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LP4068H
LP4068H Rev0.5 Sep.2023
36V/800mA Standalone Single-Cell Linear Charger
Features
⚫ Easy-to-use standalone single-cell charger
⚫ High input voltage linear charger
- Support up to 7V input voltage with 36V absolute
maximum input rating
- Maximum BAT withstand voltage up to 14V
- Programmable up to 800mA fast charge current
- Trickle current 10% of fast charge current
- Termination current 10% of fast charge current
⚫ High integration
- Integrated reverse blocking MOSFET
- Built-in charge current sensing
- Internal loop compensation
- Integrated charge status indication
⚫ Support full charge cycle of trickle current mode,
constant current (CC) mode, constant voltage (CV)
mode, charge termination and automatic recharge
⚫ BAT leakage current 30nA typical
⚫ Protection features
- Input under-voltage lockout (UVLO)
- Over-voltage protection (OVP)
- Battery reverse connection protection
- Thermal regulation foldback
⚫ RoHS Compliant and 100% Lead (Pb)-Free
⚫ Package: SOT23-5
General Description
The LP4068H device is a highly advanced linear charger
for single-cell Li-Ion and Li-Polymer batteries. The device
is ideally suited for portable applications due to the small
SOT23-5 package and low number of external
components required.
The device employs a full charge algorithm with trickle
current, constant current (CC), constant voltage (CV)
modes, charge termination and automatic recharge. The
device supports charge current up to 800mA,
programmed by an external resistor. The device can
withstand an input voltage up to 36V, which can protect
the charger from the accidental insertion of high voltage
and hot plug-in. The device can withstand a BAT voltage
up to 14V, which is suited for power battery applications.
Without an input supply, the battery reverse current is
only 30nA typical.
The device provides various safety features for battery
charging, including input under voltage lockout (UVLO),
input over-voltage protection (OVP), battery reverse
connection protection, and thermal regulation foldback
protection that is implemented by reducing the charge
current while the junction temperature reaches 140℃.
The LP4068H is available in a SOT23-5 package.
Order Information
Applications
⚫ Wireless Speaker
⚫ Cordless Power Tools
⚫ Gaming Devices
⚫ Portable Media Players
⚫ Handheld Battery-Powered Devices
⚫ Charging Docks and Cradles
⚫ Power Bank
⚫ E-Cigarettes
LP4068H
F: Pb-Free
Package Type
B6: SOT23-6
Battery Voltage
Default:4.20V
405:4.05V
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LP4068H Rev0.5 Sep.2023
LP4068H
Device Information
Part Number
Top Marking
Battery Voltage
Moisture Sensitivity
Level
Package
Shipping
LP4068HB5F
LP4068
YWXA0
4.20V
MSL3
SOT23-5
3K/REEL
LP4068HB5F-405
LPS
BcYWX
4.05V
MSL3
SOT23-5
3K/REEL
Marking indication:
Y: Production year. W: Production week. X: Series number.
Typical Application Circuit
V
IN
C
IN
C
OUT
LED1
1-10μF
1-10μF
IN
BAT
CHRG
GND
LP4068H
2kΩ
V
BAT
R
IN
4.7Ω
R
ISET
ISET
Battery
(0603)
R
1