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Typical operating characteristics (continued) – Rainbow Electronics MAX1703 User Manual

Page 6

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MAX1703

1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter

6

_______________________________________________________________________________________

_________________________________Typical Operating Characteristics (continued)

(V

IN

= +3.6V, V

OUT

= 5V, T

A

= +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)

V

OUT

= 5V

V

OUT

= 3.3V

0.5

1.5

1.0

2.5

2.0

3.0

3.5

2.5

4.0

4.5

3.0

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)

2

µ

s/div

I

LOAD

= 1.5A, C7 = 0.47

µ

F

HEAVY LOAD SWITCHING

MAX1703-08

2ms/div

V

OUT

IS AC COUPLED

LOAD CURRENT = 0A TO 1.5A

V

OUT

(50mV/div)

1.0A

0.5A

0A

LOAD-TRANSIENT RESPONSE

MAX1703-10

2ms/div

V

IN

= 2.6V TO 3.6V, V

OUT

IS AC COUPLED

V

OUT

(50mV/div)

V

IN

4V

2V
0V

LINE-TRANSIENT RESPONSE

MAX1703-09

1ms/div

V

IN

= 2.6V TO 3.6V, V

OUT

IS AC COUPLED

V

ON

V

OUT

(2V/div)

I

IN

(0.2A/div)

POWER-ON DELAY

(PFM MODE)

MAX1703-11