Rainbow-electronics MAX1587A Bedienungsanleitung PDF herunterladen (Seite 11)

MAX1586A/MAX1586B/MAX1587A

High-Efficiency, Low-I

PMICs with

Dynamic Core for PDAs and Smart Phones

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960

1000

880

920

1040

2.5 3.53.0 4.0 4.5 5.0 5.5

SWITCHING FREQUENCY

vs. SUPPLY VOLTAGE

MAX1586A/86B/87A toc10

INPUT VOLTAGE (V)

SWITCHING FREQUENCY (kHz)

= -40°C

= +85°C

= +25°C

1.225

1.265

1.260

1.255

1.250

1.245

1.240

1.235

1.230

-40 -15 10 35 60 85

REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1586A/86B/87A toc11

TEMPERATURE (

REFERENCE VOLTAGE (V)

REG1 SWITCHING WAVEFORMS

WITH 800mA LOAD

MAX1586A/86B/87A toc12

400ns/div

500mA/div

10mv/div

AC-COUPLED

2V/div

LX1

REG1 SWITCHING WAVEFORMS

WITH 10mA LOAD

MAX1586A/86B/87A toc13

20µs/div

500mA/div

50mv/div

AC-COUPLED

2V/div

LX1

REG3 SWITCHING WAVEFORMS

WITH 250mA LOAD

MAX1586A/86B/87A toc14

400ns/div

500mA/div

10mv/div

AC-COUPLED

2V/div

LX3

REG3 PULSE-SKIP SWITCHING

WAVEFORMS WITH 10mA LOAD

MAX1586A/86B/87A toc15

10µs/div

500mA/div

10mv/div

AC-COUPLED

2V/div

LX3

Typical Operating Characteristics (continued)

(Circuit of Figure 5, V

= 3.6V, T

= +25°C, unless otherwise noted.)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 31 32

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