Datasheet Analog Devices ADM7172 — 数据表

FEATURES TYPICAL APPLICATION CIRCUIT
VIN
VIN CIN
4.7µF VOUT
VOUT
SENSE VOUT = 3.3V
COUT
4.7µF ON EN SS OFF GND CSS
1nF Figure 1. ADM7172 with Fixed Output Voltage, 3.3 V Inrush current can be controlled by adjusting the start-up time
via the soft start pin. The typical start-up time with a 1 nF soft
start capacitor is 1.0 ms.
The ADM7172 regulator output noise is 5 μV rms, independent
of the output voltage. The ADM7172 is available in an 8-lead,
3 mm × 3 mm LFCSP, making it not only a very compact solution,
but also providing excellent thermal performance for applications
requiring up to 2 A of output current in a small, low profile
footprint. APPLICATIONS T Regulation to noise sensitive applications: ADC and DAC
circuits, precision amplifiers, PLLs/VCOs, and clocking ICs
Communications and infrastructure
Medical and healthcare
Industrial and instrumentation GENERAL DESCRIPTION 1 2 The ADM7172 is a CMOS, low dropout linear regulator (LDO)
that operates from 2.3 V to 6.5 V and provides up to 2 A of output
current. This high output current LDO is ideal for regulation of …

Known Good Die 6.5 V, 2 A, Ultralow Noise, High PSRR,
Fast Transient Response CMOS LDO
ADM7172-KGD FEATURES GENERAL DESCRIPTION Input voltage range: 2.3 V to 6.5 V
Maximum load current: 2 A
Low noise: 5 µV rms independent of output voltage at
100 Hz to 100 kHz
Fast transient response: 1.5 μs for 1 mA to 1.5 A load step
60 dB PSRR at 100 kHz
Low dropout voltage: 172 mV at 2 A load, VOUT = 3 V
Initial accuracy: −0.5% (minimum), +1% (maximum)
Accuracy over line, load, and temperature: ±1.5%
Quiescent current, IGND = 0.7 mA with no load
Low shutdown current: 0.25 μA at VIN = 5 V
Stable with small 4.7 µF ceramic output capacitor
Adjustable and fixed output voltage options: 1.2 V to 5.0 V
Adjustable output from 1.2 V to VIN − VDO
Precision enable
Adjustable soft start The ADM7172-KGD is a CMOS, low dropout linear regulator
(LDO) that operates from 2.3 V to 6.5 V and provides up to 2 A
of output current. This high output current LDO is ideal for
regulation of high performance analog and mixed-signal circuits
operating from 6 V down to 1.2 V rails. Using an advanced
proprietary architecture, the device provides high power supply …