MAX15038(2008) 查看數據表（PDF） - Maxim Integrated

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MAX15038
(Rev.:2008)

4A, 2MHz Step-Down Regulator with Integrated Switches

Maxim Integrated 

4A, 2MHz Step-Down Regulator

with Integrated Switches

Typical Operating Characteristics (continued)

(Typical values are VIN = VEN = 5V, VOUT = 1.8V, RFREQ = 49.9kΩ, IOUT = 4A, TA = +25°C, circuit of Figure 1, unless otherwise noted.)

STARTING INTO PREBIASED OUTPUT

(MODE = VDD, VOUT = 2.5V, NO LOAD)

MAX15038 toc20

VEN

2V/div

0V

VOUT

1V/div

0V

VPWRGD

2V/div

0V

200µs/div

STARTING INTO PREBIASED OUTPUT

ABOVE NOMINAL SETPOINT (VOUT = 1.5V)

MAX15038 toc22

VEN

2V/div

0V

VOUT

1V/div

VMODE = VDD,

NO LOAD

0V

VPWRGD

2V/div

0V

1ms/div

TRANSITION FROM SKIP MODE

TO FORCED PWM MODE

MAX15038 toc24

VMODE

5V/div

VLX

5V/div

VOUT

0.5V/div

STARTING INTO PREBIASED OUTPUT

(MODE = VDD/2, VOUT = 2.5V, NO LOAD)

MAX15038 toc21

VEN

2V/div

0V

VOUT

1V/div

0V

VPWRGD

2V/div

0V

200µs/div

STARTING INTO PREBIASED ABOVE

NOMINAL SETPOINT (VOUT = 1.5V)

MAX15038 toc23

VEN

2V/div

0V

VOUT

1V/div

VMODE = VDD/2,

NO LOAD

0V

VPWRGD

2V/div

0V

1ms/div

TRANSITION FROM FORCED PWM

TO SKIP MODE

MAX15038 toc25

VMODE

5V/div

VLX

5V/div

VOUT

0.5V/div

0V

2ms/div

0V

4ms/div

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