Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

SG1577SY Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part # SG1577SY
Description  Dual Synchronous DC/DC Controller
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

SG1577SY Datasheet(HTML) 4 Page - Fairchild Semiconductor

  SG1577SY_12 Datasheet HTML 1Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 2Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 3Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 4Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 5Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 6Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 7Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 8Page - Fairchild Semiconductor SG1577SY_12 Datasheet HTML 9Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 14 page
background image
© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
SG1577 • Rev. 1.0.6
4
Pin Configuration
Figure 4. SOP-20 Pin Configuration (Top View)
Pin Definitions
Name
Pin #
Type
Description
RT
1
Frequency Select
Switching frequency programming pin. An external resistor connecting from
this pin to GND can program the switching frequency. The switching
frequency would be 60 kHz when RT is open and become 320 kHz when a
30 k
Ω RT resistor is connected.
IN1
2
Feedback
Inverting input of the error amplifier. It is normally connected to the
switching power supply output through a resistor divider.
COMP1
3
Compensation
Output of the error amplifier and input to the PWM comparator. It is used
for feedback loop compensation.
SS1/ENB
4
Soft Start/Enable
A 10 µA internal current source charging an external capacitor for soft start.
Pull down this pin and pin 17 can disable the chip.
CLP1
5
Over Current
Protection
Over-current protection for high-side MOSFET. Connect a resistor from this
pin to the high-side supply voltage to program the OCP level.
BST1
6
Boost Supply
Supply for high-side driver. Connect to the internal bootstrap circuit.
DH1
7
High-Side Drive
Channel 1, high-side MOSFET gate driver pin.
CLN1
8
Switch Node
Switch-node connection to inductor. For channel 1 high-side driver’s
reference ground.
DL1
9
Low-Side Drive
Low-side MOSFET gate driver pin.
PGND
10
Driver Ground
Driver circuit GND supply. Connect to low-side MOSFET GND.
VCC
11
Power Supply
Supply voltage input.
DL2
12
Low-Side Drive
Low-side MOSFET gate driver pin.
CLN2
13
Switch Node
Switch-node connection to inductor. For channel 2, high-side driver’s
reference ground.
DH2
14
High-Side Drive
Channel 2 high-side MOSFET gate driver pin.
BST2
15
Boost Supply
Supply for high-side driver. Connect to the internal bootstrap circuit.
CLP2
16
Over-Current
Protection
Over-current protection for the high-side MOSFET. Connect a resistor from
this pin to the high-side supply voltage to program the OCP level.
SS2/ENB
17
Soft-Start/Enable
A 10 µA internal current source charging an external capacitor for soft start.
Pull down this pin and pin 4 can disable the chip.
COMP2
18
Compensation
Output of the error amplifier and input to the PWM comparator. It is used
for feedback-loop compensation.
IN2
19
Feedback
Inverting input of the error amplifier. It is normally connected to the
switching power supply output through a resistor divider.
GND
20
Control Ground
Control circuit GND supply.


Similar Part No. - SG1577SY_12

ManufacturerPart #DatasheetDescription
logo
Fairchild Semiconductor
SG1577SY FAIRCHILD-SG1577SY Datasheet
863Kb / 15P
   Dual Synchronous DC/DC Controller
More results

Similar Description - SG1577SY_12

ManufacturerPart #DatasheetDescription
logo
Fairchild Semiconductor
SG1577A FAIRCHILD-SG1577A_10 Datasheet
856Kb / 15P
   Dual Synchronous DC/DC Controller
FAN1577A FAIRCHILD-FAN1577A Datasheet
1Mb / 15P
   Dual Synchronous DC/DC Controller
SG1577 FAIRCHILD-SG1577 Datasheet
653Kb / 14P
   Dual Synchronous DC/DC Controller
SG1577A FAIRCHILD-SG1577A Datasheet
582Kb / 15P
   Dual Synchronous DC/DC Controller
SG1577 FAIRCHILD-SG1577_10 Datasheet
863Kb / 15P
   Dual Synchronous DC/DC Controller
logo
Rohm
BD9011EKN ROHM-BD9011EKN Datasheet
442Kb / 6P
   Dual Synchronous DC/DC converter controller
BD9011KV ROHM-BD9011KV Datasheet
448Kb / 6P
   Dual Synchronous DC/DC converter controller
BD9040FV ROHM-BD9040FV Datasheet
356Kb / 6P
   Dual Synchronous DC/DC converter controller
BD9045FV ROHM-BD9045FV Datasheet
379Kb / 6P
   Dual Synchronous DC/DC converter controller
logo
Semtech Corporation
SC1189 SEMTECH-SC1189_05 Datasheet
275Kb / 16P
   Programmable Synchronous DC/DC Converter, Dual LDO Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


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