LTC1696ES6 Linear Technology Corporation, LTC1696ES6 Datasheet
LTC1696ES6
Manufacturer Part Number
LTC1696ES6
Description
Manufacturer
Linear Technology Corporation
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
V
12V
CC
Low Profile (1mm) ThinSOT
Gate Drive for SCR Crowbar or External N-Channel
Disconnect MOSFET
Monitors Two Output Voltages
Senses Output Voltages from 0.8V to 24V
Wide Supply Range: 2.7V to 27V
Multifunction TIMER/RESET Pin
Telecommunication Systems
Computer Systems
Industrial Control Systems
Notebook Computers
2% Overvoltage Threshold Accuracy
2N6507
SCR
44.2k
137k
U
1%
1%
R2
R1
C2
0.1 F
1
2
3
SCR Crowbar
FB1
GND
V
CC
TM
LTC1696
SUPPLY
POWER
U
Package
TIMER/
RESET
OUT
FB2
6
5
4
1696 TA01
C1
1nF
R4
232k
1%
R3
44.2k
1%
2N7002
V
5V
V
3.3V
OUT2
OUT1
Q1
DESCRIPTIO
The LTC
monitor and protection device designed to protect a power
supply load in the event of an overvoltage fault. It monitors
two adjustable output voltages. If an overvoltage condi-
tion is detected, the output drives either an external SCR
crowbar or turns off external back-to-back N-channel
MOSFETs, thereby, disconnecting the input voltage from
the power supply.
Pin 6 offers three functions. By connecting a capacitor to
this pin, the internal glitch filter time delay can be pro-
grammed. Without the capacitor, the default time delay is
determined by an internal capacitor. This pin also serves
as a reset input to clear the internal latch after an overvolt-
age fault condition. By pulling it high, the OUT pin is
activated if the FB1 and FB2 voltages remain below the trip
threshold.
The LTC1696 is available in the low profile (1mm) ThinSOT
package.
ThinSOT is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
RESET
Overvoltage Protection
®
1696 is a standalone power supply overvoltage
TIMER/RESET
20mA/DIV
0.5V/DIV
2V/DIV
U
I
FB1
OUT
Overvoltage Response
Controller
100 s/DIV
LTC1696
C1 = 1nF
1696 TA02
1
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