Rainbow-electronics MAX8737 Bedienungsanleitung PDF herunterladen (Seite 5)

MAX8737

Dual, Low-Voltage Linear Regulator Controllers

with External MOSFETs

_______________________________________________________________________________________ 5

100µs/div

SOFT-STOP

(EN FALLING EDGE)

MAX8737 toc04

1.5V

A. EN1, 5V/div

B. DRV1, 2V/div

NO LOAD

C. LDO1 OUTPUT, 1V/div

D. PGOOD1, 5V/div

2ms/div

SOFT-START

(UVLO RISING EDGE)

MAX8737 toc05

1.5V

A. 5V BIAS (V

), 5V/div

B. DRV1, 2V/div

NO LOAD, EN = V

C. LDO1 OUTPUT, 1V/div

D. PGOOD1, 5V/div

2ms/div

SOFT-STOP

(UVLO FALLING EDGE)

MAX8737 toc06

1.5V

A. 5V BIAS (V

), 5V/div

B. DRV1, 2V/div

NO LOAD, EN = V

C. LDO1 OUTPUT, 1V/div

D. PGOOD1, 5V/div

10µs/div

LOAD TRANSIENT

(0.1A TO 2.1A)

0.1A

MAX8737 toc07

1.50V

1.49V

2.1A

3.2V

2.8V

A. CONTROL SIGNAL

B. LOAD CURRENT, 2A/div

C. DRV1, 500mV/div

D. LDO1 OUTPUT VOLTAGE,

10mV/div

1.51V

10µs/div

LOAD TRANSIENT

(NO LOAD TO 2A)

MAX8737 toc08

1.50V

1.45V

3.2V

2.7V

A. CONTROL SIGNAL

B. LOAD CURRENT, 2A/div

C. DRV1, 1V/div

D. LDO1 OUTPUT VOLTAGE,

50mV/div

1.7V

2µs/div

LOAD TRANSIENT

(NO LOAD TO 2A)

MAX8737 toc09

1.50V

1.45V

3.2V

2.7V

A. CONTROL SIGNAL

B. LOAD CURRENT, 2A/div

C. DRV1, 1V/div

D. LDO1 OUTPUT VOLTAGE,

50mV/div

Typical Operating Characteristics (continued)

(Circuit of Figure 1, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 ... 14 15

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