MAX8655ETN+ by Analog Devices

Highly Integrated, 25A, Wide-Input, Internal MOSFET, Step-Down Regulator


The MAX8655 synchronous-PWM buck regulator operates from a 4.5V to 25V input and generates an output voltage adjustable from 0.7V to 5.5V at loads up to 25A. Integrated power MOSFETs provide a small footprint, ease of layout, and reduced EMI. Removing the board trace inductances ensures the highest efficiency at high frequency. The MAX8655 uses peak current-mode control architecture with an adjustable (200kHz to 1MHz), constant-switching frequency, which is externally synchronizable. The MAX8655's adjustable current limit uses the inductor's DC resistance to improve efficiency or an external sense resistor for higher accuracy. Foldback type current limit is available to reduce the power dissipation under severe-overload or short-circuit conditions. A reference input is provided for use with a high-accuracy external reference or for DDR and tracking applications. Monotonic startup provides safe starting into a prebiased output, where traditional step-down regulators discharge the output capacitor during soft-start, creating a negative voltage at the output and possibly damaging the load. A 180° out-of-phase synchronization output is available for synchronizing with another MAX8655. An enable input is provided for on/off control and to facilitate output sequencing. Output-voltage sensing for programmable overvoltage protection is provided and is independent of the feedback network to further enhance the output overvoltage protection. Overall, the MAX8655 provides enough flexibility for the experienced user, as well as simplicity and ease of use for non-power-supply engineers. Learn More About PowerMind™

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Prices starting from US$3.90

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Features

25A Output Current
Integrated Power MOSFETs
Operates from 4.5V to 25V Supply
1% FB Voltage Accuracy Over Temperature
Adjustable Output Voltage Down to 0.7V
Adjustable Switching Frequency and External Synchronization from 200kHz to 1MHz
180° Phase-Shifted Synchronization
Adjustable Overcurrent Limit
Adjustable Slope Compensation
Selectable Current-Limit Mode: Latch-Off orAutomatic Recovery
Monotonic Output Voltage Rise at Startup into Prebias Output
Output Sources and Sinks Current for DDR Applications
Enable Input
Power-OK (POK) Output
Adjustable Soft-Start
Independently Adjustable Overvoltage Protection

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 25
VOUT1 (V) (min) 0.7
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 25
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools EE-Sim
Package/Pins TQFN/56TQFN HYBRID/56
BudgetaryPrice (See Notes) 7.2


MAX8655ETN+ Semiconductors - ICs by Analog Devices

DC/DC CONV BUCK 1MHZ TQFN-56

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

Specifications

Topology Buck (Step Down)
Input Voltage Min 4.5V
Input Voltage Max 25V
No. of Outputs 1Outputs
DC / DC Converter IC Case TQFN
No. of Pins 56Pins
Output Current 25A
Output Voltage Min 700mV
Output Voltage Max 5.5V
Switching Frequency 1MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 3 - 168 hours
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Highly Integrated, 25A, Wide-I | Analog Devices
Dc/Dc Conv, Buck, 1Mhz, Tqfn-56 | Newark Electronics
DC/DC CONV, BUCK, 1MHZ, TQFN-56 | element14

Frequently Asked Questions

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Is the MAX8655ETN+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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