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參數(shù)資料
| 型號： | SC420 |
| 廠商： | Semtech Corporation |
| 英文描述： | High Speed, Combi-SenseTM, Synchronous Power MOSFET Driver for Mobile Applications |
| 中文描述： | 高速，雜木SenseTM，同步功率MOSFET驅(qū)動器為移動應(yīng)用 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 273K |
| 代理商： | SC420 |
POWER MANAGEMENT
1
United States Patent No. 6,441,597
www.semtech.com
SC420
High Speed, Combi-Sense
TM
, Synchronous
Power MOSFET Driver for Mobile Applications
POWER MANAGEMENT
TARGET
Features
Applications
Rev 4. December 2003
The SC420 is a cost effective Dual MOSFET Driver, in-
corporating Semtech’s patented Combi-Sense
TM
technol-
ogy, designed for switching High and Low side Power
MOSFETs in Step-down Switching regulators. A 20ns 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 GND in the main and synchro-
nous MOSFETs.
High current drive capability (2A peak) allows fast
switching, thus reducing switching losses at high (up to
1.5MHz) frequencies without causing thermal stress on
the driver.
The high voltage CMOS process allows operation up to
27 Volts, making the SC420 suitable for adaptor pow-
ered applications. Under-voltage-lockout and over-tem-
perature shutdown features are included for proper and
safe operation. The SC420 is offered in a space saving
MLP-12 package.
u
High efficiency
u
Shutdown mode for increased power saving
u
Tri-state capability
u
Fast rise and fall times (15ns typical with 3000pF
load)
u
5V gate drive
u
Ultra-low (<20ns) propagation delay (BG going low)
u
Adaptive and programmable non-overlapping gate
drives provide shoot-through protection
u
Floating top drive switches up to 27V
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
u
MLP packaging provides superior thermal perfor-
mance in a small footprint
u
High efficiency portable and notebook computers
u
Battery powered applications
Description
Conceptual Application Circuit
Figure 1
VOUT
GND
PWM
FB
VIN
Combi-Sense
TM
Controller IC
CDELAY
EN
CO
VIN2
VIN
BST
TG
DRN
BG
VPN
EN
VIN2
CDELAY
RVPN
CVPN
CBST
CL
M1
M2
L1
SC420
D1
VIN
CS- CS+
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| SC4210A | 8-Pin N-FET Linear Regulator Controller |
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| SC4211EVB | Very Low Input /Very Low Dropout 1 Amp Regulator With Enable |
| SC4211STRT | Very Low Input /Very Low Dropout 1 Amp Regulator With Enable |
| SC4215_06 | Very Low Input /Very Low Dropout 2 Amp Regulator With Enable |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC4201 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Multi-Phase Link Controller |
| SC4201_04 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Multi-Phase Link Controller |
| SC420118P | 制造商:Motorola Inc 功能描述: |
| SC4201EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Multi-Phase Link Controller |
| SC4201IMSTR | 制造商:Semtech Corporation 功能描述:Multi-Phase Link Controller 8-Pin MSOP T/R |
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