BL8523
ELECTRICAL CHARACTERISTICS
(Test condition: Ta=25°C, VIN=12V, unless otherwise noted.)
Symbol
VIN
VFB
△
VFB/△ T
fosc
△
fOSC/△
T
IDD1
Istb
ICEH
ICEL
VCEH
VCEL
VUVLO1
VUVLO2
Maxdty
Tstart
Tprot
Item
Operating Input Voltage
Feedback Voltage
Feedback Voltage
Temperature Coefficient
Oscillator Frequency
Oscillator Frequency
Temperature Coefficient
Supply Current 1
Standby Current
CE “H” Input Current
CE “L” Input Current
CE “H” Input Voltage
CE “L” Input Voltage
UVLO Threshold Voltage
UVLO Release Voltage
Oscillator Maximum Duty
Cycle
Delay Time by Soft-start
function
Delay Time for protection
circuit
Conditions
VIN=VCE=12V, Iout=100mA
-25℃ ≤ Topt≤ 85℃
VIN=VCE=12V, Iout=100mA
-25℃ ≤ Topt≤ 85℃
VIN = VCE =12V VFB =1.4V
VIN=12V, VCE =0V
VIN = VCE =12V
VIN =12V, VCE = 0V
VIN = 12V
VIN = 12V
VIN=VCE=5 to 0V
VIN=VCE=0 to 5V
Min.
3
1.196
Typ.
1.221
±100
Max.
16
1.246
Unit
V
V
ppm/℃
300
500
±0.2
80
0
0
700
KHz
%/℃
μA
1
0.5
μA
μA
μA
V
-0.5
1.5
0
0.3
V
V
V
%
ms
μs
1.5
1.6
1.9
2.0
2.3
2.4
100
VIN = 12V,
VCE = 0―>8V
VIN = VCE = 12V
VFB = 2.5V―>0V
2
150
5
200
10
250
TYPICAL APPLICATION CIRCUIT
VIN
Q1
L1
VOUT
R1
U1
CE
VIN EXT
CE
GND
FB
C2
D1
R2
LC2300
BL8523
C1
GND
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