Rainbow Electronics MAX1625 - Manual (Page 7)

MAX1624/MAX1625
High-Speed Step-Down Controllers with
Synchronous Rectification for CPU Power
_______________________________________________________________________________________ 7
____________________________Typical Operating Characteristics (continued)
(T A = +25°C, using the MAX1624 evaluation kit, unless otherwise noted.)
1.1020
1.1000
0.1 1 0.01 10
MAX1624
OUTPUT VOLTAGE vs. OUTPUT CURRENT
(V OUT = 1.1V)
1.1002
1.1006
1.1004
MAX1624/25 TOC07
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V)
1.1008
1.1010
1.1014
1.1012
1.1016
1.1018
LG = V CC
LG = REF
LG = AGND
R9 AND R10 = 4.7 Ω
2.500
2.490
0.1 1 0.01 10
MAX1624
OUTPUT VOLTAGE vs. OUTPUT CURRENT
(V OUT = 2.5V)
2.491
2.492
MAX1624/25 TOC08
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V) 2.493
2.494
2.496
2.495
2.497
2.498
2.499
LG = V
CC
LG = REF
LG = AGND
R9 AND R10 = 4.7 Ω
3.500
3.480
0.1 1 0.01 10
MAX1624
OUTPUT VOLTAGE vs. OUTPUT CURRENT
(V OUT = 3.5V)
3.482
3.486
3.484
MAX1624/25 TOC09
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V)
3.488
3.494
3.490
3.492
3.496
3.498
LG = V CC
LG = REF
LG = AGND
R9 AND R10 = 4.7 Ω
5.094
1.094
0.001 0.1 1 0.01 10
REFERENCE VOLTAGE
vs. OUTPUT CURRENT
1.594
2.094
MAX1624/25 TOC12
OUTPUT CURRENT (mA)
REFERENCE VOLTAGE (V)
2.594
3.594
3.094
4.094
4.594
SOURCING
CURRENT
SINKING
CURRENT
50
55
0
MAXIMUM DUTY CYCLE
vs. SWITCHING FREQUENCY
65
60
70
MAX1624/25 tTOC13
SWITCHING FREQUENCY (kHz)
MAXIMUM DUTY CYCLE (%)
85
95
90
75
80
200 800 1000 1200
100
600 400
10
-10
1.7 2.3 2.9 1.1 3.5
MAX1624
OUTPUT ERROR vs.
DAC OUTPUT VOLTAGE SETTING
-8
-4
-6
MAX1624/25 TOC19
DAC OUTPUT VOLTAGE SETTING (V)
OUTPUT ERROR (mV)
-2
4
0
2
6
8