PAM2319

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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

Portable Electronics

Personal Information Appliances

Wireless and DSL Modems

Product Specifications

Product Parameters

Type	Buck
Efficiency	95 %
HS RDS(ON)	350 mΩ
LS RDS(ON)	350 mΩ
Frequency Typ	3000 kHz
Minimum Input Voltage	2.7 V
Maximum Input Voltage	5.5 V
Output Current	1 A
Output Voltage	ADJ(1.0 to 3.3) V
Quiescent Current Typ	0.04 mA
Shutdown Current Typ	0.1 µA

Technical Documents

Evaluation Boards and User Guides

PAM2319-User-Guide.pdf (573 KB)

Recommended Soldering Techniques

TN1.pdf

Orderable Part Number	Authorized Distributor	Quantity	Inventory Date	Buy Online	Countries/Regions
PAM2319AYAA	Digi-Key Electronics	3216	10/21/2020	Buy Now	Europe, Asia, North America
PAM2319AYAA	Farnell, An Avnet Company	3000	10/21/2020	Buy Now	England
PAM2319AYAA	Future Electronics - Europe	10	10/21/2020		England
PAM2319AYAA	Mouser Electronics Inc.	3000	10/21/2020	Buy Now	South America, North America, Asia, Europe, Middle East