S-19251C35H-M5T1U4

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The S-19251C35H-M5T1U4 is an automotive-grade positive voltage regulator from the S-19251 Series, manufactured by ABLIC Inc. using CMOS technology. It provides a fixed output voltage of 3.5 V with ±2.5% accuracy across a junction temperature range of −40°C to +105°C. The device supports a maximum input voltage of 5.5 V and delivers up to 150 mA of output current. Key electrical characteristics include a typical operating current consumption of 20 μA, a dropout voltage of 0.16 V at 100 mA, and high ripple rejection of 70 dB typ. at 1.0 kHz. It features built-in overcurrent protection and thermal shutdown circuits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Built-in ON/OFF control circuit for battery life extension
• Integrated discharge shunt function unavailable
• Internal pull-down resistor available on ON/OFF pin
• High ripple rejection capability

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive meters
• Car body electronics
• Headlight systems
• ITS (Intelligent Transport Systems)
• Car navigation systems

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific product type 'C' configuration, which lacks discharge shunt but includes a pull-down resistor, against system requirements. Confirm the SOT-23-5 package designation matches the PCB footprint. Ensure the application environment stays within the specified -40°C to +105°C operating temperature range for guaranteed performance.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.5 V output is required for automotive applications. The C-type variant is suitable if internal pull-down functionality is desired while discharge shunt is unnecessary. Verify that external ceramic capacitors of 1.0 μF or more are used for stability. Consider thermal dissipation limits if operating near maximum load currents.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the S-19251 Series, designed for automotive use with 105°C operation capability. It utilizes a P-channel MOSFET output transistor. The series offers various packages including SOT-23-5 and HSNT-4 variants. It is AEC-Q100 qualified for grade 2 reliability standards.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

S-19251A35H-M5T1U4

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the behavior of the ON/OFF pin in the S-19251C series?

In the S-19251C series, the ON/OFF pin has an internal pull-down resistor. When floating, it sets the output to the VSS level.

Does the S-19251C35H-M5T1U4 have a discharge shunt function?

No, the S-19251C series does not have a built-in discharge shunt function. The output voltage decreases through internal divided resistors when turned off.