Microchip

MCP16251
Demoboard ARD00797

MCP16251 One-Cell Boost Converter with External UVLO Circuit Reference Design

Topologie: Boost
Eingangsspannung (min.): 0.82 V
Eingangsspannung (max.): 5.50 V
Ausgang 1: 5.50 V / 0.250 A

Erstveröffentlichung am 29.08.2019, Version A vom

Beschreibung

Microchip’s MCP16251 device is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC Converter. The very low quiescent current makes it ideal for battery-powered applications. Furthermore, the device provides a true output disconnect feature while in shutdown (EN = GND). The MCP16251 device consumes less than 0.6 μA from the battery when in the shutdown state. The MCP16251 automatically selects the best operating mode for efficiency: Pulse-Width Modulation (PWM) or Pulse-Frequency Modulation (PFM). The device has a very low (4 μA) quiescent current (not switching, measured at output), a wide input voltage range (0.35 to 5.5V) and a low start-up voltage (0.82V) at a 1 mA load current.

Merkmale

  • Up to 96% Typical Efficiency
  • 4 μA Quiescent Current
  • PFM Switching mode for Light Loads, High Efficiency and Extended Battery Run Time
  • Low Input Start-up Voltage, Typically 0.82V at a 1 mA Load Current
  • Low Shutdown Voltage (continuously operating down to 0.35V input under light loads)
  • True Output Disconnect Shutdown Option
  • 14 μA Typical No Load Input Current

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
L1
(µH)
IR
(A)
IR 1
(A)
ISAT
(A)
ISAT 1
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
RDC1 typ
(mΩ)
RDC1 max.
(mΩ)
fres
(MHz)
fres 1
(MHz)
Poles VPE Muster
744029004 PDF WE-TPC SMT-Speicherdrossel 4.7 4.7 1 1 0.8 0.8 170 200 170 200 65 65
744031004 PDF WE-TPC SMT-Speicherdrossel 4.7 4.7 1.2 1.2 0.9 0.9 90 105 90 105 75 75
744025004 PDF WE-TPC SMT-Speicherdrossel 4.7 4.7 1.35 1.35 1.7 1.7 100 120 100 120 84 84
418121160801 PDF WS-DISV Small Compact SMT Flat Actuator with Top Tape 2.54 mm 1 800
744042004 PDF WE-TPC SMT-Speicherdrossel 4.7 4.7 1.72 1.72 1.65 1.65 70 82 70 82 70 70