SG2524.Regulating Pulse-Width Modulator

TheSG2524.is a fixed frequencyPWM Modulator IC. This IC is specially designed for switching regulators of either polarity, transformer-coupled dc-to-dc converters, transformerless voltage doublers, and polarity-converter applications.

Pin Description SG2524 IC

Pin Number	Pin Name	Description
1	在-	Negative error amplifier input
2	IN+	Positive error amplifier input
3	OSC OUT	Oscillator Output
4	Curr Lim +	Positive current limiting amplifier input
5	Curr Lim-	负电流限制放大器输入
6	RT	Resistor terminal used to set the oscillator frequency
7	CT	Capacitor terminal used to set the oscillator frequency
8	GND	Ground Pin
9	COMP	误差放大器补偿引脚
10	SHUTDOWN	设备关闭销钉
11	EMIT 1	发射器终端of BJT output 1
12	COL 1	BJT输出的收集器端子1
13	COL 2	BJT输出的收集器端子2
14	EMIT 2	发射器是机器的终端输出2
15	VCC	Positive supply Pin
16	REF OUT	参考调节器输出引脚

SG2524.Specifications

• Operating Supply Voltage: 8 V to 40 V
• Output Voltage: 5 V
• Output Current: 50 mA
• Switching Frequency: 0.13 kHz to 722 kHz
• Duty Cycle - Max: 45 %
• Operating Temperature Range: - 25 C to + 85 C
• Rise Time: 200 ns
• Fall Time: 100 ns
• Number of Outputs:2 Output

Note:Complete Technical Details can be found in the SG2524 datasheet given at the end of this page.

Equivalent/Substitute forSG2524.:SG3524

Alternatives PWM controller IC:UC2842, UC3844, UC3842

Where to use the SG2524 PWM Controller IC

SG2524.is a Regulating Pulse-Width Modulator IC that incorporates all the functions required in the construction of a regulating power supply, inverter, or switching regulator on a single chip. SG2524 includes on-chip regulator, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted pass transistors, a high-gain comparator, and current-limiting and shutdown circuitry.

SG2524可用于如极性，变压器耦合的DC-DC转换器，变压器电压倍增器和极性转换器应用的开关稳压器等应用中。They also can be used as the control element for high-power-output applications. So if you are looking for an IC to produce PWM signals for controlling a power switch based on the current flowing through the circuit, then this IC might be the right choice for you.

How to use SG2524 IC

Although the IC performs a sophisticated job, using it in a circuit is fairly simple and can be done with a minimum number of external components that make this IC a preferable choice among designers. A sample test circuit of this IC datasheet is shown below

该IC在8V至40V之间的宽工作电压。调节器以固定频率运行，由一个定时电阻，RT和一个定时电容器，CT编程为CT。该IC还具有内部5V电压调节器，为SG2524内部稳压器控制电路提供电源。内部参考电压通过电阻器梯形图网络划分，并且通过第二电阻分频器网络感测输出。

Applications of SG2524

• SMPS (Switch Mode Power Supplies) circuits
• DC-DC converter circuits
• Electronics power supply
• Battery drain circuit
• Load machines

2D-Model ofSG2524.IC

Dimensions for SG2524 IC is given below. These dimensions are for a 16-PinPDSOpackage. If you are using a different package IC, please refer to the SG2524 datasheet.