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ADUM4470 Datasheet PDF : 36 Pages
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ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474
Data Sheet
ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
3.0 V ≤ VDD1 = VDDA ≤ 3.6 V; VDD2 = VREG = VISO = 3.3 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 = 3.3 V, VDD2 = VREG = VISO = 3.3 V.
Table 2. DC-to-DC Converter Static Specifications
Parameter
Symbol
Min
DC-TO-DC CONVERTER SUPPLY
Isolated Output Voltage
VISO
3.0
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)
250
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
−10
VIH
1.6
VIL
Typ
3.3
1.25
1
1
50
100
1000
200
318
0.6
2.8
2.6
0.2
68
Max
3.6
1.37
10
2
515
Unit
Test Conditions/Comments
V
V
mV/V
%
mV p-p
mV p-p
kHz
kHz
kHz
Ω
IISO = 0 mA,
VISO = VFB × (R1 + R2)/R2
IISO = 0 mA
IISO = 50 mA,
VDD11 = VDDA2 = 4.5 V to 5.5 V
IISO = 50 mA to 200 mA
20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
20 MHz bandwidth,
COUT = 0.1 µF||47 µF, IISO = 100 mA
ROC = 50 kΩ
ROC = 270 kΩ
VOC = VDD2 (open-loop)
V
V
V
mA
f ≤ 1 MHz, VISO = 5.0 V
%
IISO = IISO , (MAX) f ≤ 1 MHz
IISO = 0 mA, f ≤ 1MHz
9
20
mA
10
20
mA
11
20
mA
11
20
mA
12
20
mA
28
29
31
32
34
244
243
241
240
238
350
+0.01
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
+10
µA
V
0.4
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 6 of 36
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