MAX1515 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1515 Datasheet PDF : 24 Pages
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Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
Typical Operating Characteristics
(MAX1515 Circuit of Figure 1, VIN = 2.5V, VDD = VCC = SHDN = MODE = 3.3V, TA = +25°C, unless otherwise noted.)
1.25V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
SOURCE, SKIP
90
80
70 SINK, SKIP
60
50 SOURCE,
40 PWM
30
SINK, PWM
20
10
0
0.001
VIN = 2.5V
VOUT = 1.25V
RTOFF = 110kΩ
0.01
0.1
1
10
LOAD CURRENT (A)
1.25V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
80
SOURCE, SKIP
70
60 SINK, SKIP
50
SOURCE,
40 PWM
30
SINK, PWM
20
10
0
0.001
VIN = 2.5V
VOUT = 1.25V
RTOFF = 220kΩ
0.01
0.1
1
10
LOAD CURRENT (A)
1.25V OUTPUT VOLTAGE
vs. LOAD CURRENT
1.258
1.254
SINK, PWM
SOURCE, PWM
1.250
SINK, SKIP
1.246
VIN = 2.5V
SOURCE, SKIP
VOUT = 1.25V
RTOFF = 110kΩ
1.242
-3 -2 -1 0 1 2 3 4
LOAD CURRENT (A)
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
SOURCE, SKIP
90
80
70 SINK, SKIP
60
50 SOURCE,
40 PWM
30
SINK, PWM
20
10
0
0.001
VIN = 1.8V
VOUT = 0.9V
RTOFF = 110kΩ
0.01
0.1
1
10
LOAD CURRENT (A)
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
100
90
80
70
SOURCE, SKIP
60 SINK, SKIP
50
SOURCE,
40 PWM
30
20
10
0
0.001
SINK, PWM
VIN = 1.8V
VOUT = 0.9V
RTOFF = 220kΩ
0.01
0.1
1
10
LOAD CURRENT (A)
0.9V OUTPUT VOLTAGE
vs. LOAD CURRENT
0.908
0.904
SINK, PWM
SOURCE, PWM
0.900
SINK, SKIP
0.896
SOURCE, SKIP
VIN = 1.8V
VOUT = 0.9V
RTOFF = 110kΩ
0.892
-3 -2 -1 0 1 2 3 4
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. LOAD CURRENT
600
PWM MODE
500
400
300
200
SKIP MODE
100
VIN = 2.5V
VOUT = 1.25V
0
-3 -2 -1 0 1 2 3 4
LOAD CURRENT (A)
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