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NJM2367

New Japan Radio
Part Number NJM2367
Manufacturer New Japan Radio
Description 5.5A HIGH POWER DC/DC CONVERTER CONTROLLER IC
Published May 7, 2005
Detailed Description NJM2367 5.5A HIGH POWER DC/DC CONVERTER CONTROLLER IC sGENERAL DESCRIPTION The NJM2367 is a high power DC/DC converter c...
Datasheet PDF File NJM2367 PDF File

NJM2367
NJM2367

Overview
NJM2367 5.
5A HIGH POWER DC/DC CONVERTER CONTROLLER IC sGENERAL DESCRIPTION The NJM2367 is a high power DC/DC converter controller inducing basic function of DC/DC converter controller, which consists precision reference voltage, fixed frequency oscillator, high gain error amplifier, precision output switch, cycle-by-cycle current limit, under voltage lockout, and thermal shutdown circuit.
The NJM2367 is suitable for step-down converter with few external parts, and realize low power stand-by mode.
sFEATURES qOperating Voltage (7.
5V to 40V) qPWM form Switching Power Supply Control qInternal High Power Transistor 5.
5A (min.
) qFixed Frequency Oscillator 72kHz (typ.
) qInternal Current Sense Amplifier qInternal Under Voltage Lockout qInternal Thermal Shutdown Circuit qBipolar Technology qPackage Outline TO-22O(5PIN) sPACKAGE OUTLINE 12345 NJM2367TA2050 NJM2367TLA2050 PIN FUNCTION 1:VFB 2:SW OUT 3:GND 4:V+ 5:STBY (VCOMP) sBLOCK DIAGRAM 5.
5A Power Transistor Current Sense Amplifier Current Circh Transistor 4 2 Thermal Shutdown Reference Voltage ON/OFF VREF Oscillator S R Ratch Circuit Q Under Voltage Lockout Standby Circuit PWM Comparator VREF 1 Error Amplifier 5 3 Ver 2.
1 - 1 - NJM2367 sABSOLUTE MAXIMUM RATINGS (Ta=25°C ) PARAMETER SYMBOL Maximum Supply Voltage V+ Switch Output Voltage Vo (SWITCH) Voltage Feedback and VFB,VCOMP Compensation Input Voltage Range Power Dissipation PD Operating Junction Temperature Operating Temperature Range Storage Temperature Range Tj Topr Tstg RATINGS 40 -0.
5 ∼ +Vin -0.
3 ∼ +7.
0 TO-220 (5PIN) 16(TC 46°C) -40 ∼ +150 -40 ∼ +85 -50 ∼ +150 UNIT V V V W °C °C °C sTHERMAL CHARACTERISTICS Junction-to-Ambient Temperature Thermal Resistance Junction-to-Case θja θjc 70 6.
5 °C/W sPOWER DISSIPATION vs.
AMBIENT TEMPERATURE (Topr=-40~+85°C, Tj= ~+150°C, PD=16W(TC 46°C)) 18 16 Power Dissipation PD (W) 14 12 10 8 6 4 2 0 25 50 75 Ambient Temperature Ta (°C) 100 Without Heat Sink θHS=10°C/W θHS=5°C/W Heat Sink θHS=20°C/W -2- NJM236...


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