UC3842G Datasheet, PDF (4/8 Pages) Unisonic Technologies – HIGH PERFORMANCE CURRENT MODE CONTROLLER

UC3842G
LINEAR INTEGRATED CIRCUIT
„ ABSOLUTE MAXIMUM RATINGS (T_A＝25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage (Low Impedance Source)
V_CC
30
V
Supply Voltage (I_CC<30mA)
V_CC
Self Limiting
V
Output Current (Peak)
I_O(PEAK)
±1
A
Output Energy (Capacity load)
5
μJ
Junction Temperature
T_J
+150
°C
Operating Temperature
Storage Temperature
T_OPR
T_STG
-40 ~ +125
°C
-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≤T_A≤70°C, V_CC=15V, C_T=3.3nF , unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
STANDBY SECTION
Reduce Frequency Point of Standby Mode
REFERENCE SECTION
V_COMP Right load
Reference Output Voltage
V_REF I_OUT=1.0mA
Line Regulation
ΔV_REF 12V≤V_CC≤25V
Load Regulation
ΔV_REF I_OUT=1.0mA to 20mA
Output Short Circuit Current
I_SC
OSCILLATOR SECTION
Frequency
f_OSC Normal
Frequency Change
Δf_OSC/ΔV 12V≤V_CC≤25V
V_OSC(P-P)
Oscillator Voltage
V_OSCL
V_OSCH
ERROR AMPLIFIER SECTION
Input Voltage
V_I(EA) V_COMP=2.5V
Input Bias Current
I_I(BIAS) V_FB=5V
AVOL
2V≤V_OUT≤4V
Unity Gain Bandwidth
T_J=25°C(Note1)
PSRR
12V≤V_CC≤25V
Output Sink Current
I_SINK V_FB=2.7V, V_COMP=1.1V
Output Source Current
I_SOURCE V_FB=2.3V, V_COMP=5V
V_OUT High
V_OH V_FB=2.3V, R_L=15K to GND
V_OUT Low
CURRENT SENSE SECTION
V_OL V_FB=2.7V, R_L=15K to V_REF
Gain
G_V (Note2,3)
Maximum Input Signal
V_I(MAX) V_COMP=5V(Note2)
PSRR
12V≤V_CC≤25V
Input Bias Current
I_BIAS
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
0.2 1.0 ^ï¼
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 1
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
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QW-R103-036.C