M61044FP Datasheet | Renesas

Description The M61044FP is an semiconductor IC device developed for smart battery packs. It incorporates all the analog circuitry required by smart batteries in a single chip. When used in conjunction with a microprocessor, it allows the implementation of a variety of functions, such as battery capacity detection, through the addition of minimal peripheral devices and is ideal for smart battery system (SBS) battery packs. The M61044FP also has an on-chip overcurrent detect circuit so that the FET for controlling battery charging and discharging is protected regardless of the processing speed of the microprocessor. The microprocessor can change the amplifier gain of the charge/discharge current detect circuit, so battery capacity detection accuracy is increased. In addition, the M61044FP incorporates a linear regulator that allows it to function as the power supply for the microprocessor, thereby simplifying power supply block design. Features - - - - - - On-chip high-gain op-amp for monitoring charge and discharge current. On-chip overcurrent detect circuit to protect FET. Charge/discharge FET can be controlled from microprocessor. Power-save function for reducing current consumption. 3.3 V operation to reduce microprocessor current consumption. High-voltage device (absolute maximum rating: 33 V). Application Smart battery system (SBS) battery packs This product is currently under development, and its specifications, pin assignments, etc., are subject to change. Pin Connection Diagram (Top View) VCC RESET VIN_1 VIN_2 VIN_3 VIN_12 DFOUT CFOUT 1 2 16 VREG 15 DI 3 4 5 6 7 8 14 CK 13 CS 12 CIN 11 Analog_out 10 VIN_11 9 GND Package: 16P-TSSOP Rev.1.0, Sep.19.2003, page 1 of 34 Block Diagram CFOUT VCC VREG Series regulator Regulator On/off control Power-down circuit Battery voltage detect circuit Charge/discharge current detect circuit FET control circuit Overcurrent detect circuit Delay circuit DFOUT VIN_12 RESET CK DI...