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Texas Instruments TPS54062DRBT
- Part No.:
- TPS54062DRBT
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS54062DRBT.pdf
- Description:
- IC REG BUCK ADJ 50MA 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:2,899
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Product details
Overview
TPS54062DRBT from Texas Instruments is a 4.7-V to 60-V input, 50-mA synchronous step-down DC/DC converter with integrated high-side (1.5 Ω) and low-side (0.8 Ω) MOSFETs, 89 µA non-switching quiescent current, adjustable 100–400 kHz switching frequency, and 0.8 V ±2% internal voltage reference. It serves as a compact, low-IQ bias supply in industrial sensors and process control systems.
For engineers reviewing the TPS54062DRBT datasheet, TPS54062DRBT pinout, TPS54062DRBT application, or TPS54062DRBT equivalent, key selection considerations include its wide 4.7–60 V input range, diode-emulation light-load efficiency mode, EN pin programmable UVLO, internal slow-start (4.1 ms), and compatibility with ceramic or aluminum electrolytic output capacitors.
Technical Context
The TPS54062DRBT employs peak current-mode control with slope compensation to ensure stability across duty cycles and prevent subharmonic oscillation. Its transconductance error amplifier (102 µS typical) drives the COMP pin for cycle-by-cycle current limiting and precise regulation against load and line transients.
It features an internal PLL on the RT/CLK pin enabling synchronization to external clocks (300–400 kHz), frequency foldback during overload, thermal shutdown at 146°C, and boot-UVLO protection to sustain high-duty-cycle operation. The device supports adjustable UVLO via resistor divider on the EN pin and integrates the bootstrap recharge diode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.7 V to 60 V - Enables direct replacement of high-voltage linear regulators in industrial power rails. |
| Output Current | 50 mA continuous - Sufficient for powering microcontrollers, analog front-ends, and 4–20 mA sensor circuitry. |
| Quiescent Current | 89 µA (non-switching) - Minimizes standby power loss in always-on industrial monitoring nodes. |
| Switching Frequency | 100–400 kHz (adjustable via RT resistor) - Balances inductor size, efficiency, and EMI filtering requirements. |
| Voltage Reference | 0.8 V ±2% - Enables accurate output regulation down to 0.8 V and stable scaling to higher voltages via feedback divider. |
| Enable Threshold | 1.24 V (rising), 1.14 V (falling) - Allows precise, resistor-programmable undervoltage lockout for system-level brownout control. |
| Thermal Shutdown | 146°C - Provides robust overtemperature protection without requiring external thermal sensing. |
Pinout & Package
VSON-8 (DRB) package: 3 mm × 3 mm body, exposed thermal pad (Pin 9, GND-connected), 0.5 mm pitch. Requires PCB thermal pad connection for thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT (1) | Bootstrap gate drive node | Supplies gate voltage for high-side MOSFET; requires external capacitor between BOOT and PH; monitored by internal UVLO. |
| VIN (2) | Main power input | Accepts 4.7–60 V; powers internal circuitry and high-side switch; includes 62 V absolute max rating. |
| EN (3) | Enable control with UVLO programming | Internal 1.2 µA pull-up enables floating operation; threshold hysteresis (3.5 µA) supports resistor-based UVLO adjustment. |
| RT/CLK (4) | Frequency setting / clock sync input | Resistor-to-GND sets fSW; >1.3 V triggers PLL sync mode; supports external clock synchronization (300–400 kHz). |
| VSENSE (5) | Feedback input | Inverting input of error amplifier; compares output voltage (via resistor divider) to 0.8 V reference for regulation. |
| COMP (6) | Error amplifier output | Drives PWM comparator; connects to external RC compensation network for loop stability. |
| GND (7) | Power and signal ground | Common return for VIN, PH, and internal circuits; must be connected to thermal pad in VSON package. |
| PH (8) | Power switch node | Connects to source of high-side MOSFET and drain of low-side MOSFET; drives external inductor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | 1.5 Ω (HS) and 0.8 Ω (LS) RDS(on) enable self-contained 50-mA buck conversion without external switches. |
| Diode emulation mode | Disables low-side MOSFET during light load to eliminate reverse conduction loss, improving efficiency at <10 mA. |
| Internal slow-start | 4.1 ms (10%–90%) controlled by DAC-based ramp - prevents inrush current and ensures orderly power-up sequencing. |
| Ceramic capacitor compatible | Stable with low-ESR ceramic output caps - reduces solution size and eliminates need for bulk aluminum electrolytics. |
| Cycle-by-cycle current limit | 134 mA typical high-side current limit - provides immediate overcurrent protection without external sensing. |
Applications
| Industrial 4–20 mA Sensors | High-Voltage Bias Supplies |
|---|---|
|
Use Scenario: Powering loop-powered temperature, pressure, or flow transmitters operating from 12–48 V DC industrial buses. IC Role / Device Role / Timing Role: Primary DC/DC bias regulator delivering stable 3.3 V or 5 V to sensor ASICs and signal conditioning circuitry. Use Value: 89 µA quiescent current preserves loop compliance margin; 60 V input withstands surge transients per IEC 61000-4-5. |
Use Scenario: Replacing inefficient 78Lxx linear regulators in PLC I/O modules and metering equipment with 24–60 V inputs. IC Role / Device Role / Timing Role: Synchronous buck converter generating local 3.3 V or 5 V rails from unregulated high-voltage bus. Use Value: 90%+ efficiency at 50 mA eliminates heat sink requirement; integrated MOSFETs reduce BOM count by 4 components. |
| Process Control Security Systems | Low-Power Standby Supplies |
|
Use Scenario: Providing always-on 3.3 V power to tamper-detection circuits, secure microcontrollers, and real-time clocks in field devices. IC Role / Device Role / Timing Role: Ultra-low-IQ primary regulator maintaining critical subsystems during main power interruption. Use Value: 1.7 µA shutdown current extends battery backup duration; EN pin enables wake-on-event functionality. |
Use Scenario: Generating auxiliary 5 V or 3.3 V for MCU sleep modes, RTCs, and memory retention in energy-harvesting edge nodes. IC Role / Device Role / Timing Role: High-input-voltage buck converter optimized for intermittent, low-duty-cycle operation. Use Value: Diode emulation mode achieves >85% efficiency at 1 mA load; 4.7 V minimum input supports degraded battery operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164DRCT | Wider 3–100 V input, 150 mA output, 1.5 µA shutdown IQ, but 250 µA operating IQ - higher light-load quiescent draw. | Better suited for higher-current industrial supplies (>100 mA); less optimal for ultra-low-power sensor bias rails. | Choose LM5164DRCT when input exceeds 60 V or output current >50 mA is required; verify loop compensation due to different control architecture. |
| TPS54260DGQR | Same 4.7–60 V input, 600 mA output, 138 µA operating IQ, MSOP-8 package - higher current, higher IQ, larger footprint. | Targets higher-power applications like motor drivers or multi-rail systems where 50 mA is insufficient. | Choose TPS54260DGQR only if ≥600 mA output is needed; avoid for 50-mA designs due to unnecessary cost, size, and quiescent penalty. |
Compared with LM5164DRCT and TPS54260DGQR, the TPS54062DRBT delivers the lowest operating quiescent current (89 µA) and smallest solution size for ≤50 mA industrial bias applications, while maintaining full 60 V input capability and integrated thermal protection.
Availability
TPS54062DRBT is available at Aetrix Electronics and suitable for industrial process control, 4–20 mA sensor powering, and high-voltage linear regulator replacement applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS54062DRBT 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 ICs, with decades of industrial-grade reliability and broad technical documentation support.
The TPS54062DRBT belongs to TI's high-voltage, low-IQ buck converter product line, designed specifically for space-constrained, energy-sensitive industrial and process control applications demanding wide input range and robust fault protection.
FAQ
What is the minimum input voltage required for TPS54062DRBT to start switching?
The TPS54062DRBT has an internally set undervoltage lockout (UVLO) start threshold of 4.53 V on the VIN pin. When VIN rises above this level and the EN pin voltage exceeds 1.24 V, the device initiates soft-start. This ensures reliable startup from standard 5 V or higher industrial rails while rejecting noise-induced false triggering below 4.5 V.
Can TPS54062DRBT operate with ceramic output capacitors?
Yes, the TPS54062DRBT is explicitly designed to be stable with low-ESR ceramic output capacitors - no additional ESR is required. Its current-mode control architecture and internal compensation allow direct use of 10–22 µF X5R/X7R ceramics, reducing board area and eliminating aluminum electrolytic aging concerns in long-life industrial deployments.
How is the switching frequency set on TPS54062DRBT?
The switching frequency of the TPS54062DRBT is set by connecting a resistor from the RT/CLK pin to GND. With RRT = 510 kΩ, fSW is typically 240 kHz. The relationship is inverse: lower resistance increases frequency (up to 400 kHz), higher resistance decreases it (down to 100 kHz). The pin voltage remains ~0.53 V during resistor programming mode.
Does TPS54062DRBT support external clock synchronization?
Yes, the TPS54062DRBT supports external clock synchronization via the RT/CLK pin. When driven with a square wave exceeding the 1.3 V PLL upper threshold, the internal oscillator disables and the device synchronizes to the external clock edges (300–400 kHz range). This enables deterministic EMI reduction and multi-regulator phase alignment in dense PCB layouts.
What protection features does TPS54062DRBT include?
The TPS54062DRBT integrates cycle-by-cycle current limiting, thermal shutdown at 146°C, BOOT UVLO, output overvoltage protection (109% of nominal), and frequency foldback during overload. These features operate autonomously without external components, ensuring robust operation in harsh industrial environments where transient overloads or thermal stress may occur.
TPS54062DRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.7V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 58V
- Current - Output:
- 50mA
- Frequency - Switching:
- 100kHz ~ 400kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
TPS54062DRBT FAQ
1.How can I place an order for TPS54062DRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54062DRBT 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 TPS54062DRBT reliable?
The price and inventory of TPS54062DRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54062DRBT is usually 5 days.
3.What payment methods are accepted for TPS54062DRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54062DRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54062DRBT?
TPS54062DRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54062DRBT 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 TPS54062DRBT?
For technical support, including TPS54062DRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54062DRBT requirements.
6.How does Aetrix verify that TPS54062DRBT is sourced from the original manufacturer or authorized distributors?
All TPS54062DRBT 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 TPS54062DRBT meets industry standards.
7.What is the process for return or replacement of TPS54062DRBT?
All TPS54062DRBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS54062DRBT, 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 TPS54062DRBT part is unused and in its original packaging.
Return procedure for TPS54062DRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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