PBLS1503Y,115

Overview

The PBLS1503Y is a dual-transistor component integrating a low VCEsat PNP BISS transistor and an NPN resistor-equipped transistor within a single SOT363 (SC-88) package. The PNP section supports a collector-emitter voltage of -15 V and a DC collector current up to -500 mA, with an equivalent on-resistance of 300 mΩ at full load. The NPN section provides a collector-emitter voltage of 50 V and a DC output current of 100 mA, featuring an integrated bias resistor of 10 kΩ. This configuration enables efficient high-side switching with minimal drive power requirements.

Feature Summary

• Combines a low saturation voltage PNP load switch and an NPN transistor with an internal bias resistor in one compact surface-mount package.
• Requires low drive power due to the low threshold voltage characteristic compared to MOSFET alternatives.
• Reduces overall component count and board space by integrating two distinct transistor functions into a single device.

Applications

• Supply line switches
• Battery charger switches
• High-side switches for LEDs, drivers, and backlights
• Portable equipment

Procurement Notes

Verify the specific ordering suffix matches the required packing method, as the PBLS1503Y variant utilizes the SOT363 package available in tape and reel configurations. Confirm that the design accommodates the thermal resistance characteristics specified for the SC-88 plastic surface-mounted package under standard FR4 footprint conditions. Ensure input voltage limits for the NPN section are respected during operation.

Selection Notes

Select this component when space constraints require combining a high-current PNP load switch with a signal or driver NPN transistor. The integrated bias resistor simplifies the NPN circuit design by eliminating external components. Verify that the -15 V rating of the PNP section aligns with the supply line voltage and that the 50 V rating of the NPN section suits the control signal levels.

Part Context

This device belongs to Nexperia's portfolio of discrete semiconductor solutions, originally developed under the NXP Standard Product business. It is designed for automotive, industrial, computing, consumer, and wearable markets. The PBLS1503Y specifically addresses the need for compact, high-efficiency switching solutions in portable and battery-powered applications where board real estate is limited.

Replacement Considerations

The datasheet lists PBLS1503V as a related part number sharing identical electrical specifications but housed in a different SOT666 package. Designers must verify pinout compatibility and physical footprint differences if substituting between the SOT363 and SOT666 variants.

FAQ

What is the function of the integrated resistor in the NPN transistor section?

The NPN transistor includes an integrated bias resistor (R1) with a typical value of 10 kΩ, which simplifies circuit design by reducing the need for external components.

What is the maximum DC collector current for the PNP transistor?

The maximum DC collector current for the PNP transistor (TR1) is -500 mA.

How does the low VCEsat feature benefit the design?

The low VCEsat (BISS) technology minimizes voltage drop across the PNP transistor, thereby reducing power dissipation and improving efficiency in load switching applications.