Electrical Characteristics (Vcc= 5V, Ta=25°C (unless otherwise specified.)
Parameter
Test Condictions
Symbol
MIN. TYP. MAX. Unit
Oscillator
Frequency
VPIN5 = 0V ,CT = 1nF
5.0V~VCC~40V
5.0V~VCC~40V
PIN 3
fOSC
24
24
35
35
46
46
KHZ
µA
µA
V
Charging Current
Discharge Current
Voltage Swing
ICHG
IDISCHG
140
220
260
0.6
6.0
VOSC
Discharge to Charge Current
Ratio
VIPK(SENSE) =VCC
IDISCHG/ ICHG
Current Limit Sense Voltage
250 320 400
mV
VIPK(SENSE)
ICHG=IDISCHG
Output Switch
Saturation Voltage, Darlington
Connection
1.0
1.3
V
V
ISW=1.0A;
VCE(SAT)
VC(DRIVER)=VC(SWITCH)
Saturation Voltage
0.45
0.7
ISW=1.0A; IC(DRIVER)=50mA
(Forced ß=20)
VCE (SAT)
DC Current Gain
50
75
10
hFE
ISW=1.0A; VCE=5.0V
VCE=40V
Collector Off-State Current
Comparator
nA
IC(OFF)
Threshold Voltage
Threshold Voltage
0°C~Ta~70°C
1.225 1.25 1.275
V
V
VFB
1.19
1.31
Threshold Voltage Line
Regulation
3.0V~VCC~40V
VIN=0V
REGLINE
0.10.3
mV/V
Input Bias Current
IIB
0.41
µA
Supply current
VIPK(SENSE)=VCC
VPIN 5>VFB
ICC
4
Ma
5.0V~VCC~40V
CT=0.001µF, PIN 2=GND
3
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