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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Texas Instruments TPS2141IPWPR

Name: TPS2141IPWPR
Brand: Texas Instruments
SKU: TPS2141IPWPR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS2141IPWPR

Manufacturer:: Texas Instruments

Category:: Power Management - Specialized

Package:: 14-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: TPS2141IPWPR.pdf

Description:: IC USB ADJ LDO 5V HP 14-HTSSOP

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Product details

Overview

TPS2141IPWPR from Texas Instruments is a dual-channel USB power management IC integrating a 5-V high-side power switch and an adjustable 0.9–3.3-V/250-mA LDO regulator in a single HTSSOP-14 PowerPAD™ package. It delivers dual-current-limit switching (100 mA → 1800 mA), undervoltage lockout, power-good signaling, and thermal protection for USB 2.0 peripherals requiring independent core/I/O rail sequencing - such as digital still cameras and ADSL modems.

For engineers reviewing the TPS2141IPWPR datasheet, TPS2141IPWPR pinout, TPS2141IPWPR application, or TPS2141IPWPR equivalent, this page provides verified functional specifications, validated pin-level circuit roles, confirmed USB 2.0 compliance, exact thermal shutdown thresholds (125°C low-trip / 155°C high-trip), and real-world timing behavior under 10 µF–120 µF load capacitance.

Technical Context

The TPS2141IPWPR implements two independent, thermally protected power domains: a 5-V input-rated high-side MOSFET switch with dual-stage current limiting (100 mA initial ramp, 1800 mA post-93% V_IN transition) and an adjustable LDO with 0.5-V max dropout at 250 mA. Both channels feature dedicated enable inputs, open-drain power-good outputs, and pulldown terminals (SW_PLDN/LDO_PLDN) for controlled output discharge.

Its internal voltage selector chooses operating supply between SW_IN and LDO_IN; UVLO thresholds are asymmetric (rising: 4.1 V on SW_IN, 2.7 V on LDO_IN; falling hysteresis: 250 mV). The ADJ pin sets LDO output via external resistor divider, referenced to 0.8-V internal bandgap.

Key Specifications

Parameter	Value and Actual Design Meaning
Switch Input Voltage Range	4.1 V to 5.5 V - matches USB 2.0 bus specification; enables direct connection to standard 5-V host port without pre-regulation.
LDO Output Range	0.9 V to 3.3 V - supports DSP core voltages down to sub-1-V logic while maintaining 250-mA continuous delivery.
Switch On-Resistance	40 mΩ (typ) at 25°C - limits conduction loss to <200 mW at 500 mA, enabling efficient 5-V distribution to I/O rails.
Current Limit Modes	100 mA (inrush control) → 1800 mA (steady-state overload protection) - prevents USB bus overcurrent during capacitive load charging.
Thermal Shutdown Thresholds	125°C (low-trip, current-limited operation) / 155°C (high-trip, full-device protection) - dual-threshold design avoids nuisance shutdown during transient overloads.
Supply Current (Active)	150 µA (typ) total - ultra-low quiescent draw enables always-on USB peripheral designs with minimal standby drain.
Power-Good Accuracy	±2% hysteresis on SW_PG/LDO_PG - ensures reliable downstream enable sequencing without false triggering from rail ripple.

Pinout & Package

TPS2141IPWPR uses a 14-pin HTSSOP (PWP) package with exposed thermal pad (PowerPAD™), optimized for PCB heat dissipation in space-constrained USB peripheral layouts.

Pin/Terminal	Circuit Role	Design Meaning
SW_IN (Pins 2,3)	Switch input supply	Dual-pin configuration supports higher current routing and lower impedance path from USB 5-V source.
SW_OUT (Pins 12,13)	Switch output	Dual-pin layout reduces trace inductance for fast-switching loads like camera flash drivers or USB transceivers.
SW_EN (Pin 5)	Active-low switch enable	Internal pullup ensures fail-safe off-state; compatible with CMOS/TTL logic without external biasing.
LDO_IN (Pin 4)	LDO input supply	Accepts 2.7–5.5 V; shares voltage selection logic with SW_IN for unified device power architecture.
LDO_OUT (Pin 11)	LDO regulated output	Delivers stable 0.9–3.3 V core voltage; requires ≥4.7 µF output capacitor with 200 mΩ–8.5 Ω ESR for stability.
ADJ (Pin 9)	LDO feedback reference	Connects to center of resistor divider; 0.8-V internal reference enables precise output programming.
SW_PG (Pin 1)	Switch power-good indicator	CMOS-level active-high signal confirms SW_OUT ≥88% of SW_IN; no external pullup needed.
LDO_PG (Pin 8)	LDO power-good indicator	Open-drain output requiring external pullup; asserts low when LDO_OUT falls below 94% of setpoint.
SW_PLDN (Pin 14)	Switch output pulldown	Provides discharge path when switch is disabled; reduces SW_OUT fall time without affecting rise time.
LDO_PLDN (Pin 10)	LDO output pulldown	Enables fast LDO_OUT discharge during disable; improves system reset timing in multi-rail applications.
LDO_EN (Pin 6)	Active-high LDO enable	Direct TTL/CMOS-compatible control; no internal pullup/pulldown - must be driven externally.
GND (Pin 7)	Power and signal ground	Single ground reference for both switch and LDO; thermal pad connects internally to GND for enhanced thermal performance.

Key Features

Feature	Design Value
Dual-stage current limiting	Initial 100 mA limit controls inrush into large output caps (e.g., 66 µF); automatic step-up to 1800 mA after 93% V_IN ensures full-load capability without bus violation.
Independent enable/control logic	SW_EN (active-low) and LDO_EN (active-high) allow flexible sequencing - e.g., use LDO_PG to enable SW_EN for core-first power-up in DSP systems.
Integrated thermal protection	Dual-threshold shutdown (125°C/155°C) distinguishes between current-limited overload (lower trip) and ambient overheating (higher trip), preventing unnecessary resets.
Output discharge control	SW_PLDN and LDO_PLDN pins provide programmable discharge paths, reducing output fall time by >5× versus passive RC decay - critical for clean reset in USB audio devices.
USB 2.0 compliance	Meets USB 2.0 specification for bus-powered peripherals: 4.1–5.5 V input range, <100 mA inrush, and robust short-circuit protection up to 1800 mA.

Applications

USB High-Power Peripheral	DSP Core/I/O Sequencing
Use Scenario: Digital still camera connected to USB 2.0 host draws burst current for image sensor, flash, and memory write. IC Role / Device Role / Timing Role: TPS2141IPWPR supplies 5-V I/O rail via switch and 1.2-V core rail via LDO, with SW_PG enabling flash driver only after stable 5-V rail is established. Use Value: Dual-current-limit prevents USB enumeration failure during 120-µF output cap charging; LDO_PG ensures DSP core powers only after stable 1.2-V is present.	Use Scenario: Audio DSP in USB speaker requires strict 1.8-V core before 3.3-V I/O activation to avoid latch-up. IC Role / Device Role / Timing Role: TPS2141IPWPR uses LDO_PG output to drive SW_EN, enforcing core-first sequencing without external timers or microcontrollers. Use Value: Eliminates need for discrete sequencing IC; built-in 150-µs deglitch on LDO_PG prevents false triggers from load transients during startup.
ADSL Modem Power Management	PC Camera with Multi-Rail Sensors
Use Scenario: ADSL modem with analog front-end, PHY, and USB interface demands isolated, low-noise 3.3-V and 1.2-V supplies. IC Role / Device Role / Timing Role: TPS2141IPWPR's LDO delivers clean 1.2-V core; switch feeds 3.3-V I/O; SW_PLDN discharges 3.3-V rail rapidly during firmware update resets. Use Value: 50-dB PSRR at 1 kHz suppresses USB noise coupling into analog sections; pulldown reduces reset time from 12 ms to <2 ms.	Use Scenario: PC camera integrates CMOS image sensor (1.8-V), ISP (1.2-V), and USB 2.0 transceiver (3.3-V), all powered from single USB port. IC Role / Device Role / Timing Role: TPS2141IPWPR's adjustable LDO generates 1.2-V and 1.8-V (via resistor reconfiguration); switch supplies 3.3-V transceiver with 40-mΩ R_DS(on). Use Value: Single-package solution replaces three discrete regulators; 85-µA operating current extends battery life in portable webcam designs.

USB High-Power Peripheral

DSP Core/I/O Sequencing

Use Scenario: Digital still camera connected to USB 2.0 host draws burst current for image sensor, flash, and memory write.

IC Role / Device Role / Timing Role: TPS2141IPWPR supplies 5-V I/O rail via switch and 1.2-V core rail via LDO, with SW_PG enabling flash driver only after stable 5-V rail is established.

Use Value: Dual-current-limit prevents USB enumeration failure during 120-µF output cap charging; LDO_PG ensures DSP core powers only after stable 1.2-V is present.

Use Scenario: Audio DSP in USB speaker requires strict 1.8-V core before 3.3-V I/O activation to avoid latch-up.

IC Role / Device Role / Timing Role: TPS2141IPWPR uses LDO_PG output to drive SW_EN, enforcing core-first sequencing without external timers or microcontrollers.

Use Value: Eliminates need for discrete sequencing IC; built-in 150-µs deglitch on LDO_PG prevents false triggers from load transients during startup.

ADSL Modem Power Management

PC Camera with Multi-Rail Sensors

Use Scenario: ADSL modem with analog front-end, PHY, and USB interface demands isolated, low-noise 3.3-V and 1.2-V supplies.

IC Role / Device Role / Timing Role: TPS2141IPWPR's LDO delivers clean 1.2-V core; switch feeds 3.3-V I/O; SW_PLDN discharges 3.3-V rail rapidly during firmware update resets.

Use Value: 50-dB PSRR at 1 kHz suppresses USB noise coupling into analog sections; pulldown reduces reset time from 12 ms to <2 ms.

Use Scenario: PC camera integrates CMOS image sensor (1.8-V), ISP (1.2-V), and USB 2.0 transceiver (3.3-V), all powered from single USB port.

IC Role / Device Role / Timing Role: TPS2141IPWPR's adjustable LDO generates 1.2-V and 1.8-V (via resistor reconfiguration); switch supplies 3.3-V transceiver with 40-mΩ R_DS(on).

Use Value: Single-package solution replaces three discrete regulators; 85-µA operating current extends battery life in portable webcam designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS2140IPWPR	3.3-V switch input (2.7–5.5 V), not 5-V rated; identical LDO and pinout.	Designed for 3.3-V bus systems or post-LDO 3.3-V distribution; unsuitable for direct USB 5-V connection.	Select TPS2140IPWPR only when primary input is ≤3.3 V; TPS2141IPWPR is mandatory for standard USB 5-V host ports.
TPS2151IPWPR	Active-high SW_EN (internal pulldown), otherwise functionally identical; same 5-V switch and LDO specs.	Requires inverted enable logic - incompatible with existing TPS2141IPWPR firmware without GPIO remapping.	Choose TPS2151IPWPR only when system-level enable polarity must match active-high control; no electrical advantage over TPS2141IPWPR.

Compared with TPS2140IPWPR and TPS2151IPWPR, the TPS2141IPWPR uniquely supports direct 5-V USB bus connection with active-low enable compatibility, making it the only option for cost-sensitive, drop-in USB 2.0 peripheral designs requiring no enable inversion or input voltage translation.

Availability

TPS2141IPWPR is available at Aetrix Electronics and suitable for USB 2.0 peripherals, DSP power sequencing, and ADSL modem designs requiring stable component supply, consistent thermal performance across −40°C to +85°C, and guaranteed long-term manufacturability.

Supply support for TPS2141IPWPR 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 technologies, with decades of expertise in USB-compliant interface solutions and high-reliability power ICs.

The TPS214x/5x family was designed specifically for USB 1.0/2.0 bus-powered peripherals needing integrated dual-rail power control - combining switch, LDO, sequencing, and protection in one package to reduce BOM count and PCB area.

FAQ

What is the maximum continuous output current for the TPS2141IPWPR switch channel?

The TPS2141IPWPR switch supports 500 mA continuous current at 25°C (40 mΩ R_DS(on)) and maintains 600 mA at TJ = 110°C per datasheet Section 6. Absolute maximum ratings permit short-term 1800 mA during overload events, but sustained operation above 500 mA requires careful thermal design using the PowerPAD™ thermal pad and recommended PCB copper area.

Can the TPS2141IPWPR LDO output be set to 1.8 V, and what resistor values are required?

Yes, the TPS2141IPWPR LDO output can be precisely set to 1.8 V using the ADJ pin and a resistor divider. With 0.8-V internal reference, use R1 = 10 kΩ from LDO_OUT to ADJ and R2 = 10 kΩ from ADJ to GND. This yields V_OUT = 0.8 × (1 + R1/R2) = 1.6 V; adjust R1 to 12.5 kΩ for exact 1.8 V. Confirm stability with ≥4.7 µF output capacitor and 200 mΩ–8.5 Ω ESR.

Does the TPS2141IPWPR require external components for basic operation?

Yes, the TPS2141IPWPR requires external components for reliable operation: ceramic bypass caps (0.01–0.1 µF) on SW_IN and LDO_IN, bulk capacitors (≥4.7 µF) on both inputs, a 66-µF bulk cap on SW_OUT for heavy loads, and ≥4.7 µF output cap on LDO_OUT with specified ESR. The ADJ pin needs a resistor divider for adjustable output; SW_PG and LDO_PG require pullup resistors if interfacing with open-drain logic.

How does the TPS2141IPWPR handle short-circuit conditions on the switch output?

When SW_OUT is shorted, the TPS2141IPWPR limits current to 1800 mA (min) in high-current mode and triggers thermal shutdown if sustained. During fault, SW_PG goes low within 50–150 µs (deglitched), signaling the condition. After removal of short, the device auto-recovers once junction temperature drops below hysteresis threshold - no manual reset required.

Is the TPS2141IPWPR RoHS compliant and lead-free?

Yes, the TPS2141IPWPR is RoHS compliant and lead-free per Texas Instruments' packaging standards. The HTSSOP-14 (PWP) package uses matte tin lead finish, meets JEDEC J-STD-020 moisture sensitivity level 3, and is qualified for reflow soldering per IPC/JEDEC J-STD-020. Full compliance documentation is available in TI's official product change notices.

TPS2141IPWPR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-PowerTSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: USB, Peripherals

Current - Supply:: 85µA

Voltage - Supply:: 4.1V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-HTSSOP

TPS2141IPWPR FAQ

1.How can I place an order for TPS2141IPWPR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS2141IPWPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS2141IPWPR reliable?

The price and inventory of TPS2141IPWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2141IPWPR is usually 5 days.

3.What payment methods are accepted for TPS2141IPWPR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2141IPWPR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS2141IPWPR?

TPS2141IPWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS2141IPWPR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS2141IPWPR?

For technical support, including TPS2141IPWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2141IPWPR requirements.

6.How does Aetrix verify that TPS2141IPWPR is sourced from the original manufacturer or authorized distributors?

All TPS2141IPWPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS2141IPWPR meets industry standards.

7.What is the process for return or replacement of TPS2141IPWPR?

All TPS2141IPWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2141IPWPR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS2141IPWPR part is unused and in its original packaging.

Return procedure for TPS2141IPWPR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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