Si8540
Rev. 1.2
5
Table 2. DC and AC Characteristics
(Unless otherwise specified: VRG1 =+5 to +36V, RG1=RG2=200, VSENSE =0 V, TA = –40 to +85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Operating Voltage
VRG1
5—
36
V
Operating Frequency
F
0
20
—
kHz
Total Input Current
IRG1+IRG2
ILOAD = 0 A
—
46
90
A
Input Currents
IRG1, IRG2
ILOAD = 0 A
—
23
45
A
Input Current Matching
IOS
IRG1 – IRG2
—
±0.4
±1.5
A
VSENSE
—
100
—
mV
OUT Current Accuracy
IRG/IOUT
VSENSE = 100 mV
—
±0.2
±1.5
%
No-Load OUT Error
VRG1 =10V, VSENSE =0V
—
0.5
15
A
Low-Level OUT Error
VRG1 =10V, VSENSE =3mV
—
±0.5
+10
A
Power-Supply Rejection
PSR
VSENSE = 100 mV
—
-85
—
dB
Shutdown Supply Current
IRG1+IRG2
VSHDN =2.4 V
—
3.5
9
A
SHDN Input Low Voltage
VIL
——
0.3
V
SHDN Input Low Current
IIL
VSHDN =0V
—
1.0
A
SHDN Input High Voltage
VIH
2.4
—
V
SHDN Input High Current
IIH
VSHDN = 2.4 V
—
1.0
A
OUT Output Voltage Range
VOUT
VOUT clamped at 8 V
0
—
VRG1 – 3.5
(<8)
V
OUT Output Resistance
(Internal)
IOUT =1.5 mA
1
3
—
M
OUT Rise, Fall Time
VSENSE = 5 mV to 150 mV,
ROUT =2 =k,
COUT = 50 pF, 10% to 90%
(Note 2)
—
0.4
0.5
—
s
OUT Settling Time to 1% of
Final Value
VSENSE = 5 to 150 mV,
ROUT =2k,
COUT = 50 pF (Note 2)
—
1
2
—
s
Maximum Output Current
IOUT
For IOUT > 1.5 mA the internal
current limitation starts to limit the
output current
1.5
—
10
mA
Notes:
1. VSENSE is the voltage across the sense resistor.
2. COUT is the load capacitance seen by the OUT pin.