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EMC5754 Datasheet Preview

EMC5754 Datasheet

Standalone Linear Li-Ion Battery Charger

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EMC5754 pdf
Elite MicroPower Inc.
Preliminary
EMC5754
Standalone Linear Li-Ion Battery Charger with
Thermal Regulation in SOT-25
General Description
The EMC5754 is a complete linear charger for single cell
lithium-ion batteries. With small SOT-25 package and
few external components, EMC5754 is well suited for
portable applications. In addition, the EMC5754 is
specifically designed to work within USB power
specifications.
No external sense resistor and blocking diode are
required. Charging current can be programmed
externally with a single resistor. The built-in thermal
regulation facilitates charging with maximum power
without risk of overheating.
The EMC5754 always preconditions the battery with
1/10 of the programmed charge current at the
beginning of a charge cycle, until 40µs after it verifies
that the battery can be fast-charged. The EMC5754
automatically terminates the charge cycle when the
charge current drops to 1/10th the programmed value
after the final float voltage is reached.
The EMC5754 consumes zero reverse current from the
battery at standby, shutdown and sleep modes. This
feature reduces the charge and discharge cycles on
the battery, further prolonging the battery life. The
EMC5754 can also be used as a LDO when battery is
removed. Other features include shutdown mode,
www.DataSheet4Uc.hcaormge current monitor, under voltage lockout,
automatic recharge and status indicator.
Features
Programmable charge current up to 1A
No MOSFET, sense resistor or blocking diode
required
Complete linear charger in SOT-25 for single cell
Lithium-ion batteries
Typical zero reverse current from battery
Thermal regulation maximizes charge rate
without risk of overheating
Charges single cell Li-ion batteries directly from
USB port
Act as a LDO when battery is removed
Preset 4.2V charge voltage with ±1% accuracy
Automatic recharge
Charge status indicator
C/10 charge termination
45µA shutdown supply current
2.9V trickle charge threshold
Soft-start limits inrush current
RoHS compliant and Pb-free
Applications
Wireless handsets
Hand-held instruments
Portable information appliances
Bluetooth application
Charging docks and cradles
Typical Application Diagram
580 mA Charger
LDO Mode
(Battery Removed)
Typical Performance Characteristics
Complete Charge Cycle (850mAh Battery)
Time (1000s/DIV)
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders
DSC5754_V2.1 June 10th 2008
Page 1 of 17
www.elitemicropower.com



EMP
EMP

EMC5754 Datasheet Preview

EMC5754 Datasheet

Standalone Linear Li-Ion Battery Charger

No Preview Available !

EMC5754 pdf
Elite MicroPower Inc.
Pin Configuration
SOT-25(Top View)
Preliminary
EMC5754
Order information
EMC5754--00VF05GRR
00 Operation
VF05 SOT-25 Package
GRR RoHS package
Commercial Grade Temperature
Rating: -40 to 85°C
Package in Tape & Reel
Marking & Packing Information
Package Type
Marking
Product ID
Transport Media
SOT-25
EMC5754-00VF05GRR 3K units Tape & Reel
www.DataSheet4U.com
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders
DSC5754_V2.1 June 10th 2008
Page 2 of 17
www.elitemicropower.com


Part Number EMC5754
Description Standalone Linear Li-Ion Battery Charger
Maker EMP
Total Page 17 Pages
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