ADP7185 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADP7185
Manufacturer

ADI
ChipWorker Part#

CW983394136
Description

-500mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator
Documentation

Datasheet

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ADP7185 Specifications

Attribute	Attribute Value

Part Number	ADP7185
Manufacturer	ADI
ChipWorker Part#	CW983394136
Documentation	Datasheet
	expand all
Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The ADP7185 is a complementary metal oxide semiconductor (CMOS), low dropout (LDO) linear regulator that operates from −2.0 V to −5.5 V and provides up to −500 mA of output current. This high output current LDO is ideal for regulation of high performance analog and mixed signal circuits operating from −0.5 V down to −4.5 V. Using an advanced proprietary architecture, the ADP7185 provides high power supple rejection ratio (PSRR) and low noise, and it achieves excellent line and load transient response with a small 4.7 μF ceramic output capacitor.
The ADP7185 is available in 15 fixed output voltage options. The following voltages are available from stock: −0.5 V, −1.0 V, −1.2 V, −1.5 V, −1.8 V, −2.0 V, −2.5 V, −3.0 V, and −3.3 V.
Additional voltages available by special order are −0.8 V, −0.9 V, −1.3 V, −2.8 V, −4.2 V, and −4.5 V. An adjustable version is also available which allows output voltages that range from −0.5 V to −VIN \+ 0.5 V with an external feedback divider.
The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility.
The ADP7185 regulator output noise is 4 μV rms independent of the output voltage. The ADP7185 is available in an 8-lead, 2 mm × 2 mm LFCSP, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to −500 mA of output current in a small, low profile footprint.
**Applications**
Regulation to noise sensitive applications: analog-to-digital converters (ADCs), digital-to-analog converters (DACs), precision amplifiers
Communications and infrastructure
Medical and healthcare
Industrial and instrumentation
### Features and Benefits
Input voltage range: −2.0 V to −5.5 V
Maximum output current: −500 mA
Fixed output voltage options: −0.5 V to −4.5 V
Adjustable output from −0.5 V to −VIN \+ 0.5 V
Low output noise: 4 μV rms from 100 Hz to 100 kHz
Noise spectral density: 20 nV/√Hz, 10 kHz to 1 MHz
PSRR at −500 mA load
68 dB at 10 kHz
50 dB at 100 kHz
40 dB at 1 MHz
Low dropout voltage: −190 mV typical at −500 mA load
Initial output voltage (VOUT) accuracy: ±0.5%
Output voltage accuracy over line, load, and temperature: ±2.2%
Operating supply current (IGND): −0.6 mA typical at no load
Low shutdown current: −2 μA typical at VIN = −5.5 V
Stable with small 4.7 μF ceramic input and output capacitor
Positive or negative enable logic
Current-limit and thermal overload protection
8-lead, 2 mm × 2 mm LFCSP package
Supported by ADIsimPOWER voltage regulator design tool

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