PAM2322AGEAR中文资料buck-converter数据手册Diodes规格书

描述 Description

The PAM2322AGEAR is a dual step-down current-mode, DC-DC converter. At heavy load, the constant-frequency PWM control performs with excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2322AGEAR provides a power-saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent current under light load operation

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\tThe PAM2322AGEAR 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, USB, and other standard power sources. Output 1 is a 1.8V fixed output. Output 2 is adjustable from 0.9V to VIN. Both outputs employ an internal power switch and synchronous rectifier to minimize external part count and realize high efficiency.

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\tOutput 1 delivers up to 1000mA output current while output 2 delivers up to 2000mA. Each regulator has an independent enable pin. 

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\tEach output of the PAM2322AGEAR can be disabled when a logic low is applied to the channel enable pin. During shutdown, the input is disconnected from the output and the shutdown current is less than 0.1μA

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\tOther key features include under-voltage lockout, soft-start, hiccup mode short circuit protection and thermal shutdown.

应用 Application

Portable Electronics
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\t\tPersonal Information Appliances
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\t\tWireless and DSL Modems


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\t\t\t\tProduct Specifications