MAX8744A View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8744A
Maxim Integrated
MAX8744A Datasheet PDF : 36 Pages
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High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = 12V, SKIP = GND, FSEL = REF, TA = +25°C, unless otherwise noted.)
3.3V IDLE MODE CURRENT
vs. INPUT VOLTAGE
3
SKIP MODE
SKIP = GND
2
3.3V SWITCHING FREQUENCY
vs. LOAD CURRENT
1000
FORCED-PWM
100
LOW-NOISE SKIP
1
LOW-NOISE MODE
SKIP = REF
0
0
4
8
12
16
20
INPUT VOLTAGE (V)
10
PULSE SKIPPING
1
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
REFERENCE OFFSET VOLTAGE
DISTRIBUTION
50
+85°C
SAMPLE SIZE = 125
+25°C
40
30
20
10
0
-10 -6
-2
2
6
10
2V REF OFFSET VOLTAGE (mV)
LDO5 OUTPUT VOLTAGE
vs. LOAD CURRENT
5.0
4.9
4.8
4.7
4.6
4.5
0
20
40
60
80
100
LOAD CURRENT (mA)
12.2
12.1
12.0
11.9
0
OUTA OUTPUT VOLTAGE
vs. LOAD CURRENT
50
100
150
LOAD CURRENT (mA)
LDO5 POWER-UP
MAX8744A toc15
12V
5V
A
2V
1V
B
5V
0
C
5V
0
D
1ms/div
A. INPUT SUPPLY, 5V/div C. LDO5, 5V/div
B. REF, 2V/div
D. PGOOD5, 5V/div
SHDN = IN
10 ______________________________________________________________________________________
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