Rainbow-electronics MAX15023 Manual do Utilizador descarregar pdf (Página 6)

MAX15023

Wide 4.5V to 28V Input, Dual-Output

Synchronous Buck Controller

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Supply = IN = 12V, unless otherwise noted. See

Typical Application Circuit

of Figure 6.)

+ I

VCC

CURRENT

vs. SWITCHING FREQUENCY

MAX15023 toc10

SWITCHING FREQUENCY (kHz)

+ I

VCC

CURRENT (mA)

900800700600500400300

120

150

180

210

200 1000

= V

= 5V

DL_

= C

DH_

= 10nF

DL_

= C

DH_

= 4.7nF

DL_

= C

DH_

= 1nF

= C

= 0nF

EN_ TURN-ON AND TURN-OFF THRESHOLD

vs. TEMPERATURE

MAX15023 toc11

TEMPERATURE (°C)

EN_ TURN-ON AND TURN-OFF THRESHOLDS

603510-15

1.025

1.050

1.075

1.100

1.125

1.150

1.175

1.200

1.225

1.250

1.000

-40 85

EN_ RISING

EN_ FALLING

LIM_ CURRENT

vs. TEMPERATURE

MAX15023 toc12

TEMPERATURE (°C)

LIM_ CURRENT (µA)

603510-15

-40 85

LIM2

LIM1

SHUTDOWN CURRENT

vs. TEMPERATURE

MAX15023 toc13

TEMPERATURE (°C)

SHUTDOWN CURRENT (µA)

603510-15

205

210

215

220

225

230

200

-40 85

CURRENT-LIMIT THRESHOLD

vs. R

LIM

MAX15023 toc14

LIM

(kΩ)

CURRENT-LIMIT THRESHOLD (mV)

555040 4515 20 25 30 3510

120

150

180

210

240

270

300

560

SOURCE CURRENT LIMIT

SINK CURRENT LIMIT

LOAD TRANSIENT ON OUT1

MAX15023 toc15

10µs/div

OUT1

(AC-COUPLED)

100mV/div

OUT2

(AC-COUPLED)

50mV/div

OUT1

5A/div

LOAD TRANSIENT ON OUT2

MAX15023 toc16

10µs/div

OUT2

(AC-COUPLED)

200mV/div

OUT1

(AC-COUPLED)

100mV/div

OUT2

2A/div

1 2 3 4 5 6 7 8 9 10 11 ... 26 27

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