降圧コンバータ

主な特徴

• 3.5 V to 38 V operating input voltage
• Output voltage from 0.85 V to VIN
• 3.3 V and 5 V fixed output voltage versions
• 3 A DC output current
• 17 μA operating quiescent current
• Internal compensation network
• Two different versions:
  • LCM for high efficiency at light loads
  • LNM for noise sensitive applications
• 2 μA shutdown current
• Internal soft-start
• 有効にする
• Overvoltage protection
• Thermal protection
• Output voltage sequencing
• QFN16 package
• 200 kHz to 2.2 MHz programmable switching frequency; stable with low ESR capacitor
• Optional spread spectrum for improved EMC
• Power good
• Synchronization to external clock for LNM devices

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主な特徴

• 4 A peak output current
• From 2.8 V to 5.5 V input voltage
• Output voltage adjustable from 0.8 V
• 1.5 MHz switching frequency
• Internal soft-start and enable
• Integrated 60 mΩ and 45 mΩ power MOSFETs
• All ceramic capacitors
• Power Good (POR)
• Cycle-by-cycle current limiting
• Current foldback short-circuit protection
• RoHS compliant

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主な特徴

• AECQ100 qualification
• 2 A DC output current
• 4 V to 38 V operating input voltage
• Low consumption mode or low noise mode
• Programmable I_SKIP current
• 30 μA IQ at light load (LCM V_IN  = 12 V and V_OUT  = 3.3 V)
• 8 μA I_Q-SHTDWN
• Adjustable f_SW (250 kHz - 2 MHz)
• Output voltage adjustable from 0.85 V to V_IN
• Embedded output voltage supervisor
• Synchronization (in all f_SW range)
• Adjustable soft-start time
• Internal current limiting
• Overvoltage protection
• Peak current mode architecture
• R_DS(on)HS  = 180 mΩ; R_DS(on)LS  = 150 mΩ
• Thermal shutdown
• RoHS and WEEE compliant

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主な特徴

• 4.5 V to 60 V input voltage
• Step-down (buck) conversion
• 3.3 V output voltage
• Up to 3 A DC output current
• 500 kHz switching frequency
• 3.5 ms programmed soft-start
• Compliant with ceramic output capacitors
• 180° out-of-phase synchronization available
• Auto recovery overcurrent and thermal protection
• RoHS and China RoHS compliant
• WEEE compliant (2012/19/UE RAEE II)

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主な特徴

• 3 A DC output current
• From 4.5 V to 38 V range input voltage
• Output voltage adjustable from 0.6 V
• 250 kHz switching frequency programmable up to 1 MHz
• Internal soft-start and enable
• Low dropout operation: 100% duty cycle
• Voltage feed-forward
• Zero load current operation
• Overcurrent and thermal protection
• RoHS compliant

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主な特徴

• 3.3 V output voltage
• 3 A DC output current
• 4.5 V to 60 V input voltage
• 500 kHz switching frequency
• 3.5 ms programmed soft-start
• VBIAS switch-over for improved efficiency at light load
• 180° out of phase synchronization available
• Open drain PGOOD available
• Auto recovery overcurrent and thermal protection
• RoHS compliant

さらに表示

主な特徴

• 4 V to 38 V operating input voltage
• Low consumption mode or low noise mode
• 30 µA I_Q at light load (LCM V_OUT = 3.3 V)
• 5 µA I_Q-SHTDWN
• Adjustable f_SW (250 kHz - 2 MHz)
• Output voltage adjustable from 0.85 V to V_IN
• Embedded output voltage supervisor
• Synchronization
• Adjustable soft-start time
• Internal current limiting
• Overvoltage protection
• Output voltage sequencing
• Peak current mode architecture
• R_DS(on)HS = 180 mΩ; R_DS(on)LS = 150 mΩ
• Thermal shutdown
• RoHS compliant

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主な特徴

• 1.8 V to 5.5 V input operating range
• Up to 400 mA output current capability
• Tiny external components: L=2.2 µH typ
• Selectable output voltages: 1.8 V to 2.8 V
• Output voltage Power Good
• Dynamic output voltage selection (D0, D1)
• Suitable for the following applications:
  • Wearable applications
  • Personal tracking monitors
  • Smart watches, sport bands
  • Energy harvesting, wireless sensors
  • Wearable and fitness accessories
  • Industrial sensors, portable low power devices
  • Single cell Li-Ion battery applications
  • Bluetooth® low energy
  • ZigBee®
• WEEE and RoHS compliant (hardware only)

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主な特徴

• 94% typical efficiency at 1 mA load (V_IN =3.6 V, V_OUT =3.3 V)
• 1.8 V to 5.5 V input operating range
• Up to 400 mA output current capability
• Tiny external components: L=2.2 µH typ.
• Selectable output voltages: 1.8 V to 3.3 V
• Output voltage Power Good
• Dynamic output voltage selection (D0, D1)
• Suitable for the following applications:
  • Wearable applications
  • Personal tracking monitors
  • Smart watches, sport bands
  • Energy harvesting, wireless sensors
  • Wearable and fitness accessories
  • Industrial sensors, portable low power devices
  • Single cell Li-Ion battery applications
  • Bluetooth^® low energy
  • ZigBee^®
• Hardware is WEEE and RoHS compliant

さらに表示

主な特徴

• 1.8 V to 5.5 V input operating range
• Up to 400 mA output current capability
• Tiny external components: L=2.2 µH typ.
• Selectable output voltages: 1.9 V to 2.8 V
• Output voltage Power Good
• Dynamic output voltage selection (D0, D1)
• Suitable for the following applications:
  • Wearable applications
  • Personal tracking monitors
  • Smart watches, sport bands
  • Energy harvesting, wireless sensors
  • Wearable and fitness accessories
  • Industrial sensors, portable low power devices
  • Single cell Li-Ion battery applications
  • Bluetooth® low energy
  • Zigbee
• WEEE and RoHS compliant (hardware only)

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主な特徴

• Dual channel, independent, step-down regulators with integrated synchronous MOSFETs
• Output current up to 3 A each channel
• Channels can be paralleled to obtain a higher current supply
• Input voltage range from 6 to 14 V
• Digitally selectable fixed output voltages: 3.3 - 5 - 9 V
• PWM programmable output voltages with 20 mV steps over a range of 3.3 - 11 V
• Outputs protected against short-circuit and overcurrent
• Input and output voltage monitors (UV or OV) and power good signals
• Thermal protection thanks to the integrated thermal sensor
• Additional 3.3 V output by internal linear regulator
• Watchdog, reset, in/out synchronisation for available converters
• Board size: 84.7 mm x 81.3 mm
• Maximum component height: 10 mm
• Automotive grade qualified ST components
• Included in the AutoDevKit™ initiative
• CE certified
• RoHS and China RoHS compliant
• WEEE compliant

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主な特徴

• Adjustable current-mode pulse width modulation (PWM) synchronous, step-down DC-DC converter with inhibit function
• Input voltage, Vin: 2.5 V to 5.5 V
• Output voltage, Vout: 3.3 V
• Output current, Iout: 1.5 A
• Switching frequency: 1.5 MHz
• RoHS compliant

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主な特徴

• R_DS(on) typ. 250 m and 400 m
• Not switching quiescent current: max 600 μA over temperature range
• Uses tiny capacitors and inductors
• Internal soft-start
• Enable function
• Step-down current mode PWM (1.7 MHz) DCDC converter
• 0.7 A output current capability
• Fixed output voltage of 1.2 V
• Synchronous rectification
• Typical efficiency: > 90%
• 3% DC output voltage tolerance

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主な特徴

• 3 A DC output current
• 4.5 V to 28 V input voltage
• Output voltage adjustable from 0.6 V
• 250 kHz switching frequency, programmable up to 1 MHz
• Internal soft-start and enable
• Low dropout operation: 100% duty cycle
• Voltage feed-forward
• Zero load current operation
• Overcurrent and thermal protection
• RoHS compliant

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主な特徴

• 3 A DC output current
• Operating input voltage from 5.5 V to 48 V
• 850 kHz internally fixed switching frequency
• Internal soft-start
• Internal current limiting
• Inhibit for zero current consumption
• 2 mA maximum quiescent current over-temperature range
• Thermal shutdown
• RoHS compliant

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主な特徴

• Input voltage Vin = 4 V to 18 V
• Output voltage Vout = 3.3 V
• Maximum output current: 3 A
• Switching frequency: 800 kHz
• Short-circuit protected
• RoHS compliant

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