datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf





Semtech Corporation
Semtech Corporation

SC1211 Datasheet Preview

SC1211 Datasheet

Combi-SenseTM Synchronous MOSFET Driver

No Preview Available !

SC1211 pdf
www.DataSheet4U.com
POWER MANAGEMENT
Description
SC1211
High Speed, Combi-SenseTM
Synchronous MOSFET Driver
Features
The SC1211 is a high speed, Combi-SenseTM, dual out-
put driver designed to drive high-side and low-side
MOSFETs in a synchronous Buck converter. These
drivers combined with Combi-Sense PWM controllers,
such as Semtech SC2643VX or SC2643, provide a
cost effective multi-phase voltage regulator for advanced
microprocessors
The Combi-SenseTM is a technique to sense the inductor
current for peak current mode control of voltage regula-
tor without using sensing resistor. It provides the follow-
ing advantages:
- No costly precision sensing resistor
- Lossless current sensing
- High level noise free signal
- Fast response
- Suitable for wide range of duty cycle
- Only two small signal components (third optional)
The detailed explanation of the technique can be found
in the Applications Information section.
u High efficiency
u +12V supply voltage with internal LDO for optimum
gate drive
u High peak drive current
u Adaptive non-overlapping gate drives provide
shoot-through protection
u Support Combi-SenseTM and VID-on-fly operations
u Fast rise and fall times (15ns typical with 3000pf
load)
u Ultra-low (<30ns) propagation delay (BG going low)
u Floating top gate drive
u Crowbar function for over voltage protection
u High frequency (to 1.5 MHz) operation allows use
of small inductors and low cost ceramic capacitors
u Under-voltage-lockout
u Low quiescent current
A 30ns max propagation delay from input transition to
the gate of the power FET’s guarantees operation at high
switching frequencies. Internal overlap protection circuit
prevents shoot-through from Vin to PGND in the main
and synchronous MOSFETs. The adaptive overlap pro-
tection circuit ensures the bottom FET does not turn on
until the top FET source has reached 1V, to prevent cross-
conduction.
Applications
u Intel PentiumTM processor power supplies
u AMD AthlonTM and K8TM processor power supplies
u High current low voltage DC-DC converters
8.5V gate drive provides optimum enhancement of
MOSFETs at minimum driver and MOSFET switching loss.
High current drive capability allows fast switching, thus
reducing switching losses at high (up to 1.5MHz) frequen-
cies without causing thermal stress on the driver.
Under-voltage-lockout and over-temperature shutdown
features are included for proper and safe operation.
Timed latches and improved robustness are built into
the housekeeping functions such as the Under Voltage
Lockout and adaptive Shoot-through protection circuitry
to prevent false triggering and to assure safe operation.
The SC1211 is offered in a Power SOIC-8L package.
February 24, 2003
1 www.semtech.com



Semtech Corporation
Semtech Corporation

SC1211 Datasheet Preview

SC1211 Datasheet

Combi-SenseTM Synchronous MOSFET Driver

No Preview Available !

SC1211 pdf
POWER MANAGEMENT
Typical Application Circuit
SC1211
222
111
1
DRN
2 TG
3 BST
4 CO
BG
VREG
VIN
VPN
8
7
6
5
1
DRN
2 TG
3 BST
4 CO
BG
VREG
VIN
VPN
8
7
6
5
1
DRN
2 TG
3 BST
4 CO
BG
VREG
VIN
VPN
8
7
6
5
2
1
© 2003 Semtech Corp.
2
www.semtech.com


Part Number SC1211
Description Combi-SenseTM Synchronous MOSFET Driver
Maker Semtech Corporation
Total Page 11 Pages
PDF Download
SC1211 pdf
SC1211 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 SC1210 High Speed- 12V/ Synchronous Power MOSFET Driver Semtech
Semtech
SC1210 pdf
2 SC1211 Combi-SenseTM Synchronous MOSFET Driver Semtech Corporation
Semtech Corporation
SC1211 pdf
3 SC1211VX High Speed - Combi-Sense - Synchronous MOSFET Driver for Mobile Applications Semtech
Semtech
SC1211VX pdf
4 SC1214 High Speed - Combi-Sense Two-Phase - Synchronous MOSFET Driver Semtech
Semtech
SC1214 pdf
5 SC1218 High Speed Synchronous MOSFET Driver Semtech
Semtech
SC1218 pdf





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