LT1964ES5-BYP#TRPBF

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

The LT1964ES5-BYP#TRPBF is a micropower, low noise, low dropout negative regulator manufactured by Analog Devices Inc. It operates in the SOT-23-5 package and provides a fixed output voltage of -5V with a maximum output current of 200mA. The device features a typical dropout voltage of 340mV at full load and maintains a low quiescent current of 30μA during operation, reducing to 3μA in shutdown mode. It exhibits an output noise of 30μVRMS over a 10Hz to 100kHz bandwidth when utilizing a bypass capacitor. The component supports input voltages ranging from -20V to -2.8V and functions reliably within an operating temperature range of -40°C to +125°C.

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

• Provides low noise performance achievable through external reference bypassing
• Maintains stable regulation with small output capacitors including ceramic types
• Incorporates internal protection against reverse output polarity, current overload, and thermal stress

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

• Battery-powered instrumentation systems requiring extended operational life
• Noise-sensitive analog circuits demanding clean negative power rails
• Negative complement configurations for positive LDO families

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

Verify that the specific ordering suffix matches the required package type and lead finish specifications. Confirm that the component grade aligns with the intended environmental operating conditions. Ensure compatibility with existing board layouts regarding pin assignments and thermal requirements before finalizing procurement decisions.

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

Select this regulator for applications requiring a fixed negative voltage rail with minimal static power consumption. The BYP variant integrates internal shutdown logic tied to the input, simplifying control circuitry compared to versions with dedicated shutdown pins. Consider the thermal resistance characteristics of the SOT-23 package when designing for high ambient temperatures or continuous heavy loads.

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

This component belongs to the LT1964 family of micropower negative regulators designed for battery-operated equipment. It serves as the negative counterpart to the LT1761 positive LDO series. The ES5 designation indicates the commercial temperature grade and SOT-23-5 plastic package configuration, while the TRPBF suffix specifies tape and reel packaging with lead-free finish.

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

LT1964ES5-BYP#PBF (Tube Packaging)

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

How does the BYP pin configuration affect the shutdown functionality?

In the LT1964-BYP variant, the shutdown pin is internally connected to the input voltage. This eliminates the need for an external control signal to manage the shutdown state, as the device automatically enters shutdown when the input voltage is removed or falls below the operating threshold.

What is the minimum recommended output capacitance for stability?

The device is stable with output capacitors as low as 1μF. It can operate with aluminum, tantalum, or ceramic capacitors without requiring additional equivalent series resistance (ESR) for stability, provided the capacitance meets the minimum requirement.