MAX763ACSA Datasheet Download

Part No.:
MAX763ACSA
Download:
Download Datasheet
Description:
[3.3V, Step-Down, Current-Mode PWM DC-DC Converters]
File Size:
136 K
Page:
12 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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3.3V, Step-Down,
Current-Mode PWM DC-DC Converters
_________________________________Typical Operating Characteristics (continued)
(Circuit of Figure 3, T
A
= +25°C, V
OUT
= 3.3V, unless otherwise noted.)
MAX748A/MAX763A
SWITCHING WAVEFORMS,
CONTINUOUS CONDUCTION
SWITCHING WAVEFORMS,
DISCONTINUOUS CONDUCTION
6V
A
0V
400mA
B
0mA
C
6V
A
0V
200mA
B
0mA
C
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, IOUT = 250mA
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, IOUT = 75mA
LINE-TRANSIENT RESPONSE
LOAD-TRANSIENT RESPONSE
A
A
500mA
10V
7V
0V
B
0mA
B
5ms/div
A: VOUT, 50mV/div
B: V+, 5V/div, 7.0V TO 10.0V
IOUT = 350mA
5ms/div
A: VOUT, 50mV/div
B: IOUT, 200mA/div, 0mA TO 500mA
V+ = 6V
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 TA = +85°C.
_______________________________________________________________________________________
5