MAX1744AUB+ by Analog Devices

High-Voltage, Step-Down DC-DC Controller in µMAX


The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage. The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V. The MAX1744/MAX1745 are available in a space-saving 10-pin µMAX® package.

Where to Buy

Prices starting from US$4.45

Distributor Stock
Logo for Farnell
Farnell
from US$4.45
46
in stock
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Logo for Analog Devices
Analog Devices
from US$4.53
2,352
in stock
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Logo for element14
element14
from US$4.75
46
in stock
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Logo for Newark Electronics
Newark Electronics
from US$5.41
-
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Features

High-Voltage Operation (up to 36VIN)
Efficiency > 90%
Output Power Capability Exceeds 50W
10-Pin µMax Package
Low-Dropout Voltage
100% (max) Duty Cycle
90µA Quiescent Current
4µA Shutdown Current
Up to 330kHz Switching Frequency
Output Voltage 5V or 3.3V (MAX1744) Adjustable 1.25V to 18V (MAX1745)
5V or 3.3V (MAX1744)
Adjustable 1.25V to 18V (MAX1745)
Current-Limited Control Scheme

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 36
VOUT1 (V) (min) 3.3
VOUT1 (V) (max) 5
IOUT1 (A) (max) 10
Switch Type External
Preset VOUT (V) 5
Output Adjust. Method PresetResistor
# DC-DC Outputs 1
Switching Frequency (kHz) 330
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 3.15


MAX1744AUB+ Semiconductors - ICs by Analog Devices

DC/DC CTRL BUCK 330KHZ UMAX-10

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 36V
No. of Outputs 1 Output, 1Outputs
Duty Cycle (%) 100%
Controller IC Case Style µMAX
No. of Pins 10Pins
Switching Frequency 330kHz
Topology Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

High-Voltage, Step-Down DC-DC | Analog Devices
DC/DC CTRL, BUCK, 330KHZ, UMAX-10 | element14
Dc/Dc Ctrl, Buck, 330Khz, Umax-10 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1744AUB+ ?

Additional datasheets, footprints and schematics for MAX1744AUB+ are listed on our Part Details page. You can also find images and similar parts to MAX1744AUB+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for MAX1744AUB+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MAX1744AUB+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

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Is the MAX1744AUB+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1744AUB+ have stock available?

Authorised distributors including Analog Devices, element14, Farnell and Newark Electronics have stock available or on a lead time for MAX1744AUB+ .

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