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Rm 205, Radio Engineering Center, 684 Tamnip-Dong Yuseong-Gu
Daejeon, Daejeon-305510, Korea+(82)-42-9339642
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Low Dropout Regulator With Delayed Reset

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- Externally set delay for reset
- 5V/750mA output
- Very low dropout voltage 0.6V at 0.5A
- Reverse battery protection
- 60V load dump protection
- -50V reverse transient protection
- Internal thermal over load protection
- Short circuit protection
- Available in plasticTO-220
- Long delay times available
- P+ Product Enhancement tested
- Moisture Sensitivity Level 3
The LM2925 features a low dropout, high current regulator. Also included on-chip is a reset function with an externally set delay time. Upon power up, or after the detection of any error in the regulated
output, the reset pin remains in the active low state for the duration of the delay. Types of errors detected include any that cause the output to become unregu-lated: low input voltage, thermal shutdown, short circuit,input transients, etc. No external pull-up resistor is necessary. The current charging the delay capacitor is very low, allowing long delay times. Designed primarily for automotive applications, the LM2925 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as a load dump (60V) when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the 0.75A regulator will automatically shut down to protect both internal circuits and the load. The LM2925 cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.


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