LX1555CDT データシートの表示（PDF） - Microsemi Corporation
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LX1555CDT Datasheet PDF : 18 Pages
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PRODUCT DATABOOK 1996/1997
ULTRA-LOW START-UP CURRENT, CURRENT-MODE PWM
PRODUCTION DATA SHEET
LX1552/3/4/5
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for LX155xC with 0°C ≤ TA ≤ 70°C, LX155xI with -40°C ≤ TA ≤ 85°C, LX155xM
with -55°C ≤ TA ≤ 125°C; VCC=15V (Note 5); RT=10K; CT=3.3nF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the
ambient temperature.)
Parameter
Symbol
Test Conditions
LX155xI/155xM
LX155xC
Units
Min. Typ. Max. Min. Typ. Max.
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 2 & 7)
VREF TA = 25°C, IL = 1mA
12 ≤ VIN ≤ 25V
1 ≤ IO ≤ 20mA
4.95 5.00 5.05 4.95 5.00 5.05
6 20
6 20
6 25
6 25
0.2 0.4
0.2 0.4
V
mV
mV
mV/°C
Total Output Variation
Over Line, Load, and Temperature
4.9
5.1 4.9
5.1 V
Output Noise Voltage (Note 2)
Long Term Stability (Note 2)
Output Short Circuit
Oscillator Section
VN 10Hz ≤ f ≤ 10kHz, TA = 25°C
TA = 125°C, t = 1000hrs
ISC
50
50
µV
5 25
5 25 mV
-30 -100 -180 -30 -100 -180 mA
Initial Accuracy (Note 6)
Voltage Stability
Temperature Stability (Note 2)
Amplitude (Note 2)
Discharge Current
Error Amp Section
TA = 25°C
48.5 50.5 52.5 48.5 50.5 52.5 kHz
TA = 25°C, RT = 698Ω, CT = 22nF, LX1552/3 only
56 58 60 56 58 60 kHz
12 ≤ VCC ≤ 25V
0.2 1
0.2 1
%
TMIN ≤ TA ≤ TMAX
5
5
%
VPIN 4 peak to peak
1.7
1.7
V
ID
TA = 25°C, VPIN 4 = 2V
8.0 8.3 8.6 8.0 8.3 8.6 mA
VPIN 4 = 2V, TMIN ≤ TA ≤ TMAX
7.6
8.8 7.8
8.8 mA
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 2)
Power Supply Rejection Ratio (Note 3)
Output Sink Current
Output Source Current
Output Voltage High Level
Output Voltage Low Level
Current Sense Section
IB
AVOL
UGBW
PSRR
IOL
IOH
VOH
VOL
VPIN 1 = 2.5V
2 ≤ VO ≤ 4V
TA = 25°C
12 ≤ VCC ≤ 25V
VPIN 2 = 2.7V, VPIN 1 = 1.1V
VPIN 2 = 2.3V, VPIN 1 = 5V
VPIN 2 = 2.3V, RL = 15K to ground
VPIN 2 = 2.7V, RL = 15K to VREF
2.45 2.50 2.55 2.45 2.50 2.55 V
-0.1 -1
-0.1 -0.5 µA
65 90
65 90
dB
0.6
0.6
MHz
60 70
60 70
dB
24
24
mA
-0.5 -0.8
-0.5 -0.8
mA
5 6.5
5 6.5
V
0.7 1.1
0.7 1.1 V
Gain (Note 3 & 4)
Maximum Input Signal (Note 3)
Power Supply Rejection Ratio (Note 3)
Input Bias Current
Delay to Output (Note 2)
Output Section
AVOL
PSRR
IB
TPD
VPIN 1 = 5V
12 ≤ VCC ≤ 25V
VPIN 3 = 0 to 2V
2.85 3 3.15 2.85 3 3.15 V/V
0.9 1 1.1 0.9 1 1.1 V
70
70
dB
-2 -10
-2 -5 µA
150 300
150 300 ns
Output Voltage Low Level
Output Voltage High Level
Rise Time (Note 2)
Fall Time (Note 2)
UVLO Saturation
VOL ISINK = 20mA
ISINK = 200mA
VOH ISOURCE = 20mA
ISOURCE = 200mA
TR TA = 25°C, CL = 1nF
TF TA = 25°C, CL = 1nF
VSAT VCC = 5V, ISINK = 10mA
0.1 0.4
0.1 0.4 V
1.5 2.2
1.5 2.2 V
13 13.5
13 13.5
V
12 13.5
12 13.5
V
50 100
50 100 ns
50 100
50 100 ns
0.7 1.2
0.7 1.2 V
(Electrical Characteristics continue next page.)
Copyright © 1994
Rev. 1.0a 1/01
3
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