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.
sPACKAGE
OUTLINE
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NJM2367TA2050
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)
NJM2367TLA2050
PIN FUNCTION
1:V
FB
2:SW
OUT
3:GND
4:V
+
5:STBY (V
COMP
)
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
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