NOT RECOMMENDED FOR NEW DESIGN A Product Line of CONTACT US Diodes Incorporated PAM2306D DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER Description Pin Assignments The PAM2306D is a dual step-down current mode, DC-DC converter. At heavy load, the constant-frequency PWM control performs excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2306D provides a powersaving Pulse-Skipping Modulation (PSM) mode to reduce quiescent current under light load operation. The PAM2306D supports a range of input voltages from 2.5V 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 available for adjustment. All versions 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 0.1A. Other key features include under-voltage lockout to prevent deep battery discharge. Features Efficiency up to 96% Only 40A (Typ per Channel) Quiescent Current Applications Output Current: Up to 1A per Channel Internal Synchronous Rectifier Cellular Phone 1.5MHz Switching Frequency Portable Electronics Soft-Start Personal Information Appliances Under-Voltage Lockout Wireless and DSL Modems Short Circuit Protection MP3 Players Thermal Shutdown Small 12L WDFN3x3 Package Pb-Free and RoHS Compliant For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. A Product Line of Diodes Incorporated PAM2306D Pin Descriptions Pin Name Pin Number Function WDFN3x3-12L 1 VIN2 Power Input of Channel 2. 2 LX2 Pin for Switching of Channel 2. 3, 9 Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum GND Exposed Pad power dissipation. 4 FB1 Feedback of Channel 1. 5, 11 NC1, NC2 No Connection 6 EN1 Chip Enable of Channel 1 (Active High). V V . EN1 IN1 7 VIN1 Power Input of Channel 1. 8 LX1 Pin for Switching of Channel 1. 10 FB2 Feedback of Channel 2. 12 EN2 Chip Enable of Channel 2 (Active High). V V . EN2 IN2 Functional Block Diagram 2 of 12 PAM2306D April 2020 Diodes Incorporated www.diodes.com Document number: DS36394 Rev. 3 - 3