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參數資料
| 型號： | UTCUC3843A |
| 廠商： | 友順科技股份有限公司 |
| 英文描述： | CURRENT MODE PWM CONTROL CIRCUITS |
| 中文描述： | 電流模式PWM控制電路 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 114K |
| 代理商： | UTCUC3843A |
UTC UC3842A / 3843A
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R103-002,A
CURRENT MODE PWM CONTROL
CIRCUITS
DESCRIPTION
The UTC UC3842A/3843A provide the necessary functions
to implement off-line or DC to DC fixed frequency current
mode , controlled switching circuits with a minimal external
part count
FEATURES
*Low external part count.
*Low start up current ( Typical 0.12mA )
*Automatic feed forward compensation
*Pulse-by-Pulse current limiting
*Under-voltage lockout with hysteresis
*Double pulse Suppression
*High current totem pole output to drive MOSFET directly
*Internally trimmed band gap reference
*500kHz operation
BLOCK DIAGRAM
DIP-8
SOP-8
ABSOLUTE MAXIMUM RATINGS
(Ta=25
°
C)
PARAMETER
Supply Voltage(Low Impedance Source)
Supply Voltage(Icc<30mA)
Output Current ( Peak )
Output Energy(capacity Load)
Analog Inputs(pin 2,3)
Error Amplifier Output Sink Current
Power Dissipation
PD DIP-8
SOP-8
Lead Temperature( Soldering 10 Sec )
7
5
7
6
5
4
3
1
2
8
Internal
Bias
5V REF
S/R
U.V.L.O
R
S
PWM
LATCH
Vref
Good
Logic
ERROR
AMPLIFIER
1/2Vref
1/3Vref
1V
OSCILLATOR
Vref
VFB
COMP
CURRENT SENSE
RT/CT
Vcc
GND
OUTPUT
Vcc
GND
CURRENT
SENSE
COMPARATOR
SYMBOL
V
CC
Vcc
Io
V
I(ANA)
I
SINK(EA)
VALUE
30
Self Limiting
+-1
5
-0.3 ~ +6.3
10
UNIT
V
V
A
μ
J
V
mA
W
W
°
C
at T
amb
<=25
°
C 1.0
at T
amb
<=25
°
C 0.5
300
Tlead
相關PDF資料 |
PDF描述 |
|---|---|
| UTCUC723 | ADJUSTABLE VOLTAGE REGULATOR |
| UTCULN2003 | SEVEN DARLINGTON ARRAYS |
| UTCUM66TXXL | MELODY INTEGRATED CIRCUIT |
| UTCUR132 | 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING |
| UTCUR133 | LINEAR INTEGRATED CIRCUIT |
相關代理商/技術參數 |
參數描述 |
|---|---|
| UTCUC723 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:ADJUSTABLE VOLTAGE REGULATOR |
| UTCULN2003 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:SEVEN DARLINGTON ARRAYS |
| UTCUM66TXXL | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:MELODY INTEGRATED CIRCUIT |
| UTCUR0033 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LINEAR INTEGRATED CIRCUIT |
| UTCUR132 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LINEAR INTEGRATED CIRCUIT |
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