Rainbow-electronics MAX1701 Bedienungsanleitung PDF herunterladen (Seite 6)

MAX1700/MAX1701

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

Low-Noise, Step-Up DC-DC Converters

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

= +25°C, unless otherwise noted.)

1.244

1.246

1.250

1.248

1.252

1.254

-40 0-20 20 40 60 80 100

REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1700-04

TEMPERATURE (°C)

REFERENCE VOLTAGE (V)

1.244

1.246

1.250

1.248

1.252

1.254

0203010 40 50 60 70 80

REFERENCE VOLTAGE

vs. REFERENCE CURRENT

MAX1700-05

REFERENCE CURRENT (µA)

REFERENCE VOLTAGE (V)

0.2

0.6

0.4

1.0

0.8

1.4

1.2

1.6

2.5 3.5 43 4.5 5 5.5

PEAK INDUCTOR CURRENT

vs. OUTPUT VOLTAGE

MAX1700-08

OUTPUT VOLTAGE (V)

CURRENT LIMIT (A)

PFM

PWM

280

290

285

305

300

295

315

320

310

325

-40 20 40-20 0 60 80 100 120 140

FREQUENCY vs. TEMPERATURE

MAX1700-06

TEMPERATURE (°C)

FREQUENCY (kHz)

OUT

= 5V

OUT

= 3.3V

OUT

= 0mA, V

OUT

= 3.3V

A = V

, 1.1V TO 2.1V, 1V/div

B = V

OUT

RIPPLE, 50mV/div, AC COUPLED

LINE-TRANSIENT RESPONSE

5ms/div

MAX1700-09

= 1.1V, I

OUT

= 200mA, V

OUT

= 3.3V

A = LX VOLTAGE, 2V/div

B = INDUCTOR CURRENT, 0.5A/div

C = V

OUT

RIPPLE, 50mV/div, AC COUPLED

HEAVY-LOAD SWITCHING WAVEFORMS

OUT

= 3.3V)

OUT

1µs/div

MAX1700-08

0.5

0.01

START-UP INPUT VOLTAGE

vs. OUTPUT CURRENT

0.9

0.7

1.1

MAX1700/01 TOC06a

OUTPUT CURRENT (mA)

START-UP INPUT VOLTAGE (V)

100

1.7

1.5

2.1

1.9

1.3

0.1 10 1000

2.3

NO-LOAD START-UP:

1.0V AT -40°C

0.79 AT +25°C

0.64V AT +85°C

CONSTANT-CURRENT LOAD

OUT

= 3.3V

L = 10µH

D1 = MBR0520L

= -40°C

= +25°C

= +85°C

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

MAX1700/MAX1701 1

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