MAX8595XETA-T 查看數據表（PDF） - Maxim Integrated

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MAX8595XETA-T

High-Efficiency, 36V Step-Up Converters with TA Derating Option for 2 to 9 White LEDs

Maxim Integrated 

High-Efficiency, 36V Step-Up Converters

with TA Derating Option for 2 to 9 White LEDs

In applications using large RSENSE, it may be necessary

to add a series resistor (RCOMP) to CCOMP to increase

control loop phase margin. See Figure 2 for details.

The frequency of the zero is given by:

fZ

=

2π

×

1

RCOMP

×

CCOMP

Consult the factory for further information.

RCOMP

CCOMP

COMP

GND

Figure 2. Alternative Compensation Circuit

PC Board Layout

Due to fast switching waveforms and high-current

paths, careful PC board layout is required. An evalua-

tion kit (MAX8596XEVKIT) is available to speed design.

When laying out a board, minimize trace lengths

between the IC and RSENSE, the inductor, the diode,

the input capacitor, and the output capacitor. Keep

traces short, direct, and wide. Keep noisy traces, such

as the LX node trace, away from CS. The IN bypass

capacitor (CIN) should be placed as close to the IC as

possible. PGND and GND should be connected direct-

ly to the exposed paddle underneath the IC. The

ground connections of CIN and COUT should be as

close together as possible. The traces from IN to the

inductor and from the Schottky diode to the LEDs can

be longer.

Chip Information

TRANSISTOR COUNT: 2143

PROCESS: BiCMOS

8 _______________________________________________________________________________________

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