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M62212FP Dataheets PDF



Part Number M62212FP
Manufacturers Mitsubishi
Logo Mitsubishi
Description GENERAL PURPOSE DC-DC CONVERTER
Datasheet M62212FP DatasheetM62212FP Datasheet (PDF)

MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER DESCRIPTION M62212 is designed as a general purpose DC-DC converter. This small 8 pin package contains many functions allowing simpler peripheral circuits and compact set design. The output transistor is open collector and emitter follower type. This makes the control STEP-UP,STEP-DOWN and INVERTING converter. PIN CONFIGURATION(TOP VIEW) Collector output 1 Emitter 2 output GND 3 4 8 7 6 5 VCC IN FB.

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MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER DESCRIPTION M62212 is designed as a general purpose DC-DC converter. This small 8 pin package contains many functions allowing simpler peripheral circuits and compact set design. The output transistor is open collector and emitter follower type. This makes the control STEP-UP,STEP-DOWN and INVERTING converter. PIN CONFIGURATION(TOP VIEW) Collector output 1 Emitter 2 output GND 3 4 8 7 6 5 VCC IN FB DTC M62212P / FP / GP FEATURE • Wide operation power supply voltage range •••••••2.5 ~ 18V • Low power consumption••••••••••••••••••••••••1.3mA typ • High speed switching is possible.(300kHz) • Output short protection circuit and ON/OFF control are used. The dead-time control and the soft-start operation are possible • Package variation : 8pin DIP/SOP/SSOP8 Cosc OUTLINE 8P2S-A (FP) 8P2X (GP) 8P4 (P) APPLICATIONS General electric products, DC-DC converter BLOCK DIAGRAM VCC 8 UVLO VTH : 2.3V Collector output COSC 4 OSC VCC PWM Comp 1 2 Emitter output OP Amp IN 7 1.25V VCC 1.86V Short protection circuit 1.25V R S Q 1.15V 0.3V 6 FB 5 DTC 3 GND (1/8) MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted) Symbols Vcc Vo Io Pd Ktheta Topr Tstg Items Power supply voltage Output voltage Output current Power dissipation Thermal derating ratio Operating ambient temperature Storage temperature Conditions Ratings 19 19 150 Units V V mA mW °C °C Ta=25°C Ta>25°C 625 (P) 360(FP) 250(GP) -20°C ~ +85 -40°C ~ +125 5.00 (P) 2.88 (FP) 2.00(GP) mW/°C Electrical Characteristics ( Ta=25°C, Vcc =12V, Cosc=100pF unless otherwise noted ) Block All device Std. voltage section Symbol VCC I CC ST V REF L INE IB AV Items Range of power supply voltage Standby current Standard voltage Line regulation Input bias current Open loop gain Unity gain bandwidth Test condition Limits Min 2.5 Typ 1.3 1.19 1.25 5 80 0.6 1.82 6 -60 110 1.0 0.45 -40 10 -30 2.62 400 Max 18 1.8 1.31 12 500 Units V mA V mV nA dB MHz V mV mA uA kHz V V uA uA Output "OFF" status Voltage follower VCC=2.5 ~ 18V Error amp. section GB VOM VOM I OM I OM + + - Output high voltage Output low voltage Output sink current Output source current Oscillation frequency Upper limit voltage of oscillation waveform Lower limit voltage of oscillation waveform VFB=1.86V VIN =1V f OSC Oscillator section VOSCH VOSCL I OSC CH I OSC DIS1 VTH ON Cosc charge current Cosc discharge current 1 Start-up threshold voltage Shut-down threshold voltage Hysteresis VIN =1V VIN =1V VHYS = VTHON - VTHOFF 20 2.2 2.3 2.25 50 2.4 V V UVLO section VTH OFF VHYS 80 mV (2/8) MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER Electrical Characteristics ( Ta=25°C, Vcc =12V, Cosc=100pF unless otherwise noted ) Block Symbol VTH FB VTH DTC Items FB threshold voltage Latch mode "H" threshold voltage Latch mode "L" threshold voltage DTC charge current when start-up DTC discharge current 1 Test condition VIN =1V,VDTC=0.7V VIN =1V,VFB =2.11V VIN =1V,VFB =2.11V VDTC=0.7V,VFB =2.11V VDTC=0.7V,VFB =2.11V Limits Min Typ 1.86 1.15 0.3 -45 50 -10 15 -1 0.3 1.6 1 1.1 Max Units V V V µA µA µA µA µA V V Short protection circuit VTL DTC I CH1 I DIS1 I CH2 I DIS2 I CL DTC charge current when stable state VDTC=0.7V,VFB = 0.7V DTC discharge current 2 VDTC=0.2V,VFB =2.11V Output section Collector output leak current Collector output saturation voltage 1 Collector output saturation voltage 2 VCE=18V , VCC=18V Emitter GND, IC=150mA,VE=0V Emitter follower, IE=50mA,VC=12V VSAT1 VSAT2 (3/8) MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER 1. Application Circuit (STEP-DOWN converter with current buffer transistor) L VIN CIN 8 1 VOUT D R1 R2 4 COUT COSC 7 6 M62212 2 5 3 (4/8) MITSUBISHI SEMICONDUCTORS M62212P/FP/GP GENERAL PURPOSE DC-DC CONVERTER 2. FUNCTION DESCRIPION 1) Soft Start (The peripheral circuit is shown in Fig.1) When the power is turned ON, input terminal IN is at 0V level. Therefore, the FB terminal is fixed to High level. The DTC terminal goes up gradually starting from 0V due to the internal charge current and the external CDTC. When the level of DTC terminal reaches the lower limit of the triangular wave of the oscillator, PWM comparator and the output circuit go into operation causing the output voltage, "Vo" of the DC-DC converter to rise. The charge current is designed to be approximately 45µA. FB DTC 1.0V OSC 0.45V OFF External Tr collector ON Fig.2 2) DTC The dead time control is set by installing a resistor between the DTC terminal and GND. However, the DTC terminal serves as the short protection circuit also. Therefore, its set up depends on whether the short protection circuit is used and not. (When the short protection circuit is used.


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