Regulator+Reset IC MM1437 MITSUMI 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 GND --------------------------------------------------------------------------------------- 7 6 1 2 5 3 4 SOP-7 2 RESET 3 Cd 4 VIN 5 VOUT 6 GND 7 N.C ___ 1 2 3 SIP-5 4 5 1 RESET 2 Cd 3 VIN 4 VOUT 5 GND Regulator+Reset IC MM1437 MITSUMI Equivalent Circuit Diagram Pin Description Pin No. 1 (SOP-7) 5 (SIP-5) Pin name GND ------------------------------------------------------------------------------ 2 (SOP-7) RESET Functions GND pin Output pin voltage detection output VOUT pin voltage detection output pin 1 (SIP-5) ------------------------------------------------------------------------------ RESET pin logic âââ RESET 3 (SOP-7) Cd VOUT<Vs L VOUT>Vs H Delay time capacitor pin ------------------------------------------------------------------------------ 2 (SIP-5) 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) VIN Voltage supply input pin VOUT Regulator output pin 6 (SOP-7) GND GND pin 7 (SOP-7) N.C 4 (SIP-5) Equivalent circuit diagram Regulator+Reset IC MM1437 MITSUMI Absolute Maximum Ratings Note: Item Symbol Ratings Unit Operating temperature TOPR -20~+85 °C Storage temperature TSTG -40~+125 °C Supply voltage VCC -0.3~+18 V Output current IOUT 200 mA Power dissipation Pd 650* 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 Symbol Ratings Unit Operating temperature TOP -20~+85 °C Output current IOP 0~150 mA Operating voltage VOP 2~16 V Electrical Characteristics (Except where noted otherwise, Ta=25°C) Item Symbol Measurement conditions Min. Typ. Max. Unit No-load input current 1 Iccq1 VIN=6V IOUT=0mA 400 No-load input current 2 Iccq2 VIN=4V IOUT=0mA 2.5 Output voltage VOUT VIN=6V IOUT=30mA Input-output differential voltage Vi0 800 µA mA Regulator 4.90 5.00 5.10 V VIN=4.8V IOUT=150 mA 0.25 0.50 V Line regulation V1 VIN=6V~10V IOUT=30mA 10 30 mV Load regulation V2 VIN=6V IOUT=0~150mA 40 80 mV Vo temperature coefficient VOUT/ T *1 Ripple rejection RR *1 Output noise voltage *1 Tj=-20~+85°C VIN=6V IOUT=30mA VIN=6V f=120Hz VRIPPLE=1VP-P, IOUT=30mA Vn VIN=6V, f=20~80kHz IOUT=30mA VS VIN=H L 50 100 ppm/°C 60 dB 200 400 µVrms 4.2 4.37 V Reset Detecting voltage Vs temperature coefficient *1 VS/ T Hysteresis voltage VS 4.03 Tj=-20~+85°C VOUT=H L H 100 25 ppm/°C 50 100 mV 100 200 mV 10 15 mS VOL VOUT=3.9V RESET delay time tPLH Cd=0.1µF "L" transmission delay time *1 tPHL Cd=0.1µF 30 90 µS Threshold operating voltage VOPL VOL=0.4V 0.65 0.85 V Low-level output voltage -------------------------------------------------------------------------------- Note 1: design guaranteed 5 Regulator+Reset IC MM1437 MITSUMI 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 (10kâĤ). ------------------------------------------------------------ Regulator+Reset IC MM1437 MITSUMI Timing Chart VIN 10V 5V 0V VOUT 5V VS VS 0V RESET 5V tPLH 0V tPLH Regulator+Reset IC MM1437 MITSUMI Characteristics Quiescent current (IOUT=0mA) 6 5 VOUT 4 3 2 RESET 1 0 0 1 2 3 4 5 6 7 Quiescent current (mA) Output voltage (V) Detection voltage (IOUT=0mA) 3 2.5 2 1.5 1 0.5 0 0 Input Voltage (V) Load regulation (mV) 20 10 0 -10 -20 -30 6 8 10 12 14 16 14 16 20 0 -20 -40 -60 50 100 150 Current limit Output voltage (V) Ripple rejection (dB) 12 40 0 100 90 80 70 60 50 40 30 20 10 0 100 1000 10000 6 5 4 3 2 1 0 0 100000 50 150 200 250 300 Allowable loss Allowable loss (mW) RESET delay time 100 Output current (mA) Frequency (HZ) 100 Deyal time (mS) 10 Output current (mA) Ripple rejection 10 1 0.01 8 60 Input voltage (V) 10 6 Load regulation 30 Line regulation (mV) 4 Input Voltage (V) Line regulation 4 2 0.1 Cd-capacitor (µF) 1 On board 55 22mm (SOP)/45 45mm (SIP) 800 700 600 500 400 300 200 100 0 -25 0 25 50 75 Temperature (°C) 100 125