UC3842G(2007) Просмотр технического описания (PDF) - Unisonic Technologies
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UC3842G Datasheet PDF : 8 Pages
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UC3842G
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta＝25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage (Low Impedance Source)
VCC
30
V
Supply Voltage (ICC<30mA)
VCC
Self Limiting
V
Output Current (Peak)
IO(PEAK)
±1
A
Output Energy (Capacity load)
5
µJ
Junction Temperature
TJ
+150
°C
Operating Temperature
Storage Temperature
TOPR
-40 ~ +125
°C
TSTG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(0°C≤Ta≤70°C, VCC=15V, CT=3.3n , unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
STANDBY SECTION
Reduce Frequency Point of Standby Mode VCOMP Right load
REFERENCE SECTION
Reference Output Voltage
VREF IOUT=1.0mA
Line Regulation
∆VREF 12V≤VCC≤25V
Load Regulation
∆VREF IOUT=1.0mA to 20mA
Output Short Circuit Current
ISC
OSCILLATOR SECTION
Frequency
fOSC1 Normal
Frequency
fOSC2 No load or right load
Frequency Change
∆fOSC/∆V 12V≤VCC≤25V
Oscillator Voltage
VOSC(P-P)
VOSCL
VOSCH
ERROR AMPLIFIER SECTION
Input Voltage
VI(EA) VCOMP=2.5V
Input Bias Current
II(BIAS) VFB=5V
AVOL
2V≤VOUT≤4V
Unity Gain Bandwidth
TJ=25°C(Note1)
PSRR
12V≤VCC≤25V
Output Sink Current
ISINK VFB=2.7V, VCOMP=1.1V
Output Source Current
ISOURCE VFB=2.3V, VCOMP=5V
VOUT High
VOH VFB=2.3V, RL=15K to GND
VOUT Low
VOL VFB=2.7V, RL=15K to VREF
CURRENT SENSE SECTION
Gain
GV (Note2,3)
Maximum Input Signal
VI(MAX) VCOMP=5V(Note2)
PSRR
12V≤VCC≤25V
Input Bias Current
IBIAS
Delay to Output
MIN TYP MAX UNIT
2.2
V
4.95 5.0 5.05 V
3 20 mV
8 25 mV
-30 -65 -180 mA
49 52 55 KHz
14
KHz
0.2 1.0 ％
1.6
V
1.2
V
2.8
V
2.42 2.50 2.58 V
-0.3 -2 µA
60 90
dB
0.7 1
MHz
60 70
dB
2
4
mA
-0.5 -0.7
mA
5.0 5.6
V
0.8 1.1 V
2.85 3 3.15 V/V
0.9 1 1.1 V
70
dB
-2 -10 µA
150 300 nS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R103-036,A
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