MAX17552, MAX17552A, 60V, 100mA, ultra-small size, high efficiency, synchronous step-down DC-DC converter, no-load current consumption is 22μA, 60V, low IQ synchronous step-down regulator achieves high efficiency

To create a schematic or simulation device, use EE-Sim®: MAX17552
The MAX17552 is a built-in MOSFET, high-efficiency, high-voltage, synchronous step-down DC-DC converter that can operate from an input voltage range of 4V to 60V. The converter can deliver up to 100mA from 0.8V to 0.9 x VIN output voltage. In the operating temperature range of -40 ° C to + 125 ° C, the output voltage accuracy is not less than ± 1.75%.
The device uses a peak current mode control architecture and has a MODE pin that can be used to select the pulse width modulation (PWM) or pulse frequency modulation (PFM) operating mode. The PWM operating mode maintains a fixed operating frequency under any load condition, making it ideal for applications sensitive to switching frequency changes. The PFM operating mode eliminates negative inductor current and the use of pulse skipping at light loads to improve efficiency. In PFM mode, the no-load current consumption of the converter is only 22μA. The low on-resistance of the built-in MOSFET ensures high efficiency at full load and also simplifies PCB design.
The device has a programmable switching frequency to optimize solution size and efficiency. Programmable soft-start function reduces user inrush current. An EN / UVLO pin allows the user to turn the device on / off when the input voltage reaches the required value. The open-drain RESET pin can monitor the output voltage. The device operates over the -40 ° C to + 125 ° C industrial temperature range and is available in 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) μMAX® packages. Provide simulation models.
MAX17552: Typical Application Circuit MAX17552: Typical Application Circuit
Zoom +

Key features

    Reduce external components and lower overall cost
        No Schottky Diode Required-Synchronous Rectification Works Efficiently and Low Cost
        Internal compensation
        Internal fixed 5.1ms or programmable soft-start
        Full-use ceramic capacitors for compact layout
    Reduced DC-DC Regulator Inventory List
        4V to 60V wide input voltage range
        Adjustable 0.8V to 0.9 x VIN output voltage
        Provides up to 100mA load current
        100kHz to 2.2MHz adjustable switching frequency range with out-of-band synchronization
        Configurable PFM and forced PWM modes
    Reduce power consumption
        22μA no-load current
        Peak efficiency> 90%
        PFM characteristics make high efficiency at light load
        1.2μA (typical) Shutdown Current
    Works reliably in harsh industrial environments
        Peak current limit protection
        Open-drain RESET input pin with built-in output voltage monitoring
        Programmable EN / UVLO threshold
        Monotonically enters pre-biased output at startup
        Overheating protection
        High industrial grade -40 ° C to + 125 ° C operating range / -40 ° C to + 150 ° C junction temperature range

application

    4–20mA current loop powered sensor
    Battery-powered equipment
    Universal point of load power
    Replace high voltage LDO
    HVAC and building control
    Industrial sensors and process control

 

 

Back