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Details for MAX1649ESA+ by Maxim Integrated
Electronic & Electrical Components > Semiconductors - ICs > Power Management
CONTROLLER STEP DOWN DC-DC 1649
MAX1649ESA+ image

MAX1649ESA+ by Maxim Integrated

CONTROLLER STEP DOWN DC-DC 1649
Features
100u00b5A Max Quiescent Supply Current
16V Max Input Voltage
5V (MAX1649), 3.3V (MAX1651), or Adjustable Output Voltage
5u00b5A Max Shutdown Supply Current
Current-Limited Control Scheme
Less than 0.3V Dropout Voltage at 500mA
More than 12.5W Output Power
Up to 300kHz Switching Frequency
Up to 96.5% Duty Cycle
Part Information
MAX1649ESA+ image
RoHS Compliant
Description
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:
1 Output, 1Outputs
Duty Cycle (%):
96.5%
Controller IC Case Style:
SOIC
No. of Pins:
8Pins
Switching Frequency:
300kHz
Topology:
Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)
Adjustable Output Voltage Max:
16V
Adjustable Output Voltage Min:
1.5V
Base Number:
1649
Frequency:
300kHz
IC Temperature Range:
Industrial
Input Voltage Max:
16V
Operating Temperature Range:
-40°C to +85°C
Output Current:
2.5A
Output Current Max:
2.5A
Output Voltage:
5V
Primary Input Voltage:
5V
Termination Type:
Surface Mount Device
Voltage Regulator Type:
Step Down (Buck)
Alternate Descriptions
DC DC Cntrlr Single-OUT Step Down 3V to 16V Input 8-Pin SOIC N Avnet America
PMIC; DC/DC converter; Uin:3÷16V; Uout:1.5÷16V; SO8; buck Transfer Multisort Elektronik
DC DC Cntrlr Single-OUT Step Down 3V to 16V Input 8-Pin SOIC N Avnet Europe
MAX1649 Series 16 V 300 kHz Buck Surface Mount Switching Regulator - SOIC-8 Future Electronics