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SDC3843 데이터시트 PDF




SDC에서 제조한 전자 부품 SDC3843은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 SDC3843 자료 제공

부품번호 SDC3843 기능
기능 Current Mode PWM Controller
제조업체 SDC
로고 SDC 로고


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SDC3843 데이터시트, 핀배열, 회로
Current Mode PWM Controller
Datasheet
SDC3842/3843/3844/3845
General Description
Features
The SDC384X are high performance fixed frequency
current-mode PWM controller series. These integrated
Tcircuits are optimized for off-line and DC-DC converter
Napplications with minimum external components. They
Efeature under-voltage lockout (UVLO) circuit with low
start-up current, trimmed oscillator for precise duty
Mcycle control, current sense comparator providing
maximum current limiting and a totem pole output
Ustage for increasing output current. In addition, these
CICs also feature accurate protection against
over-temperature, over-current and maximal output
Opower.
DThe SDC3842 and SDC3844 have UVLO thresholds of
L16V(ON) and 10V(OFF); The corresponding thresholds
IAfor SDC3843 and SDC3845 are 8.4V(ON) and 7.6V(OFF).
The SDC3842 and SDC3843 can operate approaching
T100% duty cycle; SDC 3844 and SDC3845 can operate
CONFIDENfrom zero to 50% duty cycle.
Start-up current: 0.15mA
Low line regulation: 4mV
Low load regulation: 4mV
Operating frequency up to 500kHz
High PWM frequency stability over a full
temperature range: 2.5%
High PWM frequency stability under a full supply
voltage range: 0.2%
Accurate over-temperature
Protection with hysteresis
UVLO with hysteresis
Package: SOP-8, DIP-8
Applications
Off-line converter
DC-DC converter
Voltage adapter
CRT monitor power supply
DVD/STB power supply
SDC
DIP-8
SOP-8
Figure 1. Package Type
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/12
www.sdc-semi.com




SDC3843 pdf, 반도체, 판매, 대치품
Current Mode PWM Controller
Datasheet
SDC3842/3843/3844/3845
Ordering Information
SDC384X X X - X
Package
DIP-8
SOP-8
SOP-8
Circuit Type
TPackage
DIP-8: Z
NSOP-8: U
ETemperature
Pb-free
Part Number
Halogen-free
M-40~85SDC3842/3/4/5Z-E1 SDC3842/3/4/5Z-G1
U-40~85SDC3842/3/4/5UTR-E1 SDC3842/3/4/5UTR-G1
CONFIDENTIAL DOC-40~85SDC3842/3/4/5U-E1 SDC3842/3/4/5U-G1
E1: Pb-free
G1: Halogen-free
Blank: Tube
TR: Tape Reel
Marking ID
Pb-free
Halogen-free
SDC3842/3/4/5 SDC3842/3/4/5G
SDC3842/3/4/5 SDC3842/3/4/5G
SDC3842/3/4/5 SDC3842/3/4/5G
Packing
Type
Tube
Tape
Reel
Tube
SDC
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
4/12
www.sdc-semi.com

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SDC3843 전자부품, 판매, 대치품
Current Mode PWM Controller
Datasheet
SDC3842/3843/3844/3845
Parameter
Symbol
Conditions
Min Typ Max Unit
Input bias current
IBIAS -
- -3 -10 uA
Output Section
Low output voltage
TLow output voltage
High output voltage
NHigh output voltage
ERise time
Fall time
UMShutdown temperature
CONFIDENTIAL DOCTemperaturehysteresis
V OL
ISINK=20mA
ISINK =200mA
V OH
ISOURSE =20mA
ISOURSE =200mA
tr TJ=25°C, CL=1nF
tf TJ =25°C, CL =1nF
Over-temperature Protect Section
TS -
T HYS
-
-
-
13
12
-
-
-
-
Table 4. Electrical Characteristics
0.1 0.4
1.4 2.2
14 -
13 -
50 150
50 150
155 -
25 -
V
V
V
V
ns
ns
°C
°C
SDC
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
7/12
www.sdc-semi.com

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