LM2773 - Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator

LM2773是TI德州仪器公司的一款电荷泵（无感应器）产品，LM2773是Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator，本站介绍了LM2773的封装应用图解、特点和优点、功能等，并给出了与LM2773相关的TI元器件型号供参考。

LM2773 - Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA. The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.

The LM2773 utilizes a regulated charge pump with gains of 2/3x and 1x. It has very low ripple and noise on both the input and output due to its pre-regulated 1.15MHz (typ.) switching frequency and spread spectrum operation. When output currents are low, the LM2773 automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range.

The LM2773 is available in TI's 0.5mm pitch 9-bump DSBGA.

产品特性

Low-Noise Spread Spectrum Operation
1.8V/1.6V Selectable Output Voltage
2% Output Voltage Regulation
> 75% Efficiency in 1.8V Mode
Very Low Output Ripple: 10mV @ 300mA
Output Currents up to 300mA
2.5V to 5.5V Input Voltage Range
Shutdown Disconnects Load from VIN
1.15MHz Switching Frequency
No Inductors…Small Solution Size
Short Circuit and Thermal Protection
0.5mm pitch, DSBGA-9 (1.511 × 1.511mm × 0.6mm)

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