General Description

The MAX25210 high-voltage linear regulator family is ideal

for use in automotive and battery-operated systems. The

device operates from a +3.5V to +36V input voltage, deliv-

ers up to 300mA of load current, and consumes only 10µA

of typical quiescent current at no load. The device con-

sumes only 2µA (typ) current when in shutdown. The input

is +42V transient tolerant and is designed to operate under

load-dump conditions. The MAX25210 can be configured

as either fixed output voltage (+3.3V or +5V) or adjustable

output voltage using an external resistive divider.

The MAX25210 features an open-drain, active-low RE-

SET output with fixed thresholds offered at 93.5% and

87.5% of the output voltage. The RESET output remains

low for a fixed period of 60µs after the output voltage ex-

ceeds its threshold. The RESET delay can be extended

with an external capacitor.

The MAX25210 includes an enable input, short-circuit pro-

tection, and thermal shutdown. The MAX25210 operates

over the -40°C to +125°C automotive temperature range.

The regulators are available in a space-saving, thermally

enhanced, 3mm x 3mm, 8-pin TDFN package.

Applications

● Automotive

● Telecom

● Industrial

Benefits and Features

● Enables System Designers to Meet Stringent Module

Requirements for 100μA Quiescent Current

• Low 10µA Quiescent Current

• 300mA Output-Current Capability (300mA, 200mA,

100mA, and 50mA Variants)

• User-Selectable Output Voltage (+3.3V or +5V

Fixed and +0.6V to +11V Adjustable with External

Resistive Divider)

● Tiny Output Capacitors Reduce Board Space and

BOM Cost

• Stable Operation with 2.2µF Output Capacitor

● Accurate RESET Output with Adjustable Delay

Eliminates Need for Separate Reset IC

• Open-Drain RESET Output with Adjustable Delay

• Fixed-Reset Threshold Options: 87.5% or 93.5%

● Operates Through Cold-Crank Conditions

• Low-Dropout Voltage of 280mV at 200mA

• +3.5V to +36V Wide Input Voltage Range, +42V

Tolerant

● Robust Performance in Automotive Environment

• Thermal and Short-Circuit Protection

• High-Voltage Enable Input (+42V)

• -40°C to +125°C Automotive Temperature Range

• Automotive Qualified AEC-Q100

Ordering Information appears at end of data sheet.

Simplified Block Diagram

IN

SET

GND

TIMEOUT

OUT

SETOV

RESET

MAX25210

ENABLE

1µF

2.2µF

10k

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MAX25210

Automotive Ultra Low Quiescent Current Linear

Regulator Family

19-100810; Rev 3; 2/21