MAX16935RAUEB/V Ver la hoja de datos (PDF) - Maxim Integrated
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MAX16935RAUEB/V Datasheet PDF : 17 Pages
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MAX16935/MAX16939
36V, 3.5A, 2.2MHz Step-Down Converter
with 28µA Quiescent Current
Typical Operating Characteristics
(VSUP = VSUPSW = 14V, VEN = 14V, VOUT = 5V, VFYSNC = 0V, RFOSC = 12kI, TA = +25NC, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
toc01
100
90 fSW = 2.2MHz, VIN = 14V
80
70 5V
SKIP MODE
60
50
3.3V
3.3V
40
30
5V
20
PWM MODE
10
0
0.0000
0.0010
0.1000
10.0000
LOAD CURRENT (A)
VOUT LOAD REGULATION
toc04
5.10
5.08
VOUT = 5V, VIN = 14V
5.06 PWM MODE
5.04
400kHz
5.02
5.00
4.98
4.96
4.94
2.2MHz
4.92
4.90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
ILOAD (A)
fSW vs. TEMPERATURE
2.28 VIN = 14V,
PWM MODE
2.24
2.20
VOUT = 5V
2.16
2.12
2.08
2.04
2.00
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
EFFICIENCY vs. LOAD CURRENT
toc02
100
90 fSW = 400kHz, VIN = 14V
80 SKIP MODE
70 5V
60
50
5V
3.3V
3.3V
40
30
PWM MODE
20
10
0
0.0000
0.0010
0.1000
10.0000
LOAD CURRENT (A)
2.30
2.28
2.26
2.24
2.22
2.20
2.18
2.16
2.14
2.12
2.10
0.0
fSW vs. LOAD CURRENT
toc05
VIN = 14V,
PWM MODE
VOUT = 5V
VOUT = 3.3V
0.5 1.0 1.5 2.0 2.5 3.0 3.5
ILOAD (A)
SWITCHING FREQUENCY vs. RFOSC
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
12
42
72
102
132
RFOSC (kΩ)
VOUT LOAD REGULATION
toc03
5.10
5.08 VOUT = 5V, VIN = 14V
5.06 SKIP MODE
5.04
400kHz
5.02
5.00
4.98
4.96
4.94
2.2MHz
4.92
4.90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
ILOAD (A)
445
443
441
439
437
435
433
431
429
427
425
0.0
fSW vs. LOAD CURRENT
toc06
VIN = 14V,
PWM MODE
VOUT = 5V
VOUT = 3.3V
0.5 1.0 1.5 2.0 2.5 3.0 3.5
ILOAD (A)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
50
45
40
35
30
25
20
15 5V/2.2MHz
SKIP MODE
10
6
16
26
36
SUPPLY VOLTAGE (V)
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