LTC1696ES6#TRMPBF Linear Technology, LTC1696ES6#TRMPBF Datasheet

IC OVERVOLT PROT CTRLR SOT23-6

LTC1696ES6#TRMPBF

Manufacturer Part Number
LTC1696ES6#TRMPBF
Description
IC OVERVOLT PROT CTRLR SOT23-6
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1696ES6#TRMPBF

Applications
Overvoltage Protection Controller
Voltage - Supply
2.7 V ~ 27 V
Current - Supply
1.1mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Input Voltage
17V
Output Voltage
24V
No. Of Outputs
1
Supply Voltage Range
2.7V To 27V
No. Of Pins
6
Operating Temperature Range
-40°C To +85°C
Msl
MSL 1 - Unlimited
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Other names
LTC1696ES6#PBF
LTC1696ES6#PBF
LTC1696ES6#TRMPBF
LTC1696ES6#TRMPBFTR

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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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LTC1696ES6#TRMPBF Summary of contents

Page 1

... 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. , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. V OUT2 5V ...

Page 2

LTC1696 ABSOLUTE AXI U RATI GS (Note 1) Supply Voltage (V ) ............................................... 28V CC Input Voltage FB1, FB2 ............................................... – 0.3V to 17V TIMER/RESET .......................................– 0.3V to 17V Operating Temperature Range (Note 2) .. – 40 ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER t OUT Propagation Delay for FB1, FB2 OVPD1,2 t OUT Rise Time r I OUT Short-Circuit Current OUTSC Note 1: Absolute Maximum Ratings are those values beyond which the ...

Page 4

LTC1696 W U TYPICAL PERFOR A CE CHARACTERISTICS Standby Supply Current vs Supply Voltage 200 180 160 140 120 100 SUPPLY VOLTAGE (V) ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS TIMER Current vs Temperature 12V FB1 AND FB2 OVERDRIVE = 200mV 14 12 FB1 OR FB2 OVERDRIVE = 200mV 10 8 –55 –35 – ...

Page 6

LTC1696 W U TYPICAL PERFOR A CE CHARACTERISTICS OUT Pin Active Output Voltage vs Supply Voltage 1000pF 7 OUT ...

Page 7

CTIO S FB1 (Pin 1): First Feedback Input. FB1 monitors and senses the first supply output voltage through an external resistor divider. This voltage is then compared with an internal reference voltage of 0.88V, which ...

Page 8

LTC1696 W BLOCK DIAGRA – GND 2 + FB1 1 + FB2 5 – BANDGAP + REFERENCE – 0.88V U U APPLICATIO S I FOR ATIO Feedback Inputs The LTC1696 has two feedback inputs that allow ...

Page 9

U U APPLICATIO S I FOR ATIO DIVIDER The nearest 1% value for R1 is 44.2k. Now, calculating for R2 yields • . ...

Page 10

LTC1696 U U APPLICATIO S I FOR ATIO Back-to-Back N-Channel MOSFET A power management circuit that uses the LTC1696 to control external back-to-back N-channel MOSFET at low supply voltage is shown in Figure 3. In standby mode, the drain of ...

Page 11

... SC-74A (EIAJ) FOR ORIGINAL JEDEC MO-193 FOR THIN 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. U ...

Page 12

... LTC1735 Synchronous Step-Down Switching Regulator LTC1922-1 Synchronous Phase Modulated Full-Bridge Controller LTC1960 Dual Battery Charger/Selector with SPI Interface PowerPath and DirectSense are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 U FB1 and FB2 pins are below the trip threshold of the internal comparator ...

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