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PAM2401YPADJ

DIOPAM2401YPADJ

Diodes Incorporated
Boost Switching Regulator IC Positive Adjustable 2.5V 1 Output 1A 12-UFDFN Exposed Pad
Active25,547 in stock
Datasheet Digi-Key Compare Prices

Overview

The PAM2401YPADJ is a high-efficiency step-up DC-DC converter designed for single-cell or dual-cell battery applications. It features a 1MHz switching frequency and can deliver up to 1A of output current while maintaining a low shutdown current of less than 1uA. This synchronous boost regulator includes integrated features like true output disconnect and inrush current limiting to protect sensitive downstream components.

Why Choose This Part

The PAM2401YPADJ offers up to 95 percent efficiency and a true output disconnect feature that eliminates leakage from input to output during shutdown. Its programmable current limit and hiccup mode short-circuit protection provide robust safety for compact designs. The high 1MHz switching frequency allows for the use of small surface-mount inductors and capacitors, reducing overall PCB area.

Applications

Single-Cell Li-ion to 5V Boost
Efficiently converting 3.7V nominal battery voltage to a stable 5.0V rail for USB peripherals or sensors.
Handheld Medical Instruments
Powering portable diagnostic tools that require a compact footprint and high efficiency to maximize battery life.
Battery Powered IoT Nodes
Utilizing the 0.9V start-up capability to extract maximum energy from alkaline or NiMH cells in remote monitoring applications.
Digital Cameras and Portable Media
Providing regulated power for image processors and displays from fluctuating battery voltages.

Key Specifications

Function Step-Up
Topology Boost
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 12-UFDFN Exposed Pad
Current - Output 1A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 1MHz
Operating Temperature -40degC ~ 85degC (TA)
Synchronous Rectifier Yes
Voltage - Input (Max) 4.75V
Voltage - Input (Min) 0.9V
Voltage - Output (Max) 5V
Supplier Device Package U-DFN3030-12
Voltage - Output (Min/Fixed) 2.5V

Getting Started

Designers should follow the recommended PCB layout in the datasheet to minimize EMI, keeping the input capacitor and inductor as close to the IC as possible. Set the output voltage using a resistive divider between the VOUT, FB, and GND pins according to the 2.5V to 5.0V adjustable range. Evaluation can be performed by prototyping on a multi-layer PCB with sufficient copper for thermal dissipation through the 12-UFDFN exposed pad.

PAM2401 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
PAM2401YPADJ (this part) UFDFN-12 25,547
PAM2401SCADJ TSSOP-8 23,756

Also Consider

TPS61021A TITexas Instruments - Offers a similar 3A switch current limit and high efficiency for low-voltage battery applications in a small 2x2mm bundle.
MCP1640 MCHPMicrochip Technology - Provides a lower start-up voltage of 0.65V, making it ideal for deeply discharged alkaline cell applications.
MAX17222 Analog Devices - Features ultra-low quiescent current for wearable applications where standby power consumption is the primary design constraint.