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LM27761DSGR
+NomenclatureIC REG CHARGE PUMP ADJ 8WSON
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FabricantTexas Instruments
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Pièce fabricant #LM27761DSGR
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Package WSON-8
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En stock7795
365 Garantie qualité 24h/24
7*24 Garantie de service 24h/24
90-Garantie après-vente 24h/24
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Spécifications
| Attribut | Valeur |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| 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 |
Présentation
Description
The LM27761DSGR features a low quiescent current, making it energy-efficient, and it includes built-in thermal and short-circuit protection for enhanced reliability. It operates on a high-efficiency charge pump topology and delivers up to 250 mA of output current, depending on the input voltage. The device is available in a small, surface-mount package, which makes it ideal for space-constrained designs.
Overall, the LM27761DSGR is a versatile and efficient choice for generating negative supply voltages in compact electronic systems, ensuring performance while conserving power.
Equivalent
Features
1. Output Range: Delivers a fixed output voltage with a typical accuracy of ±3%.
2. Output Current: Provides a maximum output current of 250 mA.
3. Low Noise: Operates with low output voltage ripple, making it suitable for noise-sensitive applications.
4. Efficiency: Offers high efficiency due to the low quiescent current of about 100 µA.
5. Shutdown Mode: Includes an external shut-down pin, reducing the supply current to 0.1 µA when not in use.
6. Protection: Features thermal shutdown protection and current limit protection.
7. Package: Available in a small, space-efficient 8-pin VSSOP package.
8. Applications: Ideal for use in portable devices, negative power supply generation, and general-purpose negative voltage rails.
These features make the LM27761DSGR a versatile component for various electronic applications requiring a negative voltage supply.
Pinout
1. IN: Power supply input.
2. GND: Ground connection.
3. C1P: Positive terminal for the flying capacitor.
4. C1N: Negative terminal for the flying capacitor.
5. VOUT: Regulated negative voltage output.
6. FB: Feedback input to set the output voltage.
7. EN: Enable pin for device operation.
8. NR/SS: Noise reduction and soft-start pin.
9. CP: Charge pump capacitor positive terminal.
10. CN: Charge pump capacitor negative terminal.
The primary function of the LM27761DSGR is to invert the voltage from a positive input to a regulated negative output, suitable for powering negative voltage applications. It is commonly used in situations where a low-noise negative voltage rail is required, such as in analog and mixed-signal circuits.