MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER GENERAL DESCRIPTION PIN CONFIGURATION (TOP VIEW) 5 IN 4 VCC M62290L 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. 3 CLM 2 GND 1 COLLECTOR Outline 5P5T FEATURES GND 2 CLM 3 VCC 4 M62290FP COLLECTOR 1 • 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 8 NC 7 NC 6 NC 5 IN Outline 8P2S-A NC : NO CONNECTION APPLICATIONS Local voltage regulator of audio sets and general electric products BLOCK DIAGRAM OVER CURRENT DETECTION RESISTOR VCC CLM 4 3 CURRENT LIMIT CIRCUIT OP Amp PWM Comp IN 5 1 Collector 1.25V OSC . (120KHz) 2 GND OUT ( 1/7 ) April 1997 MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted) Symbol Parameter Conditions Ratings Unit Vcc Supply voltage 16 V Io Output current 100 mA 450 mW Power dissipation Ta = 25°C 5-pin SIP Pd 8-pin SOP 440 mW K Ta > 25°C 5-pin SIP 4.5 Thermal derating mW/ °C 8-pin SOP 4.4 mW/ °C Topr Operating temperature -20 to +85 °C Tstg Storage temperature -40 to +125 °C ELECTRICAL CHARACTERISTICS (Ta=25°C, Vcc=12V, unless otherwise noted) Block Symbol All block Vcc Supply voltage Icc Vo Supply current Output voltage Without load REF line regulation IN input current Vcc= 6 to 15V Error Amp. Vreg-L Iin Oscillator CLM Output fosc TDUTY VTHCLM ICL Vsat Parameter Test conditions Min. Limits Typ. Max. 6.0 Oscillator frequency — 15 V 4.75 780 5.00 1100 5.25 µA V 30 300 mV — 5 160 70 120 170 µA kHz 170 % mV 1 0.3 µA V Maximum on duty Current limit voltage Vcc - CLM 110 90 140 Output leakage current Output saturation voltage Vcc = 15V, Vc = 15V Io = 100mA -1 — — 0.1 (2 /7 ) Unit April 1997 MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs. SUPPLY VOLTAGE CIRCUIT CURRENT vs. SUPPLY VOLTAGE 800 CIRCUIT CURRENT Icc(µA) OUTPUT VOLTAGE Vo(V) 5.2 5.1 5.0 4.9 4.8 750 700 650 600 6 8 10 12 14 16 4 6 SUPPLY VOLTAGE Vcc(V) OSCILLATOR FREQUENCY fosc(kHz) INPUT CURRENT Iin(µA) 200 180 160 140 8 10 12 14 16 120 110 100 90 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) SUPPLY VOLTAGE Vcc(V) MAX. ON DUTY vs. SUPPLY VOLTAGE CURRENT LIMIT VOLTAGE vs. SUPPLY VOLTAGE CURRENT LIMIT VOLTAGE VTHCLM(mV) MAX. ON DUTY TDUTY(%) 14 130 16 100 95 90 85 80 6 12 OSCILLATOR FREQUENCY vs. SUPPLY VOLTAGE 220 6 10 SUPPLY VOLTAGE Vcc(V) INPUT CURRENT vs. SUPPLY VOLTAGE 120 8 8 10 12 14 16 160 150 140 130 120 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc(V) SUPPLY VOLTAGE Vcc(V) (3 /7 ) April 1997 MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER OUTPUT VOLTAGE vs. TEMPERATURE 12 5.2 11 OUTPUT VOLTAGE Vo(V) CLM TERM. INPUT CURRENT ICLM(µA) CLM TERM. INPUT CURRENT vs. SUPPLY VOLTAGE 10 9 8 Vcc=6V 5.1 Vcc=12V 5.0 4.9 Vcc=16V 4.8 7 6 8 10 12 14 -40 -20 0 20 40 60 80 100120140 16 SUPPLY VOLTAGE Vcc(V) TEMPERATURE Ta(°C) SUPPLY CURRENT vs. TEMPERATURE INPUT CURRENT vs. TEMPERATURE 250 750 INPUT CURRENT Iin(µA) SUPPLY CURRENT Icc(µA) 800 700 650 600 Vcc=16V Vcc=12V Vcc=6V 550 Vcc=6V Vcc=12V Vcc=16V 200 150 100 500 -40-20 0 20 40 60 80 100120140 TEMPERATURE Ta(°C) -40 -20 0 20 40 60 80 100120140 OSCILLATOR FREQUENCY vs. TEMPERATURE MAX. ON DUTY vs. TEMPERATURE TEMPERATURE Ta(°C) 140 100 MAX. ON DUTY TDUTY(%) OSCILLATOR FREQUENCY fosc(kHz) 160 Vcc=16V Vcc=12V 120 100 Vcc=6V 80 60 95 Vcc=16V Vcc=12V 90 Vcc=6V 85 80 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(°C) -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(°C) (4 /7 ) April 1997 MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER CURRENT LIMIT VOLTAGE vs. TEMPERATURE 20 CLM INPUT CURRENT ICLM(µA) CURRENT LIMIT VOLTAGE VTHCLM(mV) 200 Vcc=6V 150 Vcc=12V 100 Vcc=16V 50 CLM INPUT CURRENT vs. TEMPERATURE 15 Vcc=6V Vcc=12V 10 5 Vcc=16V 0 -40 -20 0 20 40 60 80100 120140 -40 -20 0 20 40 60 80 100120140 TEMPERATURE Ta(°C) TEMPERATURE (°C) OUTPUT SATURATION VOLTAGE Vsat(mV) OUTPUT SATURATION VOLTAGE vs. TEMPERATURE 200 150 100 50 Test condition: Ic=100mA 0 -40 -20 0 20 40 60 80100120140 TEMPERATURE Ta(°C) (5 /7 ) April 1997 MITSUBISHI <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER Application Circuit (5V Output DC-DC converter) RCLM 0.09Ω VIN (12V) + 100µ F 4 Vcc 3 CLM VOUT(5.0V,1A) 5 IN 1KΩ M62290 Collector 1 + 1KΩ GND 100µ F 2 150µ 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 EXPRESSIONS VO+VF VIN - VCE(sat) - VO 1 fosc 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 <Dig./Ana. INTERFACE> M62290L/FP 5.0V FIXED OUTPUT VOLTAGE DC-DC CONVERTER Application circuit characteristics OUTPUT VOLTAGE vs. SUPPLY VOLTAGE EFFICIENCY vs. LOAD CURRENT 100 5 EFFICIENCY ETA(%) OUTPUT VOLTAGE Vout (V) 6 4 IL=0mA 3 IL=50mA IL=100mA IL=500mA 2 1 0 80 Vcc=6V Vcc=8V Vcc=12V Vcc=15V 70 60 50 0 2 4 6 8 10 12 14 16 SUPPLY VOLTAGE Vcc (V) 0 OUTPUT VOLTAGE vs. LOAD CURRENT 5.2 Vcc=15V Vcc=12V Vcc=8V 5.1 5.0 Vcc=6V 4.9 4.8 0 200 400 600 800 1000 1200 LOAD CURRENT (mA) LOAD REGULATION vs. SUPPLY VOLTAGE 0.10 LOAD REGULATION Reg_L (V) OUTPUT VOLTAGE Vout (V) 90 200 400 600 800 1000 1200 LOAD CURRENT Iload (mA) 0.08 1mA≤IL≤100mA 1mA≤IL≤200mA 1mA≤IL≤500mA 1mA≤IL≤1000mA 0.06 0.04 0.02 0 6 8 10 12 14 SUPPLY VOLTAGE Vcc (V) 16 LINE REGULATION vs. LOAD CURRENT LINE REGULATION Reg-in (dB) 80 60 40 Test condition: 6V≤Vcc≤15V 20 0 0 200 400 600 800 1000 1200 LOAD CURRENT Iload(mA) (7 / 7 ) April 1997