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Absolute Maximum Ratings
PARAMETER
VDD Pin Voltage
VDD Current
SW Pin Voltage
SW Current
Value
-0.3 ~ 6
20
Unit
V
mA
V
-0.3~30
Internally limited
0.6
A
Maximum Power Dissipation (TO-92)
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
ESD Voltage (HBM)
W
oC
oC
oC
V
-40 ~+150
-55 ~+150
300
5500
Electrical Characteristics (Ta=27°C unless otherwise noted, VDD = 4.5V.)
PARAMETER
VDD Start Voltage
SW Start Voltage
SYMBOL
VSTART
TEST CONDITIONS
MIN
5.20
8.00
TYP MAX UNIT
Rising edge
5.40
8.60
5.60
9.20
V
V
VSWST
VDD Under-voltage
Threshold
VUV
Falling edge
3.40
5.40
3.60
3.80
V
VDD Clamp Voltage
Startup Supply Current
VDD Supply Current
VVDD (Max)
IDDST
IVDD=10mA
5.60
0.20
1.50
67
5.80
0.40
2.00
72
V
VDD = 4V before VUV
mA
mA
IDD
RS2030A
RS2030B
62
90
Switching Frequency
fSW
kHz
100
66.7
3.5
110
71.7
Maximum Duty Cycle
Minimum Duty Cycle
DMAX
DMIN
VDD = 5.0V
VDD = 5.0V
62.7
%
%
380
760
400
420
840
Effective Current Limit
ILIM
VDD = VUV + 0.1V
mA
800
VDD to SW Current
Coefficient
GGAIN
0.29
A/V
VDD Dynamic Impedance
SW Driver On-Resistance
SW Rise Time
RVDD
RSW
9
3.0
30
20
5
kΩ
Ω
ISW=100mA
1nF load, 15Ω pull-up
1nF load, 15Ω pull-up
Driver off
ns
ns
uA
SW Fall Time
SW Switch Off Current
10
DS-RS2030X-EN-V1 Dec, 2007
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ORISTER [ ORISTER CORPORATION ]
