LM2757

現行

在關機時具有高阻抗輸出的切換式電容器升壓穩壓器

產品詳細資料

Rating Catalog Operating temperature range (°C) -30 to 85 Type Charge pump Iout (max) (A) 0.18 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 932 Switching frequency (max) (kHz) 1552 Features Enable, Load Disconnect, Regulated Vout (min) (V) 4.87 Vout (max) (V) 5.13 Iq (typ) (µA) 2400
Rating Catalog Operating temperature range (°C) -30 to 85 Type Charge pump Iout (max) (A) 0.18 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 932 Switching frequency (max) (kHz) 1552 Features Enable, Load Disconnect, Regulated Vout (min) (V) 4.87 Vout (max) (V) 5.13 Iq (typ) (µA) 2400
DSBGA (YFQ) 12 2.52000000000000018 mm² 1.8 x 1.4000000000000001
  • 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

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.

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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類型 標題 日期
* Data sheet LM2757 Switched-Capacitor Boost Regulator With High Impedance Output in Shutdown datasheet (Rev. F) PDF | HTML 2015年 7月 18日
Application note How to Meet the HDMI 5V Source Requirement (Rev. C) 2019年 9月 26日
White paper The Forgotten Converter 2015年 6月 15日
EVM User's guide AN-1731 LM2757 Evaluation Board (Rev. A) 2013年 4月 30日
Application note Designing Energy-Efficient Handheld Illum Solutions (Rev. A) 2013年 4月 30日

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LM2757TMEV — 在關機時具有高阻抗輸出的高效率切換式電容器升壓穩壓器

The LM2757 is a constant frequency pre-regulated switched-capacitor charge pump that operates at 1.25MHz to produce a low-noise regulated output voltage. The device can be configured to provide up to 100mA at 4.1V, 110mA at 4.5V, or 180mA at 5V. Excellent efficiency is achieved without the use of (...)

使用指南: PDF
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模擬型號

LM2757 PSpice Transient Model (Rev. A)

SNVMAR6A.ZIP (145 KB) - PSpice Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YFQ) 12 Ultra Librarian

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