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參數(shù)資料
| 型號(hào)： | UCC1809 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Economy Primary Side Controller |
| 中文描述： | 經(jīng)濟(jì)初級(jí)側(cè)控制器 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大?。?/td> | 131K |
| 代理商： | UCC1809 |
UCC1809-1/-2
UCC2809-1/-2
UCC3809-1/-2
SLUS166A - NOVEMBER 1999
FEATURES
User Programmable Soft Start With
Active Low Shutdown
User Programmable Maximum Duty
Cycle
Accessible 5V Reference
Undervoltage Lockout
Operation to 1MHz
0.4A Source/0.8A Sink FET Driver
Low 100
μ
A Startup Current
Economy Primary Side Controller
1
3
2
7
FB
1V
6
μ
A
+5V
0.5V
OSC
4
R
Q
S
5V
REF
15/8V
10/8V
VDD
8
REF
C
REF
C
VDD
5
V
REF
SS
RT1
RT2
C
SS
DISABLE
NOISE
FILTER
SLOPE
COMP
CURRENT
SENSE
FEEDBACK
R
START
V
IN
CLK
PWM
LATCH
UVLO
1V
V
OUT
C
T
6
17.5V
OUT
GND
TYPICAL APPLICATION DIAGRAM
UDG-99036
DESCRIPTION
The UCC3809 family of BCDMOS economy low power integrated circuits
contains all the control and drive circuitry required for off-line and isolated
DC-to-DC fixed frequency current mode switching power supplies with
minimal external parts count. Internally implemented circuits include
undervoltage lockout featuring startup current less than 100
μ
A, a user ac-
cessible voltage reference, logic to ensure latched operation, a PWM com-
parator, and a totem pole output stage to sink or source peak current. The
output stage, suitable for driving N-Channel MOSFETs, is low in the off
state.
Oscillator frequency and maximum duty cycle are programmed with two
resistors and a capacitor. The UCC3809 family also features full cycle soft
start.
The family has UVLO thresholds and hysteresis levels for off-line and
DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP
(N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and
MSOP packages make the device ideal for applications where board
space and height are at a premium.
PART
NUMBER
UCCX809-1
UCCX809-2
TURN ON
THRESHOLD
10V
15V
TURN OFF
THRESHOLD
8V
8V
application
INFO
available
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC1809-1 | Economy Primary Side Controller |
| UCC1809-2 | Economy Primary Side Controller |
| UCC2809 | Economy Primary Side Controller |
| UCC1809-x | Economy Primary Side Controller |
| UCC1810 | Dual Channel Synchronized Current Mode PWM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC1809-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Economy Primary Side Controller |
| UCC1809-1_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Economy Primary Side Controller |
| UCC1809-2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Economy Primary Side Controller |
| UCC1809J-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Economy Primary Side Controller |
| UCC1809J-2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Economy Primary Side Controller |
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