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3-V to 65-V, 0.6-A ultra-small synchronous buck converter with 4 μA IQ

US ECCN: EAR99 US/Local Export Classification Number

Inventory: 222  
Limit:  50

Quality information

Lead finish / Ball material Call TI
MSL rating / Peak reflow Call TI
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
VQFN-HR (RPE) | 9 250 | SMALL T&R
-40 to 150
Package | Pins VQFN-HR (RPE) | 9
Package qty | Carrier: 250 | SMALL T&R
Operating temperature range (°C) -40 to 150
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Features for the LMR36506

  • Designed for rugged industrial applications:
    • Junction temperature range –40°C to +150°C
    • Input transient protection up to 70 V
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Low EMI and minimized switch node ringing
    • Adjustable fixed output voltage options available
  • Suited for scalable industrial power supplies:
    • Pin compatible with LMR36503 (65 V, 300 mA)
    • Adjustable switching frequency: 200 kHz to 2.2 MHz with RT pin variant
  • Minimized solution size and cost:
    • Highest power density with internal compensation and reduced external component count
    • Ultra-small, 2-mm × 2-mm HotRod™ package with wettable flanks
  • High efficiency across load range with low power dissipation:
    • 93% peak efficiency at 400 kHz (12 VIN, 3.3 VOUT fixed)
    • 90% peak efficiency at 400 kHz (24 VIN, 3.3 VOUT fixed)
  • Ultra-low operating quiescent current at no load
    • 4 µA at 24 VIN to 3.3 VOUT (fixed output option)

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Description for the LMR36506

The LMR36506 is the industry’s smallest 65 V, 0.6 A synchronous step-down DC/DC converter in 2-mm x 2-mm HotRod™ package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and support fixed 3.3 V and other adjustable output voltages. The transient tolerance reduces the necessary design effort to protect against input overvoltage and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36506 uses the peak current mode control architecture with internal compensation to maintain stable operation with minimal output capacitance. The LMR36506 with the right resistor selection from the RT pin to ground can be externally programmed to any desired switching frequency of operation over a wide range from 200 kHz to 2.2 MHz. The precision EN/UVLO feature allows precise control of the device during the start-up and shutdown. The power-good flag, with built-in glitch filter and delayed release, offers a true indication of the system status, eliminating the requirement for an external supervisor. The compact solution size and rich feature set of LMR36506 simplifies implementation for a wide range of industrial applications.


Qty Price (USD)
1-99 1.743
100-249 1.528
250-999 1.071
1,000+ 0.863