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BA3170 Datasheet Trickle-charge Ic For Two-cell/ Lithium-ion Batteries

Manufacturer: ROHM

Overview: Regulator ICs Trickle-charge IC for two-cell, lithium-ion batteries BA3170 The BA3170 is a trickle-charge IC developed for two-cell, lithium-ion batteries.The IC includes a charge control circuit, a charge output transistor, and an LED driver for showing the charging status.

Datasheet Details

Part number BA3170
Manufacturer ROHM
File Size 130.18 KB
Description Trickle-charge IC for two-cell/ lithium-ion batteries
Datasheet BA3170_Rohm.pdf

General Description

s BA3170 FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 12V, R1 = 58.7kΩ, R2 = 10kΩ) 397 Regulator ICs BA3170 FOperation notes (1) Do not use values other than CT = 0.022µF for the timing capacitor, and C1 = 10µF for the output capacitor.

(2) For the output capacitor C1, use a tantalum capacitor with low capacitance variation with temperature, and a static capacitance tolerance of ±10% or less.

(3) For the timing capacitor CT, use a film capacitor with low capacitance variation with temperature, a static capacitance tolerance of ±10% or less, and a temperature variation rate of ±2% or less.

Key Features

  • 1) Output voltage can be varied using an external resistor. 2) The output pin is PNP output with low saturation voltage. 3) Built-in output current limiting circuit protects batteries from excessive current, and prevents destruction of the IC due to output shorts. The initial charge current is set to a low value (the current limit pin voltage can be used to vary the current limit value). 4) Pulse charging at over 99% of the final voltage. FAbsolute maximum ratings (Ta = 25_C) 5) 6) 7) 8) 9) Bu.

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