Rainbow-electronics MAX652 Bedienungsanleitung PDF herunterladen (Seite 5)

MAX649/MAX651/MAX652

5V/3.3V/3V or Adjustable, High-Efficiency,

Low I

, Step-Down DC-DC Controllers

_______________________________________________________________________________________

130

EXT RISE AND FALL TIMES

vs. TEMPERATURE (1nF)

120

RISE

FALL

(ns)

110

-60 -20 60 140

MAX649-A10

TEMPERATURE (°C)

20 100-40 0 8040 120

V+ = 5V, t

RISE

100

V+ = 5V, t

FALL

V+ = 12V, t

RISE

V+ = 12V, t

FALL

EXT

= 1nF

500

EXT RISE AND FALL TIMES

vs. TEMPERATURE (5nF)

450

RISE

FALL

(ns)

400

350

-60 -20 60 140

MAX649-A11

TEMPERATURE (°C)

20 100-40 0 8040 120

V+ = 5V, t

RISE

300

250

150

200

100

V+ = 5V, t

FALL

V+ = 12V, t

RISE

EXT

= 5nF

V+ = 12V, t

FALL

1000

0 0.2 0.4 0.6 0.8 1.0

1.2

1.4 1.6

DROPOUT VOLTAGE

vs. LOAD CURRENT

200

300

100

800

900

MAX649-A12

LOAD CURRENT (A)

DROPOUT VOLTAGE (mV)

600

500

700

400

MAX649, V

OUT

= 5V

MAX652, V

OUT

= 3V

MAX651, V

OUT

= 3.3V

1100

600

DROPOUT VOLTAGE

vs. TEMPERATURE

700

1000

DROPOUT VOLTAGE (mV)

900

800

MAX651

-60 -20 60 140

MAX649-A13

TEMPERATURE (°C)

20 100-40 0 8040 120

LOAD

= 1A

CIRCUIT OF FIGURE 1

MAX649

MAX652

250

REFERENCE OUTPUT RESISTANCE

vs. TEMPERATURE

200

REFRENCE OUTPUT RESISTANCE (Ω)

150

100

-60 -20 60 140

MAX649-A16

TEMPERATURE (°C)

20 100-40 0 8040 120

REF

= 10µA

REF

= 50µA

REF

= 100µA

235

185

CS TRIP LEVEL

vs. TEMPERATURE

195

225

CS TRIP LEVEL (mV)

215

205

-60 -20 60 140

MAX649-A14

TEMPERATURE (°C)

20 100-40 0 8040 120

190

200

230

220

210

1.506

1.492

REFERENCE OUTPUT VOLTAGE

vs. TEMPERATURE

1.494

1.504

REFRENCE OUTPUT (V)

1.502

1.500

-60 -20 60 140

MAX649-A15

TEMPERATURE (°C)

20 100-40 0 8040 120

1.498

1.496

____________________________Typical Operating Characteristics (continued)

= +25°C, unless otherwise noted.)

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

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