Rainbow Electronics MAX1855 - Manual (Page 10)

MAX1716/MAX1854/MAX1855
High-Speed, Adjustable, Synchronous Step-Down
Controllers with Integrated Voltage Positioning
10 ______________________________________________________________________________________
B 10A
0
20A
1.55V
1.60V
1.50V
A
40 µs/div
A. V OUT = 1.6V, 50mV/div
B. I OUT = 0.3A TO 18A, 10A/div
CIRCUIT #1, V BATT = 4.5V, PWM MODE
LOAD-TRANSIENT RESPONSE
(V BATT = 4.5V)
MAX1716-27
B 10A
0
20A
0.94V
0.98V
1.00V
0.96V
A
40 µs/div
A. V OUT = 1.0V, 20mV/div
B. I OUT = 0.3A TO 12A, 10A/div
CIRCUIT #3, V BATT = 4.5V, PWM MODE
LOAD-TRANSIENT RESPONSE
(V OUT(PROG) = 1.0V)
MAX1716-28
B 10A
0
20A
1.60V
1.65V
1.55V
1.50V
A
40 µs/div
A. V OUT = 1.6V, 50mV/div
B. I OUT = 0.3A TO 18A, 10A/div
CIRCUIT #4, V BATT = 15V, PWM MODE
LOAD-TRANSIENT RESPONSE
WITH CERAMIC OUTPUT CAPACITORS
MAX1716-29
Typical Operating Characteristics (continued)
(Circuit from Figure 1, components from Table 2, T A = +25°C, unless otherwise noted.)
B 10A
0
20A
1.55V
1.60V
1.50V
A
40 µs/div
A. V OUT = 1.6V, 50mV/div; B. I OUT = 0.3A TO 18A, 10A/div
CIRCUIT #1, V BATT = 15V, SKIP MODE
LOAD-TRANSIENT RESPONSE
(V BATT = 15V, SKIP MODE)
MAX1716-26