Rainbow-electronics MAX1703 Bedienungsanleitung PDF herunterladen (Seite 6)

MAX1703

1-Cell to 3-Cell, High-Power (1.5A),

Low-Noise, Step-Up DC-DC Converter

6 _______________________________________________________________________________________

_________________________________Typical Operating Characteristics (continued)

= +3.6V, V

OUT

= 5V, T

= +25°C, unless otherwise noted.)

260

290

280

270

310

300

320

330

340

-40 20 40 60-20 0 80 100

FREQUENCY vs. TEMPERATURE

MAX1703-15

TEMPERATURE (°C)

FREQUENCY (kHz)

OUT

= 5V

OUT

= 3.3V

0.5

1.5

1.0

2.5

2.0

3.0

3.5

2.5 4.0 4.53.0 3.5 5.0 5.5

PEAK INDUCTOR CURRENT LIMIT

vs. OUTPUT VOLTAGE

MAX1703-16

OUTPUT VOLTAGE (V)

CURRENT LIMIT(A)

PWM

LOW POWER (PFM)

2µs/div

LOAD

= 1.5A, C7 = 0.47µF

HEAVY LOAD SWITCHING

MAX1703-08

2ms/div

OUT

IS AC COUPLED

LOAD CURRENT = 0A TO 1.5A

OUT

(50mV/div)

1.0A

0.5A

LOAD-TRANSIENT RESPONSE

MAX1703-10

2ms/div

= 2.6V TO 3.6V, V

OUT

IS AC COUPLED

OUT

(50mV/div)

LINE-TRANSIENT RESPONSE

MAX1703-09

1ms/div

= 2.6V TO 3.6V, V

OUT

IS AC COUPLED

OUT

(2V/div)

(0.2A/div)

POWER-ON DELAY

(PFM MODE)

MAX1703-11

1 2 3 4 5 6 7 8 9 10 11 ... 15 16

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