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Application Note
Reliability Data
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Features
- ±2% Overvoltage Threshold Accuracy
- Low Profile (1mm) ThinSOTTM Package
- 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
Typical Application
Description
The LTC®1696 is a standalone power supply overvoltage 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 condition 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 programmed. 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 overvoltage 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.
SOT-23
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1696IS6#TRPBF | SOT | 6 | I | $2.69 | $1.88 |
| LTC1696IS6#TRMPBF | SOT | 6 | I | $2.69 | $1.93 |
| LTC1696ES6#PBF | SOT | 6 | E | $2.07 | |
| LTC1696ES6#TRMPBF | SOT | 6 | E | $2.07 | $1.78 |
| LTC1696ES6#TRPBF | SOT | 6 | E | $2.07 | $1.76 |
| LTC1696HS6#TRMPBF | SOT | 6 | H | $3.11 | $2.23 |
| LTC1696IS6#PBF | SOT | 6 | I | $2.69 | |
| LTC1696HS6#TRPBF | SOT | 6 | H | $3.11 | $2.18 |
| LTC1696HS6#PBF | SOT | 6 | H | $3.11 | |
| LTC1696ES6 | SOT | 6 | E | $4.14 | |
| LTC1696ES6#TR | SOT | 6 | E | $4.14 | $3.52 |
| LTC1696ES6#TRM | SOT | 6 | E | $4.14 | $3.56 |
| LTC1696IS6 | SOT | 6 | I | $5.38 | |
| LTC1696IS6#TR | SOT | 6 | I | $5.38 | $3.76 |
| LTC1696IS6#TRM | SOT | 6 | I | $5.38 | $3.86 |
| LTC1696HS6#TR | SOT | 6 | H | $6.22 | $4.36 |
| LTC1696HS6#TRM | SOT | 6 | H | $6.22 | $4.46 |
| LTC1696HS6 | SOT | 6 | H | $6.22 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.