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M62240FP Datasheet(PDF) 1 Page - Renesas Technology Corp |
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M62240FP Datasheet(HTML) 1 Page - Renesas Technology Corp |
1 / 7 page REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 1 of 6 M62240FP Single Chip Battery Charger Control IC REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Description The M62240FP is a general purpose battery charger control IC. It can control all of the sequence needed for battery charging, it also has functions such as detection of battery temperature, a protection against over-current/voltage, a safety timer and so on. Moreover, it can adapt to charge Ni-Cd, Ni-MH batteries by adding few peripheral components. The IC has the feedback control of the charge current and output voltage. Features • Low voltage (3 V) operation • Built-in following functions and circuits; CR oscillator for internal logic Initialization timer and safety timer for ∆V error detection and over-charging D/A converter and shift registers to maintain the peak voltage of battery Main output SW driving circuits LED driving circuit for displaying the status of the charging System reset circuit for detecting the power supply voltage Temperature detection circuit for the Ni-MH battery Voltage and current control circuits for feedback to the primary side of the SMPS. Protective functions including detection of over-voltage in charge mode and over-current in adapter mode and so on Application Battery charger for video cameras and handheld telephones, etc. Block Diagram P.C ISET1 ISET2 20 1 710 19 GND 45 Rc Cc TEST OC SET 12 11 14 9 8 6 3 18 16 13 2 17 SYSTEM RESET CHT. STABLED PWR. SUP. LED DRIVER OUTPUT SW DRIVER Batt SW VTR SW Batt T Batt+ Batt − BATTERY TEMP DET. CKT. BATT. VOLTAGE DET. CKT. OVER-CURRENT DET. CKT. −∆V ERROR DET. PREV. LOGIC OSCILLATOR CLOCK GEN. CKT. TEST CKT. VOLTAGE SET-UP CKT. CURRENT SET-UP CKT. VCC Vref1 Vref2 VDET IDET LED Chg SW 15 CONTROL LOGIC + − + − |
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