參數(shù)資料
型號(hào): 5962-9457501QEA
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDIP16
封裝: DIP-16
文件頁(yè)數(shù): 1/11頁(yè)
文件大?。?/td> 239K
代理商: 5962-9457501QEA
UCC1806
UCC2806
UCC3806
Low Power, Dual Output, Current Mode PWM Controller
FEATURES
BiCMOS Version of UC1846 Families
1.4mA Maximum Operating Current
100A Maximum Startup Current
1.0A Peak Output Current
125nsec Circuit Delay
Easier Parallelability
Improved Benefits of Current Mode
Control
DESCRIPTION
The UCC1806 family of BiCMOS PWM controllers offers exceptionally im-
proved performance with a familiar architecture. With the same block dia-
gram and pinout of the popular UC1846 series, the UCC1806 line features
increased switching frequency capability while greatly reducing the bias
current used within the device. With a typical startup current of 50
A and a
well defined voltage threshold for turn-on, these devices are favored for ap-
plications ranging from off-line power supplies to battery operated portable
equipment. Dual high current, FET driving outputs and a fast current sense
loop further enhance device versatility.
All the benefits of current mode control including simpler loop closing, volt-
age feed-forward, parallelability with current sharing, pulse-by-pulse current
limiting, and push-pull symmetry correction are readily achievable with the
UCC1806 series.
(continued)
10
7
3
8
SYNC
9
RT
4.4V
1.5V
OSC
LO
CT
3X
4
5
EA
6
120
A
1
S
1
QB
R
S
2
13
VC
11
AOUT
14
BOUT
12
GND
T
Q
QB
SHUTDOWN
LOCK OUT
S
1
Q
R
S
2
200
A
Q
R
S
16
200k
1.00V
0.35V
Q
R
S
CURRENT LIMIT
RESTART
UNDER VOLTAGE LOCKOUT
15
15V
5.1V
REFERENCE
REGULATOR
REFERENCE LOW
4.25V
2
CURLIM
SHUTDOWN
VREF
0.5V
+
COMP
7.0V
7.5V
CS–
CS+
NI
INV
COMP
VIN
BLOCK DIAGRAM
02/99
UDG-99035
Pin numbers refer to DIL-16 package.
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