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 V_OUT 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.

• 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

• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Vout (Min) (V)
• 4.87
• Vout (Max) (V)
• 5.13
• Iout (Max) (A)
• 0.18
• Regulated outputs (#)
• 1
• Switching frequency (Min) (kHz)
• 932
• Switching frequency (Max) (kHz)
• 1552
• Iq (Typ) (mA)
• 2.4
• Features
• Enable, Load Disconnect
• Rating
• Catalog

LM2757的完整型号有：LM2757TM/NOPB、LM2757TMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM2757TM/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-12，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM2757TM/NOPB的批量USD价格：.702（1000+）

LM2757TMX/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-12，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM2757TMX/NOPB的批量USD价格：.585（1000+）

LM2757TMEV — 具有高阻抗输出（停机时）的高效开关电容器升压稳压器 EVM

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 (...)

LM2757 PSpice Transient Model (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)