Low-Power BiCMOS Current-Mode PWM Controllers
Description
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UCC1800, UCC1801, UCC1802, UCC1803, UCC1804, UCC1805 UCC2800, UCC2801, UCC2802, UCC2803, UCC2804, UCC2805 UCC3800, UCC3801, UCC3802, UCC3803, UCC3804, UCC3805
SLUS270E – MARCH 1999 – REVISED JUNE 2016
UCC180x, UCC280x, UCC380x Low-Power BiCMOS Current-Mode PWM Controllers
1 Features
•1 100-μA Typical Starting Supply Current • 500-μA Typical Operating Supply Current • Operation up 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 UC3842 and UC3842A
2 Applications
• Switch Mode Power Supplies (SMPS) • DC-to-DC Converters • Power Modules • Industrial PSU • Battery-Operated PSU
3 Description
The UCCx80x 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 mode power supplies with minimal parts count.
These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leadingedge blanking of the current-sense input.
Device Information(1)
PART NUMBER
PACKAGE BODY SIZE (NOM)
UCC1800
LCC (20) CDIP (8)
8.
89 mm × 8.
89 mm 6.
67 mm × 9.
60 mm
UCC1801, UCC1802, UCC1803, UCC1804, UCC1805
CDIP (8)
6.
67 mm × 9.
60 mm
UCC2800, UCC2801, UCC2802, UCC2803, UCC2804, UCC2805, UCC3800, UCC3801, UCC3802, UCC3803, UCC3804, UCC3805
TSSOP (8) SOIC (8)
PDIP (8)
4.
40 mm × 3.
00 mm 3.
91 mm × 4.
90 mm
6.
35 mm × 9.
81 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Application Diagram
Vin Cin
UCC2803
7 VCC
OUT 6
8 REF
CS 3
FB 2
4 RC
GND 5
COMP 1
Vout Cout
Copyright © 2016, Texas Instruments Incorporated
1
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