MAX1624 Datasheet, PDF (7/24 Pages) Maxim Integrated Products – High-Speed Step-Down Controllers with Synchronous Rectification for CPU Power

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