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

KANA 发表于 2018-11-02 17:47:05

数据： Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator 数据表

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.

特性

低噪声扩频操作
1.8V /1.6V可选输出电压
2 ％输出电压调节
＆gt; 1.8V模式下效率为75％
极低输出纹波：10mV @ 300mA
输出电流高达300mA
2.5V至5.5V输入电压范围< /li>
关闭断开负载 IN
1.15MHz开关频率
无电感器......小解决方案尺寸
短路和热保护
0.5mm间距，DSBGA-9（1.511×1.511mm×0.6mm）

所有商标均为其各自的商标。拥有者。

参数与其它产品相比降压充电泵（无电感器）


Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Operating Temperature Range (C)
Package Group