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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The UCC35701D is a Pulse Width Modulation (PWM) Controller intended for isolated switching power supplies using primary side control. They can be used for both off-line applications and DC/DC converter designs such as in a distributed power system architecture or as a telecom power source. It features low startup current, allowing for efficient off-line starting, yet have sufficient output drive to switch power MOSFETs in excess of 500kHz. Voltage feed forward compensation is operational over a 5:1 input range and provides fast and accurate response to input voltage changes over a 4:1 range. An accurate volt-second clamp and maximum duty cycle limit are also featured. Fault protection is provided by pulse by pulse current limiting as well as the ability to latch off after a programmable number of repetitive faults has occurred.
Integrated oscillator/voltage feed forward compensation
Accurate duty cycle limit
Accurate volt-second clamp
Optocoupler interface
Fault counting shutdown
Fault latch off or automatic shutdown
Soft stop optimized for synchronous rectification
1A Peak gate drive output
130µA Start-up current
750µA Operating current
Green product and no Sb/Br

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UCC35701D Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	14 Pin
Case/Package	SOIC-14
Frequency	700 kHz
Supply Voltage (DC)	10.0V (min)
Number of Outputs	1 Output
Input Voltage (DC)	11.0 V
Output Voltage	1 V
Output Current	100 mA
Number of Positions	14 Position
Number of Regulated Outputs	1 Output
Rise Time	20 ns
Switching Frequency	700 kHz
Topology	Buck, Boost, Flyback, Forward
Duty Cycle	100 %
Maximum Duty Cycle	100 %
Fall Time	20 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	10V ~ 14V
Supply Voltage (Max)	13 V
Supply Voltage (Min)	10 V
Input Voltage	11 V
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Size-Length	8.65 mm
Size-Width	3.91 mm
Size-Height	1.58 mm
Operating Temperature	-55℃ ~ 150℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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