TLE4276GVATMA1

Current - Output:	400mA
Base Part Number:	TLE4276
Supplier Device Package:	P-TO220-5-122
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	Inhibit
PSRR:	54dB (100Hz)
Current - Supply (Max):	25mA
Current - Quiescent (Iq):	200µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.5V @ 250mA
Voltage - Output (Max):	20V
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	40V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Introduction

The TLE4276GVATMA1 is a Voltage Regulator of the Intelligent Power Module - Linear (IPM - Linear) family, produced by Infineon Technologies, and is a flexible, low-quiescent-current, step-down dc-dc converter that operates from 4.5V to 38V input voltage range, and offers a wide output voltage range from 0.6V to the dc input voltage with high efficiency. The device also provides adjustable current limiting, internal short-circuit protection and adjustable maximum switching frequency.

Features

The feature-rich TLE4276GVATMA1 offers a wide range of functionalities such as:

• Broad range of support from 4.5 V to 38V input
• High efficiency throughout the load range
• Integrated loop compensation
• Internal current limit protection
• External output voltage trimming
• Ultra-low quiescent current of < 0.42mA
• High-frequency operation up to 500KHz
• Integrated output disconnect for power-saving modes

The TLE4276GVATMA1 can easily achieve high efficiency levels, by utilizing a unique modulation technique with very low frequency ripple, making it ideal for energy-sensitive applications.

Application Fields

The TLE4276GVATMA1 is well suited for applications in a wide range of industries, including:

• Automotive and Industrial Controls
• Telecommunication
• Consumer Electronics
• Computer Peripherals

Its high power density and very tight load regulation makes it suitable for a range of applications, including DC-DC converters and on-board battery charging systems. It is also used in electronic wall-mounted controllers, LED lighting applications and LED display systems.

Working Principle

The TLE4276GVATMA1 is a DC-DC converter. It operates in 3 stages:

• Input voltage regulation
• Switch regulation and output voltage regulation
• Current regulation

In stage 1, the device is responsible for maintaining input voltage within the specified range and for preventing the input voltage from exceeding the maximum specified rating. In this stage, the device compensates for variations in the input voltage, and can quickly respond to dynamic changes in the input voltage.In stage 2, the device’s switching frequency is regulated to maintain an output voltage that is within the specified range. This is done by controlling the duty cycle of the switching circuit, and the output voltage is further regulated by an internal loop compensation circuit. In stage 3, the TLE4276GVATMA1 has built-in protection circuits to protect against an output over-current and short-circuit condition. When the output current reaches the specified current limit, the circuit will shut down and disable the regulator, preventing damage to the system.

Conclusion

The TLE4276GVATMA1 from Infineon Technologies is a highly flexible, efficient, step-down DC-DC converter that operates from 4.5V to 38V input voltage range, and with an output voltage range from 0.6V to the DC input voltage. This module is suitable for a wide range of applications due to its high power density, tight load regulation and low quiescent current. It also includes integrated protection mechanisms and can easily achieve high efficiency levels.

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