MAX8732A Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8732A
Maxim Integrated
MAX8732A Datasheet PDF : 33 Pages
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Typical Operating Characteristics (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = VCC, SHDN = V+,
RCS = 7mΩ, VILIM_ = 0.5V, TA = +25°C, unless otherwise noted.)
MAX8733A/MAX8734A (TON = GND)
5V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX8732A/3A/4A toc28
MAX8732A/MAX8734A (TON = VCC)
3.3V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX8732A/3A/4A toc29
MAX8733A/MAX8734A (TON = GND)
3.3V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX8732A/3A/4A toc30
5V
VOUT,
AC-
COUPLED
3.3V
VOUT,
AC-
3.3V
COUPLED
VOUT,
AC-
COUPLED
100mV/div
100mV/div
100mV/div
4A
INDUCTOR 4A
INDUCTOR 4A
INDUCTOR
CURRENT
CURRENT
CURRENT
1A
2A/div
1A
2A/div
1A
2A/div
5V
5V
5V
DL5
DL3
DL3
0
5V/div
0
5V/div
0
5V/div
10µs/div
20µs/div
10µs/div
MAX8733A
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
80
PFM MODE
70
60
50
40
30
20
10
0
0.001
ULTRASONIC
MODE
PWM MODE
ON5 = VCC
ON3 = GND
VIN = 7V
VIN = 12V
VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
MAX8733A
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
80
PFM MODE
70
60
50
40
30
20
10
0
0.001
ULTRASONIC
MODE
PWM MODE
ON5 = VCC
ON3 = VCC
VIN = 7V
VIN = 12V
VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
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