MAX17626
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MAX17626

2.7V to 5.5V, 700mA, Synchronous Step-Down Converter with Integrated MOSFETs

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High-Efficiency Synchronous Buck Regulator Offers Balance of High Performance, Wide Temperature Range, and Small Size

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $0.49
Features
  • Easy to Use
    • 2.7V to 5.5V Input
    • Adjustable 0.8V to 3.3V Output
    • ±1% Feedback Accuracy
    • Up to 700mA Output Current
    • Fixed 2MHz or 4MHz Operation
    • 100% Duty-Cycle Operation
    • Internally Compensated
    • All Ceramic Capacitors
  • High Efficiency
    • Selectable PWM- or PFM-Mode of Operation
    • Shutdown Current as Low as 0.1μA (typ)
  • Flexible Design
    • Internal Soft-Start and Prebias Startup
    • Open-Drain Power Good Output (PGOOD Pin)
  • Robust Operation
    • Overtemperature Protection
    • Overcurrent Protection
    • -40°C to +125°C Ambient Operating
    • Temperature/-40°C to +150°C Junction Temperature
Additional Details
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MAX17625 and MAX17626 are high-frequency synchronous step-down DC-DC converters with integrated MOSFETs and compensation components that operate over a 2.7V to 5.5V input-voltage range. MAX17625 and MAX17626 support up to 700mA load current and allow the use of small, low-cost input and output capacitors. The output voltage can be adjusted from 0.8V to 3.3V.

When the EN pin is asserted, an internal power-up sequence ramps up the error-amplifier reference, resulting in output-voltage soft-start. The FB pin monitors the output voltage through a resistor-divider. The devices select either PFM or forced-PWM mode depending on the state of the MODE pin at power-up. By pulling the EN pin to low, the devices enter shutdown mode and consume only 0.1µA (typ) of standby current.

The devices use an internally compensated, fixed-frequency, peak-current mode control scheme. On the falling edge of an internal clock, the high-side pMOSFET turns on and continues to be on during normal operation until at least the rising edge of the clock (for 40ns). An internal error amplifier compares the feedback voltage to a fixed internal reference voltage and generates an error voltage. The error voltage is compared to the sum of the current-sense voltage and the slope-compensation voltage by the PWM comparator to set the on-time. During the on-time of the pMOSFET, the inductor current ramps up. For the remainder of the switching period (off-time), the pMOSFET is kept off and the low-side nMOSFET turns on. During the off-time, the inductor releases the stored energy as the inductor current ramps down, providing current to the output. Under overload conditions, the cycle-by-cycle current-limit feature limits the inductor peak current by turning off the high-side pMOSFET and turning on the low-side nMOSFET.

Applications

  • Factory Automation
  • Personal Electronics
  • Point-of-Load Power Supply
Part Models 2
1ku List Price Starting From $0.49

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17626ATA+
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MAX17626ATA+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

MAX17625EVKIT

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

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MAX17625EVKIT

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

Features and Benefits

  • 2.7V to 5.5V Input-Voltage Range
  • MAX17625 Offers High 90.6% Efficiency (VIN = 3.3V, VOUT = 1.2V, IOUT = 400mA)
  • MAX17626 Offers High 94.5% Efficiency (VIN = 5V, VOUT = 3.3V, IOUT = 500mA)
  • Up to 700mA Load Current
  • 2MHz Fixed Switching Frequency for the MAX17625
  • 4MHz Fixed Switching Frequency for the MAX17626
  • Selectable Pulse-Width Modulation (PWM) and Pulse-Frequency Modulation (PFM) Modes of Operation
  • Internal 1ms Soft-Start Time
  • Power-Good (PGOOD) Output with Pullup Resistor to Respective Input Voltages
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX17625/MAX17626 evaluation kits (EV kits) provide a proven design to evaluate the performance of the MAX17625/MAX17626 converters. Each of these devices operate over an input range from 2.7V to 5.5V and deliver up to 700mA output current. The devices are configured to demonstrate optimum performance and component sizes in the EV kits.

The MAX17625 converter delivers up to 700mA at a switching frequency of 2MHz. The converter is configured for a 1.2V output over a 2.7V to 5.5V input range.

The MAX17626 converter delivers up to 700mA at a switching frequency of 4MHz. The converter is configured for a 3.3V output over a 3.6V to 5.5V input range.

The EV kits feature provisions for selecting the Mode of operation (PWM/PFM), Enable input, and PGOOD signal. The MAX17625/MAX17626 converter data sheet provides a complete description of the parts that should be read in conjunction with this data sheet prior to operating the EV kits.

Applications

  • Factory Automation
  • Personal Electronics
  • Point-of-Load Power Supply
reference details image

MAX17626EVKIT

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

zoom

MAX17626EVKIT

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

Evaluation Kit for the MAX17625/MAX17626 Converters in Application

Features and Benefits

  • 2.7V to 5.5V Input-Voltage Range
  • MAX17625 Offers High 90.6% Efficiency (VIN = 3.3V, VOUT = 1.2V, IOUT = 400mA)
  • MAX17626 Offers High 94.5% Efficiency (VIN = 5V, VOUT = 3.3V, IOUT = 500mA)
  • Up to 700mA Load Current
  • 2MHz Fixed Switching Frequency for the MAX17625
  • 4MHz Fixed Switching Frequency for the MAX17626
  • Selectable Pulse-Width Modulation (PWM) and Pulse-Frequency Modulation (PFM) Modes of Operation
  • Internal 1ms Soft-Start Time
  • Power-Good (PGOOD) Output with Pullup Resistor to Respective Input Voltages
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX17625/MAX17626 evaluation kits (EV kits) provide a proven design to evaluate the performance of the MAX17625/MAX17626 converters. Each of these devices operate over an input range from 2.7V to 5.5V and deliver up to 700mA output current. The devices are configured to demonstrate optimum performance and component sizes in the EV kits.

The MAX17625 converter delivers up to 700mA at a switching frequency of 2MHz. The converter is configured for a 1.2V output over a 2.7V to 5.5V input range.

The MAX17626 converter delivers up to 700mA at a switching frequency of 4MHz. The converter is configured for a 3.3V output over a 3.6V to 5.5V input range.

The EV kits feature provisions for selecting the Mode of operation (PWM/PFM), Enable input, and PGOOD signal. The MAX17625/MAX17626 converter data sheet provides a complete description of the parts that should be read in conjunction with this data sheet prior to operating the EV kits.

Applications

  • Factory Automation
  • Personal Electronics
  • Point-of-Load Power Supply
Tools & Simulations

Tools & Simulations 1

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