Siemens 5-V Low-Drop Voltage Regulator TLE 4261-2 User Manual
Summary
A highly reliable 5V low-drop voltage regulator designed for robust power management in demanding circuits. This device offers high accuracy, integrated protection against overvoltage, short circuits, and temperature extremes, alongside a comprehensive watchdog circuit ideal for monitoring sensitive microprocessors. The manual provides detailed system specifications, including reset delay configuration, circuit design notes, and multiple packaging options (TO-220/DSO). It is essential reading for hardware engineers and embedded developers building reliable systems, particularly those requiring anti-reverse polarity and automotive-grade stability.
Page 1 Text Content
5-V Low-Drop Voltage Regulator TLE 4261-2
Features High accuracy 5 V ± 2% Very low-drop voltage Very low quiescent current Low starting-current consumption Proof against reverse polarity Input voltage up to 42 V Overvoltage protection up to 65 V (≤ 400 ms)
P-TO220-7-1
Short-circuit-proof External setting of reset delay Integrated watchdog circuit Wide temperature range Overtemperature protection Suitable for automotive use EMC proofed (100 V/m)
Type Ordering Code Package
P-DSO-20-6
TLE 4261-2 Q67000-A9110 P-TO220-7-1 TLE 4261-2 Q67000-A9140 P-DSO-20-6
(SMD)
TLE 4261-2 GL Q67006-A9193 P-TO220-7-8
(SMD)
▼ Please also refer to the new pin compatible device TLE
P-TO220-7-8
Functional Description TLE 4261-2 is a high accuracy 5-V low-drop voltage regulator in a P-TO220-7 or in a P- DSO package. The maximum input voltage is 42 V (65 V/≤ ms). The device can produce an output current of more than 500 m A. It is short-circuit-proof and incorporates temperature protection that disables the circuit at impermissibly high temperatures.
Semiconductor Group 1998-11-01
Page Summary Contents For Siemens 5-V Low-Drop Voltage Regulator TLE 4261-2 User Manual
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 18 |
| File Size | 141.65 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What is the guaranteed stable operating voltage range?
The device regulates an input V in the range 6V < V < 40V, producing a precise 5.0 V output.
Are external components necessary for stability?
Yes, the output capacitor must be a minimum of 22 mF with an ESR max of 3 W.
How does the regulator detect microprocessor failure?
The integrated watchdog circuit monitors connected pulses and will trigger a reset signal if any are missed.
What pins control the operational status or timing?
Pin 2 (INH) allows switching off the IC, while Pin 5 (DRES) controls the external reset delay.