1

®

FN6299.4

ISL9003A

PSRR

ISL9003A is a high performance single low noise, high

PSRR LDO that delivers a continuous 150mA of load

current. It has a low standby current and is stable with 1µF of

MLCC output capacitance with an ESR of up to 200m

Ω.

The ISL9003A has a very high PSRR of 90dB and output

quiescent current of 31µA (typical), and 0.5µA shutdown

current, the ISL9003A is an ideal choice for portable wireless

equipment.

The ISL9003A comes in many fixed voltage options with

±1.8% output voltage accuracy over temperature, line and

load. Other output voltage options are available on request.

Pinouts

ISL9003A

(5 LD SC-70)

TOP VIEW

ISL9003A

(6 LD 1.6x1.6 µTDFN)

TOP VIEW

Features

• High Performance LDO with 150mA Continuous Output

• Excellent Transient Response to Large Current Steps

• Excellent Load Regulation:

<0.1% voltage change across full range of load current

• Very High PSRR: >90dB @ 1kHz

• Wide Input Voltage Capability: 2.3V to 6.5V

• Extremely Low Quiescent Current: 31µA

• Low Dropout Voltage: Typically 200mV @ 150mA

• Stable with 1µF to 4.7µF Ceramic Capacitors

• Shutdown Pin Turns Off LDO with 1µA (max) Standby

Current

• Soft-start Limits Input Current Surge During Enable

• Current Limit and Overheat Protection

• ±1.8% Accuracy Over all Operating Conditions

• 5 Ld SC-70 Package or 6 Ld µTDFN Package

• -40°C to +85°C Operating Temperature Range

• Pb-Free (RoHS compliant)

Applications

• PDAs, Cell Phones and Smart Phones

• Portable Instruments, MP3 Players

• Handheld Devices Including Medical Handhelds

VIN

GND

EN

VO

CBYP

1

2

3

5

4

NC

5

VO

GND

CBYP

VIN

EN

1

2

3

6

4

5

Data Sheet

October 1, 2009

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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