What are the primary applications for this device?

It is primarily used for powering operational amplifiers, wireless communication systems, headphone amplifiers, and data converters where low noise and low ripple are critical.

What are the key performance features?

Key features include a 2 MHz fixed switching frequency, 250 mA output current capability, 35 dB PSRR at 2 MHz, and a low shutdown current of 7 µA.

What should engineers consider during design?

Engineers must prioritize PCB layout, specifically placing input and output capacitors close to the device pins to reduce inductive spikes and noise. The thermal pad must be soldered to the ground plane for proper heat dissipation.

What is the sourcing status of the LM27761?

The LM27761 is currently in active production with high availability, making it a reliable choice for long-term designs.

What is the pinout of LM27761DSGR?

Use the LM27761DSGR datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about LM27761DSGR pinout to locate pins, power rails, and interface signals before layout.

LM27761DSGR Datasheet, Specs, Alternatives & ECAD | Texas Instruments

AI summary

The LM27761 is a high-efficiency, low-noise regulated charge-pump inverter with an integrated LDO, ideal for generating clean negative supply rails in noise-sensitive applications.

Best for

Audio signal chains
Precision instrumentation
Battery-powered portable devices

Avoid if

Applications requiring output currents exceeding 250 mA
Designs where space constraints prevent the use of four external capacitors

Check before use

Ensure the input voltage is within the 2.7 V to 5.5 V range and that the chosen external resistors for VOUT setting are at least 50 kΩ.

Key specifications

Input Voltage: 2.7 V to 5.5 V
Output Voltage: -1.5 V to -5 V
Max Output Current: 250 mA
Switching Frequency: 2 MHz

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: -
MSL: Level-2-260C-1 YEAR
ECCN: -
HTSUS: -

Application

PowerConsumerGeneral

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The LM27761 is a low-noise, regulated switched-capacitor voltage inverter that converts a positive input voltage (2.7 V to 5.5 V) into an adjustable negative output voltage (-1.5 V to -5 V).

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the LM27761?+×

What are the primary applications for this device?+×

What are the key performance features?+×

What should engineers consider during design?+×

What is the sourcing status of the LM27761?+×

What is the pinout of LM27761DSGR?+×