MAX746CSE View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX746CSE Datasheet PDF : 16 Pages
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High-Efficiency, PWM, Step-Down,
N-Channel DC-DC Controller
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1a, TA = +25°C, unless otherwise noted.)
N0-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.2
1.1
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
4
V+ = 9V
VOUT = 5V
3
CONTINUOUS-CONDUCTION MODE
BOUNDARY AND CORRESPONDING
PEAK INDUCTOR CURRENT
15
DISCONTINUOUS-
CONDUCTION REGION
13
PEAK
INDUCTOR
11 CURRENT
1.0
2
ENTIRE
CIRCUIT
9
0.9
0.8
5
7
9
11
13
15
SUPPLY VOLTAGE (V)
1
0
-75 -50 -25
SCHOTTKY DIODE
LEAKAGE EXCLUDED
0 25 50 75 100 125
TEMPERATURE (°C)
7
CONTINUOUS-
CONDUCTION
REGION
5
0.7 0.9 1.1 1.3 1.5 1.7
OUTPUT CURRENT (A)
EFFICIENCY vs. OUTPUT CURRENT
100
90
VIN = 6V
VIN = 9V
VIN = 12V
80
EFFICIENCY vs. OUTPUT CURRENT
100
CIRCUIT OF FIGURE 1b
VOUT = 3.3V
V+ = 5V
90
80
CIRCUIT OF FIGURE 1a
VOUT = 5V
70
70
0.01
0.1
1
10
0.01
0.1
1
10
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
EFFICIENCY vs. OUTPUT CURRENT
100
CIRCUIT OF FIGURE 1c
VOUT = 5V
VIN = 6V
90
VIN = 12V
80
70
0.01
0.1
1
10
OUTPUT CURRENT (A)
PEAK INDUCTOR CURRENT
vs. OUTPUT CURRENT
4
CIRCUIT OF FIGURE 1a
VOUT = 5V
3
PEAK INDUCTOR CURRENT
vs. OUTPUT CURRENT
4
CIRCUIT OF FIGURE 1b
VOUT = 3.3V
3 V+ = 5V
PEAK INDUCTOR CURRENT
vs. OUTPUT CURRENT
1.5
CIRCUIT OF FIGURE 1c
VOUT = 5V
1.0
2
2
VIN = 12V
VIN = 12V
1
1
VIN = 9V
VIN = 6V
0.5
VIN = 6V
0
0
0.01
0.1
1
10
0.01
0.1
1
10
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
0
0.01
0.1
1
10
OUTPUT CURRENT (A)
4 _______________________________________________________________________________________
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