Datasheet ADM7172-KGD (Analog Devices)

6.5 V, 2 A, Ultralow Noise, High PSRR, Fast Transient Response CMOS LDO Known Good Die ADM7172-KGD FEATURES GENERAL DESCRIPTION Input voltage range: 2.3 V to 6.5 V
The ADM7172-KGD is a CMOS, low dropout linear regulator
Maximum load current: 2 A
(LDO) that operates from 2.3 V to 6.5 V and provides up to 2 A
Low noise: 5 µV rms independent of output voltage at
of output current. This high output current LDO is ideal for
100 Hz to 100 kHz
regulation of high performance analog and mixed-signal circuits
Fast transient response: 1.5 μs for 1 mA to 1.5 A load step
operating from 6 V down to 1.2 V rails. Using an advanced
60 dB PSRR at 100 kHz
proprietary architecture, the device provides high power supply
Low dropout voltage: 172 mV at 2 A load, VOUT = 3 V
rejection and low noise and achieves excellent line and load
Initial accuracy: −0.5% (minimum), +1% (maximum)
transient response with just a smal 4.7 µF ceramic output
Accuracy over line, load, and temperature: ±1.5%
capacitor. Load transient response is typical y 1.5 μs for a 1 mA
Quiescent current, IGND = 0.7 mA with no load
to 1.5 A load step.
Low shutdown current: 0.25 μA at VIN = 5 V
The ADM7172-KGD is available in a 4.2 V fixed output voltage
Stable with small 4.7 µF ceramic output capacitor
option. Additional voltages that are available by special order are
Adjustable and fixed output voltage options: 1.2 V to 5.0 V
1.3 V, 1.5 V, 1.8 V, 1.85 V, 2.0 V, 2.2 V, 2.5 V, 2.7 V, 2.75 V, 2.8 V,
Adjustable output from 1.2 V to VIN − VDO
2.85 V, 3.0 V, 3.8 V, 3.3 V, 4.2 V, 4.6 V, 5.0 V, and an adjustable
Precision enable
output option.
Adjustable soft start
Inrush current can be controlled by adjusting the start-up time
APPLICATIONS
via the soft start pin. The typical start-up time with a 1 nF soft
Regulation to noise sensitive applications: analog-to-digital
start capacitor is 1.0 ms.
converter (ADC) and digital-to-analog converter (DAC)
The ADM7172-KGD regulator output noise is 5 μV rms,
circuits, precision amplifiers, phase-locked loops (PLLs)/
independent of the output voltage.
voltage controlled oscillators (VCOs), and clocking ICs Communications and infrastructure
Additional application and technical information can be found
Medical and healthcare
in the ADM7172 data sheet.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS DIE SPECIFICATIONS AND ASSEMBLY RECOMMENDATIONS ORDERING GUIDE