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 5 1 4 2 SOT-25 3 1 CONT 2 GND 3 N.C 4 VOUT 5 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 Output L OFF H ON Connect cont-terminal with VIN, when it is not used. 2 GND 3 N.C 4 VOUT 5 VIN GND pin 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. Equivalent circuit diagram MITSUMI Driver IC for Vibrators MM1426 Absolute Maximum Ratings Item Symbol Ratings Unit Operating temperature TOPR -20~+75 °C Storage temperature TSTG -40~+125 °C Supply voltage VCC -0.3~+12 V Output current IOUT 200 mA Power dissipation Pd 150 (Alone) mW Recommended Operating Conditions Item Symbol Ratings Unit Operating temperature TOPR -20~75 °C Output current IOP 0~150 mA Operating voltage VOP 1.8~12 V Electrical Characteristics (Except where noted otherwise, Ta=25°C) Item Symbol Measurement conditions Output voltage Vo VIN=3.5V Io=30mA No-Load input current Iccq1 Input current 1 (OFF) Input current 2 (OFF) Min. Typ. Max. Unit -3% VO +3% V VIN=3.5V Io=0mA 120 240 µA Iccq2 VIN=1.8V VCONT=1.6V 80 160 µA Iccq3 VIN=3.5V VCONT=0V 0.1 µA Line regulation V1 VIN=3V~5V Io=30mA 10 20 mV Load regulation V2 VIN=3.5V Io=0~100mA 30 60 mV Vo temperature coefficient Vo/ T Ripple rejection RR VIN low detector voltage V SL VIN low detector voltage temperature coefficient VSL/ T VIN high detector voltage VSH High threshold voltage Vonh Cont terminal current ION High threshold voltage H Low threshold voltage L Tj=-20~+75°C VIN=3.5V 100 ppm/°C 55 70 dB 2.0 2.1 Io=30mA VIN=3.5V f=120Hz VRIPPLE=1VP-P, Io=30mA VIN=H L Io=30mA Tj=-20~+75°C VIN=H VIN=L VIN=H L Io=30mA 200 H Io=30mA L, L 2.2 2.6 H ppm/°C 2.8 500 VCONT=1.6V 5 V V mV 10 µA 1.6 VIN+0.3 V -0.3 0.4 V 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 VOUT 1.3V 0V MITSUMI Driver IC for Vibrators MM1426 Characteristics Line regulation 60 Line regulation (mV) Load regulation (mV) Load regulation 40 20 0 -20 -40 10 5 0 -5 -10 -60 0 20 40 60 80 4 100 120 140 6 8 1.5 1.25 1 0.75 0.5 0.25 0 0 100 200 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 300 25 Output current (mA) 800 700 Alone 600 500 On Board 57x31x0.8mm 400 300 200 100 0 25 50 75 Temperature (°C) 100 75 125 Temperature (°C) Allowable loss Allowable loss (mW) 12 Thermal shutdown Output voltage (V) Output voltage (V) Current limit 0 10 VIN (V) Output current (mA) 125 175