LP4076H-05 Jul.-2021 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 9
Preliminary Datasheet LP4076H
1A Single Chip Li-Ion and Li-Polymer Charger
General Description
The LP4076H is a complete constant-current/
constant voltage linear charger for single cell
lithium-ion battery. Its ESOP8 package and low
external component count make the device ideally
suited for portable applications. No external sense
resistor is needed, and no blocking diode is required
due to the internal MOSFET architecture. Thermal
feedback regulates the charge current to limit the die
temperature during high power operation or high
ambient temperature. The charge voltage is fixed at
V
FLOAT
, and the charge current can be programmed
externally by ISET pin with a single resistor.
The LP4076H automatically terminates the charge
cycle when the charge current drops to 1/10 setting
current value after the final float voltage is reached.
When the input supply is removed, the device
automatically enters a low current state, dropping the
battery drain current to less than 2µA.
Other features include charge current monitor, under
voltage lockout, automatic recharge and charge
status pins.
Order Information
LP4076H
F: Pb-Free
Package Type
SP: ESOP8
Battery Voltage
Default: 4.2V
435: 4.35V
Features
Input Voltage up to 28V
Input Over Voltage Protection：7V
Short-circuit protection
Programmable Charge Current up to 1A
1µA Battery Reverse Current
Protection of Reverse Connection of Battery
No MOSFET, Sense Resistor or Blocking Diode
Required
Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
ESOP8 Package
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Portable Media Players/Game
Power Bank
Bluetooth Applications
PDA/MID
Marking Information
Device
Marking
Package
Shipping
LP4076HSPF
LPS
LP4076H
YWX
ESOP8
4K/REEL
LP4076HSPF
-435
LPS
LP4076H
435YWX
ESOP8
4K/REEL
Marking indication:
Y:Production year W:Production week X:Series number
LP4076H-05 Jul.-2021 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 9
Preliminary Datasheet LP4076H
Functional Pin Description
Package Type
Pin Configurations
ESOP8
TS
ISET
GND
IN
EN
CHRG
FULL
BAT
1
2
3
4 5
6
7
8
ESOP-8
TOP VIEW
9
GND
Pin Description
No.
NAME
DESCRIPTION
1
TS
Temperature Detection Pin. Connect this pin to GND or set the voltage at this pin
under 0.3V to disable TS function
2
ISET
Charge Current Program. The charge current is programmed by connecting a 1%
resistor (R
ISET
) to ground.
3,9
GND
GND is the connection to system ground.
4
IN
IN is the input power source. Connect to a wall adapter.
5
BAT
BAT is the connection to the battery. Typically a 10µF tantalum capacitor is needed
for stability when there is no battery attached. When a battery is attached, only a 1uF
ceramic capacitor is required.
6
FULL
Open-Drain Charge Status Output. When the battery is charging, the FULL pin could
be pulled High by an external pull high resistor. When the charge cycle is completed,
the pin is pulled Low by an internal N-MOS.
7
CHRG
Open-Drain Charge Status Output. When the battery is charging, the CHRG pin is
pulled low by an internal N-MOS. When the charge cycle is completed, the pin could
be pulled High by an external pull high resistor.
8
EN
Charge Enable Input (active high).