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 VCC 17 SYSTEM RESET CHT. P.C Vref1 Vref2 2 13 VDET IDET LED Chg SW 16 18 3 6 LED DRIVER OUTPUT SW DRIVER STABLED PWR. SUP. + 15 − VOLTAGE SET-UP CKT. + − ISET1 20 ISET2 1 GND 4 Rc REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 1 of 6 Batt SW 9 VTR SW CURRENT SET-UP CKT. OSCILLATOR 7 8 CONTROL LOGIC 5 Cc CLOCK GEN. CKT. OVER-CURRENT DET. CKT. BATTERY TEMP DET. CKT. 14 Batt T −∆V ERROR DET. PREV. LOGIC BATT. VOLTAGE DET. CKT. 11 Batt+ 12 Batt− TEST CKT. 10 19 TEST OC SET M62240FP Pin Arrangement M62240FP ISET2 1 20 ISET1 Vref1 2 19 OC SET LED 3 18 IDET Rc 4 17 VCC Cc 5 16 VDET Chg SW 6 15 P.C GND 7 14 Batt T Batt SW 8 13 Vref2 VTR SW 9 12 Batt− TEST 10 11 Batt+ (Top view) Outline: PRSP0020DA-A (20P2N-A) Pin Description Pin No. Pin Name Function 3 4, 5 LED Rc, Cc LED drive (Open collector outputs) Setting the oscillating frequency of the internal clocks. 6 7 Chg SW GND The SW drive terminal used for charging battery. (Open collector outputs) Ground 8 9 Batt SW VTR SW Checking whether a battery is mounted or not. (It has a pull-up resistor) Detecting VTR connection. (It has a pull-up resistor) 10 11 TEST Batt+ Test mode set-up. (It has a pull-up resistor) This is connected to the + terminal of the battery. 12 14 Batt– Batt T This is connected to the – terminal of the battery. This is connected to the temperature detecting terminal of the battery. 13 15 Vref2 P.C The voltage reference terminal for temperature detection. This is connected to the photo-coupler used for feedback. (It has a pull-up resistor) 16 18 VDET IDET Monitoring the output voltage. Detecting the charging current or output current. 19 20, 1 OC SET ISET1, 2 2 Vref1 Setting the over-current detection value in the adapter mode. These are used to the charging current. (ISET1 is for quick charge and ISET2 is for trickle charge) Setting the standard voltage for over-current set-up value and the charge current set-up. 17 VCC REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 2 of 6 Power supply. M62240FP Absolute Maximum Ratings (Ta = 25°C, unless otherwise noted) Item Supply voltage Ratings 16 Unit V VCC Chg SW terminal drive current LED drive current IChgSW ILED 50 20 mA mA P.C drive current Vref1 output current IP.C Iref1 20 –0.5 mA mA Vref2 output current Power dissipation Iref2 Pd –1 650 mA mW Thermal derating Operating temperature Kθ Topr 6.5 –20 to +75 mW/°C °C Storage temperature Tstg –40 to +125 °C Note: Symbol Conditions Ta = 25°C Ta > 25°C Polarity of current: The direction of current flowing into the IC is equivalent to the positive (+). The direction of current flowing out of the IC is equivalent to the negative (–). The voltage applied to the open collector output terminal should be less than the absolute maximum voltage of the power supply. The voltage difference between the negative terminal of the battery and the GND terminal should be 0 to 0.6 V. Electrical Characteristics (VCC = 7 V, Ta = 25°C, unless otherwise noted) All Device Item Symbol Min Typ Max Unit Supply voltage Circuit current VCC ICC 3.0 10.0 — 20.0 15.0 30.0 V mA Power supply detecting voltage VTHVCC 2.70 2.80 2.90 V Item Vref1 output voltage Symbol Vref1 Min 1.21 Typ 1.25 Max 1.30 Unit V Vref2 output voltage Vref2 1.73 1.80 1.87 V Test Conditions VCC = 7 V, when quick charge Reference Item Symbol Test Conditions Iref1 = 150 µA Iref2 = 350 µA Min Typ Max Unit OC SET terminal flow out current ISET1 terminal flow out current 1 IOCSET –1 — — µA VOCSET = 220 mV Test Conditions ISET1-1 30 50 85 µA Excluding charging time ISET1 terminal flow out current 2 ISET2 terminal flow out current 1 ISET1-2 ISET2-1 –1 30 — 50 — 85 µA µA When charging Excluding trickle charging time ISET2 terminal flow out current 2 ISET2-2 –1 — — µA When trickle charging Driver Item Chg SW terminal output flow out current LED output low voltage Min Typ Max Unit VsatChgSW Symbol — 0.3 0.6 V IChgSW = 30 mA VsatLED — 0.3 0.6 V ILED = 10 mA REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 3 of 6 Test Conditions M62240FP Control Section Item Symbol Min Typ Max Unit Range of input voltage Input bias current VIN IBias 0 –1 — — VCC — V µA P.C output low voltage VPCL — 0.3 0.6 V Test Conditions IP.C = 10 mA Each SW Detection Terminal Min Typ Max Unit Batt SW terminal flow out current Item IBattSW Symbol –240 –140 –80 µA VCC = 7 V, VBattSW = 0 V Test Conditions Batt SW terminal threshold voltage VTR SW terminal flow out current VTHBatt 3.0 4.0 5.0 V VCC = 7 V IVTRSW –240 –140 –80 µA VCC = 7 V, VVTRSW = 0 V VTR SW terminal threshold voltage VTHVTR 3.0 4.0 5.0 V VCC = 7 V Item Set-up output voltage at VTR mode Symbol VVTR Min 828 Typ 864 Max 900 Unit mV Set-up output voltage at charge mode ISET1 set-up voltage VCHG 1.21 1.26 1.30 V VISET1 124.8 130 135.2 mV When quick charging ISET2 set-up voltage OC SET set-up voltage VISET2 VOCSET 11.52 211.2 12.0 220 12.48 228.8 mV mV When trickle charging When VTR mode Voltage at the start of quick charging Over-voltage set-up voltage VCHG 0.40 0.54 0.68 V VOVP 0.91 0.95 0.99 V –∆V detection set-up voltage V–∆ V 70 100 130 mV Temperature detection set-up voltage VVTHH1 0.91 0.97 1.01 V Over-heating detection set-up voltage VO/H 0.82 0.86 0.90 V Internal Voltage Set-up Test Conditions After initialization timer has passed Temperature at the start of charging Charge stop temperature Internal Voltage Set-up Min Typ Max Unit Oscillation frequency Item fosc 9.42 10.24 11.06 kHz Initialization timer 1 Initialization timer 2 Tm1 Tm2 18.4 4.6 20.0 5.0 21.6 5.4 m m Battery voltage < 5 V Battery voltage ≥ 5 V Safety timer 1 Safety timer 2 Tms1 Tms2 4.6 4.6 5.0 5.0 5.4 5.4 h h When quick charging When trickle charging Over-current detection time Toc 9.2 10.0 10.8 s When VTR mode Note: Symbol Each timer is set at an oscillation frequency of 10.24 kHz. REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 4 of 6 Test Conditions Rc = 30 kΩ, Cc = 2200 pF LED1 REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 5 of 6 3 D1 5 4 Cc 2200 pF 30 kΩ Rc Cc Rc R11 19 R12 4.4 kΩ 20.6 kΩ 2 R13 R14 R3 1.2 kΩ R4 R15 120 Ω 1 N.C 10 7 18 14 12 11 6 Q1 8 9 Batt SW VTR SW Vref2 13 Batt T Batt − Batt + Chg SW IDET 0.1 Ω ISET2 TEST GND 1.12 kΩ 20 ISET1 M62240FP 11.26 kΩ Vref1 OC SET LED (CHARGE LED) 16 VDET CP2 CP1 15 P.C P.C R1 17 C2 VCC + R2 8.8 kΩ R10 R9 R6 SW3 SW2 3 kΩ 1 kΩ R8 9 kΩ D2 R5 T − + To Battery To VTR M62240FP Application Example M62240FP Package Dimensions JEITA Package Code P-SOP20-5.3x12.6-1.27 RENESAS Code PRSP0020DA-A Previous Code 20P2N-A MASS[Typ.] 0.3g 20 E *1 HE 11 F 1 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 10 c Index mark *2 A2 D A1 L A Reference Symbol *3 e bp y Detail F D E A2 A1 A bp c HE e y L REJ03F0239-0200 Rev.2.00 Sep 14, 2007 Page 6 of 6 Dimension in Millimeters Min Nom Max 12.5 12.6 12.7 5.2 5.3 5.4 1.8 0.1 0.2 0 2.1 0.35 0.4 0.5 0.18 0.2 0.25 0° 8° 7.5 7.8 8.1 1.12 1.27 1.42 0.1 0.4 0.6 0.8 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. 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