MAX1649CPA+

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> Semiconductors - ICs

> Power Management

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Series Information for MAX1649CPA+ - Maxim Integrated

Features

  • feature
    100u00b5A Max Quiescent Supply Current
  • feature
    16V Max Input Voltage
  • feature
    5V (MAX1649), 3.3V (MAX1651), or Adjustable Output Voltage
  • feature
    5u00b5A Max Shutdown Supply Current
  • feature
    Current-Limited Control Scheme
  • feature
    Less than 0.3V Dropout Voltage at 500mA
  • feature
    More than 12.5W Output Power
  • feature
    Up to 300kHz Switching Frequency
  • feature
    Up to 96.5% Duty Cycle

Description

DC/DC CONTROLLER BUCK 300KHZ DIP-8
The MAX1649/MAX1651 BiCMOS, step-down, DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2.5A. A unique, current- limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modula- tion (PWM) converters (high efficiency at heavy loads), while using only 100µA of supply current (vs. 2mA to 10mA for PWM converters). Dropout performance down to 300mV is provided by a high switch duty cycle (96.5%) and a low current-sense threshold (110mV). A high switching frequency (up to 300kHz) allows these devices to use miniature external components. The MAX1649/MAX1651 have dropout voltages less than 0.3V at 500mA and accept input voltages up to 16V. Output voltages are preset at 5V (MAX1649), or 3.3V (MAX1651). They can also be adjusted to any voltage from 1.5V to the input voltage by using two resistors. These step-down controllers drive external P-channel MOSFETs at loads greater than 12.5W. If less power is required, use the MAX639/MAX640/MAX653 step-down converters with on-chip FETs, which allow up to a 225mA load current.

Specifications

Supply Voltage Min:
3V
Supply Voltage Max:
16V
No. of Outputs:
1Outputs
Duty Cycle (%):
96.5%
Controller IC Case Style:
DIP
No. of Pins:
8Pins
Switching Frequency:
300kHz
Topology:
Buck (Step Down)
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet America

DC DC Cntrlr Single-OUT Step Down 3V to 16V Input 8-Pin PDIP N

Avnet America product

Avnet Europe

DC DC Cntrlr Single-OUT Step Down 3V to 16V Input 8-Pin PDIP N

Avnet Europe product

Future Electronics

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controller