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AAT2789

Features: • VIN Range: 2.7V to 5.5V• Output Voltage Range: 0.6V to VIN• Low Noise Light Load Mode• Low Ripple PWM Mode• Output Current:▪ Channel 1: 1700mA▪ Channel 2: 800mA• Highly Efficient Step-Down Converters• Low RDS(ON) Integrated Power Sw...

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SeekIC No. : 004261095 Detail

AAT2789: Features: • VIN Range: 2.7V to 5.5V• Output Voltage Range: 0.6V to VIN• Low Noise Light Load Mode• Low Ripple PWM Mode• Output Current:▪ Channel 1: 1700mA▪ ...

AAT2789 Data Sheet

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Part Number:
AAT2789
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• VIN Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Low Noise Light Load Mode
• Low Ripple PWM Mode
• Output Current:
▪ Channel 1: 1700mA
▪ Channel 2: 800mA
• Highly Efficient Step-Down Converters
• Low RDS(ON) Integrated Power Switches
• 100% Duty Cycle
• High Switching Frequency
• Peak Current Mode Control
• Internal Compensation
• Excellent Transient Response
• Internal Soft Start
• Fast Turn-On Time
• Over-Temperature Protection
• Current Limit Protection
• Low Profile TDFN34-16 Package
• -40°C to 85°C Temperature Range




Application

• Cellular and Smart Phones
• Digital Cameras
• Handheld Instruments
• Mass Storage Systems
• Microprocessor / DSP Core / IO Power
• PDAs and Handheld Computers
• Portable Media Players
• USB Devices
• Wireless Data Systems




Pinout

Connection Diagram




Specifications

Symbol
Description
Value
Units
VIN
VLX
VFB
VEN
TJ
TLEAD		 VP1, VP2, VCC1, VCC2 voltages to PGND, AGND
VLX1, VLX2 to PGND, AGND
VFB1, VFB2 to PGND, AGND
VEN1, VEN2 to PGND, AGND
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


  • VIN Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to VIN
  • Low Noise Light Load Mode
  • Low Ripple PWM Mode
  • Output Current:
    • Channel 1: 1700mA
    • Channel 2: 800mA
  • Highly Efficient Step-Down Converters
  • Low RDS(ON) Integrated Power Switches
  • 100% Duty Cycle
  • High Switching Frequency
  • Peak Current Mode Control
  • Internal Compensation
  • Excellent Transient Response
  • Internal Soft Start
  • Fast Turn-On Time
  • Over-Temperature Protection
  • Current Limit Protection
  • Low Profile TDFN34-16 Package
  • -40C to 85C Temperature Range





Description

The AAT2789 is a 2-channel synchronous step-down converter operating from an input voltage range of 2.7V to 5.5V, making it the ideal choice for single-cell Lithiumion/ polymer battery powered systems or low voltage 3.3V and 5V based consumer equipment. Channel 1 delivers up to 1700mA output current while Channel 2 delivers up to 800mA. Both converters incorporate a unique low noise architecture which reduces output ripple and spectral noise.

The AAT2789 uses a high switching frequency to minimize external filter sizing. Peak current mode control eliminates external compensation while optimizing transient performance and stability.

The AAT2789 requires a minimum of external components to realize a high efficiency dual-output step-down converter while minimizing solution size and footprint. Each of the step-down regulators has an independent input and enable pin. Externally adjustable output voltage is provided. Light load operating mode provides high efficiency over the entire load range. Low quiescent current enables excellent life for battery powered systems.

The AAT2789 is available in a 3x4mm Pb-free 16-pin TDFN package and is rated over the -40°C to 85°C operating temperature range.






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