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UCC2804 Datasheet Preview

UCC2804 Datasheet

Low-Power BiCMOS Current-Mode PWM Controllers

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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 leading-
edge 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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

UCC2804 Datasheet Preview

UCC2804 Datasheet

Low-Power BiCMOS Current-Mode PWM Controllers

No Preview Available !

UCC1800, UCC1801, UCC1802, UCC1803, UCC1804, UCC1805
UCC2800, UCC2801, UCC2802, UCC2803, UCC2804, UCC2805
UCC3800, UCC3801, UCC3802, UCC3803, UCC3804, UCC3805
SLUS270E – MARCH 1999 – REVISED JUNE 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Device Comparison Table..................................... 3
7 Pin Configuration and Functions ......................... 4
8 Specifications......................................................... 6
8.1 Absolute Maximum Ratings ...................................... 6
8.2 ESD Ratings.............................................................. 6
8.3 Recommended Operating Conditions....................... 6
8.4 Thermal Information ................................................. 7
8.5 Electrical Characteristics........................................... 7
8.6 Typical Characteristics .............................................. 9
9 Detailed Description ............................................ 11
9.1 Overview ................................................................. 11
9.2 Functional Block Diagram ....................................... 11
9.3 Feature Description................................................. 11
9.4 Device Functional Modes ....................................... 23
10 Application and Implementation........................ 25
10.1 Application Information.......................................... 25
10.2 Typical Application ............................................... 25
11 Power Supply Recommendations ..................... 34
12 Layout................................................................... 34
12.1 Layout Guidelines ................................................ 34
12.2 Layout Example .................................................... 35
13 Device and Documentation Support ................. 36
13.1 Related Links ........................................................ 36
13.2 Community Resources.......................................... 36
13.3 Trademarks ........................................................... 36
13.4 Electrostatic Discharge Caution ............................ 36
13.5 Glossary ................................................................ 36
14 Mechanical, Packaging, and Orderable
Information ........................................................... 37
4 Revision History
Changes from Revision D (August 2010) to Revision E
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
Changes from Revision A (September 2000) to Revision B
Page
• Updated Abs Max Table to read: Analog Inputs (FB, CS, RC, COMP)... –0.3V to the lesser of 6.3V or VCC + 0.3V
From: Analog Inputs (FB, CS)... –0.3V to 6.3V ...................................................................................................................... 6
2 Submit Documentation Feedback
Copyright © 1999–2016, Texas Instruments Incorporated
Product Folder Links: UCC1800 UCC1801 UCC1802 UCC1803 UCC1804 UCC1805 UCC2800 UCC2801 UCC2802
UCC2803 UCC2804 UCC2805 UCC3800 UCC3801 UCC3802 UCC3803 UCC3804 UCC3805


Part Number UCC2804
Description Low-Power BiCMOS Current-Mode PWM Controllers
Maker etcTI
Total Page 30 Pages
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