EEWORLDEEWORLDEEWORLD

Part Number

Search

SC1176ATSTR

Description
SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20
CategoryPower/power management    The power supply circuit   
File Size595KB,23 Pages
ManufacturerSEMTECH
Websitehttp://www.semtech.com
Download Datasheet Parametric Compare View All

SC1176ATSTR Overview

SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20

SC1176ATSTR Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
Parts packaging codeTSSOP
package instructionTSSOP, TSSOP20,.25
Contacts20
Reach Compliance Codeunknow
ECCN codeEAR99
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage15 V
Minimum input voltage4.2 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G20
JESD-609 codee0
length6.5 mm
Number of functions1
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current15 A
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP20,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height1.2 mm
surface mountYES
Switch configurationPHASE-SHIFT
Maximum switching frequency330 kHz
Temperature levelCOMMERCIAL
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width4.4 mm
Base Number Matches1
Dual Synchronous Voltage Mode
Controller with Current Sharing Circuitry
POWER MANAGEMENT
Description
The SC1176 is a versatile 2 phase, synchronous, volt-
age mode PWM controller that may be used in two dis-
tinct ways. First, the SC1176 is ideal for applications
where point of use output power exceeds any single in-
put power budget. Alternatively, the SC1176 can be used
as a dual switcher. The SC1176 features a temperature
compensated voltage reference, over current protection
with 50% fold-back and internal level-shifted, high-side
drive circuitry.
In current sharing configuration, the SC1176 can pro-
duce a single output voltage from two separate voltage
sources (which can be different voltage levels) while
maintaining current sharing between the channels. Cur-
rent sharing is programmable to allow loading each input
supply as required by the application.
In dual switcher configuration, two feedback paths are
provided for independent control of the separate out-
puts. The device will provide a regulated output from
flexibly configured inputs (3.3V, 5V, 12V), provided 5V is
present for V
CC
. The two switchers are 180° out of phase
to minimize input and output ripple.
The SC1176A has the phases of the Master and the Slave
inverted.
It offers a different pattern for ripple cancellation and
prevents phase fold back during current limit.
The two chips are pin compatible.
SC1176/SC1176A
Features
300kHz fixed frequency operation
Soft Start and Enable function
Power Good output provided
Over current protection with 50% fold-back
Phase-shifted switchers minimize ripple
High efficiency operation, >90%
Programmable output(s) as low as .9V
Industrial temperature range
SOIC-20 or TSSOP-20 pin Lead free package. This
product is fully WEEE and RoHS compliant
Two Phase, Current Sharing Controller
Flexible, same or separate V
IN
Programmable current sharing
Combined current limit with fold-back
2 phases operating opposed for ripple reduction
Thermal distribution via multi-phase output
Two Independent PWM Controllers
Flexible, same or separate V
IN
Independent control for each channel
Independent and separate current limit
2 phases operating opposed for ripple reduction (if
same V
IN
used)
Applications
Graphics cards
DDR Memory
Peripheral add-in card
SSTL Termination
Dual-Phase power supply
Power supplies requiring two outputs
Revision: June 29, 2006
1
www.semtech.com

SC1176ATSTR Related Products

SC1176ATSTR SC1176ASWTR SC1176_06 SC1176CSWTR SC1176TSTR SC1176EVB-1 SC1176-2EVB-2
Description SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20
Is it lead-free? Contains lead Contains lead - Contains lead Contains lead - -
Is it Rohs certified? incompatible incompatible - incompatible incompatible - -
Parts packaging code TSSOP SOIC - SOIC TSSOP - -
package instruction TSSOP, TSSOP20,.25 MS-013AC, SOIC-20 - SOP, SOP20,.4 MO-153AC, TSSOP-20 - -
Contacts 20 20 - 20 20 - -
Reach Compliance Code unknow unknow - unknow unknow - -
ECCN code EAR99 EAR99 - EAR99 EAR99 - -
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER - SWITCHING CONTROLLER SWITCHING CONTROLLER - -
control mode VOLTAGE-MODE VOLTAGE-MODE - VOLTAGE-MODE VOLTAGE-MODE - -
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION PULSE WIDTH MODULATION - -
Maximum input voltage 15 V 15 V - 15 V 15 V - -
Minimum input voltage 4.2 V 4.2 V - 4.2 V 4.2 V - -
Nominal input voltage 5 V 5 V - 5 V 5 V - -
JESD-30 code R-PDSO-G20 R-PDSO-G20 - R-PDSO-G20 R-PDSO-G20 - -
JESD-609 code e0 e0 - e0 e0 - -
length 6.5 mm 12.8 mm - 12.8 mm 6.5 mm - -
Number of functions 1 1 - 1 1 - -
Number of terminals 20 20 - 20 20 - -
Maximum operating temperature 70 °C 70 °C - 70 °C 70 °C - -
Maximum output current 15 A 15 A - 15 A 15 A - -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY - -
encapsulated code TSSOP SOP - SOP TSSOP - -
Encapsulate equivalent code TSSOP20,.25 SOP20,.4 - SOP20,.4 TSSOP20,.25 - -
Package shape RECTANGULAR RECTANGULAR - RECTANGULAR RECTANGULAR - -
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE - SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH - -
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED - -
Certification status Not Qualified Not Qualified - Not Qualified Not Qualified - -
Maximum seat height 1.2 mm 2.65 mm - 2.65 mm 1.2 mm - -
surface mount YES YES - YES YES - -
Switch configuration PHASE-SHIFT PHASE-SHIFT - PHASE-SHIFT PHASE-SHIFT - -
Maximum switching frequency 330 kHz 330 kHz - 330 kHz 330 kHz - -
Temperature level COMMERCIAL COMMERCIAL - COMMERCIAL COMMERCIAL - -
Terminal surface TIN LEAD TIN LEAD - TIN LEAD TIN LEAD - -
Terminal form GULL WING GULL WING - GULL WING GULL WING - -
Terminal pitch 0.65 mm 1.27 mm - 1.27 mm 0.65 mm - -
Terminal location DUAL DUAL - DUAL DUAL - -
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED - -
width 4.4 mm 7.5 mm - 7.5 mm 4.4 mm - -
Free question, about the physical address of UART
The following is the uart chip specification ARM registers UART registers are accessible only by the ARM. ■ Block name: UART1/2/3 ? UART1: – Offset = CHIP_BASE + 0x4000; MAX = CHIP_BASE + 0x40FC ? UAR...
tclbbq Embedded System
My opinion on product encryption
Some time ago, a classmate was working on domestic replacement of encryption chips. The author has been working in the field of encryption chips for more than ten years and has accumulated some experi...
小顾2020 Domestic Chip Exchange
Recommended power management application cases
Recently, in a series of popular science articles launched by Qorvo, the power management application cases are really good.Automotive ApplicationsThe automotive power management semiconductor market ...
alan000345 Energy Infrastructure?
Downloading a large array converted from a picture to SDRAM prompts an error
Running naked on 2440, debugging a program in SDRAM. Downloading a large array converted from a picture to SDRAM, the array is unsigned short type, a total of 320×240×2 = 153600 bytes, the error messa...
ufo2007 Embedded System
How to "starve" cancer cells in the body? (Reprinted)
[color=#333333][font=Arial, simsun]Please share this document with anyone you think is important to you. I hope everyone will read it patiently. I wish the sharers and beneficiaries good health! [/fon...
xuyiyi Talking
Who has used Print()?
1602 LCD program: Print(" Duty cycle(5:5)! "); statement runs and displays. I have never seen Print() before. The C language is Printf(), but there is one less f. What is the difference between these ...
wrlsohu 51mcu

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2405  374  554  1182  2561  49  8  12  24  52 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号