MAX17244ETESB+

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> Semiconductors - ICs

> Power Management

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Series Information for MAX17244ETESB+ - Maxim Integrated

Features

  • feature
    180u00b0 Out-of-Phase Clock Output at SYNCOUT Enables Cascaded Power Supplies for Increased Power Output
  • feature
    220kHz to 2.2MHz Adjustable Frequency with External Synchronization
  • feature
    42V Input Voltage Transient Protection
  • feature
    >90% Peak Efficiency
  • feature
    All-Ceramic Capacitor Solution Allows UltraCompact Solution Size
  • feature
    Automatic LX Slew-Rate Adjustment for Optimum Efficiency Across Operating Frequency Range
  • feature
    Cycle-by-Cycle Current Limit, Thermal Shutdown with Automatic Recovery
  • feature
    Eliminates External Components and Reduces Total Cost
  • feature
    Fixed 8ms Internal Software Start Reduces Input Inrush Current
  • feature
    Fixed Output Voltage with u00b12% Accuracy (5V/3.3V) or Externally Resistor Adjustable (1V to 10V)
  • feature
    Increases Design Flexibility
  • feature
    Integrated High-Side and Low-Side Switch Enables Synchronous Operation for High Efficiency and Reduced Cost
  • feature
    Low 28u03bcA (typ.) Quiescent Current
  • feature
    Low 5u03bcA (typ.) Shutdown Current
  • feature
    Operates Reliably
  • feature
    PWM and PFM Operation Optimizes Conversion Efficiency From Heavy to Light Loads
  • feature
    Power Good Output and High-Voltage EN Input Simplify Power Sequencing
  • feature
    Reduced EMI Emission with Spread-Spectrum
  • feature
    Reduces Power Dissipation

Description

DC/DC CONV SYNC BUCK 2.2MHZ TQFN-16
The MAX17244 high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 3.5V to 36V input voltage range with 42V input transient protection. The device can operate in dropout condition by running at 98% duty cycle. This converter delivers up to 2.5A and generates fixed output voltages of 3.3V/5V, along with the ability to program the output voltage between 1V to 10V. The MAX17244 uses a current-mode control architecture. The device can operate in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all loads, and is useful in applications sensitive to switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. Under light-load applications, the external sync pin FSYNC logic input allows the device to operate either in PFM mode for reduced current consumption or fixed-frequency FPWM (forced-PWM) mode to eliminate frequency variation to minimize EMI. Fixed-frequency FPWM mode is extremely useful for power supplies designed for RF transceivers where tight emission control is necessary. This device is available in a compact 16-pin (5mm x 5mm) TQFN package with exposed pad and 16-pin TSSOP. -40°C to +85°C operation.

Specifications

Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
3.5V
Input Voltage Max:
36V
DC / DC Converter IC Case:
TQFN
No. of Pins:
16Pins
Output Current:
2.5A
Output Voltage Nom.:
3.3V
Switching Frequency:
2.2MHz
Operating Temperature Max:
85°C
Product Range:
MAX17244 Series
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet America

Conv DC-DC Single Step Down 3.5V to 36V 16-Pin TQFN EP Tube

Avnet America product

Avnet Europe

Conv DC-DC Single Step Down 3.5V to 36V 16-Pin TQFN EP Tube

Avnet Europe product

Future Electronics

36V, 220kHz to 2.2MHz Step-Down Converters with 28╬╝A Quiescent Current