Texas Instruments LM337KCSE3 Adjustable Negative Voltage Regulator TO-220

The Texas Instruments LM337KCSE3 Adjustable Negative Voltage Regulator supplies in excess of 1.5 A across an adjustable output range of -1.2 V to -37 V. It is a 3-terminal linear regulator designed to provide a stable negative power supply for electronic circuits.

Overview

The LM337KCSE3 is intended for designing and stabilising negative voltage rails in a variety of electronic circuits. Its adjustable output voltage range of -1.2 V to -37 V makes it suitable for applications that require a variable negative supply, and its specified input voltage range is -40 V to -3 V.

Ease of Use

The regulator requires only two external resistors to set the precise output voltage, together with a single non-ceramic output capacitor for frequency compensation. This arrangement minimises the number of components required and simplifies board layout.

Regulation and Performance

The device offers 0.01% line regulation and 0.3% load regulation, which helps maintain a consistent output despite variations in input voltage or load current. Its peak output current remains constant over the full operating temperature range of 0°C to 125°C, and its typical ripple rejection of 77 dB helps filter noise and ripple from the input supply.

Package and Mounting

The LM337KCSE3 is supplied in a TO-220 through-hole package with three pins, designed for straightforward mounting and efficient thermal dissipation in demanding applications. Dimensions are 43 mm x 33 mm x 15 mm (H x W x D).

Key Specifications

• Output Type: Adjustable Negative
• Maximum Output Current: 1.5 A
• Output Voltage Range: -1.2 V to -37 V
• Input Voltage Range: -40 V to -3 V
• Typical Ripple Rejection: 77 dB

Select the Texas Instruments LM337KCSE3 Adjustable Negative Voltage Regulator when a 1.5 A negative linear regulator with an adjustable output between -1.2 V and -37 V is required for a circuit design.