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SGLS135E − SEPTEMBER 2002 − REVISED DECEMBER 2007
D
Controlled Baseline
− One Assembly
− One Test Site
D
D
D
D
Operation to 1 MHz
Internal Soft Start
Internal Fault Soft Start
− One Fabrication Site
Internal Leading-Edge Blanking of the
Current Sense Signal
D
D
D
D
D
Extended Temperature Performance of
−55°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
D
1 Amp Totem-Pole Output
D
70 ns Typical Response from
Current-Sense to Gate Drive Output
Enhanced Product Change Notification
D
D
1.5% Tolerance Voltage Reference
†
Qualification Pedigree
Same Pinout as UC3842 and UC3842A
ESD Protection Exceeds 200 V Using
Machine Model (C = 200 pF, R = 0)
D PACKAGE
(TOP VIEW)
D
100 µA Typical Starting Supply Current
500 µA Typical Operating Supply Current
D
COMP
FB
REF
1
2
3
4
8
7
6
5
†
Component qualification in accordance with JEDEC and industry
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
V
CC
CS
OUT
GND
RC
description
The UCC2800/1/2/3/4/5 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 UCC2800/1/2/3/4/5 family offers choice of maximum duty cycle and critical voltage levels. Lower reference
parts such as the UCC2803 and UCC2805 fit best into battery operated systems, while the higher reference
and the higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line
power supplies.
PART NUMBER
UCC2800
UCC2801
UCC2802
UCC2803
UCC2804
UCC2805
MAXIMUM DUTY CYCLE REFERENCE VOLTAGE
TURN-ON THRESHOLD TURN-OFF THRESHOLD
100%
50%
5 V
5 V
5 V
4 V
5 V
4 V
7.2 V
9.4 V
12.5 V
4.1 V
12.5 V
4.1 V
6.9 V
7.4 V
8.3 V
3.6 V
8.3 V
3.6 V
100%
100%
50%
50%
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2007, Texas Instruments Incorporated
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