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Texas Instruments TPS54062DRBR
- Part No.:
- TPS54062DRBR
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS54062DRBR.pdf
- Description:
- IC REG BUCK ADJ 50MA 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:8,117
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Product details
Overview
TPS54062DRBR 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, 0.8 V ±2% reference, 89 µA non-switching quiescent current, and adjustable 100–400 kHz switching frequency - used in industrial 4–20 mA sensor bias supplies and high-voltage linear regulator replacements.
For engineers reviewing the TPS54062DRBR datasheet, TPS54062DRBR pinout, TPS54062DRBR application, or TPS54062DRBR equivalent, key selection criteria include input voltage range (4.7–60 V), ultra-low IQ (89 µA), internal slow-start (4.1 ms), diode emulation for light-load efficiency, and RT/CLK synchronization capability.
Technical Context
The TPS54062DRBR implements peak current mode control with slope compensation to prevent sub-harmonic oscillation, enabling stable operation with ceramic or aluminum electrolytic output capacitors. Its transconductance error amplifier (102 µS) drives the COMP pin for cycle-by-cycle current limiting and supports external frequency compensation.
It features an internal PLL on the RT/CLK pin for synchronization to external clocks (300–400 kHz), frequency foldback during overload, thermal shutdown at 146°C, and boot UVLO protection ensuring reliable high-duty-cycle operation down to 0.8 V output. The EN pin includes 1.2 µA pull-up and adjustable UVLO hysteresis via external resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.7 V to 60 V - supports wide industrial input rails including 24 V, 36 V, and 48 V systems without pre-regulation. |
| Output Current | 50 mA continuous - sufficient for powering microcontrollers, analog sensors, and isolated interface ICs in standby/bias rails. |
| Quiescent Current | 89 µA (non-switching) - enables multi-year battery life in always-on industrial monitoring nodes. |
| Reference Voltage | 0.8 V ±2% - sets precise output regulation; allows scalable feedback divider design for 1.2 V to 24 V outputs. |
| Switching Frequency | 100–400 kHz (adjustable via RT resistor) - balances efficiency vs. size: lower fSW improves light-load efficiency; higher fSW reduces inductor/capacitor footprint. |
| Enable Threshold | 1.24 V (rising), 1.14 V (falling) - supports programmable undervoltage lockout using two external resistors for system-level brownout control. |
| Thermal Shutdown | 146°C - protects against sustained overloads or poor PCB thermal design while allowing safe transient operation. |
Pinout & Package
TPS54062DRBR is packaged in a 3 mm × 3 mm VSON-8 (DRB) package with exposed thermal pad (Pin 9, GND). This thermally enhanced leadless package delivers RθJA = 40.2°C/W and RθJB = 15.7°C/W, enabling compact high-voltage designs without heatsinks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT (1) | Bootstrap supply node | Connects external capacitor between BOOT and PH to gate-drive the high-side MOSFET; monitored by internal UVLO (2.9 V threshold). |
| VIN (2) | Main power input | Accepts 4.7–60 V; powers internal circuitry and high-side driver; includes –0.3 V to 62 V absolute max rating. |
| EN (3) | Enable control input | Internal 1.2 µA pull-up; float to enable; <1.14 V disables; supports adjustable UVLO with resistor divider. |
| RT/CLK (4) | Frequency programming / sync input | Resistor-to-GND sets fSW (100–400 kHz); >1.3 V triggers PLL sync mode for external clock alignment (300–400 kHz). |
| VSENSE (5) | Feedback inverting input | Compares output voltage (via resistor divider) to 0.8 V reference; supports 0.57 V start threshold and zero-cross detection. |
| COMP (6) | Error amplifier output | Drives PWM comparator; connects external RC network for loop compensation; gm = 102 µS (normal), 26 µS (slow-start). |
| GND (7) | Power and signal ground | Common return for VIN, PH, and internal circuits; must be connected to exposed thermal pad (Pin 9) for thermal and electrical integrity. |
| PH (8) | Power switch node | Source of high-side MOSFET / drain of low-side MOSFET; connects to inductor; minimum on-time = 120 ns. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | 1.5 Ω (HS) + 0.8 Ω (LS) - eliminates external FETs and drivers, reducing BOM count and layout complexity in space-constrained modules. |
| Diode emulation mode | Enables discontinuous conduction mode (DCM) at light loads - improves efficiency below 5 mA without requiring external Schottky diodes. |
| Internal slow-start | 4.1 ms (10%–90%) - prevents inrush current and output overshoot during power-up; implemented via DAC-based reference ramp. |
| Cycle-by-cycle current limit | 75–134 mA threshold - protects against short-circuit and overload by clamping COMP voltage; includes zero-cross detection (–0.7 mA). |
| Stable with low-ESR capacitors | Supports ceramic or aluminum electrolytic output caps - eliminates need for specialized tantalum or polymer capacitors in cost-sensitive designs. |
Applications
| Industrial 4–20 mA Sensors | High-Voltage Linear Regulator Replacement |
|---|---|
Use Scenario: Powering loop-powered temperature, pressure, or flow transmitters operating from 24 V DC industrial buses. IC Role / Device Role / Timing Role: Primary bias supply generating stable 3.3 V or 5 V from up to 60 V input, delivering ≤50 mA with minimal heat dissipation. Use Value: Replaces inefficient 78L05-style linear regulators - cuts power loss by >75% at 24 V input, eliminating thermal derating and enabling sealed enclosure use. |
Use Scenario: Replacing discrete high-input-voltage linear regulators (e.g., LM317HV) in PLC I/O modules and process controllers. IC Role / Device Role / Timing Role: Synchronous buck converter providing regulated 5 V or 12 V output with 89 µA quiescent current and 0.8 V reference accuracy. Use Value: Achieves >85% efficiency at 36 V input → 5 V/50 mA, reducing board temperature rise by >20°C versus linear solutions. |
| Low-Power Standby Supplies | Industrial Process Control & Security Systems |
Use Scenario: Generating always-on 3.3 V rail for real-time clocks, memory backup, or wake-on-event circuitry in energy-harvested or battery-backed systems. IC Role / Device Role / Timing Role: Ultra-low-IQ DC/DC converter maintaining regulation during deep sleep, with 1.7 µA shutdown current when EN is pulled low. Use Value: Extends 100 mAh coin-cell life to >10 years in standby mode - enabled by 89 µA operating IQ and programmable enable hysteresis. |
Use Scenario: Powering analog front-ends, ADCs, and isolation interfaces in smart meters, fire alarm panels, and building automation controllers. IC Role / Device Role / Timing Role: Input-filtered, EMI-optimized buck stage converting unregulated 12–48 V field power to clean 3.3 V/5 V for precision signal chains. Use Value: Diode emulation and internal slope compensation ensure stable regulation under dynamic load steps typical of sensor polling cycles. |
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 |
|---|---|---|---|
| LM5164QPWPRQ1 | Higher 300-mA output, wider 4.5–100 V input, but 100 µA IQ and no diode emulation - requires external MOSFETs for <10 mA loads. | Better suited for automotive body electronics with load dump immunity; less optimal for ultra-low-power industrial sensors. | Select if >100 mA output or AEC-Q100 qualification is required; avoid for battery-operated 4–20 mA loops due to higher IQ. |
| TPS54260DGQR | Same 4.7–60 V input, 600-mA output, 138 µA IQ, MSOP-10 package - lacks VSON-8 thermal performance and has no RT/CLK sync capability. | Targets higher-current industrial supplies; incompatible pinout prevents drop-in replacement in DRB-layout designs. | Choose only when 600-mA output is needed; not suitable for space-constrained VSON footprints or clock-synchronized systems. |
Compared with LM5164QPWPRQ1 and TPS54260DGQR, the TPS54062DRBR uniquely balances ultra-low IQ (89 µA), VSON-8 thermal efficiency (RθJA = 40.2°C/W), and RT/CLK synchronization - making it optimal for compact, long-life, clock-coordinated industrial bias rails.
Availability
TPS54062DRBR is available at Aetrix Electronics and suitable for industrial process control, 4–20 mA sensor biasing, and high-voltage linear regulator replacement applications requiring stable component supply across extended product lifecycles.
Supply support for TPS54062DRBR 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-reliability industrial and automotive power solutions.
The TPS54062DRBR belongs to TI's high-input-voltage DC/DC converter family designed specifically for industrial bias rails, sensor interfaces, and legacy linear regulator upgrades - emphasizing ultra-low quiescent current, wide VIN range, and robust fault protection.
FAQ
What is the maximum input voltage supported by the TPS54062DRBR?
The TPS54062DRBR supports an absolute maximum input voltage of 62 V on the VIN pin, with recommended operation from 4.7 V to 60 V. This makes it suitable for industrial 24 V, 36 V, and 48 V bus systems, including transient-tolerant applications where input spikes may occur. The device includes internal undervoltage lockout set at 4.53 V, adjustable via the EN pin.
Does the TPS54062DRBR require an external bootstrap diode?
No, the TPS54062DRBR integrates the bootstrap recharge diode internally. A single external capacitor between BOOT and PH is sufficient to drive the high-side MOSFET gate. This eliminates the need for an external Schottky diode, reducing component count and PCB area - a key advantage over discrete or older controller-based buck solutions.
Can the TPS54062DRBR synchronize to an external clock?
Yes, the TPS54062DRBR supports external clock synchronization via its RT/CLK pin. When driven above 1.3 V with a square wave (300–400 kHz), the internal PLL engages and locks to the falling edge of the external clock. This enables deterministic timing in multi-rail systems and reduces EMI through clock harmonization - a feature not present in many competing 50-mA converters.
What output capacitor types are compatible with the TPS54062DRBR?
The TPS54062DRBR is stable with both ceramic and low-cost aluminum electrolytic output capacitors - no special ESR requirements. This flexibility allows designers to optimize for cost (aluminum), size (ceramic), or ripple performance without compromising loop stability, unlike many current-mode controllers that mandate specific capacitor families.
How does the TPS54062DRBR achieve ultra-low quiescent current?
The TPS54062DRBR achieves 89 µA non-switching quiescent current through optimized internal biasing, diode emulation mode (disabling low-side FET at light loads), and intelligent gate drive circuitry. In shutdown (EN = low), it draws only 1.7 µA - critical for battery-backed or energy-harvested systems where micropower operation directly impacts service life.
TPS54062DRBR 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)
TPS54062DRBR FAQ
1.How can I place an order for TPS54062DRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54062DRBR 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 TPS54062DRBR reliable?
The price and inventory of TPS54062DRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54062DRBR is usually 5 days.
3.What payment methods are accepted for TPS54062DRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54062DRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54062DRBR?
TPS54062DRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54062DRBR 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 TPS54062DRBR?
For technical support, including TPS54062DRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54062DRBR requirements.
6.How does Aetrix verify that TPS54062DRBR is sourced from the original manufacturer or authorized distributors?
All TPS54062DRBR 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 TPS54062DRBR meets industry standards.
7.What is the process for return or replacement of TPS54062DRBR?
All TPS54062DRBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54062DRBR, 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 TPS54062DRBR part is unused and in its original packaging.
Return procedure for TPS54062DRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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