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  • L6985F
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L6985F

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Switching Voltage Regulators 38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current

Manufacturer : STMicroelectronics, Inc
Package/Case : HTSSOP16
Product Categories : Voltage Regulators - DC DC Switching Regulators
Datasheet: L6985F Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 1200

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L6985F Product Details

The L6985F is a step-down monolithic switching regulator able to deliver up to 0.5 A DC. The output voltage adjustability ranges from 0.85V to VIN. Thanks to the P-channel MOSFET high-side power element, the device features 100% of the duty cycle operation. The wide input voltage range meets the specification for the 5 V, 12 V and 24 V power supplies. The “Low Consumption Mode” (LCM) is designed for applications active during the idle mode, so it maximizes the efficiency at the light-load with the controlled output voltage ripple. The “Low Noise Mode” (LNM) makes the switching frequency constant overload current range, meeting the low noise application specification. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA). The RST open collector output can also implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at the medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing on both power elements implements effective constant current protection.

Feature

  • 0.5 A DC output current
  • 4 V to 38 V operating input voltage
  • Low consumption mode or low noise mode
  • 30 μA IQ at light-load (LCM VOUT = 3.3 V)
  • 8 μAIQ-SHTDWN
  • Output voltage adjustable from 0.85 V to VIN
  • Adjustable fSW (250 kHz - 2 MHz)
  • Embedded output voltage supervisor

Technical Parameters

  • Function
  • Step-Down
  • Output Configuration
  • Positive
  • Topology
  • Buck
  • Output Type
  • Adjustable
  • Number of Outputs
  • 1
  • Voltage Input (Min)
  • 4V
  • Voltage Input (Max)
  • 38V
  • Voltage Output (Min/Fixed)
  • 0.85V
  • Voltage Output (Max)
  • 38V
  • Current Output
  • 500mA
  • Frequency Switching
  • 250kHz ~ 2MHz
  • Synchronous Rectifier
  • Yes
  • Operating Temperature
  • -40??C ~ 150??C (TJ)
  • Mounting Type
  • Surface Mount
  • Package / Case
  • 16-TSSOP (0.173, 4.40mm Width) Exposed Pad
  • Supplier Device Package
  • 16-TSSOP

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