2 MHz, Synchronous Boost

DC-to-DC Converter

Data Sheet

ADP1607

Rev. C

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FEATURES

Up to 96% efficiency

Low 0.9 V input start-up voltage

1.8 V to 3.3 V output voltage range

23 µA quiescent current

Fixed PWM and light load PFM mode options

Synchronous rectification

True shutdown output Isolation

Internal soft start, compensation, and current limit

2 mm × 2 mm, 6-lead LFCSP

Compact solution size

APPLICATIONS

1-cell and 2-cell alkaline and NiMH/NiCd powered devices

Portable audio players, instruments, and medical devices

Solar cell applications

Miniature hard disk power supplies

Power LED status indicators

GENERAL DESCRIPTION

The ADP1607 is a high efficiency, synchronous, fixed

frequency, step-up dc-to-dc switching converter with an

adjustable output voltage between 1.8 V and 3.3 V for use

in portable applications.

The 2 MHz operating frequency enables the use of small

footprint, low profile external components. Additionally, the

synchronous rectification, internal compensation, internal fixed

current limit, and current mode architecture allow for excellent

transient response and a minimal external part count.

Other key features include fixed PWM and light load PFM

mode options, true output isolation, thermal shutdown (TSD),

and logic controlled enable. Available in a lead-free, thin, 6-lead

LFCSP package, the ADP1607 is ideal for providing efficient

power conversion in portable devices.

TYPICAL APPLICATION CIRCUIT

ADP1607

1

2

3

VIN

EN

5

SW

6

VOUT

FB

ON

OFF

4

GND

ADJUSTABLE

OUTPUT VOLTAGE

1.8V TO 3.3V

INPUT VOLTAGE

L

2.2µH

10µF

10µF

R1

R2

Figure 1.