TK75050 Datasheet, PDF (1/12 Pages) TOKO, Inc – SMART MOSFET DRIVER

TK75050
SMART MOSFET DRIVER
FEATURES
s 20 ns Rise and Fall Times into 1000 pF
s 550 µA Standby Current Consumption
s Undervoltage Lockout Combined with First Pulse
Wake-Up Feature *
s Cycle-by-Cycle Current Limiting
s Current Sense Voltage Spike Cancellation when
Used with Gate Charge Recovery Circuit *
s Thermal Overload Protection
s TTL/CMOS Compatible Input
DESCRIPTION
APPLICATIONS
s Driving of Power MOSFETs and IGBTs
s Switch Mode Power Supplies
s Step Motor Drivers
s Solenoid Drivers
The TK75050 is a non-inverting buffer to drive high power
insulated gate transistors (e.g., MOSFETs and IGBTs).
The output can source or sink 2 A into a 10,000 pF
equivalent load. The IC features built-in cycle-by-cycle
current limiting. Its Undervoltage Lockout (UVLO) circuit is
combined with a First Pulse Wake-up Feature*. The chip
has thermal overload protection. Using the IC in the Gate
Charge Recovery* application, the switching spike
developed across the current sense resistor practically
becomes negligible. Due to its low standby current and
first-pulse wake-up feature, the device can be used in self-
biased power supplies. The IC's high-speed cycle-by-
cycle current limiting capability eliminates the short circuit
runaway problem which characterizes most current-
controlled converters. The IC is well suited to provide
supplementary overload protection in voltage-controlled
converters, too. The TK75050 is available in the widely
used 8-pin DIP package.
*Toko proprietary feature: See "Application Information" section.
TK75050
75050
PGND/CS
GND
GND
OUTPUT
INPUT
GND
GND
VCC
BLOCK DIAGRAM
ORDERING INFORMATION
TK75050D
Tape/Reel Code
Temperature Code
PACKAGE CODE EXTENDED TEMP. RANGE TAPE/REEL CODE
D: DIP-8
I: -40 TO +85 C
TL: Tape Left
INPUT
1.6/1.0 V
GND
T
155/80 °C
UVLO
STARTUP
R
Q
S
11/10 V
EN
BIAS
EN
OVERLOAD
R
SQ
CURRENT
OVERLOAD
THERMAL
OVERLOAD
1.0/0.9 V
VCC
OUTPUT
PGND/CS
January 1999 TOKO, Inc.
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