LTC1982 Linear Technology, LTC1982 Datasheet - Page 7

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

APPLICATIONS
Reverse Battery Protection
The LTC1981/LTC1982 can be protected against reverse
battery conditions by connecting a 150 resistor in series
with the supply pin as shown in Figure 4. The resistor
limits the supply current to less than 24mA with –3.6V
applied. Because the LTC1981/LTC1982 draw very little
current while in normal operation, the drop across the
resistor is minimal. Control logic can be protected by
adding 10k resistors in series with the input pins.
PACKAGE DESCRIPTIO
www.DataSheet4U.com
(0.014 – 0.022)
(0.014 – 0.022)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.35 – 0.55
0.35 – 0.55
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
U
INFORMATION
U
(0.059 – 0.069)
(0.059 – 0.069)
(0.102 – 0.118)
(0.110 – 0.118)
1.50 – 1.75
1.50 – 1.75
2.60 – 3.00
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
2.6 – 3.0
W
(0.004 – 0.008)
(0.004 – 0.008)
U
0.09 – 0.20
0.09 – 0.20
(NOTE 2)
(NOTE 2)
Dimensions in inches (millimeters) unless otherwise noted.
(0.00 – 0.006)
0.00 – 0.15
(0.00 – 0.006)
U
0.00 – 0.15
FIVE PLACES (NOTE 2)
6-Lead Plastic SOT-23
(LTC DWG # 05-08-1634)
(LTC DWG # 05-08-1633)
5-Lead Plastic SOT-23
SIX PLACES (NOTE 2)
(0.014 – 0.020)
0.35 – 0.50
(0.014 – 0.020)
S6 Package
0.35 – 0.50
S5 Package
(0.035 – 0.057)
(0.035 – 0.051)
0.90 – 1.45
0.90 – 1.30
(0.035 – 0.057)
(0.035 – 0.051)
0.90 – 1.45
0.90 – 1.30
READY
DRIVE
GATE
3V
Figure 4. Reverse Battery Protection
10k
(0.074)
1.90
REF
(0.074)
1.90
REF
3
1
2
LTC1981/LTC1982
GDR
GND
SHDN
0.1 F
10k
LTC1981
(0.037)
0.95
REF
(0.037)
(0.110 – 0.118)
0.95
REF
2.80 – 3.00
(0.110 – 0.118)
GATE
(NOTE 3)
V
2.80 – 3.00
(NOTE 3)
CC
S5 SOT-23 0599
S6 SOT-23 0898
5
4
150
(1.8V TO 5V)
V
LOAD
BAT
Si3442DV
1981/82 F04
7