900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Semtech

SC451 Datasheet Preview

SC451 Datasheet

Single Phase Power Supply Controller

No Preview Available !

www.DataSheet4U.com
SC451
Portable IMVP-IV™ and IMVP-IV+™
Single Phase Power Supply Controller
POWER MANAGEMENT
Description
Features
The SC451 PowerStep IV™ IC is a single chip high-perfor-
mance Hysteretic PWM controller. With its integrated
SmartDriver™, it powers advanced IMVP-IV™ and IMVP4+™
processors. The SC451 features extended Intel Mobile Volt-
age Positioning (IMVP™) to increase battery life by reduc-
ing the voltage at the processor when it is heavily loaded.
It directly supports Intel’s SpeedStep® processors for even
longer battery life. The SC451 fully supports the Intel®
Geyserville-III core voltage specification. It provides direct
“deeper sleep” mode and boot voltage support. Automatic
“power-save” is present to prevent negative current flow in
the low-side FET during light loading conditions, saving even
more power. The high side driver initially turns on with a
‹ IMVP-IV™ and IMVP-IV+™ compliant single chip
solution
‹ On chip CLK_ENABLE# and IMVP4_PWRGD outputs
‹ Backward compatible with SC1479
‹ High speed hysteretic controller
‹ Single phase operation
‹ Selectable analog or VID controlled DeeperSleep
setting
‹ 6 bit VID programmable output
‹ Integrated drivers with soft high side turn-on
‹ Programmable softstart
‹ Programmable boot voltage
weak drive to reduce ringing, EMI, and capacitive turn-on ‹ Programmable DeeperSleep voltage
of the low side.
‹ Under-voltage lock out on VccA
‹ Over-voltage protection on CORE
A 6-bit DAC, accurate to 0.85%, sets the output voltage ‹ Current limit protection on CORE
rrcviltnereeioadrgqfmseneut.rssphierTiaeetenhhrndcsaeetettbafoc,DyaburaAstirwnhCltrieedteiytsinhsptiitmosrspeosupoxacutlsteneeeassdmsrinsnbaieoalneeunrlrh.ldrttyeosrTiabrrshetnllheaeensmewthineytpo0norsila.tsit7fceterie0lerea.er0ssl,tipVsimacoinctincotadoeslned1tPhv,.W7teewo0rrhMet8meiflVoreDcinruoaareisnatmvaetpnorSsirigozdohaeel---eet‹‹‹‹4U.cTPDATooShupoemewtSteoiroOpemmnrePgsaar-o2Stl io8lpcedr,epoTfpotlSeawmScgetOoiwroPsdina-te3hvc8ebhalaaatnnnldgkigeiMhnstgLlPdoua6rdXin6g-2V8IDpaocr kage
Applications
DataShee
The SC451 operates from 5Vdc and also features soft-start, ‹ Low power Notebook and Laptop computers
an open-drain PWRGD signal with power-good blanking, ‹ Embedded Applications
and an enable input. Programmable current limiting shuts
down the SC451 after 32 current limit pulses. In addition,
it comes in a space-saving MLP 6X6-28 and TSSOP-28
package. TSSOP-38 package is also available which pro-
vides a pin to pin upgrade to a dual phase solution using
Semtech’s dual phase controller SC450.
PowerStep IV™ is a trademark of Semtech
Corporation.
Other trademarks or registered trademarks may be
claimed as the property of others.
Conceptual Application Circuit
VCCA
V5
Sm art
Driver
V IN
VCORE
0.700V -1.708V
DataSheet4U.com
V ID (5:0)
Fewbwruwa.rDya2ta, S2h0e0e5t4U.com
DataShewetw4wU.D.actaoSmheet4U.com
SC 451 Single P hase
IM VP-IV/IM VP-IV+
Pow er Supply
PWM
Contro ller
V ID Logic
and DAC
1
www.DataSheet4U.com
www.semtech.com


Part Number SC451
Description Single Phase Power Supply Controller
Maker Semtech
Total Page 1 Pages
PDF Download

SC451 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 SC450 Dual Phase Power Supply Controller
Semtech Corporation
2 SC4501 2MHz Step-Up Switching Regulator
Semtech Corporation
3 SC4502 2MHz Step-Up Switching Regulator
Semtech Corporation
4 SC4502H 2MHz Step-Up Switching Regulator
Semtech Corporation
5 SC4503 1.3MHz Step-Up Switching Regulator
Semtech Corporation
6 SC4505 High Efficiency Boost Converter
Semtech Corporation
7 SC4508 Buck or Buck-Boost Current Mode Controller
Semtech Corporation
8 SC4508A Buck or Buck-Boost Current Mode Controller
Semtech Corporation
9 SC4509 Highly Integrated Step-Up Converter
Semtech Corporation





Part Number Start With

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

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy