MAX5072ETJ+T by Analog Devices

2.2MHz, Dual-Output Buck or Boost Converter with POR and Power-Fail Output


The MAX5072 is a dual-output DC-DC converter with integrated high-side n-channel power MOSFETs. Each output can be configured either as a buck converter or a boost converter. The MAX5072 is designed to manage the power requirements of xDSL modems. The wide 5.5V to 23V input voltage range allows for the use of inexpensive AC adapters to power the device in xDSL modem applications. Each output is programmable down to 0.8V in the buck mode and up to 28V in the boost mode with an output voltage accuracy of ±1%. In the buck mode, converter 1 and converter 2 can deliver 2A and 1A, respectively. The output switching frequency of each converter can be programmed from 200kHz to 2.2MHz to avoid harmonics in the xDSL frequency band of operation. Each output operates 180° out-of-phase, thus reducing input-capacitor ripple current, size, and cost. A SYNC input facilitates external frequency synchronization. Moreover, a CLKOUT output provides out-of-phase clock signal with respect to converter 2, allowing four-phase operation using two MAX5072 ICs in master-slave configuration. The MAX5072 includes an internal digital soft-start that reduces inrush current, eliminates output-voltage overshoot, and ensures monotonic rise in output voltage during power-up. The device includes a power-good output and power-on reset as well as manual reset. In addition, each converter output can be shut down individually. The MAX5072 features a "dying gasp" output, which goes low when the input voltage drops below a preprogrammed voltage. Protection features include output short-circuit protection for buck mode and maximum duty-cycle limit for boost operation, as well as thermal shutdown. The MAX5072 is available in a thermally enhanced 32-pin thin QFN package that can dissipate 2.7W at +70°C ambient temperature. The device is rated for operation over the -40°C to +85°C extended, or -40°C to +125°C automotive operating temperature range.

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Prices starting from US$4.08

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Features

4.5V to 5.5V or 5.5V to 23V Input Supply Voltage Range
0.8V (Buck) to 28V (Boost) Output Voltage
Two Independent Output DC-DC Converters with Internal Power MOSFETs
Each Output can be Configured in Buck or Boost Mode
IOUT1 and IOUT2 of 2A and 1A (Respectively) in Buck Mode
180° Out-of-Phase Operation
Clock Output for Four-Phase Operation
Switching Frequency Programmable from 200kHz to 2.2MHz
Digital Soft-Start and Independent Converter Shutdown
SYNC Input, Power-On Reset, Manual Reset, And Power-Fail Output
Short-Circuit Protection (Buck)/Maximum Duty-Cycle Limit (Boost)
Thermal Shutdown
Thermally Enhanced 32-Pin Thin QFN Package Dissipates up to 2.7W at +70°C

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 23
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 28
IOUT1 (A) (max) 2
Switch Type Internal
Output Adjust. Method Resistor
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 2200
Package/Pins TQFN/32
BudgetaryPrice (See Notes) 3.47


MAX5072ETJ+T Power Management ICs - PMIC by Analog Devices

DC/DC CTRL, BUCK-BOOST, 2.2MHZ, TQFN-32

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

Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 23V
No. of Outputs 2 Output
Duty Cycle (%) 95%
Controller IC Case Style TQFN
No. of Pins 32Pins
Switching Frequency 2.2MHz
RoHS Compliant Yes

Alternative Descriptions

2.2MHz, Dual-Output Buck or Bo | Analog Devices
Dc/Dc Ctrl, Buck-Boost, 2.2Mhz, Tqfn-32 | Newark Electronics

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This part has not been flagged as RoHS Compliant.

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