CM9100 Datasheet, PDF (1/11 Pages) California Micro Devices Corp – Basic Compact Cost-effective Fast-Charger

PRELIMINARY
CM9100
Basic Compact Cost-effective Fast-Charger
Features
• Monolithic linear charger requires no inductors,
external sense resistors or blocking diodes.
• A few external components are required
• 4.75V to 6.5V operating input voltage range.
• Programmable the charging current to achieve the
fastest charging rate without the risk of overloading
the adapter
• Thermal limit control of charging current prevents
overheating
• Maximum of 1µA battery drain current
• Charging-current monitor output for system super-
vision of charging status
• TQFN-16, RoHS compliant lead-free package
Applications
• Cellular phones and smart phones
• PDAs Portable Media Viewers
• Digital Still Camera
• Cradle Chargers
Product Description
The CM9100 is an integrated linear-mode charger for
single-cell, Lithium-ion batteries. It designed for com-
pact and cost-sensitive handheld devices. It provides
programming charge current, charge status indicator,
high accuracy fast charge current and automatic
charge voltage regulation. It requires no external block-
ing diodes or current sense resistors and needs only
one external resistor to program the charging current.
The CM9100 provides Precharge, Fast-charge (con-
stant-current), and Termination (constant-voltage)
charging modes. The Precharge/Termination currents
are preset to 10/5% of the Fast-charge current level. A
host system can monitor the actual charge current at
the ISET pin.
When the chip temperature reach 140°C, the CM9100
goes into a latched shutdown mode stop charging until
the chip temperature is below 140°C will gradually
charge and 105°C resume fast charge. When the
adapter is not present, the CM9100 draws less than
1µA of drain current from the battery in ultra low power
sleep mode.
The CM9100 is packaged in a miniature 16-pin TQFN.
It can operate over the ambient temperature range of
-40°C to 85°C.
Typical Application
Vin
1k
VIN
VOUT
4.7u
GND
4.7u
5k
CM9100 _STAT
ISET
Li-ion
Battery
VSTB
1u
VREF
0.1u
© 2006 California Micro Devices Corp. All rights reserved.
06/30/06 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 l Tel: [phone] l Fax: [phone] l www.cmd.com
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