LTC1985ES5-1.8 Linear Technology, LTC1985ES5-1.8 Datasheet - Page 8

• Manufacturer Part Number: LTC1985ES5-1.8
• Description: Micropower Precision Triple Supply Monitor with Push-Pull Reset Output in a 5-Lead SOT-23 Package
• Manufacturer: Linear Technology

RELATED PARTS
LTC1985-1.8
PACKAGE DESCRIPTIO
PART NUMBER
LTC690
LTC694-3.3
LTC699
LTC1232
LTC1326
LTC1326-2.5
LTC1536
LTC1726-25
LTC1726-5
LTC1727
LTC1728
8
TYPICAL APPLICATIO
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
(0.014 – 0.022)
DESCRIPTION
5V Supply Monitor, Watchdog Timer and Battery Backup
3.3V Supply Monitor, Watchdog Timer and Battery Backup
5V Supply Monitor and Watchdog Timer
5V Supply Monitor, Watchdog Timer and Push-Button Reset
Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ
Micropower Precision Triple Supply Monitor for 2.5V, 3.3V and ADJ
Precision Triple Supply Monitor for PCI Applications
Micropower Triple Supply Monitor for 2.5V, 3.3V and ADJ
Micropower Triple Supply Monitor for 5V, 3.3V and ADJ
Micropower Triple Supply Monitor
Micropower Triple Supply Monitor
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)
(NORMALLY OPEN)
RESET BUTTON
(0.059 – 0.069)
(0.102 – 0.118)
1.50 – 1.75
2.60 – 3.00
U
MANUAL
U
Triple Supply Monitor with Manual Reset Button
(0.004 – 0.008)
0.09 – 0.20
(NOTE 2)
Dimensions in inches (millimeters) unless otherwise noted.
*OPTIONAL RESISTOR RECOMMENDED
TO EXTEND ESD TOLERANCE
10k
5%
R3*
(0.00 – 0.006)
0.00 – 0.15
(LTC DWG # 05-08-1633)
V
5-Lead Plastic SOT-23
TRIP
FIVE PLACES (NOTE 2)
2.5V
(0.014 – 0.020)
= 2.3V
0.35 – 0.50
S5 Package
R1
130k
0.1%
R2
100k
0.1%
1.8V
100nF
(0.035 – 0.057)
(0.035 – 0.051)
3V
0.90 – 1.45
0.90 – 1.30
100nF
5
4
3
V
R1 = R2
TRIP
V
V
V
CC3
CC18
CCA
LTC1985-1.8
COMMENTS
4.65V Threshold
2.9V Threshold
4.65V Threshold
4.37V/4.62V Threshold
4.725V, 3.118V, 1V Thresholds ( 0.75%)
2.363V, 3.118V, 1V Thresholds ( 0.75%)
Meets PCI t
Adjustable RESET and Watchdog Time Outs
Adjustable RESET and Watchdog Time Outs
Individual Monitor Outputs
5-Lead SOT-23 Package
(0.110 – 0.118)
=
2.80 – 3.00
V
GND
(NOTE 3)
RST
R2
CCA
V
V
TRIP
CCA
1
2
(R1 + R2)
– 1
(0.074)
1.90
REF
FAIL
1985-18 TA02
Timing Specifications
1985i LT/TP 0300 4K • PRINTED IN THE USA
LINEAR TECHNOLOGY CORPORATION 2000
S5 SOT-23 0599
(0.037)
0.95
REF