MM1437

MITSUMI MITSUMI Regulator+Reset IC MM1437 Regulator+Reset IC Monolithic IC MM1437 Outline This IC combines a low saturation 5V regulator, adapted for low power consumption, and a reset function (regulator output monitoring), for which there is significant market need, that uses the built-in 4.2V detection delay circuit. Features 1. Small input/output voltage difference 0.25V typ. 2. High input voltage 18V max. 3. Internal thermal shutdown circuit. 4. Internal current-limiting circuit. 5. Adjustment-free reset detection voltage 4.2V typ. 6. Easy to set delay time from voltage detection to reset release. Package SOP-7 SIP-5 Applications TV, monitors, air conditioners, others. Pin Assignment 1 7 6 5 2 3 4 1 2 3 4 5 6 SOP-7 7 GND --------------------------------------------------------------------------------------- RESET Cd VIN VOUT GND N.C ___ 1 2 1 2 3 SIP-5 4 5 3 4 5 RESET Cd VIN VOUT GND MITSUMI Regulator+Reset IC MM1437 Equivalent Circuit Diagram Pin Description Pin No. 1 (SOP-7) 5 (SIP-5) Pin name GND ------------------------------------------------------------------------------ Functions GND pin Output pin voltage detection output VOUT pin voltage detection output pin RESET pin logic – – – ------------------------------------------------------------------------------ Equivalent circuit diagram 2 (SOP-7) RESET 1 (SIP-5) RESET VOUTVs L H 3 (SOP-7) 2 (SIP-5) Cd Delay time capacitor pin ------------------------------------------------------------------------------ RESET pin output delay time can be set by the capacitance connected to the Cd pin. tPLH= 100000 · C tPLH: transmission delay time [S] C: capacitor value [F] 4 (SOP-7) 3 (SIP-5) 5 (SOP-7) 4 (SIP-5) 6 (SOP-7) 7 (SOP-7) VIN VOUT GND N.C Voltage supply input pin Regulator output pin GND pin MITSUMI MITSUMI Regulator+Reset IC MM1437 Absolute Maximum Ratings Item Operating temperature Storage temperature Supply voltage Output current Power dissipation Note: Symbol TOPR TSTG VCC IOUT Pd Ratings -20~+85 -40~+125 -0.3~+18 200 650* Unit °C °C V mA mW * When mounted on a 55 20 mm paper phenol board (SOP-7) When mounted on a 45 45 mm paper phenol board (SIP-5) Recommended Operating Conditions Item Operating temperature Output current Operating voltage Symbol TOP IOP VOP Ratings -20~+85 0~150 2~16 Unit °C mA V Electrical Characteristics Item No-load input current 1 No-load input current 2 Regulator Output voltage Input-output differential voltage Line regulation Load regulation Vo temperature coefficient (Except where noted otherwise, Ta=25°C) Measurement conditions VIN=6V IOUT=0mA VIN=4V IOUT=0mA VIN=6V IOUT=30mA VIN=4.8V IOUT=150 mA VIN=6V~10V IOUT=30mA VIN=6V IOUT=0~150mA Tj=-20~+85°C VIN=6V IOUT=30mA VIN=6V f=120Hz VRIPPLE=1VP-P, IOUT=30mA VIN=6V, f=20~80kHz IOUT=30mA VIN=H L Tj=-20~+85°C VOUT=H L H 25 5 VOUT=3.9V Cd=0.1µF Cd=0.1µF VOL=0.4V 4.03 50 4.90 Min. Typ. Max. Unit 400 2.5 5.00 0.25 10 40 100 60 200 4.2 100 50 100 10 30 0.65 100 200 15 90 0.85 400 4.37 5.10 0.50 30 80 800 µA mA V V mV mV ppm/°C dB µVrms V ppm/°C mV mV mS µS V Symbol Iccq1 Iccq2 VOUT Vi0 V1 V2 VOUT/ T RR *1 *1 *1 Ripple rejection Output noise voltage Reset Detecting voltage Vn VS VS/ T VS VOL tPLH tPHL VOPL Vs temperature coefficient *1 Hysteresis voltage Low-level output voltage RESET delay time "L" transmission delay time *1 Threshold operating voltage Note 1: design guaranteed ------------------------------------------------------------------------------- MITSUMI MITSUMI Regulator+Reset IC MM1437 Measuring Circuit Application Circuit Note 1 : This regulator is not internally compensated and thus requires an external output-capacitor (COUT) for stability. Note 2 : RESET-terminal with a built-in pull-up resistance (10kΩ). ----------------------------------------------------------- MITSUMI MITSUMI Regulator+Reset IC MM1437 Timing Chart VIN 10V 5V 0V VOUT 5V VS VS 0V RESET 5V tPLH 0V tPLH MITSUMI MITSUMI Regulator+Reset IC MM1437 Characteristics Detection voltage (IOUT=0mA) Output voltage (V) 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 RESET VOUT Quiescent current (IOUT=0mA) Quiescent current (mA) 3 2.5 2 1.5 1 0.5 0 0 2 4 6 8 10 12 14 16 Input Voltage (V) Input Voltage (V) Line regulation Line regulation (mV) 30 20 10 0 -10 -20 -30 4 6 8 10 12 14 16 Load regulation Load regulation (mV) 60 40 20 0 -20 -40 -60 0 50 100 150 Input voltage (V) Output current (mA) Ripple rejection 100 90 80 70 60 50 40 30 20 10 0 10 100 1000 10000 100000 Current limit Output voltage (V) 6 5 4 3 2 1 0 0 50 100 150 200 250 300 Ripple rejection (dB) Frequency (HZ) Output current (mA) RESET delay time 100 Allowable loss 800 700 600 500 400 300 200 100 0 -25 0 On board 55 22mm (SOP)/45 45mm (SIP) 10 1 0.01 0.1 1 Allowable loss (mW) Deyal time (mS) 25 50 75 100 125 Cd-capacitor (µF) Temperature (°C)