ADUM4470 Просмотр технического описания (PDF) - Analog Devices
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ADUM4470 Datasheet PDF : 36 Pages
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ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474
Data Sheet
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ (VDD1 = VDDA) ≤ 5.5 V; VDD2 = VREG = VISO = 5.0 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the
application schematic in Figure 48. 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, VDD2 = VREG = VISO = 5.0 V.
Table 1. DC-to-DC Converter Static Specifications
Parameter
Symbol
Min
DC-TO-DC CONVERTER SUPPLY
Isolated Output Voltage
VISO
4.5
Feedback Voltage Setpoint
Line Regulation
VFB
VISO (LINE)
1.15
Load Regulation
Output Ripple
VISO (LOAD)
VISO (RIP)
Output Noise
VISO (NOISE)
Switching Frequency
fSW
192
Switch On-Resistance
RON
Undervoltage Lockout, VDDA, VDD2 Supplies
Positive Going Threshold
VUV+
Negative Going Threshold
VUV−
Hysteresis
VUVH
DC to 2 Mbps Data Rate3
Maximum Output Supply Current4
IISO (MAX)
400
Efficiency at Maximum Output Current5
iCoupler DATA CHANNELS
DC to 2 Mbps Data Rate
IDD1 Supply Current, No VISO Load
ADuM4470
IDD1 (Q)
ADuM4471
ADuM4472
ADuM4473
ADuM4474
25 Mbps Data Rate (CRIZ Grade Only)
IDD1 Supply Current, No VISO Load
ADuM4470
IDD1 (D)
ADuM4471
ADuM4472
ADuM4473
ADuM4474
Available VISO Supply Current6
ADuM4470
IISO (LOAD)
ADuM4471
ADuM4472
ADuM4473
ADuM4474
IDD1 Supply Current, Full VISO Load
I/O Input Currents
Logic High Input Threshold
Logic Low Input Threshold
IIA, IIB, IIC, IID
−20
VIH
2.0
VIL
Typ
5.0
1.25
1
1
50
100
1000
200
318
0.5
2.8
2.6
0.2
500
72
Max Unit
Test Conditions/Comments
5.5 V
IISO = 0 mA,
VISO = VFB × (R1 + R2)/R2
1.37 V
IISO = 0 mA
10
mV/V
IISO = 50 mA,
VDD11 = VDDA2 = 4.5 V to 5.5 V
2
%
IISO = 50 mA to 200 mA
mV p-p 20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
mV p-p 20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
kHz
ROC = 50 kΩ
kHz
ROC = 270 kΩ
515 kHz
VOC = VDD2 (open-loop)
Ω
V
V
V
mA
f ≤ 1 MHz, VISO = 5.0 V
%
IISO = IISO , (MAX) f ≤ 1 MHz
IISO = 0 mA, f ≤ 1 MHz
14
30
mA
15
30
mA
16
30
mA
17
30
mA
18
30
mA
44
mA
46
mA
48
mA
50
mA
52
mA
390
mA
388
mA
386
mA
384
mA
382
mA
550
mA
+0.01 +20 µA
V
0.8 V
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
IISO = 0 mA, CL = 15 pF, f = 12.5 MHz
fSW = 500 kHz
CL = 15 pF, f = 12.5 MHz
CL = 15 pF, f = 12.5 MHz
CL = 15 pF, f = 12.5 MHz
CL = 15 pF, f = 12.5 MHz
CL = 15 pF, f = 12.5 MHz
CL = 0 pF, f = 0 MHz, VDD1 = VDDA =
5 V, IISO = 400 mA
Rev. 0 | Page 4 of 36
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