150 mA, Low Dropout,
CMOS Linear Regulator
ADP1710/ADP1711
FEATURES
TYPICAL APPLICATION CIRCUITS
Maximum output current: 150 mA
Input voltage range: 2.5 V to 5.5 V
Light load efficient
ADP1710
V
= 5V
V
= 3.3V
1µF
IN
1µF
OUT
1
2
3
5
IN
OUT
I
I
GND = 35 μA with zero load
GND = 40 μA with 100 μA load
GND
EN
4
NC
Low shutdown current: <1 μA
Low dropout voltage: 150 mV @ 150 mA load
Initial accuracy: 1ꢀ
NC = NO CONNECT
Figure 1. ADP1710 with Fixed Output Voltage, 3.3 V
Accuracy over line, load, and temperature: 2ꢀ
Stable with small 1μF ceramic output capacitor
16 fixed output voltage options: 0.75 V to 3.3 V (ADP1710)
Adjustable output voltage option: 0.8 V to 5.0 V
(ADP1710 Adjustable)
16 fixed output voltage options with reference bypass:
0.75 V to 3.3 V (ADP1711)
High PSRR: 69 dB @ 1 kHz
ADP1710
ADJUSTABLE
V
= 5.5V
V
= 0.8V(1 + R1/R2)
1µF
IN
OUT
1
2
3
5
4
IN
OUT
ADJ
1µF
GND
EN
R1
R2
Low noise: 40 μVRMS
Excellent load/line transient response
Current limit and thermal overload protection
Logic controlled enable
Figure 2. ADP1710 with Adjustable Output Voltage, 0.8 V to 5.0 V
ADP1711
5-lead TSOT package
V
= 5V
V
= 3.3V
1µF
IN
OUT
1
2
3
5
IN
OUT
APPLICATIONS
1µF
Mobile phones
GND
EN
Digital camera and audio devices
Portable and battery-powered equipment
Post dc-dc regulation
10nF
4
BYP
Figure 3. ADP1711 with Fixed Output Voltage and Bypass Capacitor, 3.3 V
GENERAL DESCRIPTION
The ADP1710/ADP1711 are low dropout linear regulators
that operate from 2.5 V to 5.5 V and provide up to 150 mA of
output current. Utilizing a novel scaling architecture, ground
current drawn is a very low 40 μA, when driving a 100 μA
load, making the ADP1710/ADP1711 ideal for battery-
operated portable equipment.
The ADP1710/ADP1711 are optimized for stable operation with
small 1 μF ceramic output capacitors, allowing for good transient
performance while occupying minimal board space. An enable
pin controls the output voltage on both devices. There is also an
under-voltage lockout circuit on both devices, which disables the
regulator if IN drops below a minimum threshold.
The ADP1710 and the ADP1711 are each available in sixteen
fixed output voltage options. The ADP1710 is also available in
an adjustable version, which allows output voltages that range
from 0.8 V to 5 V via an external divider. The ADP1711 allows
for a reference bypass capacitor to be connected, which reduces
output voltage noise and improves power supply rejection.
An internal soft start gives a typical start-up time of 80 μs.
Short-circuit protection and thermal overload protection
circuits prevent damage to the devices in adverse conditions.
Both the ADP1710 and the ADP1711 are available in tiny
5lead TSOT packages, for the smallest footprint solution to all
your power needs.
Rev. 0
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.