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MAX17542G

42V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter

42V Synchronous Buck Converter with Internal FETs Enables High Efficiency

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Overview

Description

The MAX17542G high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over 4.5V to 42V input. The converter can deliver up to 1A and generates output voltages from 0.9V up to 0.92 x V_IN. The feedback (FB) voltage is accurate to within ±1.7% over -40°C to +125°C.

The MAX17542G uses peak-current-mode control with pulse-width modulation (PWM) and operates with fixed 600kHz switching frequency at any load. The device is available in a 10-pin (3mm x 2mm) TDFN package. Simulation models are available.

MAX17542G: Block Diagram

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Key Features

Reduces External Components and Total Cost
- No Schottky-Synchronous Operation
- All-Ceramic Capacitors, Ultra-Compact Layout
Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 42V Input
- Adjustable 0.9V to 92%V_IN Output
- Delivers Up to 1A
Reduces Power Dissipation
- Peak Efficiency > 90%
- Shutdown Current = 0.9μA (typ)
Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Current Limit, Sink Current Limit, and Autoretry Startup
- Built-In Output-Voltage Monitoring (Active-Low RESET Pin)
- Programmable EN/UVLO Threshold
- Adjustable Soft-Start and Prebiased Power-Up
- High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction Temperature Range

Applications/Uses

Base Station, VOIP, Telecom
Battery-Powered Equipment
General-Purpose Point of Load
Home Theatre
HVAC and Building Control
Industrial Process Control

Parametric Specs

Part Number

V_IN
(V)

V_OUT1
(V)

Output Adjust. Method

I_OUT1
(A)

Switch Type

Synchronous Switching

DC-DC Outputs

Oper. Freq.
(kHz)

Design Tools

Package/Pins

Budgetary
Price

min

max

min

max

See Notes

MAX17542G

4.5

0.9

Resistor

Internal

Yes

600

EE-Sim

TDFN/10

$1.55 @1k

See All Step-Down Switching Regulators (380)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX17542GTAEVKIT: Evaluation Kit for MAX17542G
MAX17542GTBEVKIT: Evaluation Kit for MAX17542G

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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