0.8 A, Low VIN, Low Dropout
Linear Regulator
Data Sheet
ADP1752/ADP1753
FEATURES
TYPICAL APPLICATION CIRCUITS
V
IN
= 1.8V
V
= 1.5V
OUT
Maximum output current: 0.8 A
Input voltage range: 1.6 V to 3.6 V
Low shutdown current: <2 µA
Very low dropout voltage: 70 mV @ 0.8 A load
Initial accuracy: 1%
Accuracy over line, load, and temperature: 2%
7 fixed output voltage options with soft start
0.75 V to 2.5 V (ADP1752)
4.7µF
4.7µF
14
VIN VIN VOUT VOUT
13
16
15
1 VIN
2 VIN
3 VIN
4 EN
VOUT 12
ADP1752
TOP VIEW
(Not to Scale)
VOUT 11
VOUT 10
SENSE 9
100kΩ
PG
Adjustable output voltage option with soft start
0.75 V to 3.3 V (ADP1753)
High PSRR
PG GND SS NC
7
8
5
6
65 dB @ 1 kHz
10nF
65 dB @ 10 kHz
54 dB @ 100 kHz
Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V
23 μV rms at 0.75 V output
V
= 1.8V
V
= 0.5V(1 + R1/R2)
IN
OUT
Stable with small 4.7 µF ceramic output capacitor
Excellent load and line transient response
Current-limit and thermal overload protection
Power-good indicator
Logic-controlled enable
Reverse current protection
4.7µF
4.7µF
14
VIN VIN VOUT VOUT
13
16
15
1 VIN
2 VIN
3 VIN
4 EN
VOUT 12
ADP1753
TOP VIEW
(Not to Scale)
VOUT 11
VOUT 10
100kΩ
R1
APPLICATIONS
PG
ADJ
PG GND SS NC
9
Server computers
Memory components
R2
7
8
5
6
Telecommunications equipment
Network equipment
10nF
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems
Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.3 V
GENERAL DESCRIPTION
voltages that range from 0.75 V to 3.3 V via an external divider.
The ADP1752/ADP1753 allow an external soft start capacitor
to be connected to program the startup. A digital power-good
output allows power system monitors to check the health of the
output voltage.
The ADP1752/ADP1753 are low dropout (LDO) CMOS linear
regulators that operate from 1.6 V to 3.6 V and provide up to
800 mA of output current. These low VIN/VOUT LDOs are ideal
for regulation of nanometer FPGA geometries operating from
2.5 V down to 1.8 V I/O rails, and for powering core voltages
down to 0.75 V. Using an advanced proprietary architecture,
they provide high power supply rejection ratio (PSRR) and low
noise, and achieve excellent line and load transient response
with only a small 4.7 µF ceramic output capacitor.
The ADP1752/ADP1753 are available in a 16-lead, 4 mm × 4 mm
LFCSP, making them not only very compact solutions, but also
providing excellent thermal performance for applications that
require up to 800 mA of output current in a small, low profile
footprint.
The ADP1752 is available in seven fixed output voltage options.
The ADP1753 is the adjustable version, which allows output
Rev. E
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