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Texas Instruments TPS92201ADRVR
- Part No.:
- TPS92201ADRVR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS92201ADRVR.pdf
- Description:
- 1 OR 1.5-A HIGH-EFFICIENCY SYNCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,664
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Product details
Overview
TPS92201ADRVR from Texas Instruments is a synchronous buck LED driver IC delivering 1.5A constant output current with 2.5V–5.5V input range, 1.5MHz fixed-frequency PWM operation, and integrated 220mΩ/170mΩ HS/LS MOSFETs. It supports analog dimming (1%–100% duty cycle) and operates in Power Save Mode at light load for up to 95% efficiency - deployed in smart home cameras and IP cameras requiring compact, high-efficiency LED biasing.
For engineers reviewing the TPS92201ADRVR datasheet, TPS92201ADRVR pinout, TPS92201ADRVR application, or TPS92201ADRVR equivalent, key selection criteria include its WSON-6 package thermal performance (RθJA = 82.6°C/W), 100mV feedback reference accuracy, shutdown current of 0.1µA, adaptive off-time peak-current control, and compatibility with 20kHz–200kHz PWM dimming inputs without audible noise.
Technical Context
The TPS92201ADRVR implements adaptive off-time peak-current control with fixed 1.5MHz switching frequency across full load range, enabling stable regulation without external compensation. Its Power Save Mode automatically transitions to PFM at light load to sustain >90% efficiency down to 10mA output current.
It integrates protection circuitry including LED open/short detection, FB resistor open/short response, overcurrent limiting (1.9A–2.16A HS current limit), and thermal shutdown (150°C rising threshold). The 100% duty-cycle capability enables low-dropout operation when VIN approaches VOUT + VFB + IOUT×RDS(on).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.5V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail systems without pre-regulation. |
| Output current | 1.5A constant - drives high-brightness IR or white LEDs in security cameras and doorbells. |
| Switching frequency | 1.5MHz - enables use of small 2.2µH inductors and ceramic capacitors for space-constrained PCBs. |
| Feedback reference | 100mV ±5% - sets LED current via external RSENSE; enables precise 1%–100% analog dimming. |
| Shutdown current | 0.1µA - extends battery life in always-on smart lock and video doorbell applications. |
| HS/LS RDS(on) | 220mΩ / 170mΩ - minimizes conduction loss and thermal rise at full 1.5A load. |
| Thermal resistance | RθJA = 82.6°C/W (WSON-6) - supports 1.5A continuous operation with minimal copper area. |
Pinout & Package
TPS92201ADRVR uses a 2mm × 2mm WSON-6 package with exposed thermal pad (pin 7 not connected). The 6-pin layout optimizes thermal dissipation and board area for LED driver modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM | Digital dimming input | Accepts 20kHz–200kHz PWM signal; duty cycle directly scales FB reference from 1mV to 100mV for analog dimming. |
| EN | Enable control | Logic-high (>1.2V) enables regulation; logic-low (<0.4V) disables output and reduces VIN current to 0.1µA. |
| VIN | Main power input | Supplies internal circuitry and high-side switch; UVLO triggers at 2.2V falling, 2.4V rising with 0.1V hysteresis. |
| SW | Switch node | Connects to inductor and internal HS/LS FETs; requires tight layout to minimize EMI and ringing. |
| GND | Power ground | Reference for all internal circuits and FB sensing; must be low-impedance connection to thermal pad. |
| FB | Current-sense feedback | Monitors voltage across external RSENSE; regulates LED current as ILED = VFB/RSENSE. |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode | Automatically switches from PWM to PFM at light load - maintains >92% efficiency at 100mA while reducing switching losses. |
| 100% duty-cycle operation | Enables dropout as low as VFB + IOUT×RDS(on) - supports LED strings where VOUT ≈ VIN, e.g., 3.3V input driving 2.8V IR LED. |
| Integrated protection | Full fault coverage: LED open/short, FB resistor open/short, thermal shutdown, and HS overcurrent - eliminates need for external monitoring circuitry. |
| Soft-start | Internal ramp limits inrush current during EN assertion - prevents input rail sag in battery-powered systems with high-impedance sources. |
| Low-noise PWM dimming | 20kHz–200kHz input frequency range avoids audible coil whine - critical for quiet indoor camera and doorbell installations. |
Applications
| Smart Home Camera | IP Camera |
|---|---|
|
Use Scenario: Night-vision illumination using high-power IR LEDs synchronized with image sensor exposure timing. IC Role / Device Role / Timing Role: Constant-current buck driver regulating 1.5A through 2–4 series IR LEDs; PWM input synchronized to sensor frame rate for flicker-free imaging. Use Value: 95% efficiency at full load extends runtime on PoE-powered or battery-backed units; 1.5MHz switching allows <2mm² solution size for compact camera modules. |
Use Scenario: Outdoor surveillance lighting with ambient temperature variation from –40°C to +85°C. IC Role / Device Role / Timing Role: LED current controller with thermal shutdown and LED open/short fault reporting to system MCU via status flag (indirectly inferred from FB behavior). Use Value: RθJA = 82.6°C/W and –40°C to +85°C operating range enable reliable operation in unventilated enclosures; 0.1µA shutdown current preserves backup battery during idle periods. |
| Video Doorbell | Smart Doorlock |
|
Use Scenario: Brief LED activation during motion-triggered event capture, powered by coin-cell or rechargeable Li-ion. IC Role / Device Role / Timing Role: High-efficiency LED driver with ultra-low shutdown current and fast EN-controlled startup (<100µs). Use Value: 0.1µA shutdown current enables multi-year battery life; soft-start prevents voltage droop that could reset the host SoC during wake-up. |
Use Scenario: Status illumination (e.g., green/red LED ring) indicating lock/unlock state in low-power BLE-enabled hardware. IC Role / Device Role / Timing Role: Precision current source supporting 1%–100% analog dimming for smooth UI transitions and ambient light adaptation. Use Value: 100mV FB reference with ±5% tolerance ensures consistent brightness across units; 220mΩ/170mΩ integrated FETs eliminate external diode and reduce BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92201DRVR | No Power Save Mode; fixed PWM only - higher light-load quiescent current (450–600µA vs. 520–720µA for TPS92201ADRVR). | Suitable for constant-brightness applications without dynamic dimming; less efficient below 200mA. | Select when lowest cost and fixed-frequency stability outweigh light-load efficiency needs. |
| TPS92201ADRLR | Same Power Save Mode functionality but in SOT563-6 package (1.6mm × 1.6mm); higher RθJA = 152°C/W limits max continuous current to ~1.0A. | Better suited for ultra-thin designs where height <0.6mm is critical; requires more careful thermal management. | Select when board height constraint dominates over thermal performance and full 1.5A capability. |
Compared with TPS92201DRVR and TPS92201ADRLR, the TPS92201ADRVR uniquely balances full 1.5A capability, Power Save Mode efficiency, and WSON-6 thermal performance - making it optimal for thermally constrained, battery-sensitive smart camera and doorbell designs requiring both high peak current and long standby life.
Availability
TPS92201ADRVR is available at Aetrix Electronics and suitable for smart home camera, IP camera, and video doorbell applications requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.
Supply support for TPS92201ADRVR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability signal chain solutions.
The TPS92201ADRVR belongs to TI's LED driver product line, engineered specifically for compact, high-efficiency constant-current biasing of IR and visible LEDs in battery- and PoE-powered vision systems.
FAQ
What is the maximum continuous output current supported by the TPS92201ADRVR?
The TPS92201ADRVR supports a maximum continuous output current of 1.5A, enabled by its integrated 220mΩ high-side and 170mΩ low-side MOSFETs. This rating assumes proper PCB thermal design with the WSON-6 package's RθJA of 82.6°C/W and ambient temperature ≤85°C. Derating applies above 85°C ambient or with reduced copper area.
Does the TPS92201ADRVR support analog dimming, and how is it implemented?
Yes, the TPS92201ADRVR supports true analog dimming from 1% to 100% via its PWM input pin. The internal feedback reference scales linearly with PWM duty cycle - from 1mV at 1% duty to 100mV at 100% - allowing precise LED current adjustment without PWM-induced flicker. This is distinct from digital PWM dimming of the output itself.
How does Power Save Mode operate in the TPS92201ADRVR, and what benefit does it provide?
Power Save Mode in the TPS92201ADRVR automatically transitions from fixed 1.5MHz PWM to pulse-frequency modulation (PFM) under light load conditions (typically <200mA). This reduces switching losses and lowers quiescent current, sustaining >92% efficiency at 100mA versus ~75% for non-Power Save variants - extending battery life in always-on devices like video doorbells.
What protection features are integrated into the TPS92201ADRVR?
The TPS92201ADRVR integrates LED open/short detection, FB resistor open/short response, high-side overcurrent limiting (1.9A–2.16A), thermal shutdown (150°C rising threshold), and input UVLO (2.2V falling). These protections operate autonomously without external components, ensuring robust operation in field-deployed lighting systems.
Can the TPS92201ADRVR operate with input voltage close to the LED forward voltage?
Yes, the TPS92201ADRVR supports 100% duty-cycle operation, enabling dropout as low as VFB + IOUT×RDS(on) ≈ 100mV + 1.5A×220mΩ = 430mV. This allows regulation with VIN as low as VLED + 0.43V - ideal for driving single 2.8V IR LEDs from a 3.3V rail without pre-buck stages.
TPS92201ADRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 0.6V ~ 5.5V
- Current - Output / Channel:
- 1.5A
- Frequency:
- 1.5MHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS92201ADRVR FAQ
1.How can I place an order for TPS92201ADRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92201ADRVR 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 TPS92201ADRVR reliable?
The price and inventory of TPS92201ADRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92201ADRVR is usually 5 days.
3.What payment methods are accepted for TPS92201ADRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92201ADRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92201ADRVR?
TPS92201ADRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92201ADRVR 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 TPS92201ADRVR?
For technical support, including TPS92201ADRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92201ADRVR requirements.
6.How does Aetrix verify that TPS92201ADRVR is sourced from the original manufacturer or authorized distributors?
All TPS92201ADRVR 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 TPS92201ADRVR meets industry standards.
7.What is the process for return or replacement of TPS92201ADRVR?
All TPS92201ADRVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92201ADRVR, 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 TPS92201ADRVR part is unused and in its original packaging.
Return procedure for TPS92201ADRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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