 5. Pin Function Descriptions Pin No. A1 Mnemonic EN1 B1 C1 GND EN2 A2 B2 C2 VOUT1 VIN VOUT2 Description Enable Input for Regulator 1. Drive EN1 high to turn on Regulator 1; drive it low to turn off Regulator 1. For automatic startup, connect EN1 to VIN. Ground Pin. Enable Input for Regulator 2.
PAGE 7
Data Sheet ADP220/ADP221 TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3 V, VOUT1 = VOUT2 = 2.8 V, IOUT = 10 mA, CIN = COUT1 = COUT2 = 1 µF, TA = 25°C, unless otherwise noted. 140 2.85 120 2.81 2.79 100 80 60 ILOAD ILOAD ILOAD ILOAD ILOAD ILOAD 40 2.77 20 –5 25 85 125 0 JUNCTION TEMPERATURE (°C) Figure 4. Output Voltage vs. Junction Temperature 100 GROUND CURRENT (µA) 2.79 VOUT = 2.8V VIN = 3.3V TA = 25°C 80 60 40 20 0.1 1 10 100 1k LOAD CURRENT (mA) 0 0.01 07572-005 2.75 0.
PAGE 8
Data Sheet 160 0.9 140 0.8 SHUTDOWN CURRENT (µA) 120 100 80 60 ILOAD = 10µA ILOAD= 100µA ILOAD = 1mA ILOAD = 10mA ILOAD = 100mA ILOAD = 200mA 40 20 25 85 125 JUNCTION TEMPERATURE (°C) Figure 10. Ground Current vs. Junction Temperature, Both Outputs Loaded 0.4 0.3 0.2 0 –25 25 50 75 100 125 Figure 13. Shutdown Current vs. Temperature at Various Input Voltages 250 2.5V 2.8V 3.3V VOUT = 2.8V VIN = 3.3V TA = 25°C 200 DROPOUT VOLTAGE (mV) GROUND CURRENT (µA) 0.
PAGE 9
Data Sheet ADP220/ADP221 180 –10 160 VRIPPLE = 50mV –20 VIN = 2.5V VOUT = 0.8V –30 COUT = 1µF –40 PSRR (dB) 120 100 80 20 0 2.6 = 1mA = 5mA = 10mA = 50mA = 100mA = 200mA 2.7 –90 –100 2.8 2.9 3.0 3.1 –110 10 1k 10k 100k 1M 10M Figure 19. Power Supply Rejection Ratio vs. Frequency, 0.8 V 0 –10 VRIPPLE = 50mV –20 VIN = 3.8V VOUT = 2.8V –30 COUT = 2.2µF 200mA 100mA 10mA 1mA 100µA –10 3.3V/200mA 0.8V/200mA 1.8V/200mA 3.3V/100µA 0.8V/100µA 1.
PAGE 10
ADP220/ADP221 Data Sheet 60 T VIN 50 VOUT1 40 NOISE (µV rms) VIN = 4V TO 5V, ILOAD1 = 200mA, ILOAD2 = 100mA 2 30 VOUT2 20 0 0.001 0.01 0.1 1 10 100 07572-022 10 1k LOAD CURRENT (mA) CH1 1.00V BW CH2 5.00mV Figure 22. Output Noise vs. Load Current and Output Voltage, VIN = 5 V T W B W M20.0μs A CH1 T 13.60% 4.46V Figure 25.
PAGE 11
Data Sheet ADP220/ADP221 THEORY OF OPERATION The ADP220/ADP221 are low quiescent current, low dropout linear regulators that operate from 2.5 V to 5.5 V and provide up to 200 mA of current from each output. Drawing a low 120 μA quiescent current (typical) at full load makes the ADP220/ ADP221 ideal for battery-operated portable equipment. Shutdown current consumption is typically 100 nA.
PAGE 12
ADP220/ADP221 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 are encountered. If an output capacitance greater than 1 µF is required, the input capacitor should be increased to match it.
PAGE 13
Data Sheet ADP220/ADP221 (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 31. Substituting these values into Equation 1 yields CEFF = 0.94 μF × (1 − 0.15) × (1 − 0.1) = 0.
PAGE 14
ADP220/ADP221 Data Sheet CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION The ADP220/ADP221 are protected against damage due to excessive power dissipation by current and thermal overload protection circuits. The ADP220/ADP221 are designed to current limit when the output load reaches 300 mA (typical). When the output load exceeds 300 mA, the output voltage is reduced to maintain a constant current limit.
PAGE 15
Data Sheet ADP220/ADP221 145 135 135 105 95 85 75 65 55 500mm 2 50mm 2 0mm2 TJMAX 45 35 25 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 TOTAL POWER DISSIPATION (W) Figure 35. Junction Temperature vs. Total Power Dissipation, TA = 25°C 105 500mm 2 50mm 2 0mm2 TJMAX 95 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 TOTAL POWER DISSIPATION (W) Figure 38. Junction Temperature vs. Total Power Dissipation, TA = 85°C 140 130 110 100 90 80 70 500mm 2 50mm 2 0mm2 TJMAX 60 0.1 0.2 0.
PAGE 16
ADP220/ADP221 Data Sheet PRINTED CIRCUIT BOARD (PCB) LAYOUT CONSIDERATIONS Heat dissipation from the package can be improved by increasing the amount of copper attached to the pins of the ADP220/ADP221. However, as shown in Table 6, a point of diminishing returns eventually is reached, beyond which an increase in the copper size does not yield significant heat dissipation benefits. 07572-040 Place the input capacitor as close as possible to the VIN and GND pins.
PAGE 17
Data Sheet ADP220/ADP221 OUTLINE DIMENSIONS 1.000 0.950 0.900 2 1 A BALL A1 IDENTIFIER 1.500 1.450 1.400 1.00 REF C 0.50 BSC TOP VIEW (BALL SIDE DOWN) 0.50 BSC BOTTOM VIEW 0.380 0.355 0.330 SIDE VIEW (BALL SIDE UP) COPLANARITY 0.075 0.345 0.295 0.245 SEATING PLANE 0.270 0.240 0.210 11-08-2012-B 0.675 0.595 0.515 B Figure 42. 6-Ball Wafer Level Chip Scale Package [WLCSP] (CB-6-2) Dimensions show in millimeters 1.00 0.96 0.92 2 1 A BALL A1 IDENTIFIER 1.50 1.46 1.42 1.00 REF B 0.
PAGE 18
ADP220/ADP221 Data Sheet ORDERING GUIDE Model 1 ADP220ACBZ-1118R7 ADP220ACBZ-1812R7 ADP220ACBZ-1827R7 ADP220ACBZ-2623R7 ADP220ACBZ-26235R7 ADP220ACBZ-2812R7 ADP220ACBZ-2818R7 ADP220ACBZ-2827R7 ADP220ACBZ-2828R7 ADP220ACBZ275275R7 ADP220ACBZ-3033R7 ADP220ACBZ-1212R7 ADP220ACBZ-2525R7 ADP221ACBZ2828-R7 ADP221ACBZ-1818-R7 ADP221ACDZ-1818-R7 ADP220-2828-EVALZ ADP221-2828-EVALZ Temperature Range −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −4
PAGE 19
Data Sheet ADP220/ADP221 NOTES Rev.