Figure 4-1. DSG Package 8-Pin …

LM27761DSGT

ActiveVoltage Regulators - DC DC Switching RegulatorsWSON

IC REG CHARGE PUMP ADJ 8WSON

LM27761DSGT is a low-noise charge-pump voltage inverter with 2.7V-5.5V input, adjustable -1.5V to -5V output, 250mA max output current, 2MHz switching frequency, in 8-pin WSON package.Checked against the datasheet

See alternatives Ask AI FAEDatasheet PDF

All alternatives

View full report

Technical parameters

Key specs

Input voltage2.7 ~ 5.5 V

Output voltage-5 ~ -1.5 VMax: -1.5 V (5.5 V ≥ VIN ≥ 2.7 V)

Output current250 mAMax

Switching frequency1.7 ~ 2.3 MHzMax: 2.3 MHz (VIN = 3.6 V)

Datasheet-verified parameters

27 items

Parameter	Value and test conditions	Source
Operating input voltage	Min: 2.7 V, Max: 5.5 V
Adjustable output voltage	Min: -5 V, Max: -1.5 V (5.5 V ≥ VIN ≥ 2.7 V)
Operating output current	Min: 0 mA, Max: 250 mA
Switching frequency	Min: 1.7 MHz, Typ: 2 MHz, Max: 2.3 MHz (VIN = 3.6 V)
Package	WSON (DSG), 8-Pin, 2.00mm × 2.00mm
Operating ambient temperature	Min: -40 °C, Max: 85 °C
RoHS	Yes
Supply current	Typ: 370 µA, Max: 600 µA (Open circuit, no load)
Shutdown supply current	Typ: 7 µA, Max: 12 µA
Output resistance to CPOUT	Typ: 2 Ω (VIN = 5.5 V)
LDO dropout voltage	Typ: 30 mV (ILOAD = 100 mA, VOUT = -5 V)
Power supply rejection ratio	Typ: 35 dB (ILOAD = 80 mA, VCPOUT = -5 V)
Output noise voltage	Typ: 20 µVRMS (ILOAD = 80 mA, 10 Hz to 100 kHz)
Feedback pin reference voltage	Min: 1.202 V, Typ: 1.22 V, Max: 1.238 V
Load regulation	Typ: 4.6 µV/mA (0 to 250 mA, VOUT = -1.8 V)
Line regulation	Typ: 1.5 mV/V (5.5 V ≥ VIN ≥ 2.7 V, ILOAD = 50 mA)
Enable pin input voltage high	Min: 1.2 V (5.5 V ≥ VIN ≥ 2.7 V)
Enable pin input voltage low	Max: 0.4 V (5.5 V ≥ VIN ≥ 2.7 V)
Undervoltage lockout	Typ: 2.6 V (VIN falling), 2.4 V (VIN rising)
Absolute Maximum Ratings - Ground voltage	Max: 5.8 V (VIN to GND or GND to VOUT)
Absolute Maximum Ratings - Continuous output current	Max: 300 mA (CPOUT and VOUT)
Absolute Maximum Ratings - TJMAX	Max: 150 °C
Storage temperature	Min: -65 °C, Max: 150 °C
ESD Ratings - Human-body model	±1000 V
ESD Ratings - Charged-device model	±250 V
Thermal shutdown	Typ: 150 °C (shutdown), 130 °C (release)
Input current limit	Typ: 500 mA (output shorted to ground)

All parameters (21)ExpandCollapse

Power
Current - Output	250mA
Voltage - Input (Max)	5.5V
Voltage - Input (Min)	2.7V
Voltage - Output (Max)	-5V
Voltage - Output (Min/Fixed)	-1.5V
AC and DC characteristics
Frequency - Switching	2MHz
Environment and package
Mounting Type	Surface Mount
Operating Temperature	-40°C~85°C(TA)
Package	Tape & Reel (TR); Cut Tape (CT); Digi-Reel®
Package / Case	8-WFDFN Exposed Pad
Supplier Device Package	8-WSON (2x2)
Other
Base Product Number	LM27761
Function	Step-Up/Step-Down
Mfr	Texas Instruments
Number of Outputs	1
Output Configuration	Negative
Output Type	Adjustable
Product Status	Active
Series	-
Synchronous Rectifier	No
Topology	Charge Pump

Pinout and package

Pin	Name	Function	Source
1		VIN, Positive power supply input
2		GND, Ground
3		CPOUT, Negative unregulated output voltage
4		VOUT, Regulated negative output voltage
5		VFB, Feedback input. Connect VFB to an external resistor divider between VOUT and GND. DO NOT leave unconnected.
6		EN, Active high enable input
7		C1-, Negative terminal for C1
8		C1+, Positive terminal for C1
Thermal Pad		Thermal Pad, Ground. DO NOT leave unconnected.

Documents

DatasheetDatasheet · 2.0 MB · 2026-10-28

Open document center

Datasheet-verified content is extracted by AI from the manufacturer datasheet. Click a page number to view the original.