Rainbow-electronics MAX763A Manual do Utilizador descarregar pdf (Página 5)

MAX748A/MAX763A

3.3V, Step-Down,

Current-Mode PWM DC-DC Converters

_______________________________________________________________________________________

_________________________________Typical Operating Characteristics (continued)

(Circuit of Figure 3, T

= +25°C, V

OUT

= 3.3V, unless otherwise noted.)

SWITCHING WAVEFORMS,

CONTINUOUS CONDUCTION

2µs/div

A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V

B: INDUCTOR CURRENT, 200mA/div

C: OUTPUT VOLTAGE RIPPLE, 50mV/div

V+ = 6V, I

OUT

= 250mA

400mA

0mA

B B

SWITCHING WAVEFORMS,

DISCONTINUOUS CONDUCTION

2µs/div

A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V

B: INDUCTOR CURRENT, 100mA/div

C: OUTPUT VOLTAGE RIPPLE, 50mV/div

V+ = 6V, I

OUT

= 75mA

200mA

0mA

LINE-TRANSIENT RESPONSE

5ms/div

A: V

OUT

, 50mV/div

B: V+, 5V/div, 7.0V TO 10.0V

OUT

= 350mA

10V

LOAD-TRANSIENT RESPONSE

5ms/div

A: V

OUT

, 50mV/div

B: I

OUT

, 200mA/div, 0mA TO 500mA

V+ = 6V

500mA

0mA

Note 2: Operation beyond the specifications listed in the

Electrical Characteristics

may exceed the power dissipation ratings of

the device.

Note 3: Wide temperature range circuit of Figure 5 using Sprague surface-mount capacitors.

Note 4: Standby current includes all external component leakage currents. Capacitor leakage currents dominate at T

= +85°C.

1 2 3 4 5 6 7 8 9 10 11 12

MAX748A/MAX763A 1
3.3V, Step-Down 1

Comentários a estes Manuais

Sem comentários

Rainbow-electronics MAX763A Manual do Utilizador Página 5

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Rainbow-electronics MAX763A