Data Sheet
ADuM6420A/ADuM6421A/ADuM6422A
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY
All typical specifications are at TA = 25°C, VDDP = VISO = 5 V. Minimum and maximum specifications apply over the entire recommended
operation range, which is 4.5 V ≤ (VDDP, VISO) ≤ 5.5 V and −40°C ≤ TA ≤ +125°C, unless otherwise noted.
Table 2. DC-to-DC Converters Static Specifications
Parameter
Symbol
Min Typ Max
Unit
Test Conditions/Comments
DC-TO-DC CONVERTERS SUPPLY
Setpoint
Line Regulation
Load Regulation
Output Ripple
VISO
4.75 5.0
5.25
5
V
ISO current (IISO) = 10 mA
IISO = 50 mA, VDD1 = 4.5 V to 5.5 V
IISO = 10 mA to 90 mA
VISO (LINE)
VISO (LOAD)
VISO (RIP)
20
1
75
mV/V
%
mV p-p 20 MHz bandwidth, bulk output capacitance
(CBO) = 0.1 μF||10 μF, IISO = 90 mA
Output Noise
VISO (NOISE)
fOSC
fPWM
200
180
625
mV p-p CBO = 0.1 μF||10 μF, IISO = 90 mA
MHz
kHz
Switching Frequency
Pulse-Width Modulation (PWM) Frequency
Output Supply1
IISO (MAX)
100
50
mA
mA
%
4.5 V < VISO < 5.25 V
4.75 V < VISO < 5.25 V
IISO = 100 mA, TA = 25°C
1
Efficiency at IISO (MAX)
34
VDD1 Supply Current
No VISO Load
Full VISO Load
IDDP (Q)
IDDP (MAX)
14
310
25
mA
mA
Thermal Shutdown
Shutdown Temperature
Thermal Hysteresis
154
10
°C
°C
1 Maximum VISO output current is derated by 1.75 mA/°C for TA > 85°C.
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
All typical specifications are at TA = 25°C, VDDP = 5.0 V, VISO = 3.3 V. Minimum and maximum specifications apply over the entire
recommended operation range, which is 4.5 V ≤ VDDP ≤ 5.5 V, 3.0 V ≤ VISO ≤ 3.6 V, and −40°C ≤ TA ≤ +125°C, unless otherwise noted.
Table 3. DC-to-DC Converters Static Specifications
Parameter
Symbol Min
Typ Max
Unit
Test Conditions/Comments
DC-TO-DC CONVERTERS SUPPLY
Setpoint
VISO
3.135 3.3
3.465
V
IISO = 10 mA
Line Regulation
Load Regulation
Output Ripple
Output Noise
Switching Frequency
Pulse-Width Modulation Frequency
Output Supply1
VISO (LINE)
VISO (LOAD)
VISO (RIP)
VISO (NOISE)
fOSC
20
1
50
130
180
625
mV/V
%
IISO = 50 mA, VDD1 = 3.0 V to 3.6 V
IISO = 10 mA to 90 mA
5
mV p-p 20 MHz bandwidth, CBO = 0.1 μF||10 μF, IISO = 90 mA
mV p-p CBO = 0.1 μF||10 μF, IISO = 90 mA
MHz
kHz
mA
mA
%
fPWM
IISO (MAX)
100
50
3.0 V < VISO < 3.4 V
3.135 V < VISO < 3.465 V
IISO = 100 mA
1
Efficiency at IISO (MAX)
34
VDDP Supply Current
No VISO Load
Full VISO Load
IDDP (Q)
IDDP (MAX)
14
250
20
mA
mA
Thermal Shutdown
Shutdown Temperature
Thermal Hysteresis
154
10
°C
°C
1 Maximum VISO output current is derated by 1.75 mA/°C for TA > 85ºC.
Rev. A | Page 3 of 26