Automotive economy single ended 1MHz current mode PWM controller with 9.4V/7.4V UVLO 50% duty cycle

Automotive economy single ended 1MHz current mode PWM controller with 9.4V/7.4V UVLO 50% duty cycle



Product details


Topology Boost, Flyback, Forward Control method Current VCC (Min) (V) 9.4 VCC (Max) (V) 11 Duty cycle (Max) (%) 50 UVLO thresholds on/off (V) 9.4/7.4 Frequency (Max) (kHz) 1000 Operating temperature range (C) -40 to 125 Gate drive (Typ) (A) 1 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start Rating Automotive open-in-new Find other PWM controllers & resonant controllers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other PWM controllers & resonant controllers


  • Qualified for Automotive Applications
  • ESD Protection Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • 100-µA Typical Starting Supply Current
  • 500-µA Typical Operating Supply Current
  • Operation to 1 MHz
  • Internal Soft Start
  • Internal Fault Soft Start
  • Internal Leading-Edge Blanking of the Current Sense Signal
  • 1-A Totem-Pole Output
  • 70 ns Typical Response from Current-Sense to Gate Drive Output
  • 1.5% Tolerance Voltage Reference
  • Same Pinout as UC3802, UC3842, and UC3842A

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The UCC2813-0/-1/-2/-3/-4/-5 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and dc-to-dc fixed frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC2842/3/4/5 family and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC2813-0/-1/-2/-3/-4/-5 family offers choice of maximum duty cycle and critical voltage levels. Lower reference parts such as the UCC2813-3 and UCC2813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC2813-2 and UCC2813-4 make these ideal choices for use in off-line power supplies.

The UCC2813-xQ-Q1 series is specified for the automotive temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Datasheet Low-Power BICMOS Current-Mode PWM datasheet (Rev. D) Apr. 30, 2008

Design & development

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Design tools & simulation

SLUM069B.ZIP (87 KB) - PSpice Model
SLUM513.ZIP (6 KB) - PSpice Model

Reference designs

Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA)
PMP2187 — This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
Design files
Design files

CAD/CAE symbols

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SOIC (D) 8 View options

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