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Texas Instruments LMR36506R5RPER
- Part No.:
- LMR36506R5RPER
- Manufacturer:
- Texas Instruments
- Package:
- 9-PowerVFQFN
- Datasheet:
-
LMR36506R5RPER.pdf
- Description:
- IC REG BUCK 5V 600MA 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
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Product details
Overview
LMR36506R5RPER from Texas Instruments is a 5-V fixed-output, 0.6A synchronous buck converter in a 2mm × 2mm HotRod™ QFN (RPE) package, operating from 3.0V to 65V input with 4µA no-load quiescent current and peak efficiency of 90% at 24VIN/5VOUT. It delivers rugged industrial power for field transmitters, HVAC sensors, and garden tools requiring surge immunity per IEC 61000-4-5 and stable operation up to +150°C junction temperature.
For engineers reviewing the LMR36506R5RPER datasheet, LMR36506R5RPER pinout, LMR36506R5RPER application, or LMR36506R5RPER equivalent, key selection factors include its 5-V fixed output accuracy (±1.5%), RT-programmable switching frequency (200kHz–2.2MHz), precision EN/UVLO threshold (1.263V), PGOOD flag with 2.16ms activation delay, and internal compensation enabling minimal external components.
Technical Context
The LMR36506R5RPER uses peak current mode control with internal compensation, supporting stable regulation across wide input voltage (3.0V–65V) and load (0–0.6A) ranges while minimizing required output capacitance. Its architecture includes automatic frequency foldback during dropout and integrated soft-start (2.58ms typical).
It integrates a precision enable comparator with 0.35V hysteresis, a glitch-filtered open-drain PGOOD output (107% OV / 94% UV thresholds), and thermal shutdown with 10°C hysteresis (158°C trip). The VOUT/BIAS pin is internally connected to the 5-V output, eliminating external feedback resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V (falling threshold) to 65V - supports wide industrial rails and withstands 70V transients without damage. |
| Output Voltage | Fixed 5.0V ±1.5% - eliminates feedback resistor network and reduces BOM count. |
| Max Output Current | 0.6A continuous - sufficient for powering microcontrollers, sensors, and analog front-ends in compact systems. |
| Quiescent Current | 4µA at 24VIN → 5VOUT - enables multi-year battery life in always-on industrial IoT nodes. |
| Switching Frequency | 200kHz–2.2MHz via RT pin - allows EMI optimization and inductor size reduction across applications. |
| Junction Temperature | –40°C to +150°C - rated for under-hood, factory floor, and high-ambient embedded environments. |
| Package | 2mm × 2mm HotRod™ QFN (RPE, 9-pin) - ultra-small footprint with corner anchor pins for robust solder joint reliability. |
Pinout & Package
LMR36506R5RPER is housed in a 2mm × 2mm VQFN-HR (RPE) package with wettable flank leads for optical solder inspection and enhanced thermal performance. The 9-pin layout features exposed thermal pad (GND-connected) and optimized power/ground routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RT | Frequency programming input | Connects to GND/VCC/resistor to set switching frequency from 200kHz to 2.2MHz; must not float. |
| 2 - PGOOD | Open-drain power-good flag | Signals regulated output (107%/94% thresholds); includes 25µs glitch filter and 2.16ms activation delay. |
| 3 - EN/UVLO | Enable and input undervoltage lockout | 0.4V wake-up threshold; 1.263V precise turn-on with 0.35V hysteresis; supports direct VIN connection. |
| 4 - VIN | Main input supply | Accepts 3.0V–65V; requires local high-quality bypass capacitor; withstands 70V transients. |
| 5 - SW | Switch node | Connects to power inductor; drives internal high-side MOSFET (920mΩ max RDS(on)) and low-side (460mΩ max). |
| 6 - BOOT | Bootstrap supply | Requires 100nF ceramic capacitor to SW; enables high-side gate drive; UVLO triggers at 2.3V. |
| 7 - VCC | Internal LDO output | 3.15V internal bias rail (65–240mA limit); powers control circuitry; decouple with 1µF to GND. |
| 8 - VOUT/BIAS | Fixed 5-V output node | Internally tied to regulated 5V output; serves as output and logic supply for PGOOD; no external divider needed. |
| 9 - GND | Power ground | Thermal and electrical reference; connects to exposed pad; requires short/wide trace to CIN. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (4µA) | Enables >10-year battery life in always-on sensor nodes powered from coin cells or energy harvesters. |
| 70V transient tolerance | Eliminates need for external TVS or overvoltage clamping in 24/48V industrial bus applications. |
| Internal compensation | Reduces external component count by ≥3 parts (no compensation network required) and simplifies layout. |
| IEC 61000-4-5 compliant | Meets 2kV surge immunity requirements without additional protection circuitry in field transmitter designs. |
| PGOOD with delayed release | Replaces external reset supervisor ICs; built-in 25µs glitch filter prevents false resets during load transients. |
Applications
| Factory Automation Sensors | Building HVAC Controllers |
|---|---|
Use Scenario: Powering 4–20mA loop-powered field transmitters in chemical plants with 24V DC supply and frequent load dumps. IC Role / Device Role / Timing Role: Primary DC/DC regulator delivering stable 5V to ADC, MCU, and signal conditioning circuitry. Use Value: 70V transient tolerance and –40°C to +150°C operation ensure uninterrupted sensing during brownouts and motor switching events. |
Use Scenario: Supplying 5V to microcontroller, temperature/humidity sensor, and valve driver in wall-mounted HVAC thermostats. IC Role / Device Role / Timing Role: Compact, efficient step-down converter replacing discrete LDO+switcher solutions in space-constrained enclosures. Use Value: 2mm × 2mm footprint and internal compensation reduce PCB area by >40% versus comparable buck solutions. |
| Garden Power Tool Control | Fire Safety Smoke Detectors |
Use Scenario: Regulating 5V from 18–60V Li-ion battery packs in cordless drills and hedge trimmers with high pulse loads. IC Role / Device Role / Timing Role: High-efficiency buck converter maintaining 5V rail during motor startup surges and battery voltage sag. Use Value: 90% peak efficiency at 24VIN/5VOUT and 0.6A capability extend runtime while limiting thermal rise in plastic housings. |
Use Scenario: Providing ultra-low-power 5V supply to smoke sensor ASIC and RF transceiver in battery-backed fire alarm modules. IC Role / Device Role / Timing Role: Always-on power management IC enabling multi-year operation on primary lithium batteries. Use Value: 4µA quiescent current minimizes self-discharge, supporting 10+ year shelf life and compliance with UL 217 standby current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36506R3RPER | 3.3V fixed output; identical package, pinout, and specs except VOUT/BIAS voltage. | Used where system logic requires 3.3V instead of 5V; no change to PCB layout or external components. | Select when target load operates at 3.3V; shares same thermal and EMI performance. |
| LMR36506RRPER | Adjustable output (via FB pin); requires external resistor divider; same IQ, efficiency, and transient rating. | Suitable for custom voltage rails (e.g., 2.5V, 3.6V) or designs needing flexibility across multiple product variants. | Choose when output voltage must be tuned post-design or shared across multiple SKUs; adds two resistors. |
Compared with LMR36506R3RPER and LMR36506RRPER, the LMR36506R5RPER offers plug-and-play 5V regulation without external feedback, reducing design time and component cost-ideal for volume production of 5V-powered industrial edge devices.
Availability
LMR36506R5RPER is available at Aetrix Electronics and suitable for factory automation sensors, building HVAC controllers, and garden power tool control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for LMR36506R5RPER 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 designing analog and embedded processing chips for industrial, automotive, and communications markets, with over 90 years of innovation in power management ICs.
The LMR36506R5RPER belongs to TI's LMR36506 family of ultra-small, high-voltage buck converters engineered for rugged industrial power supplies where size, efficiency, and reliability are critical-especially in field transmitters, process sensors, and battery-powered tools.
FAQ
What is the output voltage accuracy of the LMR36506R5RPER?
The LMR36506R5RPER provides a fixed 5.0V output with initial accuracy of ±1.5% over temperature and line (–40°C to +150°C, 3.6V–65V input). This is specified in FPWM mode and ensures reliable operation for 5V-tolerant microcontrollers and analog ICs without external trimming.
Does the LMR36506R5RPER require external compensation components?
No, the LMR36506R5RPER features internal compensation optimized for stability with minimal output capacitance. This eliminates the need for external Type-II or Type-III compensation networks, reducing BOM count and layout complexity compared to traditional buck controllers.
Can the LMR36506R5RPER operate with input voltages below 3.6V?
The LMR36506R5RPER has a falling threshold of 3.0V, allowing operation down to 3.0V after startup. However, the recommended minimum operating input voltage is 3.6V; operation below this may result in reduced output regulation margin or dropout behavior depending on load and ambient conditions.
How does the PGOOD function behave during startup and fault conditions in the LMR36506R5RPER?
The LMR36506R5RPER's PGOOD pin remains low during startup until VOUT reaches 94% of 5V (4.7V), then asserts high after a 2.16ms delay. It goes low again during overvoltage (>5.25V), undervoltage (<4.7V), thermal shutdown, or current limit-ensuring accurate system-level power sequencing and fault detection.
Is the LMR36506R5RPER pin-compatible with other members of the LMR36506 family?
Yes, all LMR36506 variants-including LMR36506R5RPER, LMR36506R3RPER, and LMR36506RRPER-share identical 9-pin RPE (2mm × 2mm) package and pinout. Only the VOUT/BIAS or FB pin functionality differs; no PCB redesign is needed when migrating between fixed 3.3V, fixed 5V, or adjustable versions.
LMR36506R5RPER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 65V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (2x2)
LMR36506R5RPER FAQ
1.How can I place an order for LMR36506R5RPER through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR36506R5RPER 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 LMR36506R5RPER reliable?
The price and inventory of LMR36506R5RPER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR36506R5RPER is usually 5 days.
3.What payment methods are accepted for LMR36506R5RPER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR36506R5RPER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR36506R5RPER?
LMR36506R5RPER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR36506R5RPER 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 LMR36506R5RPER?
For technical support, including LMR36506R5RPER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR36506R5RPER requirements.
6.How does Aetrix verify that LMR36506R5RPER is sourced from the original manufacturer or authorized distributors?
All LMR36506R5RPER 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 LMR36506R5RPER meets industry standards.
7.What is the process for return or replacement of LMR36506R5RPER?
All LMR36506R5RPER units undergo pre-shipment inspection (PSI). If there is an issue with LMR36506R5RPER, 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 LMR36506R5RPER part is unused and in its original packaging.
Return procedure for LMR36506R5RPER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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