Document
Data Sheet
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 VOUT = 1.2 V 50 µV rms typical output noise at VOUT = 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
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
Dual, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP220/ADP221
TYPICAL APPLICATION CIRCUITS
12
ON OFF
A
EN1
VOUT1
VOUT1 = 2.8V 1µF
B
ON OFF
C
GND
VIN
TOP VIEW (Not to Scale)
EN2 VOUT2
VIN = 3.3V 1µF
VOUT2 = 2.8V 1µF
Figure 1. Typical Application Circuit
07572-001
VIN
THERMAL SHUTDOWN
CURRENT LIMIT
VOUT1 60Ω
EN1 CONTROL LOGIC AND
EN2 ENABLE
REFERENCE
ADP221 ONLY
ADP220
GND
CURRENT LIMIT
60Ω VOUT2
Figure 2. Block Diagram of the ADP220/ADP221
07572-002
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 overcurrent and thermal protection to prevent damage in adverse conditions.
Rev. H
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is gra.