1

Ultra Low Dropout 1A, 2A, 3A Low Input Voltage NMOS

LDOs

ISL80111, ISL80112, ISL80113

The ISL80111, ISL80112, and ISL80113 are ultra low dropout

LDOs providing the optimum balance between performance, size

and power consumption in size constrained designs for data

communication, computing, storage and medical applications.

These LDOs are specified for 1A, 2A and 3A of output current and

at 100kHz makes these LDOs an ideal choice in noise sensitive

conditions lends these parts to suppling an accurate voltage to

the latest low voltage digital ICs.

An enable input allows the part to be placed into a low quiescent

current shutdown mode. A submicron CMOS process is utilized for

this product family to deliver best-in-class analog performance

and overall value for applications in need of input voltage

conversions typically below 2.5V. It also has the superior load

transient regulation unique to a NMOS power stage. These LDOs

consume significantly lower quiescent current as a function of

load compared to bipolar LDOs.

Features

• Ultra low dropout: 75mV at 3A, (typ)

• Very fast load transient response

• Extensive protection and reporting features

• Small 10 Ld 3x3 DFN package

Applications

• Noise-sensitive instrumentation and medical systems

• Data acquisition and data communication systems

• Storage, telecommunications and server equipment

• Low voltage DSP, FPGA and ASIC core power supplies

• Post-regulation of switched mode power supplies

FIGURE 1. TYPICAL APPLICATION SCHEMATIC

FIGURE 4.

VIN

9

VIN

10

ENABLE

7

VBIAS

4

GND

1.2V ±5%

10µF

VIN

5

PG

6

VOUT

1

VOUT 2

VOUT

1.0V

10µF

ADJ 3

PGOOD

1.0kΩ

1.0kΩ

EN

OPEN DRAIN COMPATIBLE

3.3V ±10%

VBIAS

1µF

ISL80111, ISL80112, ISL80113

TEMPERATURE (°C)

0

10

20

30

40

50

60

70

80

90

100

-40

25

85

125

3A

2A

1A

0

20

40

60

80

100

100

1k

10k

100k

1M

FREQUENCY (Hz)

BIAS = 5V

0.985

0.990

0.995

1.000

1.005

1.010

1.015

-40

0

25

85

125

TEMPERATURE (°C)

November 1, 2013

FN7841.2

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

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.