Preliminary Datasheet
LP4060A
800mA
Standalone Linear Li-Ion Battery Charger with
Thermal Regulation in ThinSOT
General Description
The LP4060A is a complete constant-current/constant-
voltage linear charger for single cell lithium-ion batteries.
Its ThinSOT package and low external component count
make the LP4060A ideally suited for portable applications.
Furthermore, the LP4060A is specifically designed to work
within USB power specifications. 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 4.2V, and the charge current can be
programmed externally with a single resistor. The
LP4060A automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed value
after the final float voltage is reached. Other features
include charge current monitor, undervoltage lockout,
automatic recharge and a status pin to indicate charge
termination and the presence of an input voltage.
Features
Programmable Charge Current Up to
800mA
No MOSFET, Sense Resistor or Blocking Diode
Required
Complete Linear Charger in ThinSOT
Package for
Single Cell Lithium-ion Batteries
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
Preset 4.2V Charge Voltage with ± 1% Accuracy
Available in SOT23-5 Package
Charge Current Monitor Output for Gas
Gauging
Automatic Recharge
2.9V Trickle Charge Threshold
C/10 Charge Termination
Order Information
LP4060A -
□ □ □ □
□
F: Pb-Free
LED
R
2
Typical Application Circuit
Vin
4
1
1uF
+
VCC
CHRG
GND PROG
LP4060J5F
LP4060B5F
BAT
3
Package Type
B5: SOT23-5
5
+
10K
1uF
BATT
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA/DSC
Marking Information
Please see website.
Bluetooth Applications
LP4060A – Ver. 1.0 Datasheet
Nov.-2007
Page 1 of 13
POWER [ LOWPOWER SEMICONDUCTOR INC ]
