ADM7151 800 mA, Ultra Low Noise/High PSRR Adjustable Vout LDO

The ADM7151 is a low dropout linear regulator that operates from 4.5 V to 16V and provides up to 800mA of output current. Using an advanced proprietary architecture, they provide high power supply rejection, low noise, and achieve excellent line and load transient response with a 10 μF ceramic output capacitor. The output voltage may be set to any voltage between 1.5V and 5.1V with two resistors.

The ADM7151 is available in 2 models that optimize power dissipation and PSRR performance as a function of input and output voltage.The ADM7151 regulator output noise is 1.0 μVrms (100Hz to 100KHz) and 1.7nV/√Hz noise spectral density above 10KHz.

The ADM7151 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 800mA of output current in a small, low-profile footprint.

ADM7151 is an adjustable Vout device. For fixed Vout version of the ADM7151, see the ADM7150.

Applications

Regulation to noise sensitive applications: RF Mixers, PLL’s, VCO’s, and PLL’s with Integrated VCO’s
Clock distribution circuits
Ultrasound and other imaging applications
High speed RF transceivers
High speed, 16 bit+ ADCs
Communications and Infrastructure

Features and Benefits

Input voltage range: 4.5V to 16V
Maximum output current: 800mA
Adjustable output from 1.5V to 5.1V
Low Noise:
1.0 μVRMS Total Integrated Noise from 100 Hz to 100 KHz
1.6 μVRMS Total Integrated Noise from 10 Hz to 100 KHz
Noise Spectral Density <1.7nV√Hz above 10 KHz
PSRR of >90 dB from 1 KHz to 100 KHz, >60dB @ 1 MHz, VOUT = 5V

Dropout voltage: 600 mV @ VOUT = 5 V/800 mA load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2%
Quiescent Current, IGND = 4.3 mA @ No Load
Low shutdown current: 0.1 μA
Stable with a 10 μF ceramic output capacitor
8-lead LFCSP package and SOIC package

Power Management

Linear Regulators

Design Tools

ADI Linear Regulator Design Tool and Parametric Search .

Data Sheets

Document	note
ADM7151: 800 mA Ultralow Noise, High PSRR, RF Linear Regulator Data Sheet (Rev. A)	PDF 785 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADM7151ACPZ-02-R2 Production	8 ld LFCSP (3x3mm, 1.6x2.34mm exposed pad	REEL 250	-40 to 125C	4.16	4.16	Y
ADM7151ACPZ-02-R7 Production	8 ld LFCSP (3x3mm, 1.6x2.34mm exposed pad	REEL 1500	-40 to 125C	0	3.64	Y
ADM7151ACPZ-04-R2 Production	8 ld LFCSP (3x3mm, 1.6x2.34mm exposed pad	REEL 250	-40 to 125C	4.16	4.16	Y
ADM7151ACPZ-04-R7 Production	8 ld LFCSP (3x3mm, 1.6x2.34mm exposed pad	REEL 1500	-40 to 125C	0	3.64	Y
ADM7151ARDZ-02 Production	8 ld SOIC-EP (2.41mm Exposed pad)	OTH 98	-40 to 125C	4.16	3.64	Y
ADM7151ARDZ-02-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	0	3.64	Y
ADM7151ARDZ-04 Production	8 ld SOIC-EP (2.41mm Exposed pad)	OTH 98	-40 to 125C	4.16	3.64	Y
ADM7151ARDZ-04-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	0	3.64	Y