Siemens TLE 4274 Low-Drop Voltage Regulator Data Sheet/Manual
Summary
The TLE 4274 is a highly reliable, low-drop voltage regulator designed for critical applications, particularly in automotive electronics. It ensures robust power stability by managing inputs up to 40V while offering vital protections against short circuits, reverse polarity, and overtemperature. This manual serves as a comprehensive guide for engineers, detailing its technical specifications, operational characteristics (including load regulation), application circuitry diagrams, and dimensional data across various packages (TO220/TO252/TO263). Use this resource to ensure optimal system design and flawless power management in demanding environments.
Page 1 Text Content
Low-Drop Voltage Regulator TLE 4274
Features Output voltage tolerance ≤ ± 4 % Low-drop voltage Very low current consumption Short-circuit proof Reverse polarity proof Suitable for use in automotive electronics
P-TO220-3-1
Type Ordering Code Package TLE 4274 V10 Q67000-A9258 P-TO220-3-1 TLE 4274 V85 Q67000-A9257 P-TO220-3-1 TLE 4274 V50 Q67000-A9256 P-TO220-3-1 TLE 4274 D V50 Q67006-A9331 P-TO252-3-1 TLE 4274 G V10 Q67006-A9261 P-TO263-3-1 TLE 4274 G V50 Q67006-A9259 P-TO263-3-1
P-TO252-3-1
TLE 4274 G V85 Q67006-A9260 P-TO263-3-1
SMD = Surface Mounted Device
Functional Description The TLE 4274 is a low-drop voltage regulator in a TO220 package. The IC regulates an input voltage up
to 40 V to VQrated 5.0 V (V50), 8.5 V (V85) and 10
(V10). The maximum output current is 400 m A. The IC is short-circuit proof and incorporates temperature
P-TO263-3-1
protection that disables the IC at over temperature. Dimensioning Information on External Components The input capacitor CI is necessary for compensating line influences. Using a resistor of approx. 1 Ω in series with CI, the oscillating of input inductivity and input capacitance can be damped. The output capacitor CQ is necessary for the stability of the regulation circuit.
Stability is guaranteed at values CQ µF and an ESR of Ω within the operating
temperature range.
Semiconductor Group 1998-11-01
Page Summary Contents For Siemens TLE 4274 Low-Drop Voltage Regulator Data Sheet/Manual
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 13 |
| File Size | 91.84 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
What is the maximum output current for this regulator?
The maximum output current is 400 mA.
Is the TLE 4274 suitable for automotive use?
Yes, it is explicitly stated as suitable for use in automotive electronics and features low-drop voltage technology.
What components are required for proper installation?
The input capacitor C is necessary to compensate line influences; optionally, a 1W resistor in series with C helps damp oscillations.
Does the device offer protection against failures?
Yes, it incorporates built-in protections against overload, overtemperature, and reverse polarity. It is also short-circuit proof.