TP4054 Top Power ASIC Li-Ion Battery Charger Data Sheet

Download Datasheet for Top Power ASIC TP4054 Standalone Linear Li-Ion Battery Charger with Thermal Regulation [14 pages pdf/zip]

SKU: TOPPOWERASICCORPTP4054DS Category: Brand:

Description

The TP4054 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the TP4054 ideally suited for portable applications. Furthermore, the TP4054 can work within USB and wall adapter.

DATASHEET CONTAINS:

FEATURES

APPLICATIONS

TYPICAL APPLICATION

ABSOLUTE MAXIMUM RATINGS

TP4054 PINOUT

PACKAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

TYPICAL PERFORRMANCE CHARACTERISTICS

PIN FUNCTIONS

BLOCK DIAGRAM

OPERATION
– Normal Charge Cycle
– Programming Charge Current
– Charge Termination
– Charge Status Indicator
– Undervoltage Lockout
– Manual Shutdown
– Automatic Recharge
– Figure 1. State Diagram of a Typical Charge Cycle
– Stability Considerations
– Figure 2. Isolating Capacitive Load on PROG Pin and Filtering
– Power Dissipation
– Thermal Considerations
– Increasing Thermal Regulation Current
– Figure 3. A Circuit to Maximize Thermal Mode Charge Current
– Figure 4. Charge Current vs RCC
– VCC Bypass Capacitor
– Charge Current Soft-Start
– Figure 5. Using a Microprocessor to Determine CHRG State
– Figure 6. Low Loss Input Reverse Polarity Protection
– Figure 7.Combining Wall Adapter and USB power

PACKAGE DESCRIPTION

TYPICAL APPLICATIONS