MAX608ESA 데이터 시트보기 (PDF) - Maxim Integrated

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MAX608ESA

5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller

Maxim Integrated 

5V or Adjustable, Low-Voltage,

Step-Up DC-DC Controller

PRODUCTION

Surface Mount

INDUCTORS

Sumida

CD54 series

CDR125 series

Coiltronics

CTX20 series

Coilcraft

DO3316 series

DO3340 series

CAPACITORS

Matsuo

267 series

Sprague

595D series

AVX

TPS series

Sanyo

OS-CON series

TRANSISTORS

Siliconix

Si9410DY

Si4410DY

Si6426DQ

Si6946DQ

Motorola

MTP3055EL

MTD20N03HDL

MMFT3055ELT1

DIODES

Central Semiconductor

CMPSH-3

CMPZ5240

Nihon

EC11 FS1 series (high-

speed silicon)

Motorola

MBRS1100T3

MMBZ5240BL

Through Hole

Sumida

RCH855 series

RCH110 series

Sanyo

OS-CON series

Nichicon

PL series

Motorola

1N5817–1N5822

MUR105 (high-speed

silicon)

Feed-Forward Capacitor

When adjusting the output voltage, it may be necessary

to parallel a 47pF to 220pF capacitor across R2, as

shown in Figures 2 and 3. Choose the lowest capacitor

value that insures stability; high capacitance values

may degrade line regulation.

__________Applications Information

Starting Up Under Load

The Typical Operating Characteristics show the Start-Up

Voltage vs. Load Current graphs for 5V and 12V output

voltages. These graphs depend on the type of power

switch used. The MAX608 is not designed to start up

under full load with low input voltages.

Layout Considerations

Due to high current levels and fast switching wave-

forms, which radiate noise, proper PC board layout is

essential. Protect sensitive analog grounds by using a

star ground configuration. Minimize ground noise by

connecting GND, the input bypass capacitor ground

lead, and the output filter capacitor ground lead to a

single point (star ground configuration). Also, minimize

lead lengths to reduce stray capacitance, trace resis-

tance, and radiated noise. Place input bypass capaci-

tor C2 as close as possible to OUT and GND.

If an external resistor divider is used (Figures 2 and

3), the trace from FB to the resistors must be

extremely short.

SUPPLIER

PHONE

FAX

AVX

USA: (803) 448-9411 (803) 448-1943

Central

Semiconductor

USA: (516) 435-1110

(516) 435-1824

Coilcraft

USA: (708) 639-6400 (708) 639-1469

Coiltronics

USA: (407) 241-7876 (407) 241-9339

Matsuo

USA: (714) 969-2491 (714) 960-6492

Japan: 81-6-337-6450 81-6-337-6456

Motorola

USA: (800) 521-6274 (602) 952-4190

Nichicon

USA: (708) 843-7500 (708) 843-2798

Nihon

USA: (805) 867-2555 (805) 867-2556

Sanyo

USA: (619) 661-6835 (619) 661-1055

Japan: 81-7-2070-1005 81-7-2070-1174

Siliconix

USA: (800) 554-5565 (408) 970-3950

Sprague

USA: (603) 224-1961 (603) 224-1430

Sumida

USA: (708) 956-0666 (708) 956-0702

Japan: 81-3-3607-5111 81-3-3607-5144

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