SDC3845 Datasheet PDF - SDC
| Part Number | SDC3845 | |
| Description | Current Mode PWM Controller | |
| Manufacturers | SDC | |
| Logo |  |
|
|
There is a preview and SDC3845 download ( pdf file ) link at the bottom of this page. Total 12 Pages | ||
Preview 1 page No Preview Available !
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
|
| |
 
Current Mode PWM Controller
Datasheet
SDC3842/3843/3844/3845
Absolute Maximum Ratings (NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause
permanent damage to the device.)
Parameter
Symbol
Value
Unit
Supply voltage
TOutput current
Analog inputs (pin2/pin3)
NError amp output sink current
EPower dissipation at Ta< 25°C (DIP-8)
MPower dissipation at Ta<25°C (SOP-8)
UOperating Junction Temperature
Storage temperature
CLead temperature (soldering, 10s)
OLatch-up test per JEDEC 78
DESD, HBM model per Mil-Std-883, Method 3015
LESD, MM model per JEDEC EIA/JESD22-A115
V CC
IO
VA
I SINK
PD
PD
TJ
T STG
T LEAD
-
HBM
MM
IATable 2. Absolute Maximum Ratings
TRecommended Operating Conditions
Parameter
NOscillation frequency
EOperating temperature
Symbol
f OSC
Ta
Min
50
-40
CONFIDTable 3. Recommended Operating Conditions
30
±1
-0.3~6.3
10
1000
460
-40~150
-55~150
260，10s
200
2000
200
Max
200
85
V
A
V
mA
mW
mW
°C
°C
°C
mA
V
V
Unit
kHz
°C
SDC
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/12
www.sdc-semi.com
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SDC3845 electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SDC3845.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| SDC3842 | The function is Current Mode PWM Controller. SDC | |
| SDC3843 | The function is Current Mode PWM Controller. SDC | |
| SDC3844 | The function is Current Mode PWM Controller. SDC | |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
SDC3
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||