ADP1752-1.5-EVALZ 查看數據表（PDF） - Analog Devices
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ADP1752-1.5-EVALZ Datasheet PDF : 20 Pages
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Data Sheet
FEATURES
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)
Adjustable output voltage option with soft start
0.75 V to 3.3 V (ADP1753)
High PSRR
65 dB @ 1 kHz
65 dB @ 10 kHz
54 dB @ 100 kHz
23 μV rms at 0.75 V output
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
APPLICATIONS
Server computers
Memory components
Telecommunications equipment
Network equipment
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems
GENERAL DESCRIPTION
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 is available in seven fixed output voltage options.
The ADP1753 is the adjustable version, which allows output
0.8 A, Low VIN, Low Dropout
Linear Regulator
ADP1752/ADP1753
TYPICAL APPLICATION CIRCUITS
VIN = 1.8V
VOUT = 1.5V
4.7µF
100kΩ
PG
16 15 14 13
VIN VIN VOUT VOUT
1 VIN
VOUT 12
2 VIN
3 VIN
ADP1752 VOUT 11
TOP VIEW
(Not to Scale) VOUT 10
4 EN
SENSE 9
PG GND SS NC
5678
4.7µF
10nF
VIN = 1.8V
Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V
VOUT = 0.5V(1 + R1/R2)
4.7µF
100kΩ
PG
16 15 14 13
VIN VIN VOUT VOUT
1 VIN
VOUT 12
2 VIN
3 VIN
ADP1753 VOUT 11
TOP VIEW
(Not to Scale) VOUT 10
4 EN
PG GND SS
567
ADJ 9
NC
8
4.7µF
R1
R2
10nF
Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.3 V
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 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.
Rev. E
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