Specifications
| Type | Description |
|---|---|
| Part Number | LM27761 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | DSG WSON, 8-pin, 2.00 mm x 2.00 mm |
| Input Voltage Range | 2.7 to 5.5 V; operating recommended condition |
| Adjustable Output Voltage Range | -5 to -1.5 V; 5.5 V >= VIN >= 2.7 V |
| Output Current | 0 to 250 mA; operating recommended condition |
| Maximum Continuous Output Current | 300 mA; CPOUT and VOUT absolute maximum rating |
| Supply Current | 370 uA typ, 600 uA max; open circuit, no load, VIN=5 V |
| Shutdown Supply Current | 7 uA typ, 12 uA max; VIN=5 V |
| Switching Frequency | 1.7 MHz min, 2 MHz typ, 2.3 MHz max; VIN=3.6 V |
| Inverter Output Resistance to CPOUT | 2 ohm typ; VIN=5.5 V |
| LDO Dropout Voltage | 30 mV typ; ILOAD=100 mA, VOUT=-5 V |
| Power Supply Rejection Ratio | 35 dB typ; ILOAD=80 mA, VCPOUT=-5 V |
| Output Noise Voltage | 20 uVRMS typ; ILOAD=80 mA, 10 Hz to 100 kHz |
| Feedback Reference Voltage | 1.202 V min, 1.22 V typ, 1.238 V max; VIN=5 V |
| Load Regulation | 4.6 uV/mA typ; 0 to 250 mA, VOUT=-1.8 V |
| Line Regulation | 1.5 mV/V typ; 5.5 V >= VIN >= 2.7 V, ILOAD=50 mA |
| Enable Input High Voltage | 1.2 V min; 5.5 V >= VIN >= 2.7 V |
| Enable Input Low Voltage | 0.4 V max; 5.5 V >= VIN >= 2.7 V |
| Undervoltage Lockout Falling Threshold | 2.6 V typ; VIN falling |
| Undervoltage Lockout Rising Threshold | 2.4 V typ; VIN rising |
| Operating Ambient Temperature | -40 to 85 °C; recommended operating condition |
| Operating Junction Temperature | -40 to 125 °C; recommended operating condition |
| Maximum Junction Temperature | 150 °C; absolute maximum rating |
| Storage Temperature | -65 to 150 °C; absolute maximum rating |
| Ground Voltage Rating | 5.8 V max; VIN to GND or GND to VOUT absolute maximum rating |
| Enable Pin Voltage Rating | GND - 0.3 V to VIN + 0.3 V; absolute maximum rating |
| HBM ESD Rating | +/-1000 V; ANSI/ESDA/JEDEC JS-001 human-body model |
| CDM ESD Rating | +/-250 V; JEDEC JESD22-C101 charged-device model |
| Junction-to-Ambient Thermal Resistance | 67.7 °C/W; WSON DSG 8-pin package |
| Junction-to-Case Top Thermal Resistance | 89.9 °C/W; WSON DSG 8-pin package |
| Junction-to-Board Thermal Resistance | 37.6 °C/W; WSON DSG 8-pin package |
| Junction-to-Top Characterization Parameter | 2.4 °C/W; WSON DSG 8-pin package |
| Junction-to-Board Characterization Parameter | 38 °C/W; WSON DSG 8-pin package |
| Junction-to-Case Bottom Thermal Resistance | 9.4 °C/W; WSON DSG 8-pin package |
| Typical External Capacitors | C1=1 uF, C2=4.7 uF, C3=4.7 uF, C4=2.2 uF; typical application circuit |
| Input Current Limit | 500 mA typ; output shorted directly to ground |
| Output Discharge Current | approximately 1.85 mA; shutdown mode, output pulled toward GND |
| Switching Topology | regulated switched-capacitor voltage inverter with negative LDO |
| Datasheet Status | request_only |
Product Overview
The LM27761 is a Texas Instruments Power_Management power IC described as a low-noise regulated voltage inverter. Its topology combines a regulated switched-capacitor voltage inverter with a negative LDO, allowing an adjustable output range from -5 to -1.5 V across a 2.7 to 5.5 V input range.
Electrical performance includes 0 to 250 mA recommended output current, 300 mA maximum continuous current at CPOUT and VOUT under absolute maximum ratings, and a 2 MHz typical switching frequency at VIN = 3.6 V. The device specifies 370 uA typical supply current, 7 uA typical shutdown supply current, 20 uVRMS typical output noise from 10 Hz to 100 kHz, and 35 dB typical PSRR at 80 mA.
The package is an 8-pin DSG WSON measuring 2.00 mm x 2.00 mm. Thermal data for this package includes 67.7 °C/W junction-to-ambient resistance and 9.4 °C/W junction-to-case bottom resistance. Typical application capacitors are C1 = 1 uF, C2 = 4.7 uF, C3 = 4.7 uF, and C4 = 2.2 uF.
Key Features
- 2.7 to 5.5 V recommended input range
- Adjustable -5 to -1.5 V negative output
- 0 to 250 mA recommended output current
- 2 MHz typical switching frequency at VIN=3.6 V
- 20 uVRMS typical output noise from 10 Hz to 100 kHz
- 35 dB typical power supply rejection ratio
- 30 mV typical LDO dropout at 100 mA
- 7 uA typical shutdown supply current
- 1.22 V typical feedback reference voltage
- 8-pin 2.00 mm x 2.00 mm DSG WSON package
Typical Applications
- Negative voltage rails
- Low-noise negative bias supplies
- Switched-capacitor inverter designs
- Compact power-management circuits
- LDO-regulated negative outputs
- Enable-controlled negative supply rails
Procurement Notes
When requesting a quote for LM27761, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What input voltage range does the LM27761 support?
The LM27761 has a recommended operating input voltage range of 2.7 to 5.5 V. The adjustable negative output range is specified from -5 to -1.5 V across the same VIN range.
What output current is specified for the LM27761?
The recommended operating output current range is 0 to 250 mA. The extracted absolute maximum rating lists 300 mA as the maximum continuous output current for CPOUT and VOUT.
What package is used for the LM27761?
The LM27761 is supplied in a DSG WSON 8-pin package with 2.00 mm x 2.00 mm dimensions. Package thermal data includes 67.7 °C/W junction-to-ambient resistance and 9.4 °C/W junction-to-case bottom resistance.
What noise and PSRR values are specified?
The output noise voltage is 20 uVRMS typical at ILOAD = 80 mA over 10 Hz to 100 kHz. The power supply rejection ratio is 35 dB typical at ILOAD = 80 mA and VCPOUT = -5 V.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.