BL8578 Datasheet, PDF (1/7 Pages) SHANGHAI BELLING CO., LTD. – Max.1.6A Li-ion Switching Charger IC

BL8578
DESCRIPTION
The BL8578 is a 1.6A Li-Ion battery switching
charger intended for 5V adapters. Low power
dissipation, an internal MOSFET and its compact
package with minimum external components
requirement makes the BL8578 ideal for portable
applications. The BL8578 includes complete
charge termination circuitry, automatic recharge
and a ±1% 4.2V/4.35V float voltage.
External sense resistor and Reverse diode is not
need. Build-in thermal feedback mechanism
regulates the charge current to control the die
temperature during high power operation or at
elevated ambient temperature.
Battery charge current, charge timeout and end-
of-charge indication parameters can program by
external components. Additional features include
shorted cell detection and overvoltage protection.
The BL8578 is available in DFN3x3-10L package.
Max.1.6A Li-ion Switching Charger IC
FEATURES
 Very Low Power Dissipation
 1.6A Maximum Charge Current
 Standalone Capability with no Requirement
of External MOSFET, Sense Resistor or
Blocking Diode
 Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
 Charges Single Cell Li-Ion Batteries Directly
from USB Port
 Drainage Charge Current Thermal Regulation
Status Outputs for LED or System Interface
 Optional Battery Temperature Monitoring
Before and During Charge Automatic Sleep
Mode for Low-Power
 Preset 4.2V/4.35V float Voltage with ±1%
Accuracy
 Automatic Recharge
 Available in DFN3x3-10L Package
 RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
 Cellular Telephones, PDA, MP3 Players
 Charging Docks and Cradles
 Handheld Battery-Powered Devices
 Handheld Computers
TYPICAL APPLICATION
PIN OUT & MARKING
L1 1uH
5V USB
Input
R2
110K
C1
10uF
R3
75K
R1
330
OFF _ON
VIN
SW
BAT
Ctrl _BLLC86517018
CHRIN
FB
ISET
EN
CHRG
GND
R4 10k
C3
10uF
To 4.2V
Li-Ion Battery
C2
10uF
CHRG
ISET
Ctrl
EN
FB
4.2V
BAT
CHRIN
GND
SW
VIN
CHRG
ISET
Ctrl
EN
FB
4.35V
BAT
CHRIN
GND
SW
VIN
Device parameter should be select as typical application
DFN3x3-10L
BG: Product Code
LL: LOT NO. H: FAB Code
YW: Date code (Year & Week)
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