LTC1982 Linear Technology, LTC1982 Datasheet - Page 3

• Manufacturer Part Number: LTC1982
• Description: (LTC1981 / LTC1982) Single and Dual Micropower High Side Switch Controllers
• Manufacturer: Linear Technology

temperature range, otherwise specifications are at T
(LTC1981 only)
ELECTRICAL CHARACTERISTICS
SYMBOL
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to GND.
TYPICAL PERFOR A CE CHARACTERISTICS
OL
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8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.5
GATE Drive Voltage vs Supply
Voltage
T
A
= 25 C
2.0
PARAMETER
GDR Output Voltage Low
GATE Drive Ready Trip Point
GDR Hysteresis
GDR Delay
(V
GS
SUPPLY VOLTAGE, V
2.5
GATE DRIVE –V
SOURCE FOLLOWER)
3.0
(V
GATE DRIVE VOLTAGE
GS
60
50
40
30
20
10
0
3.5
COMMON SOURCE)
0
I
SUPPLY
T
V
SHDN1 TIED
TO SHDN2
A
CC
CC
4.0
= 25 C
= 3V
SHDN LOGIC INPUT VOLTAGE (V)
CC
4.5 5.0
(V)
W
1982 G01
U
5.5
1
CONDITIONS
I
GATE Voltage Rising
V
V
V
V
GATE Voltage Falling
After GATE is Above the GDR Trip Threshold
10k Pull-Up to V
SINK
CC
CC
CC
CC
= 1.8V
= 2.7V
= 3.3V
= 5V
= 100 A, V
20
15
10
25
0
5
1981/82 G04
A
1.0
Supply Current vs Supply Voltage
= 25 C. V
T
A
1.5
= 25 C
2
CC
The
CC
2.0
= 1.8V
SUPPLY VOLTAGE (V)
2.5
CC
denotes the specifications which apply over the full operating
= 5V unless otherwise specified. C
EITHER CHANNEL ON
BOTH CHANNELS ON
3.0 3.5
Note 3: the LTC1982E is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the –40 C to 85 C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 4: Guaranteed by design not subject to test.
LTC1981 OR
LTC1982
LTC1982
4.0 4.5 5.0
300
250
200
150
100
50
0
0
I
1982 G02
SUPPLY
T
V
SHDN1 TIED
TO SHDN2
A
CC
= 25 C
5.5
= 5V
SHDN LOGIC INPUT VOLTAGE (V)
LTC1981/LTC1982
100
0.1
10
1
1
GATE Drive Current (LTC1982)
0
T
GATE 1
A
3.85
5.78
6.17
6.17
MIN
V
= 25 C
CC
1
V
CC
= 2.7V
= C
GATE DRIVE VOLTAGE (V)
= 3.3V
2
V
CC
GATE 2
0.05
4.05
6.08
TYP
1981/82 G05
= 1.8V
6.5
6.5
3
2
2
4
2
= C
GATE
MAX
4.25
6.38
6.82
6.82
5
0.4
= 1000pF.
6
V
CC
UNITS
7
1982 G03
= 5V
3
%
V
V
V
V
V
8
s