MM1257 MITSUMI | Alldatasheet
Document overview
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Technical content
Features
- Input current 27V max. 2. Output noise voltage 200µV RMS typ. 3. Maximum output current 100mA max. 4. No-load input current 500µA typ. 5. Thermal shutdown circuit provided 6. Output voltage ranks A : 12V±2% E : 6V±2% D : 8V±2% Package TO-92A (MM1257 T) MMP-4A (MM1257 M) *The output voltage rank appears in the boxes.
Applications
- Handheld computers 2. Portable transceivers 3. Cordless phones MMP-4A 123 TO-92A Pin Assignment 1 NC
2 VIN
3 VOUT
4 GND
1 VOUT
2 GND
3 VIN
MITSUMI High-Precision Three-Pin Regulator MM1257 Absolute Maximum Ratings (Ta=25°C) Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply current VCC max. 27 V Output current IOUT 100 mA Maximum Ratings Pd 200 (MMP-4A), 300 (TO-92A) mW Recommended Operating Conditions Item Symbol Ratings Units Input voltage VIN 7~27 V Output current IO 1~100 mA Pin Description Pin no. Pin name Function 1 N.C N.C
2 VIN Power supply input pin
3 VOUT Regulator output pin
4 GND GND
Equivalent Circuit Diagram
MITSUMI High-Precision Three-Pin Regulator MM1257 Measuring Circuit Electrical Characteristics (VO=5V) Item Symbol Measurement Measurement Min. Typ. Max. Unitscircuit conditions A 11.76 12.0 12.24 B 9.80 10.0 10.20 C 8.82 9.0 9.18 Output voltage VO 1 VIN=Vo+3V, Io=40mA D 7.84 8.0 8.16 V E 5.88 6.0 6.12 F 4.90 5.0 5.10 VIN=7V, Io=40mA G 2.94 3.0 3.06 No-load input current ICCq1 VIN=Vo+4V, Io=40mA 0.50 1.50 mA VIN=14.5V~25V, Io=40mA A 120 250 VIN=12.5V~24V, Io=40mA B 110 250 VIN=11.5V~22V, Io=40mA C 100 250 Input fluctuation rate V1 1 VIN=10.5V~22V, Io=40mA D 90 250 mV VIN=8.5V~20V, Io=40mA E 60 200 VIN=7V~20V, Io=40mA F 50 150 VIN=7V~18V, Io=40mA G 25 150 VIN=15V, Io=1~100mA A 80 160 VIN=13V, Io=1~100mA B 70 140 VIN=12V, Io=1~100mA C 65 130 Load fluctuation rate V2 1 VIN=11V, Io=1~100mA D 60 120 mV VIN=9V, Io=1~100mA E4 0 8 0 VIN=8V, Io=1~100mA F2 0 6 0 VIN=8V, Io=1~100mA G2 0 6 0 Application Circuits