Diodes PAM2307 Uživatelský manuál stáhnout pdf

PAM2307

Document number: DSxxxxx Rev. 2 - 1

1 of 14

www.diodes.com

September 2012

PAM2307

Product Line o

Diodes Incorporated

3A LOW NOISE STEP-DOWN DC-DC CONVERTER

Description

The PAM2307 is a 3A step-down DC-DC converter. At heavy load,

the constant-frequency PWM control performs excellent stability and

transient response. No external compensation components are

required.

The PAM2307 supports a range of input voltages from 2.7V to 5.5V,

allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/

NiMH cell,and other standard power sources. The output voltage is

adjustable from 0.6V to the input voltage. The PAM2307 employs

internal power switch and synchronous rectifier to minimize external

part count and realize high efficiency. During shutdown, the input is

disconnected from the output and the shutdown current is less than

1µA. Other key features include over-temperature and short circuit

protection, and under-voltage lockout to prevent deep battery

discharge.

The PAM2307 delivers 3A maximum output current while consuming

only 42µA of no-load quiescent current. Ultra-low R

DS(ON)

integrated

MOSFETs and 100% duty cycle operation make the PAM2307 an

ideal choice for high output voltage, high current applications which

require a low dropout threshold.

The PAM2307 is available in QFN3x3 16-Pin and SOP-8(EP)

package.

Features

• Output Current: Up to 3A

• Output Voltage: 0.6V to V

• Input Voltage: 2.7 to 5.5V

• Efficiency up to 95%

• 42µA (Typ) No Load Quiescent Current

• Shutdown Current: <1µA

• 100% Duty Cycle Operation

• 1.5MHz Switching Frequency

• Internal Soft Start

• No external Compensation Required

• Current Limit Protection

• Thermal Shutdown

• QFN3x3 16-Pin and SOP-8(EP) Package

Pin Assignments

Applications

• 5V or 3.3V Point of Load Conversion

• Telecom/Networking Equipment

• Set Top Boxes

• Storage Equipment

• Video Cards

• DDR Power Supply

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Strany 4

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Strany 5

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Strany 6

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Strany 7

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Strany 8

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Strany 9 - Application Information

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Strany 10

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Strany 11 - Marking Information

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Strany 12 - QFN3x3-16

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Strany 13 - SOP-8(EP)

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