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PAM2319

DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER

Datasheet

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Description

The PAM2319 is a dual step-down current-mode, DC-DC converter. At heavy load, the constantf requency PWM control performs excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2319 provides a powersaving Pulse-Skipping Modulation (PSM) mode to reduce quiescent current under light load operation. The PAM2319 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. The dual output voltages are adjustable from 1.0V to 3.3V. Both channels employ 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 0.1μA. Other key features include under-voltage lockout, soft-start, short circuit protection and thermal shutdown.

Application(s)

Portable Electronics

Personal Information Appliances

Wireless and DSL Modems

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Type	Buck
Minimum Input Voltage (V)	2.7
Maximum Input Voltage (V)	5.5
Output Current (A)	1
Minimum Output Voltage (V)	1
Maximum Output Voltage (V)	3.3
Quiescent Current Typ (µA)	40
Shutdown Current Typ (µA)	0.1
Frequency Typ (kHz)	3000
HS RDS(ON) (mΩ)	350
LS RDS(ON) (mΩ)	350

Technical Documents

Evaluation Boards and User Guides

PAM2319-EVB-User-Guide.pdf (578 KB)

Recommended Soldering Techniques

TN1.pdf