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
(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.)
MAX8732A
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
PFM MODE
90
MAX8732A
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
PFM MODE
MAX8732A
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
PFM MODE
80
80
80
70
PWM MODE
70
60
60
50
ULTRASONIC MODE
50
40
40
70
PWM MODE
60
50
ULTRASONIC MODE
40
PWM MODE
ULTRASONIC MODE
30
30
30
20
10
0
0.001
VIN = 7V
ON5 = VCC
ON3 = GND
0.01
0.1
1
10
LOAD CURRENT (A)
20
10
0
0.001
VIN = 12V
ON5 = VCC
ON3 = GND
0.01
0.1
1
10
LOAD CURRENT (A)
20
10
0
0.001
VIN = 24V
ON5 = VCC
ON3 = GND
0.01
0.1
1
10
LOAD CURRENT (A)
MAX8733A
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
PFM MODE
90
MAX8732A
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
100
PWM MODE
MAX8733A
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
100
PWM MODE
80
70
10
ULTRASONIC MODE
10
60
ULTRASONIC MODE
50
ULTRASONIC MODE
40
30
20
10
0
0.001
PWM MODE
ON5 = VCC
ON3 = VCC
VIN = 7V
VIN = 12V
VIN = 24V
0.01
0.1
1
10
LOAD CURRENT (A)
1
PFM MODE
1
PFM MODE
0.1
7
10 13 16 19 22 25
INPUT VOLTAGE (V)
0.1
7
10 13 16 19 22 25
INPUT VOLTAGE (V)
STANDBY INPUT CURRENT
vs. INPUT VOLTAGE
190
188
SHUTDOWN INPUT CURRENT
vs. INPUT VOLTAGE
10.0
9.5
MAX8732A
5V OUTPUT SWITCHING FREQUENCY
vs. LOAD CURRENT MAX8732A
250
VIN = 7V
225
186
184
MAX8732A
182
180
9.0
8.5
MAX8732A
8.0
MAX8733A
7.5
200
PWM MODE
175
150
125
178
7.0
100
176 MAX8733A
6.5
174
6.0
75
50 ULTRASONIC MODE
172
170
7 10 13 16 19 22 25
INPUT VOLTAGE (V)
5.5
5.0
7 10 13 16 19 22 25
INPUT VOLTAGE (V)
25
PFM MODE
0
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
8 ____I_d_le__M_o_d_e__is__a_t_ra_d_e_m__a_rk__o_f _M_a_x_i_m__In_t_e_g_ra_t_e_d_P_r_o_d_u_c_t_s_, _In_c_.___________________________________
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