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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 200MA 6-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：22V
- Voltage Dropout (Max)：1V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：500 µA
- PSRR：70dB ~ 65dB (1kHz)
- Control Features：Current Limit, Enable, Power Good
- Protection Features：Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：6-WDFN Exposed Pad
- Supplier Device Package：6-DFN (2x2)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LDH40PURY is a high-accuracy, adjustable low dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. Designed for automotive and industrial environments, it supports an input voltage range from 3.3 V to 40 V, enabling compatibility with battery systems and load dump transients. The device delivers a guaranteed output current of 200 mA with an adjustable output voltage range spanning 1.2 V to 22 V. It features ultra-low quiescent current of 200 µA at no load and maintains a typical dropout voltage of 700 mV. Qualified under AEC-Q100 Grade 1 standards, it operates within a junction temperature range of -40 °C to +150 °C and includes internal protections such as thermal shutdown and current limiting.
Feature Summary
- High accuracy voltage regulation with 0.5% tolerance at 25 °C
- Extended input voltage capability up to 40 V for automotive load dump support
- Ultra-low ground current enhances battery lifetime in always-on standby systems
- Logic-controlled electronic shutdown reduces total consumption below 0.3 µA
Applications
- Automotive applications requiring direct connection to car batteries
- Industrial applications involving generic battery connections
- Always-on standby systems prioritizing battery operation lifetime
Procurement Notes
Verify the specific suffix 'PURY' corresponds to the DFN-6 package with wettable flanks and automotive grade qualification. Confirm that the order quantity aligns with the manufacturer's reel specifications. Ensure the design accounts for the required small ceramic capacitors on both input and output terminals for stability. Validate that the application environment remains within the specified -40 °C to +150 °C operating temperature range.
Selection Notes
Select this component when designing for automotive systems exposed to high transient voltages up to 40 V. It is suitable for space-constrained PCB designs due to its compact DFN footprint. Choose this regulator if the application demands minimal static power consumption during standby modes. Ensure the load requirements do not exceed the 200 mA continuous output current limit.
Part Context
This part belongs to the LDH40 family of low dropout regulators. It shares the core architecture with other variants but is distinguished by its adjustable output voltage configuration and specific packaging. The family is engineered to provide robust performance in harsh electrical environments while maintaining high precision.
Replacement Considerations
LDL40PURY: Offers similar form factor but limited to 12 V output. LDQ40PURY: Provides comparable performance with slight variations in output current ratings.
