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| 型号： | ADP220-2828-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 2.8V/2.8V |
| 标准包装： | 1 |
| 每 IC 通道数： | 2 - 双 |
| 输出电压： | 2 x 2.8V |
| 电流 - 输出： | 200mA |
| 输入电压： | 2.5 ~ 5.5V |
| 稳压器类型： | 正，固定式 |
| 工作温度： | -40°C ~ 125°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP220 |
Dual, 200 mA, Low Noise,
High PSRR Voltage Regulator
Data Sheet
FEATURES
ADP220/ADP221
TYPICAL APPLICATION CIRCUITS
Input voltage range: 2.5 V to 5.5 V
1
2
Dual independent 200 mA low dropout voltage regulators
Miniature 6-ball, 1.0 mm × 1.5 mm WLCSP and 6-ball
OFF
ON
A
EN1
VOUT1
V OUT1 = 2.8V
bumped bare die
Initial accuracy: ±1%
1μF
Stable with 1 μF ceramic output capacitors
No noise bypass capacitor required
B
GND
VIN
V IN = 3.3V
1μF
Two independent logic controlled enables
Overcurrent and thermal protection
Active output pull-down (ADP221)
OFF
ON
C
TOP VIEW
(Not to Scale)
EN2 VOUT2
V OUT2 = 2.8V
Key specifications
High PSRR
76 dB PSRR up to 1 kHz
70 dB PSRR at 10 kHz
60 dB PSRR at 100 kHz
Figure 1. Typical Application Circuit
1μF
40 dB PSRR at 1 MHz
VIN
VOUT1
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
THERMAL
SHUTDOWN
CURRENT
LIMIT
60Ω
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
EN1
EN2
CONTROL
LOGIC
AND
ENABLE
REFERENCE
ADP221
ONLY
Guaranteed 200 mA output current per regulator
?40°C to +125°C junction temperature
APPLICATIONS
Mobile phones
Digital cameras and audio devices
GND
ADP220
CURRENT
LIMIT
60Ω
VOUT2
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
Figure 2. Block Diagram of the ADP220/ADP221
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.
Rev. H
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 ?2008–2013 Analog Devices, Inc. All rights reserved.
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