EUP8057
怎
Advanced 1A Linear Charge
Management Controllers
DESCRIPTION
The EUP8057 is a highly advanced Lithium-Ion (Li-Ion)
and Lithium–Polymer (Li-Pol) linear charge management
controller for use in cost sensitive and portable
applications. It combines high accuracy constant-current
and constant-voltage regulation, cell preconditioning,
temperature monitoring, automatic charge termination,
charge-status indication, in a space-saving MSOP-8,
TSSOP-8 package.
The EUP8057 applies a constant current up to 1A to the
battery and the charge current can be programmed
externally with a sense-resistor.
The EUP8057 automatically terminates the charge cycle
when the charge current drops to the charge termination
threshold (I
TERM
) after the charge-regulation voltage is
reached.
When the input supply is removed, the EUP8057
automatically enters a low-power sleep mode.
A battery charge state output pin is provided to indicate
battery charge status through a display LED. The battery
charge status output is a serial interface which may also be
read by a system microcontroller.
FEATURES
4.5V-15V Wide Input Voltage Range
Ideal for Single Cell (4.1V or 4.2V) and Dual-Cell
(8.2V or 8.4V) Li-Ion or Li-Pol Batteries
Preset Charge Voltage with ±1% Accuracy
Programmable Charge Current up to 1A
Constant-Current/Constant Voltage Operation
Preconditioning of Low Voltage Cells
Optional Cell-Temperature Monitoring Before and
During Charge
Charge Status Output for Single of Dual Led or
Host Processo
r
Interface
Automatic Battery Recharge
Charge Termination by Minimum Current
Automatic Low-Power Sleep Mode When Input
Power is Removed
Available in TSSOP-8, MSOP-8 and SOP-8
Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Cellular Phones / PDAs/ MP3 Players/DSC
Handheld Instruments
DS8057 Ver 1.8 Nov. 2006
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
