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LM2757
  • LM2757
  • LM2757
  • LM2757
  • LM2757

LM2757

ACTIVE

Switched Capacitor Boost Regulator with High Impedance Output in Shutdown

Texas Instruments LM2757 Product Info

1 April 2026 5

Parameters

Rating

Catalog

Iout (max) (A)

0.18

Vin (max) (V)

5.5

Vin (min) (V)

2.7

Vout (max) (V)

5.13

Vout (min) (V)

4.87

Features

Enable, Load Disconnect, Regulated

Operating temperature range (°C)

-30 to 85

Iq (typ) (A)

0.0024

Package

DSBGA (YFQ)-12-2.52000000000000018 mm² 1.8 x 1.4000000000000001

Features

  • Dual Gain Converter (2×, 3/2×) With up to 93%
    Efficiency
  • Inductorless Solution Uses Only 4 Small Ceramic
    Capacitors
  • Total Solution Area < 12 mm2
  • True Input-Output and Output-Input Disconnect
  • Up to 180-mA Output Current Capability (5 V)
  • Selectable 4.1-V, 4.5-V or 5-V Output
  • Pre-Regulation Minimizes Input Current Ripple
  • 1.24-MHz Switching Frequency for Low-Noise,
    Low-Ripple Output Voltage
  • Integrated Overcurrent and Thermal Shutdown
    Protection
  • Dual Gain Converter (2×, 3/2×) With up to 93%
    Efficiency
  • Inductorless Solution Uses Only 4 Small Ceramic
    Capacitors
  • Total Solution Area < 12 mm2
  • True Input-Output and Output-Input Disconnect
  • Up to 180-mA Output Current Capability (5 V)
  • Selectable 4.1-V, 4.5-V or 5-V Output
  • Pre-Regulation Minimizes Input Current Ripple
  • 1.24-MHz Switching Frequency for Low-Noise,
    Low-Ripple Output Voltage
  • Integrated Overcurrent and Thermal Shutdown
    Protection

Description

The LM2757 is a constant-frequency pre-regulated switched-capacitor charge pump that operates at 1.25 MHz to produce a low-noise regulated output voltage. The device can be configured to provide up to 100 mA at 4.1 V, 110 mA at 4.5 V, or 180 mA at 5 V. Excellent efficiency is achieved without the use of an inductor by operating the charge pump in a gain of either 3/2 or 2 according to the input voltage and output voltage option selection.

The LM2757 presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the LM2757 is shut down.

The LM2757 device comes in a tiny 12-pin 0.4-mm pitch DSBGA package. A perfect fit for space-constrained, battery-operated applications, the device requires only 4 small, inexpensive ceramic capacitors. Built-in soft-start, overcurrent protection, and thermal shutdown features are also included in this device.

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