Diodes PAM2327 Instrukcja Użytkownika Pobierz pdf

PAM2327

Document number: DS36277 Rev. 2 - 2

1 of 11

www.diodes.com

July 2013

PAM2327

A Product Line o

Diodes Incorporated

FAST TRANSIENT 3.5A STEP-DOWN CONVERTER

Description

The PAM2327 is a 3.5A step-down synchronous converter. The

1.2MHz switching frequency enables the use of small external

components. The ultra-small 2mm x 2mm footprint and high efficiency

make the PAM2327 an ideal choice for portable applications.

The PAM2327 delivers 3.5A maximum output current while

consuming only 55µA no load quiescent current. Low R integrated

MOSFETs and 100% duty cycle operation make the PAM2327 the

ideal choice for high output voltage, high current applications which

require a low dropout threshold.

The PAM2327 provides excel lent transient response and output

accuracy across the operating range.

The PAM2327 maintains high efficiency throughout the load range.

The PAM2327 automatically optimizes efficiency during light load

mode (PSM) and maintains constant frequency and low output ripple

during PWM mode.

Over-temperature and short circuit protection safeguard the PAM2327

and system components from damage.

The PAM2327 is available in an ultra-small QFN2x2-12 package. The

product is rated over a temperature range of -40°C to +85°C.

Applications

 Cellular Phone

 Digital Cameras

 Hard Disk Drives

 MP3 Players

 PDAs and Handheld Computers

 Portable Media Players

 USB Devices

 Wireless Network Cards

Pin Assignments

Features

 3.5A Maximum Output Current

 Tiny 1.0µH Chip Inductor

 Excellent Transient Response

 Input Voltage: 2.5V to 5.5V

 Adjustable Output Voltage: 1.0V to 4.0V

 High Efficiency with 1.2MHz Switching Frequency

 55µA No Load Quiescent Current

 100% Duty Cycle Low-Dropout Operation

 Internal Soft Start

 Power Good Indicator

 Over-Temperature and Current Limit Protection

 Hiccup mode for output short protection

 1µA Shutdown Current

 -40°C to +85°C Temperature Range

 Available in QFN2x2-12 Package

 RoHS/REACH Compliant

Typical Applications Circuit

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