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| MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER GENERAL DESCRIPTION The M62290L/FP is a general purpose DC-DC converter which provides 5.0V fixed output. It is possible to simplify peripheral circuits and to design compact and low cost sets because this IC includes a lot of functions in small 5- or 8-pin packages. Especially this is most suitable for a local voltage regulator of audio sets as a converter from 12V to 5V. PIN CONFIGURATION (TOP VIEW) 5 IN 4 VCC 3 CLM 2 GND 1 COLLECTOR Outline 5P5T FEATURES * Wide operation voltage range ********** 6 to 15 V (typ.Vcc=12V) *Low power dissipation **********1.1mA (max.,Vcc=12V) *Built-in oscillator without peripheral devices (120KHz typ.) *Built-in over current protection circuit *Small 5-pin SIP and 8-pin SOP packages M62290L COLLECTOR 1 GND 2 CLM VCC 3 4 8 NC 7 NC 6 NC 5 IN Outline 8P2S-A APPLICATIONS Local voltage regulator of audio sets and general electric products NC : NO CONNECTION M62290FP BLOCK DIAGRAM VCC OVER CURRENT DETECTION RESISTOR CLM 4 OP Amp 3 CURRENT LIMIT CIRCUIT IN 5 1.25V OSC . (120KHz) PWM Comp 1 Collector 2 GND OUT (1/7) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted) Symbol Vcc Io Pd Parameter Supply voltage Output current Power dissipation Ta = 25C 5-pin SIP 8-pin SOP 5-pin SIP 8-pin SOP Conditions Ratings 16 100 450 440 4.5 4.4 -20 to +85 -40 to +125 Unit V mA mW mW mW/ C mW/ C C C K Topr Tstg Thermal derating Operating temperature Storage temperature Ta > 25C ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=12V, unless otherwise noted) Block All block Error Amp. Oscillator CLM Output Symbol Vcc Icc Vo Vreg-L Iin fosc TDUTY VTHCLM ICL Vsat Parameter Supply voltage Supply current Output voltage REF line regulation IN input current Oscillator frequency Maximum on duty Current limit voltage Output leakage current Output saturation voltage Vcc - CLM Vcc = 15V, Vc = 15V Io = 100mA Without load Vcc= 6 to 15V Test conditions Min. 6.0 Limits Typ. Max. 15 780 5.00 5 160 120 90 140 1100 5.25 30 300 170 170 1 0.3 Unit V A V mV A kHz % mV A V -- 4.75 -- 70 110 -1 -- 0.1 -- (2 /7 ) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 5.2 CIRCUIT CURRENT Icc(A) OUTPUT VOLTAGE Vo(V) CIRCUIT CURRENT vs. SUPPLY VOLTAGE 800 5.1 750 5.0 700 4.9 650 4.8 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) 600 4 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) INPUT CURRENT vs. SUPPLY VOLTAGE OSCILLATOR FREQUENCY fosc(kHz) OSCILLATOR FREQUENCY vs. SUPPLY VOLTAGE 130 120 110 100 90 6 8 10 12 14 16 220 200 180 160 140 120 INPUT CURRENT Iin(A) 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) SUPPLY VOLTAGE Vcc(V) MAX. ON DUTY vs. SUPPLY VOLTAGE CURRENT LIMIT VOLTAGE VTHCLM(mV) CURRENT LIMIT VOLTAGE vs. SUPPLY VOLTAGE 160 100 MAX. ON DUTY TDUTY(%) 95 150 90 140 85 130 80 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) 120 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) (3/7) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER CLM TERM. INPUT CURRENT vs. SUPPLY VOLTAGE CLM TERM. INPUT CURRENT ICLM(A) OUTPUT VOLTAGE vs. TEMPERATURE 5.2 OUTPUT VOLTAGE Vo(V) 12 11 10 9 8 7 6 8 10 12 14 16 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) SUPPLY VOLTAGE Vcc(V) Vcc=6V 5.1 5.0 4.9 4.8 Vcc=16V Vcc=12V SUPPLY CURRENT vs. TEMPERATURE 800 SUPPLY CURRENT Icc(A) INPUT CURRENT Iin(A) INPUT CURRENT vs. TEMPERATURE 250 750 700 650 600 550 500 -40-20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) Vcc=6V Vcc=12V Vcc=16V 200 Vcc=16V Vcc=12V Vcc=6V 150 100 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) OSCILLATOR FREQUENCY vs. TEMPERATURE 160 OSCILLATOR FREQUENCY fosc(kHz) MAX. ON DUTY vs. TEMPERATURE 100 Vcc=16V Vcc=12V Vcc=16V Vcc=12V MAX. ON DUTY TDUTY(%) 140 120 100 95 90 Vcc=6V 85 Vcc=6V 80 60 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) 80 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) (4/7) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER CURRENT LIMIT VOLTAGE vs. TEMPERATURE CLM INPUT CURRENT ICLM(A) 20 CLM INPUT CURRENT vs. TEMPERATURE 200 CURRENT LIMIT VOLTAGE VTHCLM(mV) Vcc=6V 150 Vcc=12V 100 Vcc=16V 15 Vcc=6V Vcc=12V 10 Vcc=16V 5 50 -40 -20 0 20 40 60 80100 120140 TEMPERATURE (C) 0 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(C) OUTPUT SATURATION VOLTAGE vs. TEMPERATURE 200 OUTPUT SATURATION VOLTAGE Vsat(mV) 150 100 50 Test condition: Ic=100mA 0 -40 -20 0 20 40 60 80100120140 TEMPERATURE Ta(C) (5/7) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER Application Circuit (5V Output DC-DC converter) RCLM 0.09 + 100 F VIN (12V) 4 Vcc VOUT(5.0V,1A) 5 IN + 3 CLM 1K M62290 Collector 1 1K 100 F GND 2 150 H Fig.1 Example of application circuit of the M62290L/FP *Current Limit Detection: When the voltage drop between pin 3 and 4 becomes more than 140mV, the Current Limit Detection circuit begins operating. The peak switch current "Ipk" is limited to 140mV / RCLM. In the example of application (fig.1), the current is limited to 1.5A. The Expression of Circuit Constants CONSTANTS TON TOFF (TON+TOFF)MAX TOFF(MIN) TON(MAX) L(MIN) Ipk RCLM 1 fosc EXPRESSIONS VO+VF VIN - VCE(sat) - VO fosc:120KHz(Vcc=12V) ( TON + TOFF ) / ( 1 + TON ) TOFF 1 fosc - TOFF ( VIN - VCE(sat) - VO ) X TON(MAX) Io Io + 1 Io 2 0.14 VCLM:140mV(Vcc=12V) Ipk * VF : Forward voltage drop of an external diode. * Vsat : Output saturation voltage of an external switching transistor. * IO : Set between 1/3 and 1/5 of the maximum output current. * An external transistor, diode and inductor must be have a peak current capability of approximately greater than "Ipk". (6 / 7 ) April 1997 MITSUBISHI M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER Application circuit characteristics OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 100 90 80 70 60 50 0 2 4 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc (V) OUTPUT VOLTAGE vs. LOAD CURRENT OUTPUT VOLTAGE Vout (V) 5.2 5.1 5.0 4.9 4.8 0 200 400 600 800 1000 1200 LOAD CURRENT Iload (mA) LINE REGULATION vs. LOAD CURRENT 80 LINE REGULATION Reg-in (dB) Vcc=6V Vcc=15V Vcc=12V Vcc=8V Vcc=6V Vcc=8V Vcc=12V Vcc=15V EFFICIENCY vs. LOAD CURRENT 6 OUTPUT VOLTAGE Vout (V) 5 4 3 2 1 0 IL=0mA IL=50mA IL=100mA IL=500mA EFFICIENCY ETA(%) 0 200 400 600 800 1000 1200 LOAD CURRENT (mA) LOAD REGULATION vs. SUPPLY VOLTAGE 0.10 LOAD REGULATION Reg_L (V) 0.08 0.06 0.04 0.02 0 6 1mAIL100mA 1mAIL200mA 1mAIL500mA 1mAIL1000mA 8 10 12 14 SUPPLY VOLTAGE Vcc (V) 16 60 40 Test condition: 6VVcc15V 20 0 0 200 400 600 800 1000 1200 LOAD CURRENT Iload(mA) (7 / 7 ) April 1997 |
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