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6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ

Inventory: 27,752
Custom reel may be available

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Packaging information

Package | Pins HSOIC (DDA) | 8
Operating temperature range (°C) S (-40 to 150)
Package qty | Carrier: 2,500 | LARGE T&R
Custom reel may be available
View more packaging information

Quality information

RoHS Yes
Lead finish / Ball material NIPDAUAG
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • Designed for reliable and rugged applications
    • Wide input voltage range of 6 V to 100 V
    • Junction temperature range: –40°C to+150°C
    • Fixed 3-ms internal soft-start timer
    • Peak and valleycurrent-limit protection
    • Input UVLO and thermal shutdownprotection
  • Suited for scalable Industrial power supplies and battery packs
    • Lowminimum on- and off-times of 50 ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • 10.5-µAno-load input quiescent current
    • 3-µA shutdown quiescentcurrent
    • Optimized for CISPR 32 EMIstandard
  • Integration reduces solution size and cost
    • COT mode control architecture
    • Integrated 0.725-ΩNFET buck switch supports wide duty-cycle range
    • Integrated 0.34-Ω NFETsynchronous rectifier eliminates external Schottky diode
    • 1.2-V internal voltagereference
    • No loop compensation components
    • Internal VCC biasregulator and boot diode
    • Open-drain power goodindicator
    • 8-Pin SOIC package withPowerPAD™
  • Create a custom design using WEBENCH® power designer

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The LM5164 synchronous buck converter isdesigned to regulate over a wide input voltage range, minimizing the need for external surgesuppression components. A minimum controllable on-time of 50 ns facilitates large step-downconversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails forreduced system complexity and solution cost. The LM5164 operates during input voltage dips as low as 6 V, at nearly 100%duty cycle if needed, making it an excellent choice for wide inputsupply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LM5164 delivers up to1-A of outputcurrent. A constant on-time (COT) control architecture provides nearly constant switching frequencywith excellent load and line transient response. Additional features of the LM5164 include ultra-lowIQ and diode emulation mode operation for high light-load efficiency,innovative peak and valley overcurrent protection, integrated VCC bias supply and bootstrap diode,precision enable and input UVLO, and thermal shutdown protection with automatic recovery. Anopen-drain PGOOD indicator provides sequencing, fault reporting, and output voltagemonitoring.

The LM5164 is available in a thermally-enhanced, 8-pin SOPowerPAD™ package. Its 1.27-mm pin pitch providesadequate spacing for high-voltage applications.

Qty Price
1-99 $2.719
100-249 $2.382
250-999 $1.670
1,000+ $1.346