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PDF TD9054 Data sheet ( Hoja de datos )
| Número de pieza | TD9054 | |
| Descripción | 0.8A Standalone Linear Li-lon Battery Charger | |
| Fabricantes | Techcode | |
| Logotipo |  |
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T echcode®
0.8A Standalone Linear Li-lon Battery Charger with Thermal Regulation
DATASHEET
TD9054
General Description
Features
The TD9054 is a complete constant‐current/constant‐voltage
linear charger for single cell lithium‐ion batteries. Its SOT23‐5
package and low external component count make the
TD9054 ideally suited for portable applications. Furthermore,
the TD9054 can work within USB and wall adapter. No
blocking diode is required due to the internal PMOSFET
architecture and have prevent to negative Charge Current
Circuit. 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 TD9054 automatically terminates
the charge cycle when the charge current drops to 1/10th
the programmed value after the final float voltage is
reached.
TD9054 Other features include current monitor, under voltage
lockout, automatic recharge and charge status pin to indicate
charge termination.
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Rquired
Complete Linear Charger in SOT23‐5 Package for Single
Cell Lithium‐Ion Batteries
Constant‐Current/Constant‐Voltage
Charges Single Cell Li‐Ion Batteries Directly from USB Port
Preset 4.2V Charge Voltage with 1.5% Accuracy
Automatic Recharge
Charge Status Output Pins
C/10 Charge Termination
2.9V Trickle Charge Threshold
Soft‐Start Limits Inrush Current
Available Radiator in SOT23‐5 Package, the Radiator
need connect GND or impending
Applications
Cellular Telephones, PDAs, GPS
Charging Docks and Cradles
Digital Still Cameras, Portable Devices
USB Bus‐Powered Chargers, Chargers
Package Types
Figure 1. Package Types of TD9054
March, 20, 2013. Techcode Semiconductor Limited www.techcodesemi.com
1
1 page  
T echcode®
0.8A Standalone Linear Li-lon Battery Charger with Thermal Regulation
Typical Application Circuit
DATASHEET
TD9054
Vin=5V
0.4
10uF
4
Vcc
3
BAT
Bat+
10uF Li‐ion
Bat‐
1k
1 CHRG
5
PROG
RPROG
GND
2
March, 20, 2013. Techcode Semiconductor Limited www.techcodesemi.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TD9054.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TD9054 | 0.8A Standalone Linear Li-lon Battery Charger | Techcode |
| TD9056 | 1A Standalone Linear Li-lon Battery Charger | Techcode |
| TD9056A | 1A Standalone Linear Li-lon Battery Charger | Techcode |
| TD9056B | 1A Standalone Linear Li-lon Battery Charger | Techcode |
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