NXP Semiconductors PBLS1504Y,115

Overview

PBLS1504Y,115 from NXP Semiconductors is a dual-function discrete load switch integrating a low-V_CEsat PNP BISS transistor (TR1) and an NPN resistor-equipped transistor (TR2) in a single SOT363 (SC-88) package. It delivers −500 mA collector current capability for the PNP switch, 300–500 mΩ equivalent on-resistance at −500 mA, and features integrated bias resistors (R1 = 22 kΩ typ, R2/R1 = 1.0) for simplified high-side switching in portable power rails.

For engineers reviewing the PBLS1504Y,115 datasheet, PBLS1504Y,115 pinout, PBLS1504Y,115 application, or PBLS1504Y,115 equivalent, this device serves as a space-saving, low-drive-power solution for supply line switching, battery charger control, and LED backlight high-side drive - where low threshold voltage (<1 V), reduced component count, and thermal performance (R_th(j-a) = 416 K/W) are critical selection criteria.

Technical Context

The PBLS1504Y,115 implements a monolithic dual-transistor architecture: TR1 is a −15 V, −500 mA PNP BISS transistor optimized for low-saturation operation (V_CEsat = −250 mV typ at −500 mA/−50 mA), while TR2 is a 50 V, 100 mA NPN RET with built-in 22 kΩ input bias resistor and 1:1 R2/R1 ratio for predictable turn-on behavior. Both transistors share thermal coupling within the same die substrate.

Its electrical behavior is defined by tightly specified DC gain (h_FE = 90 min at −500 mA for TR1; 60 min at 5 mA for TR2), precise VI(on)/VI(off) thresholds (2.5 V/1.1 V typ), and stable R_CEsat across temperature (−55 °C to +150 °C), enabling robust operation in battery-powered systems without external bias network tuning.

Key Specifications

Pinout & Package

SOT363 (SC-88) plastic surface-mounted package, 6-lead, 2.2 mm × 1.8 mm footprint, 0.65 mm pitch, 1.15 mm height - optimized for high-density portable PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side load switch applications.

Compared with NSV1504Y,115, PBLS1504Y,115 offers superior voltage rating and lower on-resistance for demanding 12–15 V systems; versus BC847B,215, it delivers full functional integration with guaranteed matching and reduced validation effort - making it optimal for production-grade portable and automotive subsystems.

Availability

PBLS1504Y,115 is available at Aetrix Electronics and suitable for smartphone battery management, automotive LED backlighting, portable medical monitors, and industrial handheld scanners requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for PBLS1504Y,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

PBLS1504Y,115 belongs to NXP's BISS (Buried Layer Integrated Schottky) transistor family, designed specifically for high-efficiency, space-constrained load switching in battery-powered and automotive electronics.

FAQ

What is the maximum continuous current the PBLS1504Y,115 can switch in high-side configuration?

The PBLS1504Y,115 supports −500 mA DC collector current for its PNP transistor (TR1) under T_amb ≤ 25 °C with standard FR4 PCB layout. At elevated ambient temperatures (e.g., 60 °C), derating to −350 mA is required to maintain junction temperature ≤150 °C, based on its 416 K/W thermal resistance and 300 mW total power dissipation limit.

Can the PBLS1504Y,115 be used with 1.8 V logic control signals?

No - the TR2 input requires V_I(on) ≥ 2.5 V (typical) to reliably saturate and drive TR1 base. At 1.8 V, TR2 remains in cutoff, preventing TR1 activation. For 1.8 V systems, a level-shifter or alternative logic-level compatible switch (e.g., NX2020UK) is required.

Does the PBLS1504Y,115 include ESD protection on its input pin?

No - the datasheet does not specify any on-chip ESD protection diodes on Pin 5 (TR2 base). External 2 kV HBM-rated TVS (e.g., PESD5V0S1BA) is recommended for I/O lines exposed to handling or connector mating in portable equipment.

How does the R2/R1 resistor ratio affect switching performance?

The R2/R1 ratio (0.8–1.2) sets the internal current gain compensation for TR2, ensuring stable base drive to TR1 across process variation. A ratio outside this range risks insufficient TR1 base current at high temperature or excessive drive causing unnecessary power loss - both degrade reliability and efficiency.