AAT AAT1155
The AAT1155 SwitchReg™ is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. The step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. The AAT1155 is available in a Pb-free MSOP-8 package and is rated over the -40°C to +85°C temperature range.| Part No. | AAT1155 |
|---|---|
| Datasheet | AAT1155 Download |
| Manufacturer |  AAT |
| Description | Step-Down DC-DC Converter |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Able to deliver 2.5A with an internal power MOSFET, the current-mode controlled IC provides high efficiency. Fully internally compensated, the AAT1155 simplifies system design and lowers external parts count.FEATURES
●●
●
●
●
●
●
●
●
●
●
●
●
● SwitchReg™ 5.5V Max Supply Input Fixed or Adjustable VOUT: 1.0V to 4.2V 2.5A Output Current Up to 95% Efficiency Integrated Low On Resistance Power Switches Internally Compensated Current Mode Control 1MHz Switching Frequency Constant PWM Mode Low Output Ripple With Light Load Internal Soft Start Current Limit Protection Over-Temperature Protection MSOP-8 Package -40°C to +85°C Temperature Range
APPLICATIONS
●●
●
●
● Cable/DSL Modems Computer Peripherals High Efficiency Conversion from 5V or 3.3V Supply Network Cards Set-Top Boxes Typical Application INPUT 10µF VP FB AAT1155 ENABLE 100Ω VCC LX LX 1.5µH OUTPUT GND 0.1µF 120µF 1155.2005.11.1.6 1 AAT1155 1MHz 2.5A Step-Down DC/DC Converter Pin Descriptions Pin # 1 2 3 4 5, 8 6, 7 Symbol FB GND EN VCC VP LX Function Feedback input pin.
