Features: • 5.5V max supply input
• -40 to 85°C Temperature Range
• Fixed output voltage: 1.0V - 4.2V
• 2.5A output current
• Integrated low on resistance power switches
• Internally compensated current mode control
• 1MHz switching frequency
• Fixed or adjustable VOUT: 1.0 to 4.2V
• Constant PWM mode
• Low output ripple with light load
• Internal softstart
• Current limit protection
• Over-Temperature protection
• MSOP-8 package
• Up to 95% efficiency
Application• Computer Peripherals
• Set Top Boxes
• Network Cards
• Cable/DSL Modems
• High efficiency conversion from 5V or 3.3V supply
Pinout
Specifications
| Symbol |
Description |
Value |
Units |
| VCC, VP |
VCC, VP to GND |
6 |
V |
| VLX |
LX to GND |
-0.3 to VP+0.3 |
V |
| VFB |
FB to GND |
-0.3 to VCC+0.3 |
V |
| VEN |
EN to GND |
-0.3 to VCC+0.3 |
V |
| TJ |
Operating Junction Temperature Range |
-40 to 150 |
°C |
| TLEAD |
Maximum Soldering Temperature (at leads, 10 sec) |
300 |
°C |
| VESD |
ESD Rating 2 - HBM |
3000 |
V |
- 5.5V max supply input
- -40 to +85C temperature range
- Fixed output voltage: 1.0V - 4.2V
- 2.5A output current
- 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
- Up to 95% efficiency
DescriptionThe AAT1155 SwitchReg™ is a member of AnalogicTech™'s Total Power Management™ IC product family. The Step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. 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 part count.
The AAT1155 is available in an MSOP-8 package, rated over -40 to 85°C.
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The AAT1155 SwitchReg is a member of AnalogicTech Total Power Management IC product family. The step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. 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 part count. The AAT1155 is available in an MSOP-8 package, rated over the -40 to +85C temperature range.
AAT1155 Data Sheet
