MAX17710

Energy-Harvesting Charger and Protector

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Simplified Operating Circuit

19-5872; Rev 0; 6/11

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

General Description

The MAX17710 is a complete system for charging and

protecting micropower-storage cells such as Infinite Power

can manage poorly regulated sources such as energy-

harvesting devices with output levels ranging from 1FW to

100mW. The device also includes a boost regulator circuit

for charging the cell from a source as low as 0.75V (typ).

An internal regulator protects the cell from overcharging.

Output voltages supplied to the target applications are

regulated using a low-dropout (LDO) linear regulator with

selectable voltages of 3.3V, 2.3V, or 1.8V. The output regu-

lator operates in a selectable low-power or ultra-low-power

mode to minimize drain of the cell. Internal voltage protec-

tion prevents the cell from overdischarging.

The device is available in an ultra-thin, 3mm x 3mm x

0.5mm 12-pin UTDFN package.

Applications

Features

S

Integrated Power-Management IC for Energy

Storage and Load Management

S

Lithium Charger

625nA Linear Charging

1µW Boost Charging

S

Lithium Cell Undervoltage Protection

S

Charger Overvoltage Shunt Protection

S

S

Lithium Cell Output Buffering

S

Ultra-Thin, 3mm x 3mm x 0.5mm UTDFN Package

Powered/Smart Cards

Remote Wireless

Sensors

Memory and Real-Time

Clock Backup

Semiactive RFID Tags

Medical Devices

High-Temperature

Applications

Military/DoD and

Aerospace

Toys

THINERGY is a registered trademark of Infinite Power Solutions, Inc.

E V A L U A T I O N K I T A V A I L A B L E

LX

FB

GND

EP

PGND

SEL1

CHG

SEL2

BATT

TEG, SOLAR,

OR OTHER

LOW-VOLTAGE

SOURCE

RF OR OTHER

HIGH-VOLTAGE

SOURCE

THINERGY

MEC101

PCKP

REG

AE

LCE

LDO

CONTROL

SIGNALS

UNREGULATED

OUTPUT

REGULATED

OUTPUT

MAX17710

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.