Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Microminiature Low-Noise, Low-Saturation Three-Pin Regulator Monolithic IC MM1320 Outline This IC is a microminiature low-noise stabilized power supply device featuring a highly precise output voltage and a small input/output voltage difference of only 0.15V at an output current of 60mA. The IC delivers output currents of up to 200mA, and through use of a noise pin output noise is diminished even further. An on/off pin can be used to turn the output on and off. Features 1. 2. 3. 4. 5. 6. Input/output voltage difference Output noise voltage Maximum output current No-load input current With internal overcurrent protection and thermal shutdown circuits Output voltage ranks 7. Output on/off control function 0.15V typ. (IO=60mA) 30µVRMS typ. (Cn=0.01µF) 150mA max. 170µA typ. 2~3.3V (0.1 V steps) 3.5V, 4V, 4.5V, 5V High : ON, Low : OFF Package SOT-25A (MM1320 N) The output voltage rank appears in the boxes. * Applications 1. 2. 3. 4. Cordless phones Portable phones, PHS Portable minidiscs Other portable equipment which uses batteries Pin Assignment 5 1 4 2 SOT-25A 3 1 CONT 2 GND 3 NOISE 4 VOUT 5 VIN Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Equivalent Circuit Diagram (MM1320) Absolute Maximum Ratings Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply current VCC -0.3~+12 V Output current IOUT 200 mA Power consumption Pd 150 mW Recommended Operating Conditions Item Symbol Ratings Units Operating temperature TOPS -20~+75 °C Output current IOPS 150 mA Operating voltage VOP 1.8~10 V Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Electrical Characteristics (Except where noted otherwise, Ta=25°C) Item Symbol Measurement conditions Min. Typ. Max. Units Output voltage Vo VIN=VOUT+1V, Io=30mA VOUT-2% VOUT VOUT+2% V No-load consumption current Iccq1 VIN=VOUT+1V, Io=0mA 170 340 µA Input current while off Iccq2 VIN=VOUT+1V, Vcont=0V 1 µA I/O voltage difference Vd min. VIN=VOUT-0.2V, Io=60mA 0.15 0.25 V Input fluctuations V1 VIN=VOUT+1V~5V, Io=30mA 10 20 mV Load fluctuation V2 Io=0~100mA, VIN=VOUT+1V 30 60 mV Output voltage temperature coefficient Vo/ T Tj=-20~+75°C, Io=30mA 100 ppm/°C 60 dB VIN=VOUT+1V VIN=VOUT+1V, f=120Hz Ripple rejection rate 50 RR VRIPPLE=1V, Io=30mA Output noise voltage VIN=VOUT+1V, f=20~80kHz 30 Io=30mA, Cnoise=0.01uF (3V item) Vn µVrms CONT pin current while off IOFF Vcont=0.4V 1 3 µA CONT pin current while on ION Vcont=1.6V 5 10 µA CONT pin high level H 1.6 VIN+0.3 V CONT pin low level L -0.3 0.4 V Measuring Circuit Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Output voltage rank Rnak A B C D E F G H J Characteristics Voltage 5.0V 4.5V 4.0V 3.5V 3.3V 3.2V 3.1V 3.0V 2.9V Rnak K L M N P R S T U (MM1320) I/O voltage difference Allowable loss VIN=2.8V 0.4 0.3 0.2 Board:60 40 1.6tmm 500 Allowable loss (mW) 0.5 I/O voltage difference (mA) Voltage 2.8V 2.7V 2.6V 2.5V 2.4V 2.3V 2.2V 2.1V 2.0V 0.1 400 with board mounted 300 200 Unit 100 0 -25 0 0 20 40 60 80 0 25 50 75 100 Ambient temperature (°C) 125 100 Output voltage (mA) Output voltage temperature characteristic No-load consumption current IOUT=0mA Consuption current (mA) VIN=4V, IOUT=30mA Output voltage (V) 3.2 3.1 3.0 2.9 2.0 1.5 1.0 0.5 0 0 2.8 -25 2 4 6 8 Input voltage (V) 0 25 75 100 Ambient temperature (°C) 125 10 12 Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Output voltage Input fluctuction IOUT=30mA IOUT=30mA 4 20 Output voltage (mV) Output voltage (V) 5 3 2 1 10 0 -10 0 0 2 4 6 8 10 12 Input voltage (mA) 4 6 8 10 12 Input voltage (V) Load fluctuation Current limit VIN=4V 20 4 0 -20 -40 3 2 1 0 20 40 60 80 0 100 Output current (mA) 0 50 100 150 200 250 Output current (mA) Ripple rejection rate Input transient response IOUT=60mA Input voltage (V) VIN=4V, IOUT=30mA 80 60 7V 6V Input voltage (V) Ripple rejection rate (dB) VIN=4V 5 Output voltage (V) Output voltage (mV) 40 40 20 20mV 0 10 100 1k 10k 100k Frequency (Hz) 1M 50µS Microminiature Low-Noise, Low-Saturation Three-Pin Regulator MM1320 MITSUMI Input transient response Output noise voltage (µVrms) VIN=4V, IOUT=30mA 100 75 50 25 Output voltage (V) Output current (mA) Output noise voltage VIN=4V 100mA 50mA 20mV 0 0.0001 0.001 0.01 Noise pin capacitance (µF) 0.1 20µS