MAX17710_1107 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Energy-Harvesting Charger and Protector

19-5872; Rev 1; 7/11
EVALUATION KIT AVAILABLE
MAX17710
Energy-Harvesting Charger and Protector
General Description
The MAX17710 is a complete system for charging and
protecting micropower-storage cells such as Infinite Power
Solution’s THINERGY^® microenergy cells (MECs). The IC
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
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
Features
S Integrated Power-Management IC for Energy
Storage and Load Management
S Lithium Charger
1nA Standby I_QBATT
625nA Linear Charging
1µW Boost Charging
S Lithium Cell Undervoltage Protection
S Charger Overvoltage Shunt Protection
S 1.8V, 2.3V, or 3.3V LDO (150nA I_QBATT)
S Lithium Cell Output Buffering
S Ultra-Thin, 3mm x 3mm x 0.5mm UTDFN Package
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to: www.maxim-ic.com/MAX17710.related
Simplified Operating Circuit
THINERGY
MEC101
RF OR OTHER
HIGH-VOLTAGE
SOURCE
TEG, SOLAR,
OR OTHER
LOW-VOLTAGE
SOURCE
BATT
PCKP
SEL2
CHG
REG
MAX17710
LX
FB
EP GND PGND
AE
LCE
SEL1
UNREGULATED
OUTPUT
REGULATED
OUTPUT
LDO
CONTROL
SIGNALS
THINERGY is a registered trademark of Infinite Power Solutions, Inc.
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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.