Rainbow Electronics MAX1625 - Manual (Page 6)

10 µ s/div
MAX1624
LOAD-TRANSIENT RESPONSE
(WITH GLITCHCATCHER)
(3.5V)
C
MAX1624/25 TOC16
A: V OUT , 100mV/div, AC COUPLED
B: INDUCTOR CURRENT, 10A/div
C: LOAD CURRENT, 0A TO 11A, t
RISE = t FALL = 100ns
B
A
LG = REF
1 µ s/div
MAX1624
SWITCHING WAVEFORMS
C
0
MAX1624/25 TOC10
V IN = 5V, V OUT = 2.5V, LOAD = 5A
A: LX, 5V/div
B: V
OUT , 20mV/div, AC COUPLED
C: INDUCTOR CURRENT, 5A/div
B
A
1ms/div
MAX1624
STARTUP AND STANDBY RESPONSE
C
MAX1624/25 TOC11
V IN = 5V, V OUT = 2.5V, LOAD = 13.8A
A: V OUT , 1V/div
B: INDUCTOR CURRENT, 10A/div
C: STANDBY, D0–D4
B
A
MAX1624/MAX1625
High-Speed Step-Down Controllers with
Synchronous Rectification for CPU Power
6 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(T A = +25°C, using the MAX1624 evaluation kit, unless otherwise noted.)
100
0
0.1 1 10
MAX1624
EFFICIENCY vs. OUTPUT CURRENT
(V OUT = 1.1V)
20
10
MAX1624/25 TOC04
OUTPUT CURRENT (A)
EFFICIENCY (%)
40
30
60
70
50
80
90
100
0
0.1 1 10
MAX1624
EFFICIENCY vs. OUTPUT CURRENT
(V OUT = 2.5V)
20
10
MAX1624/25 TOC05
OUTPUT CURRENT (A)
EFFICIENCY (%)
40
30
60
70
50
80
90
100
0
0.1 1 10
MAX1624
EFFICIENCY vs. OUTPUT CURRENT
(V OUT = 3.5V)
20
10
MAX1624/25 TOC06
OUTPUT CURRENT (A)
EFFICIENCY (%)
40
30
60
70
50
80
90