Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

SG6846A Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part # SG6846A
Description  Highly Integrated Green-Mode PWM Controller
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

SG6846A Datasheet(HTML) 2 Page - Fairchild Semiconductor

  SG6846A Datasheet HTML 1Page - Fairchild Semiconductor SG6846A Datasheet HTML 2Page - Fairchild Semiconductor SG6846A Datasheet HTML 3Page - Fairchild Semiconductor SG6846A Datasheet HTML 4Page - Fairchild Semiconductor SG6846A Datasheet HTML 5Page - Fairchild Semiconductor SG6846A Datasheet HTML 6Page - Fairchild Semiconductor SG6846A Datasheet HTML 7Page - Fairchild Semiconductor SG6846A Datasheet HTML 8Page - Fairchild Semiconductor SG6846A Datasheet HTML 9Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 2 / 13 page
background image
Product Specification
Highly Integrated Green-Mode PWM Controller
SG6846A
© System General Corp.
- 2 -
www.sg.com.tw • www.fairchildsemi.com
Version 1.1.1 (IAO33.0059.B1)
September 26, 2007
MARKING DIAGRAMS
PIN CONFIGURATION
ORDERING INFORMATION
Part Number
OCP Latch
Pb-Free
Package
SG6846ALSZ
Yes
8-Pin SOP
SG6846ACSZ (Preliminary)
No
8-Pin SOP
PIN DESCRIPTIONS
Pin No. Symbol
Function
Description
1
GND
Ground
Ground.
2
FB
Feedback
The signal from the external compensation circuit is fed into this pin. The PWM duty cycle is
determined in response to the signal from this pin and the current-sense signal from Pin 6.
3
VIN
Line-voltage
Detection
Line-voltage detection. The line-voltage detection is used for brownout protection with
hysteresis. Constant output power limit over a universal AC input range is also achieved using
this VIN pin. Consider adding a low-pass filter to filter out line ripple on the bulk capacitor.
4
RI
Reference
Setting
A resistor from the RI pin to ground generates a reference current source that determines the
switching frequency. Increasing the resistance reduces the switching frequency. Using a
26kΩ resistor results in a 65kHz switching frequency.
5
RT
Temperature
Detection
For over-temperature protection, an external NTC thermistor is connected from this pin to the
GND pin. The impedance of the NTC decreases at high temperatures. Once the voltage of the
RT pin drops below a threshold, PWM output is disabled.
6
SENSE
Current Sense
Current sense. The sensed voltage is used for peak-current-mode control and cycle-by-cycle
current limiting. If the switching current is higher than two thirds of the peak-current threshold
for longer than 100ms and VDD is higher than 12V and lasts for 1700ms, over-current
protection is activated. If an output short over-current also occurs and lasts for 100ms and
VAUX is lower than 12V, SG6846A turns off immediately. This two-level OCP feature is
especially suitable for SMPS with surge current output. It also has built-in 5ms soft-start time
as switching frequency operates at 65KHz.
7
VDD
Power Supply
Power supply. If an open-circuit failure occurs in the feedback loop, the internal protection
circuit disables PWM output as long as VDD exceeds the threshold.
8
GATE
Driver Output
The totem-pole output driver for the power MOSFET, internally clamped below 18V.
F: L=OCP Latch, C=OCP
auto-recovery
T: S=SOP
P : Z=Lead Free
Null=regular package
XXXXXXXX: Wafer Lot
Y: Year; WW: Week
V: Assembly Location
GATE
VDD
GND
FB
SG6846AFTP
XXXXXXXXYWWV
VIN
SENSE
RI
RT


Similar Part No. - SG6846A

ManufacturerPart #DatasheetDescription
logo
Fairchild Semiconductor
SG6846A FAIRCHILD-SG6846A Datasheet
476Kb / 15P
   Highly Integrated Green-Mode PWM Controller
SG6846A FAIRCHILD-SG6846A Datasheet
343Kb / 8P
   Control a Flyback Power Supply with Surge Current Output
SG6846ACSY FAIRCHILD-SG6846ACSY Datasheet
476Kb / 15P
   Highly Integrated Green-Mode PWM Controller
SG6846ALSY FAIRCHILD-SG6846ALSY Datasheet
476Kb / 15P
   Highly Integrated Green-Mode PWM Controller
SG6846ALSZ FAIRCHILD-SG6846ALSZ Datasheet
476Kb / 15P
   Highly Integrated Green-Mode PWM Controller
More results

Similar Description - SG6846A

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
SG6846 ETC1-SG6846 Datasheet
3Mb / 14P
   Highly-Integrated Green-Mode PWM Controller
logo
Fairchild Semiconductor
SG6741 FAIRCHILD-SG6741 Datasheet
619Kb / 13P
   Highly-Integrated Green-Mode PWM Controller
FAN6862WLTY FAIRCHILD-FAN6862WLTY Datasheet
2Mb / 16P
   Highly Integrated Green-Mode PWM Controller
SG6846B FAIRCHILD-SG6846B Datasheet
451Kb / 15P
   Highly Integrated Green-Mode PWM Controller
SG6741A FAIRCHILD-SG6741A Datasheet
557Kb / 12P
   Highly Integrated Green-Mode PWM Controller
SG6846A FAIRCHILD-SG6846A_08 Datasheet
476Kb / 15P
   Highly Integrated Green-Mode PWM Controller
SG6846G FAIRCHILD-SG6846G Datasheet
376Kb / 14P
   Highly Integrated Green-Mode PWM Controller
FAN6751MR FAIRCHILD-FAN6751MR Datasheet
468Kb / 13P
   Highly-Integrated Green-Mode PWM Controller
FAN6863RTY FAIRCHILD-FAN6863RTY Datasheet
1Mb / 16P
   Highly Integrated Green-Mode PWM Controller
SG5842A FAIRCHILD-SG5842A_09 Datasheet
573Kb / 15P
   Highly Integrated Green-Mode PWM Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com