SI88240ED-IS Datasheet, PDF (4/48 Pages) Silicon Laboratories – QUAD DIGITAL ISOLATORS WITH DC-DC CONVERTER

Si88x4x
Table 2. Electrical Characteristics¹ (Continued)
V_IN = 24 V; V_DDA = 4.3 V (see Figure 3) for all Si8844x/64x; V_DDA = V_DDP = 3.0 to 5.5 V (see Figure 2) for all Si8824x/34x;
T_A = –40 to 125 °C unless otherwise noted
Parameter
Symbol
Test Condition
Min Typ Max Unit
Output Voltage
Accuracy²
See Figure 2
ILOAD = 0 mA
–5
—
+5
%
Line Regulation
VOUT(line)/V
See Figure 2
1
DDP
ILOAD = 50 mA
VDDP varies from 4.5 to 5.5 V
mV/V
Load Regulation
VOUT(load)/V
OUT
See Figure 2
ILOAD = 50 to 400 mA
0.1
%
Output Voltage Ripple
Si8824x, Si8834x
Si8844x, Si8864x
ILOAD = 100 mA
See Figure 2
See Figure 3
100
mV p-p
Turn-on overshoot
VOUT(start)
See Figure 2
2
%
CIN = COUT = 0.1 μF in
parallel with 10 μF,
ILOAD = 0 A
Continuous Output Current
Si8824x, Si8834x
5.0 V to 5.0 V
3.3 V to 3.3 V
3.3 V to 5.0 V
5.0 V to 3.3 V
Si8844x, Si8864x
24.0 to 5.0 V
24.0 to 3.0 V
ILOAD(max)
See Figure 2
See Figure 3
mA
400
400
250
550
1000
1500
Cycle-by-cycle average
current limit
Si8824x, Si8834x
No Load Supply Current
IDDP
Si8824x, Si8834x
No Load Supply Current
IDDA
Si8824x, Si8834x
ILIM
IDDPQ_DCDC³
IDDAQ_DCDC⁴
See Figure 2
Output short circuited
See Figure 2
VDDP = VDDA = 5 V
See Figure 2
VDDP = VDDA = 5 V
3
A
30
mA
5.7
mA
Notes:
1. Over recommended operating conditions as noted in Table 1.
2. VOUT = VSNS x (1 + R1/R2) + R1 x I_offset
3. VDDP current needed for dc-dc circuits.
4. VDDA current needed for dc-dc circuits.
5. The nominal output impedance of an isolator driver channel is approximately 50 , ±40%, which is a combination of the
value of the on-chip series termination resistor and channel resistance of the output driver FET. When driving loads
where transmission line effects will be a factor, output pins should be appropriately terminated with controlled
impedance PCB traces.
6. tPSK(P-P) is the magnitude of the difference in propagation delay times measured between different units operating at
the same supply voltages, load, and ambient temperature.
7. Start-up time is the time period from when the UVLO threshold is exceeded to valid data at the output.
4
Preliminary Rev. 0.6