MAX4834, MAX4835 250mA LDO Linear Regulators with Current-Limiting Switch

Description

The MAX4834/MAX4835 family of low-dropout linear regulators (LDOs) feature an accurate current-limiting switch with an integrated FLAG-bar or RESET-bar function. These devices operate from 2.5V to 5.5V and deliver up to 250mA of load current at a preset output voltage. Preset output voltage levels are 1.8V/2.5V/2.8V/3.0V/3.3V.

The MAX4834/MAX4835 offer a programmable softstart control function to eliminate false reset during startup. The MAX4834 provides a FLAG-bar function to notify the system when the load current exceeds the limit. The MAX4835 provides a RESET-bar function to notify the system when the output drops below the threshold. Additionally, reverse-current protection prevents current flowing from the output to the input. Other features include a low 90µA quiescent current, a 0.1µA shutdown current.

The MAX4834/MAX4835 are available in space-saving 6-pin SOT23 and TDFN packages. Each device is specified over the -40°C to +85°C extended temperature range. Contact factory for other programmed output voltage versions from 1.5V to 3.3V in 100mV increments.

For pin-compatible 100mA versions of this device, refer to the MAX4832/MAX4833. For pin-compatible 500mA versions of this device, refer to the MAX4836/MAX4837.

Key Features

Applications/Uses

	Guaranteed Minimum 250mA 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 (MAX4835)
	Low 90µA Supply Current
	Ultra-Low 0.1µA Shutdown Current
	FLAG-bar and Latch Off (MAX4834) or RESET-bar (MAX4835)
	Tiny SOT23 and TDFN (3mm x 3mm) Packages

	Cell Phones
	Global Positioning Systems (GPS)
	Notebook Computers
	PDAs and Palmtop Devices
	SDIO Ports and Devices
	USB Ports and Devices

Key Specifications: Current Limit Switches

Part Number

Current Limit (mA)

Functions

Max. Load Current (A)

R_ON (typ) (Ω)

Switch Op. Voltage Range (V)

Fault Indicator

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

MAX4834

250

•	FLAG function

•	Fault Blanking

0.25

0.4

2.5 to 5.5

Yes

THIN QFN (Dual)/6

-40 to +85

MAX4835

•

Reset

See Data Sheet

See All Current Limit Switches (27)

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-30 of 30

MAX4834

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4834ETT33C