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. 15µA typ. 1.08V, 1.03V typ. CE pin Output LOW OFF HIGH ON Package SOT-25A (MM1270CN, MM1270ZN) Applications 1. Pagers 2. Headphone stereos 3. Portable equipment Pin Assignment 5 1 4 2 SOT-25A 3 1 VOUT 2 GND 3 GND 4 CE 5 VIN MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Equivalent Circuit Diagram Absolute Maximum Ratings Item Symbol Rating Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply voltage VCC max. -0.3~+10 V CE pin voltage VCE max. -0.3~+10 V Output current Io max. 60 mA Allowable loss Pd 150 mW Recommended Operating Conditions Input voltage VIN 1.2~2.0 V Output voltage Io 0~10.0 mA MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 Electrical Characteristics (Ta=25°C) Item Symbol Measurement conditions Z rank Output voltage C rank Vo VIN=1.5V Io=1mA Min. Typ. Max. Units 1.05 1.08 1.11 1.00 1.03 1.06 V 1.200 1.235 1.270 D rank No load input current Iccq1 VIN=1.5V Io=0mA 15 35 µA Minimum I/O voltage differential Vd min. VIN=1.0V Io=5mA 0.05 0.10 V VIN=1.2V~1.25V Io=5mA 3 30 VIN=1.25V~1.6V Io=5mA 10 20 20 Input fluctuation ratio V1 Load fluctuation ratio V2 VIN=1.5V Io=0~5mA 5 Output voltage temperature coefficient Vo/T Tj=-20~+75°C +800 ppm/°C 30 dB 150 µVrms VIN=1.5V f=120Hz Ripple rejection rate RR Output noise voltage VN Input current for OFF Iccq2 VIN=1.5V, VCE=0.2V CE pin current for OFF IOFF VCE=0.2V CE pin current for ON ION VCE=1.5V CE pin HIGH level H CE pin LOW level L Current limit I max. VRIPPLE=0.1Vpp Io=5mA VIN=Vo+1V Io=100mA f=10~80kHz 1 -1 VIN=1.5V Ro=0Ω µA 0.8 10 V -0.3 0.2 V 60 mA 20 40 H VO 0 Tr T *Formula for output riseVotime. (V) Tr (µS) =COUT (µF) * 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. µA 5 V L mV µA Equivalent Circuit Diagram CE mV I max.(A) MITSUMI Low-Output Voltage Low-Saturation Three-Pin Regulator MM1270 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 (µA) Output voltage (V) Output voltage characteristic (IOUT=0mA) 100 80 60 40 20 0 0 1 2 Input voltage (V) 0.2 0.15 0.1 0.05 4 5 1.09 1.08 1.07 1.06 1.05 1.04 0 2 4 6 8 0 10 10 0 -10 -20 -30 2 4 6 8 10 3 Output VS temperature 1.2 1.15 1.1 1.05 25 50 Temperature (°C) 50 40 30 20 10 0 10 100 1000 10000 Frequency (Hz) Output current (mA) 0 Ripple rejection rate (dB) 20 1 -25 2 Ripple rejection rate (VIN=1.2V) 30 0 1 Input voltage (V) Load fluctuation Load fluctuation (mV) 5 1.1 0.25 Output current (mA) Output voltage (V) 4 Input fluctuation Output voltage (V) I/O voltage difference (V) I/O voltage difference (VIN=1.0V) 0 3 Input voltage (V) 75 100000