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| MITSUMI Driver IC for Vibrators MM1426 Driver IC for Vibrators Monolithic IC MM1426 Outline This IC was developed as a driver for vibrator motors, and has an output voltage set at 1.3V. The input voltage is monitored, and if a constant voltage is not input the output is turned off. Features 1. Compact package for small mounting area. 2. In addition to output control through the input voltage, the IC can be turned on and off through the CONT pin. 3. Good ripple rejection. 4. Output currents of up to 150mA. 5. Operating voltage of up to 12V. 6. Output voltage is available in 0.1V steps from 1.2V to 2.0V. Package SOT-25A Applications Cellular phones, PHS, game, pagers. Pin Assignment 1 5 4 2 3 1 2 3 4 5 SOT-25 CONT GND N.C VOUT VIN MITSUMI Driver IC for Vibrators MM1426 Equivalent Circuit Diagram Pin Description Pin No. Pin name 1 CONT Functions Output voltage on/off-control pin VCONT L H Output OFF ON Equivalent circuit diagram Connect cont-terminal with VIN, when it is not used. 2 3 4 5 GND N.C VOUT VIN Regulator Output pin Voltage-supply input pin Output voltage is not output when input voltage is less than input voltage detection value. Note that consumption current flows even when output voltage is OFF due to input voltage detection. Turn output OFF with the CONT pin in order to suppress consumption current completely. GND pin MITSUMI Driver IC for Vibrators MM1426 Absolute Maximum Ratings Item Operating temperature Storage temperature Supply voltage Output current Power dissipation Symbol TOPR TSTG VCC IOUT Pd Ratings -20~+75 -40~+125 -0.3~+12 200 150 (Alone) Unit C C V mA mW Recommended Operating Conditions Item Operating temperature Output current Operating voltage Symbol TOPR IOP VOP Ratings -20~75 0~150 1.8~12 Unit C mA V Electrical Characteristics Item Output voltage No-Load input current Input current 1 (OFF) Input current 2 (OFF) Line regulation Load regulation Vo temperature coefficient (Except where noted otherwise, Ta=25C) Measurement conditions VIN=3.5V Io=30mA VIN=3.5V Io=0mA VIN=1.8V VCONT=1.6V VIN=3.5V VCONT=0V VIN=3V~5V Io=30mA VIN=3.5V Io=0~100mA Tj=-20~+75C VIN=3.5V Io=30mA VIN=3.5V f=120Hz VRIPPLE=1VP-P, Io=30mA VIN=H L Io=30mA L Io=30mA 55 2.0 10 30 100 70 2.1 200 2.6 500 5 1.6 -0.3 10 VIN+0.3 0.4 2.8 2.2 Min. Typ. Max. Unit -3% VO 120 80 +3% 240 160 0.1 20 60 V A A A mV mV ppm/C dB V ppm/C V mV A V V Symbol Vo Iccq1 Iccq2 Iccq3 V1 V2 Vo/ T RR VSL VSL/ T VSH Vonh ION H L Ripple rejection VIN low detector voltage VIN low detector voltage temperature coefficient VIN high detector voltage High threshold voltage Cont terminal current High threshold voltage Low threshold voltage Tj=-20~+75C VIN=H VIN=L VIN=H H Io=30mA L, L H VCONT=1.6V MITSUMI Driver IC for Vibrators MM1426 Measuring Circuit Application Circuits NOTE 1 : This regulator is not internally compensated and thus requires an external output-capacitor (COUT) for stability. Timing Chart 2.6V 2.1V VIN 0V H CONT L 1.3V 0V VOUT MITSUMI Driver IC for Vibrators MM1426 Characteristics Load regulation Load regulation (mV) 60 40 20 0 -20 -40 -60 0 20 40 60 80 100 120 140 Line regulation Line regulation (mV) 10 5 0 -5 -10 4 6 8 10 12 Output current (mA) VIN (V) Current limit Output voltage (V) 1.5 1.25 1 0.75 0.5 0.25 0 0 100 200 300 Thermal shutdown Output voltage (V) 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 25 75 125 175 Output current (mA) Temperature (C) Allowable loss 800 Allowable loss (mW) 700 600 500 400 300 200 100 0 0 25 50 75 100 125 Alone On Board 57x31x0.8mm Temperature (C) |
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