Rainbow-electronics MAX15054 Manual de usuario descargar pdf (Pagina 5)

High-Side MOSFET Driver for HB LED Drivers

and DC-DC Applications

MAX15054

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

= V

BST

= 5V, V

= V

GND

= 0V, T

= +25°C, unless otherwise noted.)

2MHz OPERATION

MAX15054 toc08

HDRV

2V/div

200ns/div

NO LOAD ON HDRV

HDRV OUTPUT HIGH/LOW

vs. TEMPERATURE

MAX15054 toc09

TEMPERATURE (NC)

OUTPUT HIGH/LOW (V)

1109580655035205-10-25

100

120

140

-40 125

BST -

HDRV

SOURCING 100mA

HDRV -

SINKING 100mA

OUTPUT HIGH = V

BST -

HDRV

OUTPUT LOW = V

HDRV -

4% DUTY CYCLE AT 2MHz

MAX15054 toc10

10ns/div

2V/div

HDRV

2V/div

96% DUTY CYCLE AT 2MHz

MAX15054 toc11

2V/div

10ns/div

TURN-ON/TURN-OFF PROPAGATION

DELAY vs. TEMPERATURE

MAX15054 toc12

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

110

9565 80-10 5 20 35 50-25

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

12.5

13.0

8.0

-40 125

OFF

RISE TIME AND FALL TIME

MAX15054 toc13

2V/div

20ns/div

HDRV

4.7nF CAPACITOR

CONNECTED FROM

HDRV TO GND,

LX = GND

TURN-ON AND TURN-OFF

PROPAGATION DELAY

MAX15054 toc14

1V/div

40ns/div

1nF CAPACITOR CONNECTED

FROM HDRV TO GND,

LX = GND

HDRV

1 2 3 4 5 6 7 8 9

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Rainbow-electronics MAX15054 Manual de usuario Pagina 5

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