MAX8734 Maxim Integrated Products, MAX8734 Datasheet - Page 9

• Manufacturer Part Number: MAX8734
• Description: (MAX8732 - MAX8734) Main Power-Supply Controllers
• Manufacturer: Maxim Integrated Products

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(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
R
CS
360
320
280
240
200
160
120
500
450
400
350
300
250
200
150
100
80
40
50
600
550
500
450
400
350
300
250
200
150
100
0
0
50
0.001
= 7mΩ, V
0
FREQUENCY vs. LOAD CURRENT (MAX8733)
FREQUENCY vs. LOAD CURRENT (MAX8733)
0.001
0.001
3.3V OUTPUT SWITCHING FREQUENCY
ULTRASONIC MODE
V
PWM MODE
PWM MODE
IN
PWM MODE
ULTRASONIC MODE
vs. LOAD CURRENT (MAX8732)
= 7V
Supply Controllers for Notebook Computers
3.3V OUTPUT SWITCHING
0.01
5V OUTPUT SWITCHING
0.01
ILIM
0.01
High-Efficiency, Quad-Output, Main Power-
LOAD CURRENT (A)
IDLE MODE
LOAD CURRENT (A)
LOAD CURRENT (A)
_ = 0.5V, T
_______________________________________________________________________________________
0.1
0.1
PFM MODE
0.1
IDLE MODE
A
= +25°C, unless otherwise noted.)
1
1
1
V
V
IN
IN
= 7V
= 24V
10
10
10
5.19
5.17
5.15
5.13
5.11
5.09
5.07
5.05
250
225
200
175
150
125
100
75
50
25
600
550
500
450
400
350
300
250
200
150
100
0
Typical Operating Characteristics (continued)
50
0.001
0
FREQUENCY vs. LOAD CURRENT (MAX8732)
0.001
FREQUENCY vs. LOAD CURRENT (MAX8733)
0.001
FORCED-PWM
PWM MODE
PWM MODE
vs. LOAD CURRENT (MAX8732)
OUT5 VOLTAGE REGULATION
ULTRASONIC MODE
ULTRASONIC MODE
3.3V OUTPUT SWITCHING
IDLE MODE
0.01
5V OUTPUT SWITCHING
0.01
0.01
LOAD CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
ULTRASONIC
0.1
PFM MODE
0.1
V
0.1
IN
= 7V
PFM MODE
1
1
1
V
IN
= 24V
10
10
10
400
360
320
280
240
200
160
120
500
450
400
350
300
250
200
150
100
3.41
3.40
3.39
3.38
3.37
3.36
3.35
3.34
3.33
80
40
50
0
0
0.001
FREQUENCY vs. LOAD CURRENT (MAX8732)
FREQUENCY vs. LOAD CURRENT (MAX8733)
0.001
0.001
FORCED-PWM
PWM MODE
PWM MODE
vs. LOAD CURRENT (MAX8732)
ULTRASONIC MODE
ULTRASONIC MODE
OUT3 VOLTAGE REGULATION
3.3V OUTPUT SWITCHING
0.01
5V OUTPUT SWITCHING
0.01
IDLE MODE
0.01
LOAD CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
ULTRASONIC
PFM MODE
0.1
0.1
0.1
CC
PFM MODE
, SHDN = V+,
1
1
1
V
V
IN
IN
= 24V
= 24V
10
10
10
9