LDQ40PUR

$0.83

Description：Linear IC's
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a8c65cb2e172 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：Linear IC's
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：-
Output Type：-
Number of Regulators：-
Voltage - Input (Max)：-
Voltage - Output (Min/Fixed)：-
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：-
Current - Quiescent (Iq)：-
Current - Supply (Max)：-
PSRR：-
Control Features：-
Protection Features：-
Operating Temperature：-
Mounting Type：-
Package / Case：-
Supplier Device Package：-
Grade：-
Qualification：-

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LDQ40PUR

Overview

The LDQ40PUR is a high-accuracy low-dropout linear voltage regulator from STMicroelectronics, providing a guaranteed output current of 250 mA. It operates with an input voltage range from 3.3 V to 40 V and features a typical dropout voltage of 500 mV at full load. The device offers fixed output voltages (1.8 V, 2.5 V, 3.3 V, 5.0 V) or an adjustable version ranging from 1.2 V to 12 V. It includes logic-controlled electronic shutdown with standby current below 0.3 µA, internal current limit, short-circuit protection, thermal shutdown, and an active output discharge function.

Feature Summary

Logic-controlled electronic shutdown enables deep sleep mode for extended battery life in portable applications.
Integrated Power Good open-drain output monitors regulation status for system reliability.
Active output discharge function rapidly removes residual charge when disabled.
Comprehensive protection suite including internal current limiting, short-circuit protection, and thermal shutdown.

Applications

EV powertrain systems
Always-on battery connected applications
Infotainment and instrument clusters
Advanced Driver Assistance Systems (ADAS)

Procurement Notes

Verify the specific suffix 'R' indicates the standard DFN6 2x2 package without wettable flanks, distinct from automotive-grade variants. Confirm the ordering code matches the required output voltage configuration. Ensure compatibility with the manufacturer's environmental compliance standards before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high accuracy and robust protection in space-constrained environments. The DFN6 package maximizes board space efficiency while maintaining thermal performance. Consider the adjustable variant if non-standard voltage levels are necessary, utilizing external resistors for precise setting.

Part Context

Part of the LDQ40 family of 250 mA low-dropout regulators designed for industrial and automotive use. The series emphasizes low quiescent current and small footprint solutions. This specific model utilizes the standard DFN6 2x2 package, offering a balance between thermal dissipation and physical size for general-purpose regulation tasks.