TP5410

(1A lithium battery charging and 5V/1A boost control chip)

describe

TP5410 is a single-cell lithium-ion battery charger and constant 5V boost controller for mobile power supply. The charging part integrates functions such as high-precision voltage and charging current regulators, pre-charging, charging status indication and charging cut-off. Output maximum 1A charging current. The boost circuit adopts a VFM switching DC/DC boost converter with extremely low no-load current manufactured by CMOS technology. It has extremely low no-load power consumption (less than 10uA), and the boost output drive current capability can reach 1A. No need for external keys, plug and play.

The charging part is a linear step-down method, with a built-in PMOSFET and an anti-backflow circuit, so no external detection resistors and isolation diodes are required. Thermal feedback automatically adjusts the charge current to limit the die temperature during high power operation or high ambient temperature conditions, and the full voltage is fixed at 4.2V. The charge current can be set externally with a resistor. When the battery reaches 4.2V, the charging current gradually drops to 1/5 of the set current value, and the TP5410 will automatically terminate the charging. The boost part also has a built-in power NMOSFET, and the smaller internal resistance can provide driving energy up to 5V/1A. The higher integration level makes TP5410 work normally with only a small number of peripheral devices. TP5410 also integrates charging temperature protection, boost input power current limiting loop, can dynamically adjust current according to load conditions, and has fast response and overcurrent shutdown functions. The boost converter adopts the frequency conversion method, so it has extremely low no-load power consumption, ripple, stronger driving ability and higher efficiency than similar products at home and abroad.

Features

★Programmable charging current up to 1000mA typical, up to 1.2A;

★Up to 1A boost output current (Vbat=3.3V), the highest output is 1.5A (Vbat=3.8v);

★Automatic frequency adjustment (VFM), adapt to different boost loads (5V no-load standby current is less than 10uA), no need to press a button to start low battery voltage (less than 2.7V) and automatically stop boosting;

Special circuit for single-cell lithium-ion battery mobile power supply;

High boost efficiency: 88% (Typ), maximum 92%;

Constant current/constant voltage operation with thermal regulation to maximize charging rate without danger of overheating;

4.2V preset charging voltage with an accuracy of ±1%;

5V preset boost accuracy with an accuracy of ±2.5%, and the 5V voltage can be fine-tuned through an external resistor;

The highest input can reach 10V;

2 charging status indications: open-drain output drives LEDs;

·C/5 charge termination current;

Trickle charge C/5 below 2.9V;

·Charging soft start reduces inrush current;

No MOSFETs, sense resistors or blocking diodes required;

· 8-pin ESOP thermally enhanced package.

application

·mobile power

·Portable device

Absolute Maximum Ratings

·Input power supply voltage (VCC): -0.3V～12V

·PROG: -0.3V～VCC+0.3V

·BAT: 0V～7V

LX: -2V～10V

·VOUT: -0.3V～10V

·CHRG: -0.3V～10V

BAT short circuit duration: continuous

BAT pin current: 1200mA

Boost maximum output current 1.8A/5V

·Maximum junction temperature: 145℃

·Working environment temperature range: -40℃～85℃

·Storage temperature range: -65℃～125℃

·Pin temperature (soldering time 10 seconds): 260℃