Texas Instruments

TPSM81033 - 5.5V, 2A Boost Power Module | Texas Instruments

Name: TPSM81033
Brand: Texas Instruments
Price: 1.85 USD
Availability: InStock

MPN: TPSM81033 ✓ Active

In Stock Ships in 1-3 business days

1.8V to 5.5V Vdss 2A valley current limit Id QFN-FCMOD (9) 2.6mm × 2.5mm Package 2.4MHz Speed

From $1.85 USD / Unit

MOQ: 1 |

Price updated: 2026-08-25

Volume Pricing

Qty	Unit Price	Extended
1	$2.85	$2.85
10	$2.56	$25.60
100	$2.28	$228.00
500	$2.05	$1,025.00
1,000	$1.85	$1,850.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TPSM81033 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TPSM81033VCDR

✅ Drop-In

📦 QFN-FCMOD (9) 2.6mm × 2.5mm

Same die, tape and reel packaging variant

📋 Reference alternative (not in catalog)

TPSM81033VCRR

✅ Drop-In

📦 QFN-FCMOD (9) 2.6mm × 2.5mm

Same die, different reel packaging variant

📋 Reference alternative (not in catalog)

TPSM81033VCTR

✅ Drop-In

📦 QFN-FCMOD (9) 2.6mm × 2.5mm

Same die, different reel packaging variant

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

TPSM81033 Maximum Ratings & Electrical Characteristics

Input Voltage Range	1.8V to 5.5V
Output Voltage Range	2.2V to 5.5V (adjustable), 5.0V fixed (FB to AVIN)
Output Current	2A valley current limit
Switching Frequency	2.4MHz
Integrated Inductor	0.43µH
Topology	Synchronous boost with adaptive constant on-time valley-current control
Light Load Modes	Auto PFM and forced PWM (selectable via MODE pin)
Spread Spectrum	Optional frequency modulation to reduce EMI
Power Good	Yes
Output Overvoltage Protection	5.75V
Short Circuit Protection	Yes
Thermal Shutdown	Yes
Package	QFN-FCMOD (9) 2.6mm × 2.5mm
Mounting Type	Surface Mount
Operating Temperature Range	[DATA_NEEDED: operating temperature range]

TPSM81033 Pin Configuration

Pin 1	VIN — Input supply voltage
Pin 2	GND — Ground
Pin 3	SW — Switching node (internal)
Pin 4	VOUT — Output voltage
Pin 5	FB — Feedback input
Pin 6	EN — Enable input
Pin 7	MODE — Mode selection (PFM/PWM)
Pin 8	PG — Power good output
Pin 9	AVIN — Analog input for fixed output

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TPSM81033 is suitable for 6 applications: Battery-Powered IoT Sensors, Portable Audio Devices, TFT-LCD Bias Supplies, Portable Medical Devices, Industrial Sensors and Actuators, Smart Home Devices.

🧩

Battery-Powered IoT Sensors

The TPSM81033's wide input range (1.8V to 5.5V) and high efficiency at light loads make it ideal for battery-powered IoT sensors. It can boost a single-cell Li-ion battery (3.0V-4.2V) to a stable 3.3V or 5V rail for sensors, MCUs, and wireless transceivers. The auto PFM mode extends battery life during sleep modes, while the integrated inductor saves PCB space in compact sensor nodes. The power good output enables proper power sequencing for reliable system startup.

Recommended

🎧

Portable Audio Devices

The TPSM81033 provides a clean, low-noise 5V rail for portable audio amplifiers and DACs. Its 2.4MHz switching frequency keeps switching noise above the audio band, reducing audible interference. The forced PWM mode ensures constant frequency operation, minimizing noise in sensitive analog circuits. The integrated inductor and small package allow for slim, compact audio devices. The high efficiency extends battery life in portable speakers and headphones.

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TAS5827 · Texas Instruments PCM2705C · Texas Instruments

📺

TFT-LCD Bias Supplies

The TPSM81033 can generate the positive bias voltage (e.g., 5V) required for TFT-LCD panels. Its adjustable output up to 5.5V and 2A current limit support various panel sizes. The spread spectrum modulation reduces EMI, which is critical in display applications to avoid interference with touch controllers. The small package and integrated inductor fit into slim display modules. The power good signal helps sequence the display power rails.

Recommended

TPS65185 (Display bias power supply IC) TCA9548APWR · Texas Instruments

💊

Portable Medical Devices

The TPSM81033 is suitable for portable medical devices such as glucose monitors and pulse oximeters. Its wide input range accommodates various battery chemistries, and its high efficiency prolongs battery life. The small footprint is ideal for wearable health monitors. The device's protection features (overvoltage, short-circuit, thermal shutdown) ensure safe operation in critical applications. The power good output aids in system monitoring.

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MSP430FR2433IRGER · Texas Instruments INA219AIDR · Texas Instruments

🏭

Industrial Sensors and Actuators

The TPSM81033 can boost a 3.3V or 5V supply to higher voltages for industrial sensors and actuators. Its 2A current limit supports driving relays, solenoids, or LED indicators. The wide input range allows operation from 24V industrial buses with proper step-down pre-regulation. The forced PWM mode provides predictable noise performance for sensitive measurement circuits. The integrated inductor reduces EMI in electrically noisy industrial environments.

Recommended

TMP117 · Texas Instruments DRV8876PWPT · Texas Instruments

🏠

Smart Home Devices

The TPSM81033 is ideal for smart home devices like smart locks, thermostats, and security cameras. It efficiently boosts battery voltage to power wireless modules and sensors. The compact package fits into small enclosures. The power good output enables proper startup sequencing for complex systems. The spread spectrum option reduces EMI, which is important for devices with wireless connectivity. The high efficiency extends battery life, reducing maintenance.

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CC3135RNMARG · Texas Instruments TMP117 · Texas Instruments

Recommended Products Summary

What is the input voltage range of TPSM81033?

The TPSM81033 operates from an input voltage range of 1.8V to 5.5V. According to the TI datasheet, this wide range supports single-cell Li-ion batteries and other low-voltage sources. The output can be adjusted from 2.2V to 5.5V, or fixed at 5.0V by connecting FB to AVIN.

What is the output current capability of TPSM81033?

The TPSM81033 provides a 2A valley current limit, which translates to a maximum output current of approximately 2A at higher output voltages. The actual achievable output current depends on input voltage, output voltage, and efficiency. For example, from a 3.3V input to a 5V output, it can deliver around 1.2A continuous.

What is the switching frequency of TPSM81033?

The TPSM81033 operates at a fixed 2.4MHz switching frequency. This high frequency allows the use of small external components, reducing solution size. It also helps keep switching noise above the audio band, making it suitable for audio applications.

Does TPSM81033 have an integrated inductor?

Yes, the TPSM81033 integrates a 0.43µH power inductor inside the module. This eliminates the need for an external inductor, simplifying PCB layout and reducing board space. The integrated inductor is designed for high efficiency and low EMI.

What is the package size of TPSM81033?

The TPSM81033 comes in a 2.6mm × 2.5mm QFN-FCMOD (9) package. This compact package is ideal for space-constrained applications such as wearables, IoT devices, and portable electronics. The package has excellent thermal performance due to the exposed pad.

What is the price of TPSM81033?

As of 2026-08-25, the TPSM81033VCDR is priced at approximately $2.85 for 1 unit, $2.56 for 10 units, $2.28 for 100 units, $2.05 for 500 units, and $1.85 for 1000 units at major distributors like DigiKey and Mouser. Prices may vary based on quantity and supplier.

Where can I buy TPSM81033?

TPSM81033 is available from authorized distributors such as DigiKey, Mouser, and Avaq. You can also purchase directly from Texas Instruments' website. Check stock availability and lead times on these platforms. As of 2026-08-25, DigiKey lists it as 'ships today'.

What is the lead time for TPSM81033?

The lead time for TPSM81033 varies by distributor and quantity. As of 2026-08-25, DigiKey shows it as 'ships today' for in-stock items. For larger quantities, lead times may extend to 4-6 weeks. Check with your preferred distributor for current lead times.

Is TPSM81033 in stock?

As of 2026-08-25, TPSM81033VCDR is in stock at DigiKey and Mouser. Availability can change quickly, so check the distributor websites for real-time inventory. If out of stock, you can request a backorder or use the cross-reference tool to find alternatives.

What is the difference between TPSM81033 and TPS61256A?

The TPSM81033 is a power module with an integrated inductor, while the TPS61256A is a boost converter IC that requires an external inductor. The TPSM81033 simplifies design and reduces board space, but the TPS61256A offers more flexibility in inductor selection. Both are from TI and target similar applications.

When should I choose TPSM81033 over a discrete boost converter?

Choose TPSM81033 when you need a compact, easy-to-design boost solution with minimal external components. It is ideal for space-constrained designs where an integrated inductor saves PCB area and reduces design risk. If you need higher output current or custom inductor optimization, a discrete solution may be better.

What is the best drop-in replacement for TPSM81033?

The best drop-in replacement for TPSM81033 is the TPSM81033VCDR, which is the same part with a specific reel packaging. For a functional alternative, consider the TPSM82813 (a buck module, not boost) or TPS61230 (a boost converter IC, but not pin-compatible). No exact pin-compatible cross-brand alternative is known; verify with TI's cross-reference tool.

Can TPSM81033 be used for battery-powered IoT devices?

Yes, the TPSM81033 is ideal for battery-powered IoT devices. Its wide input range (1.8V to 5.5V) supports single-cell Li-ion batteries, and its high efficiency at light loads (auto PFM mode) extends battery life. The compact package and integrated inductor make it suitable for small sensor nodes.

What are the key specifications of TPSM81033 that engineers should know?

The TPSM81033 is a 5.5V, 2A, 2.4MHz synchronous boost power module with integrated 0.43µH inductor. It operates from 1.8V to 5.5V input, outputs 2.2V to 5.5V, and features power good, overvoltage protection, and thermal shutdown. It uses adaptive constant on-time valley-current control and offers auto PFM or forced PWM modes.

Is TPSM81033 the same as TPSM82813?

No, TPSM81033 is a boost converter, while TPSM82813 is a buck (step-down) converter. They are not interchangeable. TPSM81033 steps up voltage, whereas TPSM82813 steps down. Both are power modules from TI but serve different functions.

Engineering reference data for TPSM81033 — comparison, design guidance, and compliance information.

Selection Guide

Choose TPSM81033 when you need a compact, integrated boost solution with minimal external components and high switching frequency. It is ideal for battery-powered devices where board space is limited and design simplicity is valued. If you require higher output current or need to optimize the inductor for specific performance, consider a discrete boost converter like TPS61230. For very low-power applications with lower current requirements, TPS610981 may be more cost-effective. All alternatives are from Texas Instruments, but only TPSM81033VCDR is a true drop-in replacement with the same package and pinout.

Comparison with Alternatives

Parameter	This Product	TPSM81033VCDR	TPS61230	TPS610981
Package	QFN-FCMOD (9) 2.6mm × 2.5mm	QFN-FCMOD (9) 2.6mm × 2.5mm	QFN-16 (RTE) 3mm × 3mm	SOT-23-6
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Input Voltage Range	1.8V to 5.5V	1.8V to 5.5V	2.5V to 4.5V	0.7V to 4.5V
Output Voltage Range	2.2V to 5.5V	2.2V to 5.5V	2.5V to 5.5V	1.8V to 5.5V
Output Current	2A valley current limit	2A valley current limit	1.2A (typical)	0.5A (typical)
Switching Frequency	2.4MHz	2.4MHz	1.2MHz	1.4MHz
Integrated Inductor	Yes (0.43µH)	Yes (0.43µH)	No (external)	No (external)
Power Good	Yes	Yes	No	No

Key Differentiators

Integrated inductor (vs TPS61230)
Higher switching frequency (vs TPS61230)
Power good output (vs TPS610981)

Design Notes

Place input and output capacitors as close to the VIN and VOUT pins as possible. Use low-ESR ceramic capacitors (e.g., 10µF X5R) for input and output. The integrated inductor reduces layout complexity, but ensure a solid ground plane under the module for thermal and electrical performance. Refer to the TI layout guidelines in the datasheet.

The QFN-FCMOD package has an exposed pad that must be soldered to a thermal pad on the PCB. Provide adequate copper area and thermal vias to dissipate heat. The maximum power dissipation depends on ambient temperature and PCB design. For high load currents, ensure the junction temperature stays within the recommended range.

Do not exceed the absolute maximum input voltage of 5.5V. For fixed 5V output, connect FB to AVIN as per datasheet. The MODE pin must be tied to VIN or GND to select the desired light-load mode. Ensure the output capacitor is rated for the output voltage and has sufficient capacitance for stability.