MAX8732A 参数 Datasheet PDF下载

(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V

CC

,

SHDN

= V+,

R

CS

= 7mΩ, V

ILIM

_ = 0.5V, T

A

= +25°C, unless otherwise noted.)

MAX8732A

5V OUTPUT EFFICIENCY

vs. LOAD CURRENT

MAX8732A/3A/4A toc01

MAX8732A

5V OUTPUT EFFICIENCY

vs. LOAD CURRENT

90

80

EFFICIENCY (%)

70

60

50

40

30

PWM MODE

ULTRASONIC MODE

PFM MODE

MAX8732A/3A/4A toc02

MAX8732A

5V OUTPUT EFFICIENCY

vs. LOAD CURRENT

90

80

EFFICIENCY (%)

70

60

50

40

30

ULTRASONIC MODE

PWM MODE

PFM MODE

MAX8732A/3A/4A toc03

100

90

80

EFFICIENCY (%)

70

60

50

40

30

20

10

0

PFM MODE

100

100

PWM MODE

ULTRASONIC MODE

V

IN

= 7V

ON5 = V

CC

ON3 = GND

0.001

0.01

0.1

LOAD CURRENT (A)

1

10

20

10

0

0.001

0.01

0.1

LOAD CURRENT (A)

V

IN

= 12V

ON5 = V

CC

ON3 = GND

1

10

20

10

0

0.001

0.01

0.1

LOAD CURRENT (A)

V

IN

= 24V

ON5 = V

CC

ON3 = GND

1

10

MAX8733A

3.3V OUTPUT EFFICIENCY

vs. LOAD CURRENT

MAX8732A/3A/4A toc04

MAX8732A

NO-LOAD BATTERY CURRENT

vs. INPUT VOLTAGE

MAX8732A/3A/4A toc05

MAX8733A

NO-LOAD BATTERY CURRENT

vs. INPUT VOLTAGE

PWM MODE

BATTERY CURRENT (mA)

MAX8732A/3A/4A toc06

100

90

80

EFFICIENCY (%)

70

60

50

40

30

20

10

0

100

PWM MODE

BATTERY CURRENT (mA)

PFM MODE

100

10

ULTRASONIC MODE

10

ULTRASONIC MODE

ULTRASONIC MODE

ON5 = V

CC

ON3 = V

CC

V

IN

= 7V

V

IN

= 12V

V

IN

= 24V

1

10

1

PFM MODE

1

PFM MODE

PWM MODE

0.001

0.01

0.1

LOAD CURRENT (A)

0.1

7

10

13

16

19

22

25

INPUT VOLTAGE (V)

0.1

7

10

13

16

19

22

25

INPUT VOLTAGE (V)

STANDBY INPUT CURRENT

vs. INPUT VOLTAGE

MAX8732A/3A/4A toc07

SHUTDOWN INPUT CURRENT

vs. INPUT VOLTAGE

MAX8732A/3A/4A toc08

MAX8732A

5V OUTPUT SWITCHING FREQUENCY

vs. LOAD CURRENT MAX8732A

225

SWITCHING FREQUENCY (kHz)

200

175

150

125

100

75

50

25

ULTRASONIC MODE

PFM MODE

0.01

0.1

LOAD CURRENT (A)

1

10

PWM MODE

V

IN

= 7V

MAX8732A/3A/4A toc09

190

188

STANDBY INPUT CURRENT (μA)

186

184

182

180

178

176

174

172

170

7

10

13

16

19

22

MAX8733A

MAX8732A

10.0

SHUTDOWN INPUT CURRENT (μA)

9.5

9.0

8.5

8.0

7.5

7.0

6.5

6.0

5.5

5.0

MAX8733A

MAX8732A

250

25

7

10

13

16

19

22

25

0

0.001

INPUT VOLTAGE (V)

INPUT VOLTAGE (V)

8

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