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M61048FP Datasheet(PDF) 1 Page - Renesas Technology Corp |
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M61048FP Datasheet(HTML) 1 Page - Renesas Technology Corp |
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Rev.1.00 Mar 04, 2005 page 1 of 23 M61048FP Battery Protection Analog Front End (AFE) IC REJ03F0129-0100 Rev.1.00 Mar 04, 2005 Description The M61048FP is intended to be used as SB: Smart Battery. All functions needed for SB are packed to this M61048FP. The combination use with microcomputer such as M37512 will give various functions such as a detection of SB Remaining Capacity. The reset circuit and the linear regulator for Vcc/Vref of microcomputer are dedicated in M61048FP. So this will help easy design of power circuit design of SB. Features • All FETs are controlled by microcomputer • Built-in low dropout series regulator for microcomputer • Built-in battery voltage monitor circuit of each battery cell • Built-in output selector, which outputs the voltage each selected battery cell • Built-in discharge circuit of each battery cell • Built-in voltage detection circuit of each battery cell • Built-in FET OFF function controlled by microcomputer • Various powers saving function to reduce total power dissipation • 3-wire serial data transfer system for communication from microcomputer • High Input Voltage Device (Absolute Maximum Rating: 33 V) • CMOS monolithic IC Application • Smart Battery System Block Diagram Multiplexer circuit Reset circuit Series regulator Serial to Parallel conversion circuit Battery cell 1-4 voltage analog output Battery cell voltage detection circuit FET control circuit VCC VIN12 CFET PCFET VREG VIN1 DFETCNT CFETCNT DFET VIN2 VIN3 VIN4 GND RESET CS CK DI ANALOG |
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