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ADuM4472ARIZ Datasheet(PDF) 10 Page - Analog Devices

No. de pieza ADuM4472ARIZ
Descripción Electrónicos  Isolated Switching Regulator with Quad-Channel Isolators
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ADuM4472ARIZ Datasheet(HTML) 10 Page - Analog Devices

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ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474
Data Sheet
Rev. 0 | Page 10 of 36
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/15 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ VDD1 = VDDA ≤ 5.5 V; VREG = VISO = 15 V; VDD2 = 5.0 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the
application schematic in Figure 49. All minimum/maximum specifications apply over the entire recommended operating range, unless
otherwise noted. All typical specifications are at TA = 25°C, VDD1 = VDDA = 5.0 V, VREG = VISO = 15 V, VDD2 = 5.0 V.
Table 4. DC-to-DC Converter Static Specifications
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY
Isolated Output Voltage
VISO
13.8
15
16.2
V
IISO = 0 mA,
VISO = VFB × (R1 + R2)/R2
Feedback Voltage Setpoint
VFB
1.15
1.25
1.37
V
IISO = 0 mA
VDD2 Linear Regulator
Regulator Voltage
4.5
5.0
5.5
V
VREG = 7 V to 15 V,
IDD2 = 0 mA to 50 mA
Dropout Voltage
0.5
1.5
IDD2 = 50 mA
Line Regulation
VISO(LINE)
1
20
mV/V
IISO = 50 mA,
VDD11 = VDDA2 = 4.5 V to 5.5 V
Load Regulation
VISO(LOAD)
1
3
%
IISO = 20 mA to 80 mA
Output Ripple
VISO(RIP)
200
mV p-p
20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
Output Noise
VISO(NOISE)
500
mV p-p
20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
Switching Frequency
fSW
1000
kHz
ROC = 50 kΩ
200
kHz
ROC = 270 kΩ
192
318
515
kHz
VOC = VDD2 (open-loop)
Switch On-Resistance
RON
0.5
Ω
Undervoltage Lockout, VDDA, VDD2 Supplies
Positive Going Threshold
VUV+
2.8
V
Negative Going Threshold
VUV−
2.6
V
Hysteresis
VUVH
0.2
V
DC to 2 Mbps Data Rate3
Maximum Output Supply Current4
IISO (MAX)
100
mA
f
1 MHz, VISO = 5.0 V
Efficiency at Maximum Output Current5
78
%
IISO = IISO(MAX), f 1 MHz
iCoupler DATA CHANNELS
DC to 2 Mbps Data Rate
IDD1 Supply Current, No VISO Load
IDD1(Q)
IISO = 0 mA, f 1 MHz
ADuM4470
25
45
mA
ADuM4471
27
45
mA
ADuM4472
29
45
mA
ADuM4473
31
45
mA
ADuM4474
33
45
mA
25 Mbps Data Rate (CRIZ Grade Only)
IDD1 Supply Current, No VISO Load
IDD1(D)
ADuM4470
73
mA
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
ADuM4471
83
mA
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
ADuM4472
93
mA
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
ADuM4473
102
mA
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
ADuM4474
112
mA
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
Available VISO Supply Current6
IISO (LOAD)
fSW = 500 kHz
ADuM4470
91
mA
CL = 15 pF, f = 12.5 MHz
ADuM4471
89
mA
CL = 15 pF, f = 12.5 MHz
ADuM4472
86
mA
CL = 15 pF, f = 12.5 MHz
ADuM4473
83
mA
CL = 15 pF, f = 12.5 MHz
ADuM4474
80
mA
CL = 15 pF, f = 12.5 MHz
IDD1 Supply Current, Full VISO Load
425
mA
CL = 0 pF, f = 0 MHz, VDD1 = VDDA =
5 V, IISO = 400 mA


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