MAX1775EEE+T by Analog Devices

Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers

Status: Active
Series: MAX1775
RoHS: Unknown
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The MAX1775 dual, step-down DC-DC converter generates both the main (+3.3V at over 2A) and core (+1.8V at up to 1.5A) supplies for a complete power solution for PDAs, subnotebooks, and other hand-held devices. The main output is adjustable from +1.25V to +5.5V. The core output is adjustable from 1V to 5V. Both switching converters operate at up to 1.25MHz for small external components and use synchronous rectifiers to achieve efficiencies up to 95%. Operation with up to 100% duty cycle provides the lowest possible dropout voltage to extend useful battery life. The MAX1775 accepts inputs from +2.7V up to +28V, allowing use with many popular battery configurations as well as AC-DC wall adapters. Digital soft-start reduces battery current surges at power-up. Both the main and core converters have separate shutdown inputs. The MAX1775 comes in a small 16-pin QSOP package. The MAX1775 evaluation kit is available to help reduce design time.

Prices starting from US$1.69


Distributor Starting From Stock
Logo for element14 element14 US$5.53
806
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Logo for Newark Electronics Newark Electronics US$1.69
57
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Features

Dual, High-Efficiency, Synchronous Rectified Step-Down Converter
Main Power Adjustable from +1.25V to +5.5V Over 2A Load Current Up to 95% Efficiency
Adjustable from +1.25V to +5.5V
Over 2A Load Current
Up to 95% Efficiency
Core Power Adjustable from 1V to 5V Internal Switches Up to 1.5A Load Current Up to 92% Efficiency
Adjustable from 1V to 5V
Internal Switches
Up to 1.5A Load Current
Up to 92% Efficiency
100% (max) Duty Cycle
Up to 1.25MHz Switching Frequency
Input Voltage Range from +2.7V to +28V
170µA Quiescent Current
5µA Shutdown Current
Digital Soft-Start
Independent Shutdown Inputs

Specifications

VIN (V) (min) 2.7
VIN (V) (max) 28
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 2
Switch Type External
Preset VOUT (V) 1.83.3
Output Adjust. Method PresetResistor
Synchronous Switching? Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 1250
Package/Pins QSOP/16
BudgetaryPrice (See Notes) 4.05


MAX1775EEE+T Semiconductors - ICs by Analog Devices

DC/DC CONV BUCK 1.25MHZ QSOP-16

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

Specifications

Topology Buck (Step Down)
Input Voltage Min 2.7V
Input Voltage Max 28V
No. of Outputs 2Outputs
DC / DC Converter IC Case QSOP
No. of Pins 16Pins
Output Current 2A
Output Voltage Min 1.25V
Output Voltage Max 5.5V
Switching Frequency 1.25MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

DC/DC CONV, BUCK, 1.25MHZ, 85DEG C | element14
Dc/Dc Conv, Buck, 1.25Mhz, 85Deg C | Newark Electronics

Frequently Asked Questions

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Is the MAX1775EEE+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX1775EEE+T .

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