Rainbow-electronics MAX16904 Bedienungsanleitung PDF herunterladen

General Description

The MAX16904 is a small, synchronous buck converter

with integrated high-side and low-side switches. The

device is designed to deliver 600mA with input voltages

from +3.5V to +28V while using only 25µA quiescent

current at no load. Voltage quality can be monitored by

observing the PGOOD signal. The MAX16904 can oper-

ate in dropout by running at 97% duty cycle, making it

ideal for automotive and industrial applications.

The MAX16904 operates at a 2.1MHz frequency, allow-

ing for small external components and reduced output

ripple. It guarantees no AM band interference. SYNC

input programmability enables three frequency modes

for optimized performance: forced fixed-frequency

operation, SKIP mode (ultra-low quiescent current of

25µA), and synchronization to an external clock. The

MAX16904 can be ordered with spread-spectrum fre-

quency modulation, designed to minimize EMI-radiated

emissions due to the modulation frequency.

The MAX16904 is available in a thermally enhanced,

3mm x 3mm, 10-pin TDFN package or a 16-pin TSSOP

package. The MAX16904 operates over the -40°C to

+125°C automotive temperature range.

Applications

Automotive

Industrial

Military

High-Voltage Input-Power DC-DC Applications

Features

o Wide +3.5V to +28V Input Voltage Range

o Tolerates Input Voltage Transients to +42V

o 600mA Minimum Output Current with Overcurrent

Protection

o Fixed Output Voltages (+3.3V and +5V)

o 2.1MHz Switching Frequency with Three Modes of

Operation

25µA Ultra-Low Quiescent Current SKIP Mode

Forced Fixed-Frequency Operation

External Frequency Synchronization

o Optional Spread-Spectrum Frequency Modulation

o Power-Good Output

o Enable-Pin Compatible from +3.3V Logic Level to

+42V

o Thermal Shutdown Protection

o -40°C to +125°C Automotive Temperature Range

o 10-Pin TDFN-EP or 16-Pin TSSOP-EP Packages

o AEC-Q100 Qualified

MAX16904

2.1MHz, High-Voltage,

600mA Mini-Buck Converter

________________________________________________________________

Maxim Integrated Products

19-5481; Rev 1; 11/10

EVALUATION KIT

AVAILABLE

PART

SPREAD

SPECTRUM

TEMP

RANGE

PIN-

PACKAGE

MAX16904RATB__/V+ Disabled

-40°C to

+125°C

10 TDFN-EP*

MAX16904RAUE__/V+ Disabled

-40°C to

+125°C

16 TSSOP-EP*

MAX16904SATB__/V+ Enabled

-40°C to

+125°C

10 TDFN-EP*

MAX16904SAUE__/V+ Enabled

-40°C to

+125°C

16 TSSOP-EP*

Ordering Information

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Note: Insert the desired suffix letters (from

Selector Guide

) into

the blanks to indicate the output voltage. Alternative output volt-

ages available upon request.

Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

EP = Exposed pad.

Selector Guide appears at end of data sheet.

1 2 3 4 5 6 ... 12 13

Inhaltsverzeichnis

Seite 1 - 600mA Mini-Buck Converter

General DescriptionThe MAX16904 is a small, synchronous buck converterwith integrated high-side and low-side switches. Thedevice is designed to delive

Seite 2

MAX16904inductor value lowers the peak-to-average current ratioyielding a lower input capacitance requirement.The input ripple comprises mainly of ΔVQ

Seite 3

2) Solder the exposed pad to a large copper planearea under the device. To effectively use this copperarea as heat exchanger between the PCB and ambi-

Seite 4

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter12 ______________________________________________________________________________________Chip In

Seite 5

MAX169042.1MHz, High-Voltage,600mA Mini-Buck ConverterMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodi

Seite 6

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter2 _______________________________________________________________________________________MAX1690

Seite 7

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter_______________________________________________________________________________________ 3ABSOLUT

Seite 8

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter4 _______________________________________________________________________________________ELECTRI

Seite 9

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter_______________________________________________________________________________________ 5Typical

Seite 10

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter6 _______________________________________________________________________________________Typical

Seite 11

MAX169042.1MHz, High-Voltage,600mA Mini-Buck Converter_______________________________________________________________________________________ 7Pin Des

Seite 12

MAX16904Detailed DescriptionThe MAX16904 is a small, current-mode buck converterthat features synchronous rectification and requires noexternal compen

Seite 13

If the input voltage is reduced and the deviceapproaches dropout, it tries to turn on the high-sideFET continuously. To maintain gate charge on the hi

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Rainbow-electronics MAX16904 Bedienungsanleitung

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