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LP4055QVF

Description
With OCP, OTP 800MA linear charging
CategoryPower/power management    Battery power management chip   
File Size334KB,8 Pages
ManufacturerLowPower Semiconductor ( LPS)
Websitehttp://www.lowpowersemi.com/html/EN/ABOUT/
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LP4055QVF Overview

With OCP, OTP 800MA linear charging

Preliminary Datasheet
LP4055
800mA Linear Li-Ion Battery Charger
with Protection of Reverse Connection of Battery
General Description
The LP4055 is a complete constant-current/constant- voltage
linear charger for single cell lithium-ion batteries. Its SOT23-5/
TDFN-6
package and low external component count make the
LP4055 ideally suited for portable applications. Furthermore,
the LP4055 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 LP4055 automatically terminates the charge cycle
when the charge current drops to 1/10th the programmed value
after the final float voltage is reached. When the input supply
(wall adapter or USB supply) is removed, the LP4055
automatically enters a low current state, dropping the battery
drain current to less than 1µA. Other features include charge
current monitor, automatic recharge and a status pin to indicate
charge termination.
Features
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Required
Protection of Reverse Connection of Battery
Constant-Current/Constant-Voltage Operation with
Thermal Regulation to Maximize
Charge Rate Without Risk of Overheating
4.2V /4.35V Charge Voltage with ± 1% Accuracy
Charge Current Monitor Output for Gas Gauging
Automatic Recharge
2.9V Trickle Charge Threshold
C/10 Charge Termination
Output OCP
Charging OTP
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA/DSC
Bluetooth Applications
Order Information
LP4055
□ □
□ □
BAT Voltage
Default: 4.2V
43: 4.35V
F: Pb-Free
Package Type
B5: SOT23-5
QV:TDFN-6
Marking Information
Part
LP4055B5F
LP4055QVF
Marking
LPS
BBYWX
LPS
BBYWX
Marking indication:
Y:Production year W:Production week X:Production batch.
TDFN-6
4K/REEL
Package
SOT23-5
Shipping
3K/REEL
LP4055-04
Jun.-2018
Email:
marketing@lowpowersemi.com
www.lowpowersemi.com
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