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MAX17003A Datasheet, PDF (10/36 Pages) Maxim Integrated Products – High-Efficiency, Quad-Output, Main Power- Supply Controllers for Notebook Computers
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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.)
SOFT-START WAVEFORM
MAX17003A/MAX17004A toc16
A
B
C
0
0
D
0
0
2V
E
0
F
0
G
0
400μs/div
A. AUX LDO OUTPUT
D. PGDALL, 5V/div
(VOUTA), 5V/div
ON3 = ON5, LDO5
B. 5V OUTPUT (VOUT5), 2V/div E. REF, 2V/div
C. 3.3V OUTPUT (VOUT3), 2V/div F. DL5, 5V/div
G. SHDN, 5V/div
SMPS DELAYED STARTUP SEQUENCE
(ON3 = REF)
MAX17003A/MAX17004A toc17
5V
A
0
5V
B
0
3.3V
C
0
5V
D
0
1ms/div
A. ON5, 5V/div
B. 5V OUTPUT (VOUT5),
5V/div
C. 3.3V OUTPUT (VOUT3),
5V/div
D. PGDALL, 5V/div
SMPS DELAYED STARTUP SEQUENCE
(ON5 = REF)
MAX17003A/MAX17004A toc18
5V
A
0
5V
B
0
3.3V
0
C
5V
D
0
1ms/div
A. ON3, 5V/div
C. 3.3V OUTPUT (VOUT3),
B. 5V OUTPUT (VOUT5), 5V/div
5V/div
D. PGDALL, 5V/div
SMPS SHUTDOWN WAVEFORM
MAX17003A/MAX17004A toc19
3.3V
5V
A
3.3V
B
C
5V
D
0
0
0
E
5V
F
0
4ms/div
A. ON3, ON5, 5V/div
D. PGDALL, 5V/div
B. 5V OUTPUT (VOUT5), 2V/div E. DL5, 5V/div
C. 3.3V OUTPUT (VOUT3), 2V/div F. DL3, 5V/div
OUT5 LOAD TRANSIENT
MAX17003A/MAX17004A toc20
5A
OUT3 LOAD TRANSIENT
MAX17003A/MAX17004A toc21
3A
1A
A
1A
A
5.1V
3.35V
5.0V
B 3.30V
B
4.9V
3.25V
5A
1A
C
3A
C
1A
12V
12V
D
D
0
0
20μs/div
A. IOUT5 = 1A TO 5A, 5A/div
B. VOUT5, 50mV/div
C. INDUCTOR CURRENT,
5A/div
D. LX5, 10V/div
20μs/div
A. IOUT3 = 1A TO 3A, 5A/div
B. VOUT3, 50mV/div
C. INDUCTOR CURRENT,
5A/div
D. LX3, 10V/div
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