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SC1205CS 参数 Datasheet PDF下载

SC1205CS图片预览
型号: SC1205CS
PDF下载: 下载PDF文件 查看货源
内容描述: 高速同步功率MOSFET驱动器 [HIGH SPEED SYNCHRONOUS POWER MOSFET DRIVER]
分类和应用: 驱动器
文件页数/大小: 12 页 / 130 K
品牌: SEMTECH [ SEMTECH CORPORATION ]
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HIGH SPEED SYNCHRONOUS POWER
MOSFET DRIVER
PRELIMINARY - December 7, 1999
SC1205
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1205 is a cost effective Dual MOSFET Driver
designed for switching High and Low side Power
MOSFETs. Each driver is capable of driving a
3000pF load in 20ns rise/fall time and has a 20ns max
propagation delay from input transition to the gate of
the power FET’s. An internal Overlap Protection Cir-
cuit prevents shoot-through from Vin to GND in the
main switching and synchronous MOSFET’s. The
Overlap Protection circuit ensures the Bottom FET
does not turn on until the Top FET source has reached
a voltage low enough to prevent cross-conduction.
The high current drive capability (2A peak) allows fast
switching, thus reducing switching losses at high
(1MHz) PWM frequencies. The high voltage CMOS
process allows operation from 5-25 Volts at top MOS-
FET drain, thus making SC1205 suitable for battery
powered applications. Connecting Enable pin (EN) to
logic low shuts down both drives and reduces operat-
ing current to less than 10uA.
An Under-Voltage-Lock-Out circuit is included to guar-
antee that both driver outputs are low when the 5V
logic level is less than or equal to 4.4V (typ) at supply
ramp up (4.35V at supply ramp down). An Internal
temperature sensor shuts down all drives in the event
of overtemperature. SC1205 is fabricated utilizing
CMOS technology for low quiescent current. The
SC1205 is offered in a standard SO-8 package.
FEATURES
Fast rise and fall times (15ns typical with 3000pf
load)
2Amp peak drive current
14ns max Propagation delay (BG going low)
Adaptive Non-overlapping Gate Drives provide
shoot-through protection
Floating top drive switches up to 25V
Under-Voltage lock-out
Overtemperature protection
Less than 10uA supply current when EN is low
Low cost
APPLICATIONS
High Density sunchronous power supplies
Motor Drives/Class-D amps/Half bridge drivers
High frequency (to 1.2 MHz) operation allows use
of small inductors and low cost caps in place of
electrolytics
Portable computers
Battery powered applications
ORDERING INFORMATION
DEVICE
(1)
PACKAGE
SO-8
TEMP. RANGE (T
J
)
0 - 125°C
SC1205CS
Note:
(1) Add suffix ‘TR’ for tape and reel.
PIN CONFIGURATION
BLOCK DIAGRAM
Top View
(SO-8)
1
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320