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Texas Instruments TPS61033DRLR
- Part No.:
- TPS61033DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS61033DRLR.pdf
- Description:
- IC REG BOOST ADJ SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:3,341
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Product details
Overview
TPS61033DRLR from Texas Instruments is a fully-integrated synchronous boost converter IC designed for portable battery-powered systems. It operates from 1.8 V to 5.5 V input, delivers up to 5.5-A valley switch current limit (typ), regulates output from 2.2 V to 5.5 V, and switches at 2.4 MHz - enabling compact designs in smart speakers and mobile POS terminals.
For engineers reviewing the TPS61033DRLR datasheet, TPS61033DRLR pinout, TPS61033DRLR application, or TPS61033DRLR equivalent, key selection criteria include its 20-μA quiescent current into VIN, true input-output disconnection during shutdown, adaptive constant on-time valley-current control, ±1.5% reference accuracy over –40°C to +125°C, and integrated output discharge via PG pin functionality.
Technical Context
The TPS61033DRLR implements adaptive constant on-time valley-current-mode control with internal loop compensation, eliminating external compensation components. Its dual-MOSFET power stage integrates 25-mΩ low-side and 46-mΩ high-side synchronous FETs, supporting 2.4-MHz operation with minimal external L-C footprint.
It features pin-selectable light-load operation: MODE = high enables forced PWM for noise-sensitive applications; MODE = low enables auto PFM for peak efficiency down to 0.1-μA shutdown current. Pass-through mode activates when VIN exceeds VOUT, reducing conduction loss without switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH batteries without pre-regulation. |
| Output Voltage Range | 2.2 V to 5.5 V adjustable; fixed 5.0 V when FB tied to VIN - enables direct USB-5V rail generation. |
| Valley Switch Current Limit | 5.5 A (typ) - defines maximum sustainable output current before foldback; enables ≥2 A continuous delivery at 5 V out from 3.3 V in. |
| Switching Frequency | 2.4 MHz (typ) - allows use of sub-1-μH inductors and small ceramic capacitors, minimizing solution size. |
| Quiescent Current (VIN) | 20 μA (typ) - extends battery runtime in always-on or low-duty-cycle portable devices. |
| Shutdown Current | 0.1 μA (typ) - ensures negligible drain during system sleep or off-state, critical for long shelf life. |
| Reference Accuracy | ±1.5% over –40°C to +125°C - guarantees stable regulation across industrial temperature range without calibration. |
Pinout & Package
TPS61033DRLR is housed in a 2.1-mm × 1.6-mm SOT583 8-pin package with wettable flanks, optimized for space-constrained portable PCBs and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power supply input | Accepts 1.8–5.5 V input; includes 1.7-V UVLO with 100-mV hysteresis to prevent brownout oscillation. |
| EN | Enable logic input | Active-high enable with 1.2-V threshold; internal 10-MΩ pull-down ensures default disable at power-up. |
| MODE | Light-load mode select | High = forced PWM (constant frequency, low noise); low = auto PFM (variable frequency, highest light-load efficiency). |
| PG | Open-drain power-good output | Indicates VOUT within ±7% window; supports output discharge via external RDummy resistor when pulled low at shutdown. |
| FB | Voltage feedback input | Sets output: connect to VIN for fixed 5.0 V; use external divider for adjustable output (VREF = 600 mV ±1.5%). |
| GND | Power ground | Primary return path for high-current switching; requires low-impedance connection to minimize noise and thermal rise. |
| SW | Switch node | Connects internal HS/LS FETs; carries high di/dt; must be routed short and wide with tight coupling to GND plane. |
| VOUT | Regulated output | Delivers boosted voltage; includes 5.75-V OVP, short-circuit protection, and thermal shutdown (170°C trip). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Output Discharge | Implemented via PG pin's 50-mA open-drain capability and external RDummy - ensures rapid, controlled VOUT ramp-down at shutdown without extra IC. |
| True Input-Output Disconnection | Complete isolation between VIN and VOUT during shutdown - eliminates leakage paths and preserves battery charge over extended idle periods. |
| Adaptive Constant On-Time Control | Self-adjusting on-time maintains stable regulation across wide VIN/VOUT ratios and load steps - no external compensation required. |
| Pass-Through Mode | Automatic transition to 100% duty cycle when VIN > VOUT - reduces conduction loss and improves efficiency in high-input scenarios. |
| Robust Protection Suite | Includes output overvoltage (5.75 V), thermal shutdown (170°C), output short-circuit limiting (~330 mA), and UVLO - enables reliable operation in unattended devices. |
Applications
| Smart Speaker Power Rail | Mobile POS Display Backlight |
|---|---|
|
Use Scenario: Boosting single-cell Li-ion (3.0–4.2 V) to stable 5.0 V for audio DSP, Wi-Fi module, and LED indicators. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering regulated 5-V rail with <20-μA quiescent draw during voice-inactive standby. Use Value: Enables >12-hour battery life in always-listening mode while maintaining fast wake-up response via 0.86-ms soft-start. |
Use Scenario: Driving white LED backlight (3.2–3.6 V forward) from 3.3-V system rail in handheld payment terminals. IC Role / Device Role / Timing Role: High-efficiency boost converter operating in forced PWM mode to suppress EMI near sensitive RF front-end. Use Value: Delivers 250-mA LED current with >90% efficiency at 3.3-V input, minimizing thermal load in sealed plastic enclosure. |
| Tablet USB-C Peripheral Port | Wearable Health Sensor Hub |
|
Use Scenario: Providing 5.0-V VBUS to USB-C peripherals (e.g., keyboard, flash drive) from tablet's main battery. IC Role / Device Role / Timing Role: Load-switch-capable boost regulator with pass-through mode - supplies VBUS directly when battery >5.0 V, boosting only when needed. Use Value: Eliminates need for separate load switch; reduces BOM count and PCB area while maintaining USB-IF compliance. |
Use Scenario: Powering ultra-low-power biosensor analog front-end (AFE) and BLE SoC from coin-cell (1.8–3.0 V) in fitness trackers. IC Role / Device Role / Timing Role: Efficiency-optimized boost converter in auto PFM mode - sustains 50-μA sensor bias current with <5.3-μA IQ into VOUT. Use Value: Extends coin-cell lifetime to >6 months by minimizing no-load losses and enabling deep-sleep states with 0.1-μA shutdown current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61032DRCR | Same SOT583 package and 2.4-MHz operation, but 3.5-A valley current limit and no output discharge function. | Limited to ≤1.5-A continuous loads; unsuitable where rapid VOUT ramp-down is required for system sequencing. | Select when cost sensitivity outweighs discharge requirement and peak current demand is ≤3.5 A. |
| TPS61291DRVR | Lower 1.2-A valley current limit, 1.2-MHz switching, and 1.2-μA quiescent current - optimized for micro-power, not high-current. | Targeted at sub-100-mA applications like RTC backup or sensor nodes; cannot support smart speaker or POS loads. | Choose only for ultra-low-IQ battery monitoring or auxiliary rails where 5.5-A capability is unnecessary. |
Compared with TPS61033DRLR, TPS61032DRCR offers reduced current capability and lacks output discharge, making it suitable for lower-power portable devices; TPS61291DRVR trades current and speed for extreme quiescent current reduction, serving micro-power niches rather than high-performance boost needs.
Availability
TPS61033DRLR is available at Aetrix Electronics and suitable for smart speaker power management, mobile POS display backlighting, and tablet USB-C peripheral port regulation requiring stable component supply, full production traceability, and long-term lifecycle support.
Supply support for TPS61033DRLR 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 high-efficiency DC-DC conversion.
The TPS61033X family was designed specifically for space- and efficiency-critical portable electronics, delivering high-current boost capability in the industry's smallest 8-pin package with integrated safety and sequencing features.
FAQ
What is the maximum continuous output current supported by the TPS61033DRLR?
The TPS61033DRLR supports a typical valley switch current limit of 5.5 A, enabling continuous output currents up to approximately 2 A at 5 V output from a 3.3 V input under typical conditions. Actual deliverable current depends on input voltage, output voltage, ambient temperature, and PCB thermal design - with thermal shutdown activating at 170°C junction temperature to protect the device.
Does the TPS61033DRLR support fixed 5.0-V output without external resistors?
Yes, the TPS61033DRLR supports fixed 5.0-V output by connecting the FB pin directly to VIN. This configuration uses the internal resistor divider and 600-mV reference voltage to regulate precisely to 5.0 V (±1.5% over temperature), eliminating the need for external feedback components and simplifying layout for standard USB-powered applications.
How does the output discharge function work on the TPS61033DRLR?
The TPS61033DRLR implements output discharge using its open-drain PG pin: when EN is pulled low, PG is actively driven low after a 33-μs glitch filter delay, enabling an external RDummy resistor between PG and VOUT to sink current and rapidly discharge the output capacitor. The discharge rate is adjustable via RDummy value, and no additional IC or MOSFET is required.
What protection features are integrated into the TPS61033DRLR?
The TPS61033DRLR integrates output overvoltage protection (5.75 V trip), thermal shutdown (170°C trip, 155°C recovery), output short-circuit protection (limits to ~330 mA at VOUT < 0.4 V), undervoltage lockout (1.7 V rising threshold), and true input-output disconnection during shutdown - ensuring robust operation in consumer and industrial portable equipment.
Can the TPS61033DRLR operate efficiently at very light loads?
Yes, the TPS61033DRLR achieves high light-load efficiency via pin-selectable auto PFM mode: when MODE is low, it dynamically skips switching cycles to maintain regulation while drawing only 5.3 μA quiescent current into VOUT and 20 μA into VIN, significantly extending battery life in standby or intermittent-use applications like smart speakers and wearables.
TPS61033DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-583
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.2V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- -
- Frequency - Switching:
- 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS61033DRLR FAQ
1.How can I place an order for TPS61033DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61033DRLR 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 TPS61033DRLR reliable?
The price and inventory of TPS61033DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61033DRLR is usually 5 days.
3.What payment methods are accepted for TPS61033DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61033DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61033DRLR?
TPS61033DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61033DRLR 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 TPS61033DRLR?
For technical support, including TPS61033DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61033DRLR requirements.
6.How does Aetrix verify that TPS61033DRLR is sourced from the original manufacturer or authorized distributors?
All TPS61033DRLR 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 TPS61033DRLR meets industry standards.
7.What is the process for return or replacement of TPS61033DRLR?
All TPS61033DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61033DRLR, 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 TPS61033DRLR part is unused and in its original packaging.
Return procedure for TPS61033DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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