Datasheet

150 mA, Low Dropout,
CMOS Linear Regulator
ADP1710/ADP1711
Rev. 0
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FEATURES
Maximum output current: 150 mA
Input voltage range: 2.5 V to 5.5 V
Light load efficient
I
GND
= 35 μA with zero load
I
GND
= 40 μA with 100 μA load
Low shutdown current: <1 μA
Low dropout voltage: 150 mV @ 150 mA load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2%
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
Low noise: 40 μV
RMS
Excellent load/line transient response
Current limit and thermal overload protection
Logic controlled enable
5-lead TSOT package
APPLICATIONS
Mobile phones
Digital camera and audio devices
Portable and battery-powered equipment
Post dc-dc regulation
TYPICAL APPLICATION CIRCUITS
IN
GND
EN
OUT
NC
1
2
3
5
4
ADP1710
NC = NO CONNECT
1µF
1µF
V
IN
= 5V V
OUT
= 3.3V
06310-001
Figure 1. ADP1710 with Fixed Output Voltage, 3.3 V
IN
GND
EN
OUT
ADJ
1
2
3
5
4
A
DP1710
ADJUSTABLE
1µF
1µF
V
IN
= 5.5V
R1
R2
V
OUT
= 0.8V(1 + R1/R2)
06310-002
Figure 2. ADP1710 with Adjustable Output Voltage, 0.8 V to 5.0 V
IN
GND
EN
OUT
BYP
1
2
3
5
4
ADP1711
1µF
1µF
10nF
V
IN
= 5V V
OUT
= 3.3V
0
6310-003
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 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.
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.
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
5lead TSOT packages, for the smallest footprint solution to all
your power needs.