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LM27761DSGR

Charge inverting pump designed to produce voltage levels from -1.5V to -5V, with a current output of 0.25mA in a 8-pin WSON EP package

Manufacturer:

Texas Instruments
Mfr.Part #:

LM27761DSGR
Datasheet:

LM27761DSGR Datasheet (PDF)
Function:

Step-Up/Step-Down
Output Configuration:

Negative
Topology:

Charge Pump
Output Type:

Adjustable
EDA/CAD Models:

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LM27761DSGR General Description

The LM27761 low-noise regulated switched-capacitor voltage inverter delivers a very low-noise adjustable output for an input voltage in the range of 2.7 V to 5.5 V. Four low-cost capacitors are used in the application solution to provide up to 250 mA of output current. The regulated output for the device is adjustable between −1.5 V and −5 V. The LM27761 operates at 2-MHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 370 µA (charge-pump power efficiency greater than 80% with most loads) and 7-µA typical shutdown current, the LM27761 provides ideal performance when driving power amplifiers, DAC bias rails, and other high-current, low-noise voltage applications.

Key Features

Inverts and Regulates the Input Supply Voltage
Low Output Ripple
Shutdown Lowers Quiescent Current to 7 µA (Typical)
Up to 250-mA Output Current
2.5-Ω Inverter Output Impedance, V_IN = 5 V
±4% Regulation at Peak Load
370-µA Quiescent Current
2-MHz (Typical) Low-Noise Fixed-Frequency Operation
35-dB (Typical) LDO PSRR at 2 MHzWith 80-mA Load Current
30-mV LDO Dropout Voltage at 100 mA,V_OUT = –5 V
Current Limit and Thermal Protection
Create a Custom Design Using the LM27761 With the WEBENCH Power Designer

Application

Battery-Powered Devices: Portable electronics, such as smartphones, tablets, and wearable devices, use voltage regulators to ensure consistent power supply to the internal components.
Power Management: Voltage regulators are essential components in power management circuits, helping to stabilize voltages for various subsystems in larger electronic systems.
Embedded Systems: Microcontrollers and embedded systems often incorporate voltage regulators to ensure stable power for their operation.
IoT (Internet of Things) Devices: Low-power voltage regulators are used in IoT devices, which may run on battery power and need efficient power management.
Automotive Electronics: Automotive systems rely on voltage regulators for stable power delivery to sensors, actuators, and control units.
Audio Amplifiers: Voltage regulators help maintain consistent power supply for audio amplifiers, ensuring audio quality.
LED Drivers: LED lighting systems often use voltage regulators to provide constant voltage to the LEDs.
Communication Equipment: In telecom and networking equipment, voltage regulators stabilize power supply voltages for various components.
Industrial Control Systems: Voltage regulators are used in industrial automation and control systems to ensure reliable operation.
Consumer Electronics: Televisions, DVD players, gaming consoles, and other consumer electronics employ voltage regulators to maintain stable power supply.

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	-
Function	Step-Up/Step-Down	Output Configuration	Negative
Topology	Charge Pump	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	2.7V
Voltage - Input (Max)	5.5V	Voltage - Output (Min/Fixed)	-1.5V
Voltage - Output (Max)	-5V	Current - Output	250mA
Frequency - Switching	2MHz	Synchronous Rectifier	No
Operating Temperature	-40°C ~ 85°C (TA)	Mounting Type	Surface Mount
Base Product Number	LM27761	Vin (min) (V)	2.7
Vin (max) (V)	5.5	Vout (min) (V)	-5.2
Vout (max) (V)	-1.5	Iout (max) (A)	0.25
Regulated outputs (#)	1	Switching frequency (min) (kHz)	1700
Switching frequency (max) (kHz)	2300	Iq (typ) (mA)	0.37
Features	Enable, Integrated LDO, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed	Operating temperature range (°C)	-40 to 85
Rating	Catalog	Type	Charge pump

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Ratings and Reviews

T**r 06/17/2023

Delivery to minsk 10 days.

M**l 04/30/2023

I have not opened the parcel yet, but i was already upset!!!! Fragile goods for $5 can and a little better to pack. I don't even know if it's gonna work

E**a 11/11/2021

Item from one lot. Until i checked.

M**n 04/29/2021

Fast shipping. The product corresponds to the description. Good seller recommend.