UCC3813-4 Unitrode Low Power BiCMOS Current Mode PWM Data Sheet
Download PDF datasheet for Unitrode Integrated Circuits UCC3813-4 Low Power BiCMOS Current Mode PWM (EN) 7 pages 1996 zip
Description
This PDF datasheet is for the Unitrode UCC3813-4 PWM.
Unitrode UCC3813-4 Low Power BiCMOS Current Mode PWM
The UCC3813 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 UC3842/3/4/5 family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
The UCC3813 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels.
The UCC3813-x series is specified for operation from 0 deg C to +70 deg C.
FEATURES:
– 100mA Typical Starting Supply Current
– 500mA Typical Operating Supply Current
– Operation to 1MHz
– Internal Soft Start
– Internal Fault Soft Start
– Internal Leading-Edge Blanking of the Current Sense Signal
– 1 Amp Totem-Pole Output
– 70ns Typical Response from Current-Sense to Gate Drive Output
– 1.5% Tolerance Voltage Reference
– Same Pinout as UCC3802, UC3842, and UC3842A
(PDF) DATASHEET (ENGLISH)
CONTENTS
BLOCK DIAGRAM
UCC3813-4 PINOUT
ABSOLUTE MAXIMUM RATINGS
CONNECTION DIAGRAM
ELECTRICAL CHARACTERISTICS
PIN DESCRIPTIONS
Figures:
– Error Amplifier Gain/Phase Response
– Vref vs. Vcc
– Oscillator Frequency vs. Rt and Ct
– Max. Duty Cycle vs. Oscillator Frequency
– Icc vs. Oscillator Frequency
– Dead Time vs. Ct
Why download the Datasheet?
This datasheet provides all the information from Unitrode Integrated Circuits about the UCC3813-4 PWM, as detailed in the table of contents. Reading it completely will address most questions you might have. You can download and save it for offline use, including viewing it on your device or printing it for your convenience if you prefer a paper version.
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