NJM2367
5.5A HIGH POWER DC/DC CONVERTER CONTROLLER IC
IGENERAL DESCRIPTION
IPACKAGE OUTLINE
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.
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NJM2367TA2050
IFEATURES
GOperating Voltage
(7.5V to 40V)
GPWM form Switching Power Supply Control
GInternal High Power Transistor
5.5A (min.)
GFixed Frequency Oscillator
72kHz (typ.)
GInternal Current Sense Amplifier
GInternal Under Voltage Lockout
GInternal Thermal Shutdown Circuit
GBipolar Technology
GPackage Outline
TO-22O(5PIN)
NJM2367TLA2050
PIN FUNCTION
1:VFB
2:SW OUT
3:GND
4:V+
5:STBY (VCOMP)
IBLOCK DIAGRAM
5.5A Power Transistor
4
Current Sense
Amplifier
2
Current Detection
Transistor
Thermal
Shutdown
Reference
Voltage
ON/OFF
Oscillator
S
VREF
Q
R
Latch Circuit
Under Voltage
PWM Comparator
Lockout
VREF
1
Standby Circuit
Error Amplifier
5
3
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