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ADP121-AUJZ25R7 View Datasheet(PDF) - Analog Devices

Part NameADP121-AUJZ25R7 ADI
Analog Devices ADI
Description150 mA, Low Quiescent Current, CMOS Linear Regulator
ADP121-AUJZ25R7 Datasheet PDF : 20 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADP121
1mA TO 150mA LOAD STEP,
2.5A/µs
ILOAD
VOUT
VIN = 5V
VOUT = 1.8V
(40µs/DIV)
Figure 23. Load Transient Response, CIN = COUT = 1 μF
1mA TO 150mA LOAD STEP,
2.5A/µs
ILOAD
VOUT
VIN = 5V
VOUT = 1.8V
(40µs/DIV)
Figure 24. Load Transient Response, CIN = COUT = 4.7 μF
Data Sheet
VIN
4V TO 5V INPUT VOLTAGE STEP,
2V/µs
VOUT
VOUT = 1.8V,
CIN = COUT = 1µF
(4µs/DIV)
Figure 25. Line Transient Response, Load Current = 150 mA
VOUT = 1.8V,
CIN = COUT = 1µF
VIN
4V TO 5V INPUT VOLTAGE STEP,
2V/µs
VOUT
(10µs/DIV)
Figure 26. Line Transient Response, Load Current = 1 mA
Rev. G | Page 10 of 20
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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 μA 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.

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
     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 = 1.2 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

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