Texas Instruments TPS2150IPWP

Overview

TPS2150IPWP from Texas Instruments is a dual-channel USB power management IC integrating a 5-V high-side power switch with dual-current-limiting (100 mA / 1800 mA) and an adjustable 250 mA LDO regulator (0.9 V to 3.3 V output). It features independent enable control, SW_PG and LDO_PG power-good signals, and thermal/UVLO protection. Designed for USB 2.0 high-power peripherals requiring strict inrush control and dual-rail sequencing.

For engineers reviewing the TPS2150IPWP datasheet, TPS2150IPWP pinout, TPS2150IPWP application, or TPS2150IPWP equivalent, key selection criteria include its 5-V switch input range (4.1–5.5 V), active-high SW_EN with internal pulldown, 40 mΩ typical R_DS(on), 85 µA operating supply current, and HTSSOP-14 PowerPAD™ package compatibility with thermal design constraints.

Technical Context

The TPS2150IPWP implements a dual-threshold current-limit architecture: initial turn-on limits inrush to ≤100 mA until SW_OUT reaches ≥93% of SW_IN, then transitions to ≥800 mA (min) overload protection. Its LDO uses an external resistor divider on ADJ to set output voltage between 0.9 V and 3.3 V, with 0.5 V max dropout at 250 mA load.

Both channels feature independent undervoltage lockout (SW UVLO rising threshold = 4.1 V; LDO UVLO = 2.7 V), open-drain power-good outputs (LDO_PG, SW_PG) with deglitch filtering (150 µs falling edge for LDO_PG), and dedicated pulldown terminals (SW_PLDN, LDO_PLDN) to accelerate output discharge without affecting rise time.

Key Specifications

Pinout & Package

TPS2150IPWP is housed in a 14-pin HTSSOP (PWP) package with exposed thermal pad (PowerPAD™) for improved heat transfer to PCB copper. Pin numbering follows standard top-view layout with pin 1 at top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-rail USB power management applications.

Compared with TPS2141IPWP, TPS2150IPWP enables direct 5-V USB host interfacing without external regulators, while TPD3S014RTER offers ESD protection but no LDO functionality - making TPS2150IPWP the only solution supporting both regulated core voltage and native 5-V switching in one package.

Availability

TPS2150IPWP is available at Aetrix Electronics and suitable for USB 2.0 peripherals, DSP power sequencing, and ADSL modem designs requiring stable component supply, thermal-aware packaging, and dual-rail management in space-constrained layouts.

Supply support for TPS2150IPWP 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management solutions, with decades of expertise in USB interface and power IC design.

The TPS21xx family was developed specifically for USB 1.0/2.0-compliant high-power peripherals requiring inrush-controlled switching and on-board voltage regulation - addressing thermal, sequencing, and compliance challenges in consumer and telecom equipment.

FAQ

What is the maximum continuous output current supported by the TPS2150IPWP switch channel?

The TPS2150IPWP switch supports 500 mA continuous current at T_J = 110°C, with a minimum overload current limit of 800 mA in high-current mode. Its 40 mΩ typical R_DS(on) ensures low conduction loss, and thermal shutdown (125°C low-trip) protects against sustained overloads. The device is rated for 1800 mA short-circuit current under defined test conditions.

How does the TPS2150IPWP implement dual-current-limiting on its power switch?

The TPS2150IPWP switch starts in low-current-limit mode (≤100 mA) during turn-on to control inrush into output capacitance. When SW_OUT rises above 93% of SW_IN, it automatically transitions to high-current-limit mode (≥800 mA min), enabling full-load operation. This behavior is intrinsic to the IC's internal control loop and requires no external configuration.

Can the TPS2150IPWP LDO be configured for 1.8-V output, and what components are required?

Yes, the TPS2150IPWP LDO supports 1.8-V output via the ADJ pin. Connect a resistor divider between LDO_OUT and GND, with ADJ at the midpoint. For 1.8 V, use R1 = 10 kΩ (from LDO_OUT to ADJ) and R2 = 9.1 kΩ (from ADJ to GND), referencing the 0.8-V internal reference. A 4.7-µF output capacitor with 200 mΩ–8.5 Ω ESR is mandatory for stability.

What is the function of the SW_PLDN and LDO_PLDN pins on the TPS2150IPWP?

SW_PLDN and LDO_PLDN are open-drain pulldown terminals that accelerate output voltage discharge when the respective channel is disabled. When connected directly to SW_OUT or LDO_OUT, they reduce fall time without affecting rise time or regulation. Each sinks up to 15 mA at 3.3 V, enabling fast power-down for USB suspend compliance or dynamic rail control.

Does the TPS2150IPWP require external components for basic operation, and which ones are mandatory?

Yes - mandatory external components include: ceramic bypass capacitors (0.01–0.1 µF) on SW_IN and LDO_IN to GND; ≥4.7 µF output capacitor on LDO_OUT with specified ESR; resistor divider on ADJ for LDO voltage setting; and pullup resistor on LDO_PG (open-drain). A 66-µF bulk capacitor on SW_OUT is recommended for heavy loads.