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LP4030
3A High Efficiency Switching Charger
LP4030 Rev0.3 Mar.-2022
Features
0.5% Charge Voltage Accuracy
3A Maximum Charge Current
Up to 92% Efficiency
Dynamic Power Management for Different Input
Source Capacity Application
No External MOSFETs and Reverse-Blocking
Diode Required
Trickle Current/Constant Current/Constant Voltage
Mode Supported
Charge Termination and Automatic Recharge
Maximum Input Voltage up to 28V with 7V
Input-Over-Voltage Protection
Battery Under/Over Temperature Protection
Junction Over Temperature Protection
Cycle-by-Cycle Current-Limit Protection
ESD Protection
Package: 3x3mm DFN-10
Applications
Portable Media Players
Cellular and Smart Mobile Phone
Handheld Battery-Powered Devices
Charging Docks and Cradles
General Description
The LP4030 device is a highly-integrated switching
charger for single cell Li-Ion and Li-Polymer battery. The
device includes dual integrated N-channel power
MOSFETs and a constant-frequency synchronous PWM
controller.
The device supports charge current up to 3A and can
withstand an input voltage up to 28V. The device is
disabled while the input voltage exceeds the input
over-voltage-protection threshold. The BAT pin can
withstand a voltage up to 24V, which is designed for
protecting the device from an over-shoot voltage in
battery application systems.
The device provides various safety features for battery
charging, including battery under/over temperature
protection by an NTC monitoring circuit, device junction
over temperature protection and cycle-by-cycle inductor
current-limit protection. There is an input voltage
regulation loop for dynamic power management by
reducing the charge current when the input source
current capacity is lower than the programmed charge
current. The STAT output indicates the charging status.
The LP4030 is available in a DFN-10 (3x3mm) package.
Order Information
LP4030
F: Pb-Free
Package Type
QV: DFN-10
Battery Voltage
Default:4.2V
435:4.35V
44:4.4V
DFN-10
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LP4030
LP4030 Rev0.3 Mar.-2022
Marking Information
Part Number
Top Marking
Battery Voltage
Package
Shipping
LP4030QVF
LPS
LP4030
YWX
4.2V
DFN-10
5K/REEL
LP4030QVF-435
LPS
LP4030
435YWX
4.35V
DFN-10
5K/REEL
LP4030QVF-44
LPS
LP4030
44YWX
4.4V
DFN-10
5K/REEL
Marking indication:
LPS：LPS prefix.
LP4030：Product code of LP4030QVF.
435/44：Battery Voltage.
Y: Year code.
W: Week code.
X: Batch numbers.
Typical Application Circuit
V
BAT
V
IN
IN
1
PMID
4
PGND
5
BAT
10
SW
8
BST
7
CSP
9
STAT
2
LP4030
TS
AGND
6
47nF
C3
2.2µH
L1
20m��
R
CS
LED1
R
T1
V
IN
R
T2
NTC
C2
10µF
C1
1µF
3
C4
10µF
R1
1kΩ
8.2kΩ
20kΩ
10kΩ
3950K