Datasheet

4
LTC1156
W
IDAGRA
B
L
O
C
K
GATE CHARGE
AND DISCHARGE
CONTROL LOGIC
COMP
LOW STANDBY
CURRENT
REGULATOR
TTL-TO-CMOS
CONVERTER
100mV
REFERENCE
VOLTAGE
REGULATORS
INPUT
LATCH
OSCILLATOR
AND CHARGE
PUMP
FAST/SLOW
GATE CHARGE
LOGIC
V
S
ANALOG SECTION
IN
GND
ANALOG
DIGITAL
10µs
DELAY
GATE
DRAIN
SENSE
ONE
SHOT
R
S
1156 BD
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
SUPPLY VOLTAGE (V)
0
0
TURN-ON TIME (µs)
100
300
400
500
1000
700
5
10
1156 G07
200
800
900
600
15
20
C
GATE
= 1000pF
V
GS
= 5V
V
GS
= 2V
SUPPLY VOLTAGE (V)
0
0
TURN-OFF TIME (µs)
5
15
20
25
50
35
5
10
1156 G08
10
40
45
30
15
20
C
GATE
= 1000pF
TIME FOR V
GATE
< 1V
SUPPLY VOLTAGE (V)
0
0
TURN-OFF TIME (µs)
5
15
20
25
50
35
5
10
1156 G09
10
40
45
30
15
20
C
GATE
= 1000pF
TIME FOR V
GATE
< 1V
V
SEN
= V
S
– 1V
NO EXTERNAL DELAY
Short Circuit Turn-OFF Delay TimeTurn-OFF Time
Turn-ON Time
U
ATIOOPER
The LTC1156 contains four independent power MOSFET
gate drivers and protection circuits (refer to the Block
Diagram for detail). Each section of LTC1156 consists of
the following functional blocks:
TTL and CMOS Compatible Inputs
Each driver input has been designed to accommodate a
wide range of logic families. The input threshold is set at
1.3V with approximately 100mV of hysteresis.