ADP151(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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ADP151 Datasheet PDF : 24 Pages
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FEATURES
Ultralow noise: 9 μV rms
No noise bypass capacitor required
Stable with 1 μF ceramic input and output capacitors
Maximum output current: 200 mA
Input voltage range: 2.2 V to 5.5 V
Low quiescent current
IGND = 10 μA with 0 load
IGND = 265 μA with 200 mA load
Low shutdown current: <1 μA
Low dropout voltage: 140 mV at 200 mA load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2.5%
16 fixed output voltage options: 1.1 V to 3.3 V
PSRR performance of 70 dB at 10 kHz
Current limit and thermal overload protection
Logic controlled enable
Internal pull-down resistor on EN input
5-lead TSOT package
4-ball, 0.4mm pitch WLCSP
APPLICATIONS
RF, VCO, and PLL power supplies
Mobile phones
Digital camera and audio devices
Portable and battery-powered equipment
Post dc-to-dc regulation
Portable medical devices
GENERAL DESCRIPTION
The ADP151 is an ultralow noise, low dropout, linear regulator
that operates from 2.2 V to 5.5 V and provides up to 200 mA of
output current. The low 140 mV dropout voltage at 200 mA
load improves efficiency and allows operation over a wide input
voltage range.
Using an innovative circuit topology, the ADP151 achieves
ultralow noise performance without the necessity of a bypass
capacitor, making it ideal for noise-sensitive analog and RF
applications. The ADP151 also achieves ultralow noise per-
formance without compromising PSRR or transient line and
load performance. The low 265 μA of quiescent current at
200 mA load makes the ADP151 suitable for battery-operated
portable equipment.
The ADP151 also includes an internal pull-down resistor on the
EN input.
Ultralow Noise,200 mA,
CMOS Linear Regulator
ADP151
TYPICAL APPLICATION CIRCUIT
VIN = 2.3V
1µF
1 VIN VOUT 5
2 GND
VOUT = 1.8V
1µF
ON
OFF
3 EN
NC 4
NC = NO CONNECT
Figure 1. TSOT ADP151 with Fixed Output Voltage, 1.8 V
1
2
VIN = 2.3V
CIN
ON
OFF
VIN
VOUT
TOP VIEW
(Not to Scale)
VOUT = 1.8V
A
COUT
1µF
EN
GND B
Figure 2. WLCSP ADP151 with Fixed Output Voltage, 1.8 V
The ADP151 is specifically designed for stable operation with
tiny 1 μF, ±30% ceramic input and output capacitors to meet
the requirements of high performance, space constrained
applications.
The ADP151 is capable of 16 fixed output voltage options,
ranging from 1.1 V to 3.3 V.
Short-circuit and thermal overload protection circuits prevent
damage in adverse conditions. The ADP151 is available in tiny
5-lead TSOT and 4-ball, 0.4 mm pitch, halide-free WLCSP
packages for the smallest footprint solution to meet a variety of
portable power application requirements.
Rev. 0
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