MAX1876EEG+ by Analog Devices

Dual 180° Out-of-Phase PWM Step-Down Controllers with POR


The MAX1875/MAX1876 dual, synchronized, step-down controller generates two outputs from input supplies ranging from 4.75V to 23V. Each output is adjustable from sub-1V to 18V and supports loads of 10A or higher. Input voltage ripple and total RMS input ripple current are reduced by synchronized 180° out-of-phase operation. The switching frequency is adjustable from 100kHz to 600kHz with an external resistor. Alternatively, the controller can be synchronized to an external clock generated to another MAX1875/MAX1876 or a system clock. One MAX1875/MAX1876 can be set to generate an in-phase, or 90° out-of-phase, clock signal for synchronization with additional controllers. This allows two controllers to operate either as an interleaved two- or four-phase system with each output shifted by 90°. These devices also feature soft-start and soft-stop. The MAX1875/MAX1876 eliminate the need for current-sense resistors by utilizing the low-side MOSFET's on-resistance as a current-sense element. This protects the DC-DC components from damage during output- overload conditions or when output short-circuit faults without requiring a current-sense resistor. Adjustable foldback current limit reduces power dissipation during short-circuit conditions. The MAX1876 includes a power-on reset output to signal the system when both outputs reach regulation. The MAX1875/MAX1876 are available in a 24-pin QSOP package. An evaluation kit is available to speed designs.

Where to Buy

Prices starting from US$5.04

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Farnell
from US$7.56
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Analog Devices
from US$5.04
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element14
from US$5.57
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Newark Electronics
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Features

Two Independent Output Voltages
180° Out-of-Phase Operation
90° Out-of-Phase Operation (Using Two MAX1875/MAX1876s)
Foldback Current Limit
4.75V to 23V Input Supply Range
0 to 18V Output-Voltage Range (Up to 10A)
>90% Efficiency
Fixed-Frequency Pulse-Width Modulation (PWM) Operation
Adjustable 100kHz to 600kHz Switching Frequency
External SYNC Input
Clock Output for Master/Slave Synchronization
Soft-Start and Soft-Stop
Active-low RST Output with 140ms Minimum Delay (MAX1876)
Lossless Current Limit (No Sense Resistor)

Specifications

VIN (V) (min) 4.75
VIN (V) (max) 23
VOUT1 (V) (min) 1
VOUT1 (V) (max) 18
IOUT1 (A) (max) 10
Switch Type External
Output Adjust. Method Resistor
Synchronous Switching? Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 600
Package/Pins QSOP/24
BudgetaryPrice (See Notes) 3.56


MAX1876EEG+ Semiconductors - ICs by Analog Devices

DC/DC CTRL BUCK 600HZ QSOP-24

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

Specifications

Supply Voltage Min 4.75V
Supply Voltage Max 23V
No. of Outputs 2 Output
Duty Cycle (%) -
Controller IC Case Style QSOP
No. of Pins 24Pins
Switching Frequency 600kHz
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)

Alternative Descriptions

Dual 180° Out-of-Phase PWM Ste | Analog Devices
DC/DC CTRL, BUCK, 600HZ, QSOP-24 | Farnell
Dc/Dc Ctrl, Buck, 600Hz, Qsop-24 | Newark Electronics

Frequently Asked Questions

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Is the MAX1876EEG+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Analog Devices, element14, Farnell and Newark Electronics have stock available or on a lead time for MAX1876EEG+ .

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