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| MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Low-Output Voltage Low-Saturation Three-Pin Regulator Monolithic IC MM1270 Outline MM1270 is targeted at the one-battery output voltage market, and is a compact low input/output voltage differential stable power supply with ultra-low current consumption. Features 1. Input voltage 2. Input/output voltage differential 3. Input current for no load 4. Output voltage 5. Current limiter circuit included 6. On/Off logic 10V max. 0.05V typ. 15A typ. 1.08V, 1.03V typ. CE pin LOW HIGH Output OFF ON Package SOT-25A (MM1270CN, MM1270ZN) Applications 1. Pagers 2. Headphone stereos 3. Portable equipment Pin Assignment 1 5 4 2 3 1 2 3 4 5 SOT-25A VOUT GND GND CE VIN MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Equivalent Circuit Diagram Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage CE pin voltage Output current Allowable loss Symbol TSTG TOPR VCC max. VCE max. Io max. Pd Rating -40~+125 -20~+75 -0.3~+10 -0.3~+10 60 150 Units C C V V mA mW Recommended Operating Conditions Input voltage Output voltage VIN Io 1.2~2.0 0~10.0 V mA MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Electrical Characteristics Item (Ta=25C) Symbol Z rank Vo Iccq1 Vd min. V1 V2 Vo/T RR VN Iccq2 IOFF ION H L I max. VIN=1.5V Ro=0 Measurement conditions VIN=1.5V Io=1mA VIN=1.5V Io=0mA VIN=1.0V Io=5mA VIN=1.2V~1.25V Io=5mA VIN=1.25V~1.6V Io=5mA VIN=1.5V Io=0~5mA Tj=-20~+75C VIN=1.5V f=120Hz VRIPPLE=0.1Vpp Io=5mA VIN=Vo+1V Io=100mA f=10~80kHz VIN=1.5V, VCE=0.2V VCE=0.2V VCE=1.5V 0.8 -0.3 20 40 -1 5 10 0.2 60 Min. Typ. Max. Units 1.05 1.00 1.08 1.03 15 0.05 3 10 5 +800 30 150 1 1.11 1.06 35 0.10 30 20 20 V A V mV mV ppm/C dB Vrms A A A V V mA Output voltage C rank D rank 1.200 1.235 1.270 No load input current Minimum I/O voltage differential Input fluctuation ratio Load fluctuation ratio Output voltage temperature coefficient Ripple rejection rate Output noise voltage Input current for OFF CE pin current for OFF CE pin current for ON CE pin HIGH level CE pin LOW level Current limit Equivalent Circuit Diagram V H CE L VO 0 Tr T *Formula for output rise time. Vo (V) Tr (S) =COUT (F) I max.(A) * Note 1 : Locate the input/output capacitor as close as possible to the IC. * Note 2 : When not using output control, short the CE pin to the Vin pin. MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Output voltage characteristic (IOUT=0mA) 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 1 2 3 4 5 No-load input current No-load input current (A) 100 80 60 40 20 0 0 1 2 3 4 5 Output voltage (V) Input voltage (V) Input voltage (V) I/O voltage difference (VIN=1.0V) I/O voltage difference (V) 0.25 0.2 0.15 0.1 0.05 0 0 2 4 6 8 10 Input fluctuation 1.1 Output voltage (V) 1.09 1.08 1.07 1.06 1.05 1.04 0 1 2 3 4 5 Output current (mA) Input voltage (V) Load fluctuation Load fluctuation (mV) 30 20 10 0 -10 -20 -30 0 2 4 6 8 10 Ripple rejection rate (VIN=1.2V) Ripple rejection rate (dB) 50 40 30 20 10 0 10 100 1000 10000 100000 Output current (mA) Frequency (Hz) Output VS temperature Output voltage (V) 1.2 1.15 1.1 1.05 1 -25 0 25 50 75 Temperature (C) |
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