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Updated at 23/10/2025 10:30:15(UTC+8)

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Description

The UC1526 is a high performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and setting logic, and two low impedance power drivers. Also included are protective features such as soft-start and under-voltage lockout, digital current limiting, double pulse inhibit, a data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. For ease of interface, all digital control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformerless and transformer coupled. The UC1526 is characterized for operation over the full military temperature range of -55°C to +125°C. The UC2526 is characterized for operation from -25°C to +85°C, and the UC3526 is characterized for operation from 0° to +70°C. View datasheet View product folder

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UC3526N Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	18 Pin
Case/Package	PDIP-18
Frequency	400 kHz
Supply Voltage (DC)	35.0V (max)
Number of Outputs	2 Output
Input Voltage (DC)	35.0 V
Output Voltage	13 V
Output Current	100 mA
Power Dissipation	1000 mW
Quiescent Current	14.0 mA
Number of Regulated Outputs	2 Output
Rise Time	300 ns
Switching Frequency	400 kHz
Topology	Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
Duty Cycle	49 %
Maximum Duty Cycle	49 %
Fall Time	100 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	1000 mW
Supply Voltage	8V ~ 35V
Supply Voltage (Max)	35 V
Supply Voltage (Min)	8 V
Input Voltage	35 V
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Size-Length	22.48 mm
Size-Width	6.35 mm
Size-Height	4.57 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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