Preliminary Datasheet
LP4062
600mA
Standalone Linear Li-Ion Battery Charger with
Thermal Regulation in ThinSOT
General Description
The LP4062 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 LP4062 ideally suited for portable applications.
Furthermore, the LP4062 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 LP4062
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, under-voltage lockout, automatic recharge
and a status pin to indicate charge termination and the
presence of an input voltage.
Features
Programmable Charge Current Up to 600mA
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
LP4062 -
□ □ □ □
□
F: Pb-Free
LED
R
2
Typical Application Circuit
Vin
4
1
1uF
+
VCC
CHRG
GND PROG
5
+
3.3K
1uF
BATT
BAT
3
Package Type
B5: SOT23-5
LP4062B5F
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA/DSC
Marking Information
Please see website.
Bluetooth Applications
LP4062 –00
Ver. 1.0 Datasheet
Nov.-2007
Page 1 of 13
POWER [ LOWPOWER SEMICONDUCTOR INC ]
