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AAT1149

Features: • Ultra-Small 0603 Inductor (Height = 1mm)• VIN Range: 2.7V to 5.5V• VOUT Adjustable from 1.0V to VIN• 400mA Max Output Current• Up to 98% Efficiency• 45A No Load Quiescent Current• 3.0MHz Switching Frequency• 70s Soft Start• Fast Loa...

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SeekIC No. : 004261015 Detail

AAT1149: Features: • Ultra-Small 0603 Inductor (Height = 1mm)• VIN Range: 2.7V to 5.5V• VOUT Adjustable from 1.0V to VIN• 400mA Max Output Current• Up to 98% Efficiency• 4...

AAT1149 Data Sheet

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Part Number:
AAT1149
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/5/27

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Product Details

Description



Features:

• Ultra-Small 0603 Inductor (Height = 1mm)
• VIN Range: 2.7V to 5.5V
• VOUT Adjustable from 1.0V to VIN
• 400mA Max Output Current
• Up to 98% Efficiency
• 45A No Load Quiescent Current
• 3.0MHz Switching Frequency
• 70s Soft Start
• Fast Load Transient
• Over-Temperature Protection
• Current Limit Protection
• 100% Duty Cycle Low-Dropout Operation
• <1A Shutdown Current
• SC70JW-8 Package
• Temperature Range: -40°C to +85°C


Application

• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor / DSP Core / IO Power
• PDAs and Handheld Computers
• USB Devices


Pinout

Connection Diagram


Specifications

Symbol
Description
Value
Units
VIN
VLX
VFB
VEN
TJ
TLEAD		 Input Voltage to GND
LX to GND
FB to GND
EN to GND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
6.0
-0.3 to VIN + 0.3
-0.3 to VIN + 0.3
-0.3 to 6.0
-40 to 150
300
V
V
V
V
°C
°C



Description

The AAT1149 SwitchReg is a 3.0MHz step-down converter with an input voltage range of 2.7V to 5.5V and output voltage as low as 1.0V. It is optimized to react quickly to load variations and operate with a tiny 0603 inductor that is only 1mm tall.

The AAT1149 output voltage is programmable via external feedback resistors. It can deliver 400mA of load current while maintaining a low 45A no load quiescent current.

The 3.0MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT1149 maintains high efficiency throughout the operating range, which is critical for portable applications.

The AAT1149 is available in a Pb-free, space-saving 2.0x2.1mm SC70JW-8 package and is rated over the -40°C to +85°C temperature range.




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