General Description

The MAX4832/MAX4833 family of low-dropout (LDO)

linear regulators feature an accurate current-limiting

switch with an integrated FLAG or RESET function. These

devices operate from 2.5V to 5.5V and deliver up to

100mA of load current at a preset output voltage. Preset

output voltage levels are 1.8V/2.5V/2.8V/3.0V/3.3V.

The MAX4832/MAX4833 offer a programmable soft-

start control function to eliminate false reset during

startup. The MAX4832 provides a FLAG function to noti-

fy the system when the load current exceeds the limit.

The MAX4833 provides a RESET function to notify the

system when the output drops below the threshold.

Additionally, reverse-current protection prevents cur-

rent flowing from the output to the input. Other features

include a low 90µA quiescent current, a 0.1µA shut-

down current.

The MAX4832/MAX4833 are available in space-saving

6-pin SOT23 and TDFN packages. Each device is speci-

fied over the -40°C to +85°C extended temperature

range. Contact factory for other programmed output volt-

age versions from 1.5V to 3.3V in 100mV increments.

For pin-compatible 250mA versions of this device, refer

to the MAX4834/MAX4835. For pin-compatible 500mA

versions of this device, refer to the MAX4836/MAX4837.

Applications

SDIO Ports and Devices

Notebook Computers

USB Ports and Devices

Cell Phones

PDAs and Palmtop Devices

GPS Systems

Features

♦ Guaranteed Minimum 100mA Load Current

♦ Accurate Current Limit

♦ Preset Output Voltages: 1.8V/2.5V/2.8V/3.0V/3.3V

♦ 2.5V to 5.5V Supply Voltage Range

♦ Adjustable Soft-Start

♦ Low Dropout Voltage

♦ Thermal Shutdown

♦ Reverse-Current Protection

♦ Shutdown Output Discharge (MAX4833)

♦ Low 90µA Supply Current

♦ Ultra-Low 0.1µA Shutdown Current

♦ FLAG and Latch Off (MAX4832) or RESET

(MAX4833)

♦ Tiny SOT23 and TDFN Packages

100mA LDO Linear Regulators with

Current-Limiting Switch

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3372; Rev 0; 7/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Note: “xy” are placeholders for the output voltage levels of the

devices. Insert the values found in Table 1 at the end of this doc-

ument in the place of “xy”. The “_” is a placeholder for either the

RESET or the FLAG feature. Insert “B” in the place of “_” for

RESET and “C” for FLAG. “dd” is a placeholder for the reset

timeout period. Insert the values found in Table 2 in the place of

“dd.” For example, MAX4833EUT18BD2 has a 1.8V output volt-

age, RESET feature, and a 30ms reset timeout period. Note that

“dd” applies only to the devices with RESET option and does not

apply to the devices with FLAG option. For devices with the

FLAG option, leave dd blank. Standard versions require a mini-

mum order increment of 2.5k units. Nonstandard versions must

be ordered in 10k unit increments. Contact factory for availability.

*Future product—contact factory for availability.

PART

TEMP RANGE

PIN-PACKAGE

MAX4832EUTxy_-T*

-40°C to +85°C

6 SOT23-6

MAX4832ETTxy_-T

-40°C to +85°C

6 TDFN-6

MAX4833EUTxy_dd-T*

-40°C to +85°C

6 SOT23-6

MAX4833ETTxy_dd-T

-40°C to +85°C

6 TDFN-6

6

OUT

5

SS

4

RESET

(FLAG)

1

2

GND

3

SHDN

MAX4832/MAX4833

IN

TDFN

EXPOSED PADDLE

TOP VIEW

( ) MAX4832ETTxyC ONLY.

Pin Configurations

Pin Configurations continued at end of data sheet.

Tables 1 and 2 and Selector Guide appear at end of data

sheet.