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ADP1761 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ADP1761
部品説明 CMOS Linear Regulator
メーカ Analog Devices
ロゴ Analog Devices ロゴ 



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ADP1761 Datasheet, ADP1761 PDF,ピン配置, 機能
Data Sheet
FEATURES
1 A maximum output current
Low input voltage supply range
VIN = 1.10 V to 1.98 V, no external bias supply required
Fixed output voltage range: VOUT_FIXED = 0.9 V to 1.5 V
Adjustable output voltage range: VOUT_ADJ = 0.5 V to 1.5 V
Ultralow noise: 2 μV rms, 100 Hz to 100 kHz
Noise spectral density
4 nV/√Hz at 10 kHz
3 nV/√Hz at 100 kHz
Low dropout voltage: 30 mV typical at 1 A load
Operating supply current: 4.5 mA typical at no load
±1.5% fixed output voltage accuracy over line, load, and
temperature
Excellent power supply rejection ratio (PSRR) performance
67 dB typical at 10 kHz at 1 A load
51 dB typical at 100 kHz at 1 A load
Excellent load/line transient response
Soft start to reduce inrush current
Optimized for small 10 μF ceramic capacitors
Current-limit and thermal overload protection
Power-good indicator
Precision enable
16-lead, 3 mm × 3 mm LFCSP package
APPLICATIONS
Regulation to noise sensitive applications such as radio
frequency (RF) transceivers, analog-to-digital converter
(ADC) and digital-to-analog converter (DAC) circuits,
phase-locked loops (PLLs), voltage controlled oscillators
(VCOs) and clocking integrated circuits
Field-programmable gate array (FPGA) and digital signal
processor (DSP) supplies
Medical and healthcare
Industrial and instrumentation
GENERAL DESCRIPTION
The ADP1761 is a low noise, low dropout (LDO) linear regulator. It
is designed to operate from a single input supply with an input
voltage as low as 1.10 V, without the requirement of an external
bias supply to increase efficiency and provide up to 1 A of
output current.
The low 30 mV typical dropout voltage at a 1 A load allows the
ADP1761 to operate with a small headroom while maintaining
regulation and providing better efficiency.
Rev. 0
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
1 A, Low VIN, Low Noise,
CMOS Linear Regulator
ADP1761
TYPICAL APPLICATION CIRCUITS
VIN = 1.7V
CIN
10µF
RPULL-UP
100k
PG
ADP1761
VIN VOUT
SENSE
EN
PG
SS VADJ
VOUT = 1.5V
COUT
10µF
ON
OFF
CSS
10nF
CREG
1µF
VREG
REFCAP
GND
CREF
1µF
Figure 1. Fixed Output Operation
VIN = 1.7V
CIN
10µF
RPULL-UP
100k
PG
ADP1761
VIN VOUT
SENSE
EN
PG
SS VADJ
CSS
10nF
CREG
1µF
VREG
REFCAP
GND
VOUT = 1.5V
COUT
10µF
ON
OFF
CREF
1µF
RADJ
10k
Figure 2. Adjustable Output Operation
Table 1. Related Devices
Device
Input Maximum
Voltage Current
ADP1762 1.10 V to 2 A
1.98 V
ADP1763 1.10 V to 3 A
1.98 V
ADP1740/ 1.6 V to 2 A
ADP1741 3.6 V
ADP1752/ 1.6 V to 0.8 A
ADP1753 3.6 V
ADP1754/ 1.6 V to 1.2 A
ADP1755 3.6 V
Fixed/
Adjustable
Fixed/adjustable
Fixed/adjustable
Fixed/adjustable
Fixed/adjustable
Fixed/adjustable
Package
16-lead
LFCSP
16-lead
LFCSP
16-lead
LFCSP
16-lead
LFCSP
16-lead
LFCSP
The ADP1761 is optimized for stable operation with small 10 μF
ceramic output capacitors. The ADP1761 delivers optimal transient
performance with minimal board area.
The ADP1761 is available in fixed output voltages ranging from
0.9 V to 1.5 V. The output of the adjustable output model can be
set from 0.5 V to 1.5 V through an external resistor connected
between VADJ and ground.
The ADP1761 has an externally programmable soft start time by
connecting a capacitor to the SS pin. Short-circuit and thermal
overload protection circuits prevent damage in adverse conditions.
The ADP1761 is available in a small 16-lead LFCSP package for the
smallest footprint solution to meet a variety of applications.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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