ADP2147
Info : RECOMMENDED FOR NEW DESIGNS
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ADP2147

Compact, 800 mA, 3 MHz, Simple DVS, Buck Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $0.96
Features
  • Input voltage: 2.3 V to 5.5 V
  • Peak efficiency: 95%
  • 3 MHz fixed frequency operation
  • Low quiescent current: 23 μA
  • Ultralow shutdown current: 0.2 μA (typical)
  • VSEL pin for simple dynamic voltage scaling (DVS) 
  • 100% duty cycle low dropout mode
  • Internal synchronous rectifier, compensation, and soft start
  • Current overload and thermal shutdown protection
  • Small, 6-ball, 1 mm × 1.5 mm WLCSP package
Additional Details
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The ADP2147 is a high efficiency, low quiescent current, step-down (buck) dc-to-dc regulator with an output voltage that can be switched between two different settings under the control of a select pin. The total solution requires only three tiny external components.

The buck regulator automatically switches operating modes, depending on the load current level, to maximize efficiency. At high output loads, the buck regulator operates in PWM mode. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light-load efficiency.

The ADP2147 runs on input voltages of 2.3 V to 5.5 V, which allows for single lithium or lithium polymer cells, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources. The maximum load current of 800 mA is achievable across the input voltage range.

The ADP2147 is available with fixed output voltages from 0.8 V to 3.3 V. All versions include an internal power switch and synchronous rectifier for minimal external part count and high efficiency. The ADP2147 has an internal soft start and is internally compensated. During logic controlled shutdown, the input is disconnected from the output, and the ADP2147 draws less than 0.2 μA (typical) from the power source.

Other key features include undervoltage lockout to prevent deep battery discharge and soft start to prevent input current overshoot at startup. The ADP2147 is available in a 6-ball WLCSP.

Applications

  • PDAs and palmtop computers
  • Wireless handsets
  • Digital audio portable media players
  • Digital cameras, GPS navigation units
  • Low power portable medical equipment 
Part Models 4
1ku List Price Starting From $0.96

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP2147ACBZ-110-R7
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ADP2147ACBZ-130-R7
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ADP2147ACBZ-150-R7
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ADP2147ACBZ-170-R7
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Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

ADP2147ACBZ-110-R7

PRODUCTION

ADP2147ACBZ-130-R7

PRODUCTION

ADP2147ACBZ-150-R7

PRODUCTION

ADP2147ACBZ-170-R7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

arrow down

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

ADP2147ACBZ-110-R7

PRODUCTION

ADP2147ACBZ-130-R7

PRODUCTION

ADP2147ACBZ-150-R7

PRODUCTION

ADP2147ACBZ-170-R7

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-ADP2147

ADP2147 Evaluation Boards

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EVAL-ADP2147

ADP2147 Evaluation Boards

ADP2147 Evaluation Boards

Product Detail

The ADP2147 is a high efficiency, low quiescent current, synchronous, step-down, dc-to-dc converter.

The buck regulator automatically switches operating modes, depending on the load current level. At higher output loads, the buck regulator operates in PWM mode. When the load current falls below a predefined threshold, the regulators operate in power save mode (PSM), improving the light-load efficiency. The output voltage can be changed between two different settings under the control of a VSEL pin.


The 3 MHz switching frequency minimizes the size of external components.

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