參數(shù)資料
型號: LM5030
廠商: National Semiconductor Corporation
英文描述: 100V Push-Pull Current Mode PWM Controller
中文描述: 100V的推挽式電流模式PWM控制器
文件頁數(shù): 3/11頁
文件大?。?/td> 230K
代理商: LM5030
Pin Description
Pin Name
Pin
Number
1
2
Description
Application Information
V
IN
V
FB
Source Input Voltage
Inverting input to the error amplifier The non-inverting input is internally connected to a 1.25 Volt
reference.
Output to the error amplifier
There is an internal 5K resistor pull-up on this pin. The error
amplifier provides an active sink.
Output from the internal high
voltage series pass regulator. The
regulation setpoint is 7.7 Volts.
shutdown, reducing the IC power dissipation.
Output of the PWM controller
Alternating PWM output gate driver.
Output of the PWM controller
Alternating PWM output gate driver.
Return
Ground
Current sense input
Current sense input for current mode control and current limit
sensing. Using separate dedicated comparators, if CS exceeds
0.5 Volt the outputs will go into Cycle by Cycle current limit. If CS
exceeds 0.625V the outputs will be disabled and a softstart
commenced.
Oscillator timing resistor pin and
synchronization input.
also accept synchronization pulses from an external oscillator.
Dual purpose Softstart and
Shutdown pin
timing length. The controller will enter a low power state if the SS
pin is pulled below the typical shutdown threshold of 0.45V.
Input to start-up regulator. Input range 14 to 100 Volts.
COMP
3
Vcc
4
If an auxiliary winding raises the voltage on this pin above the
regulation setpoint the internal series pass regulator will
OUT1
OUT2
GND
CS
5
6
7
8
RT
9
An external resistor sets the oscillator frequency. This pin will
SS
10
A 10μA current source and an external capacitor set the softstart
L
www.national.com
3
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