U3525 Datasheet, PDF (4/9 Pages) Unisonic Technologies – REGULATING PWM IC

U3525
LINEAR INTEGRATED CIRCUIT
ABSOLUATE MAXIUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V_iN
40
V
Collector Supply Voltage
V_C
40
V
Oscillator Charging Current
I_OSC
5
mA
Output Current, Source or Sink
Io
500
mA
Reference Output Current
I_R
50
mA
Current through C_T Terminal
Logic Inputs
Analog Inputs
5
mA
I_T
- 0.3 ~ + 5.5
V
-0.3 ~ Vi
V
Total Power Dissipation at Ta=70 °C
Junction Temperature
Operating Ambient Temperature
Storage Temperature
P_D
1000
mW
T_J
-55 ~ +125
℃
T_ORP
0 ~ +70
℃
T_STG
-65 ~ +150
℃
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.
RECOMMENDED OPERATING CONDITIONS (Note)
PARAMETER
SYMBOL
RATINGS
Input Voltage
V_IN
8 ~ 35
Collector Supply Voltage
V_C
4.5 ~ 35
Sink/Source Load Current (steady state)
I_STEAD
0 ~ 100
Sink/Source Load Current (peak)
I_PEAK
0 ~ 400
Reference Load Current
I_LOAD
0 ~ 20
Oscillator Frequency Range
F_O
100 ~ 400K
Oscillator Timing Resistor
R_O
2 ~ 150
Oscillator Timing Capacitor
C_O
0.001 ~ 0.1
Dead Time Resistor Range
R_T
0 ~ 500
Note: Range over which the device is functional and parameter limits are guaranteed.
UNIT
V
V
mA
mA
mA
Hz
KΩ
µF
Ω
ELECTRICAL CHARACTERISTICS(V_IN= 25V, unless otherwise specified)
PARAMETER
REFERENCE SECTION
Output Voltage
Total Output Variation (Note 1)
Long Term Stability (Note 1)
Line Regulation
Load Regulation
Temp. Stability (Note 1)
Output Noise Voltage (Note 1)
Short Circuit Current
OSCILLATOR SECTION
Clock Amplitude (Note 1, 2)
Sync Threshold
Sync Input Current
Current Mirror
Maximum Frequency
Minimum Frequency
Clock Width (Note 1, 2)
Initial Accuracy (Note 1, 2)
Voltage Stability (Note 1, 2)
Temperature Stability (Note 1)
SYMBOL
TEST CONDITIONS
V_REF TJ= 25℃
Line, Load and Temperature
△V_REF T_J= 125℃, 1000 hrs
△V_REF V_IN= 8 ~ 35 V
△V_REF I_L = 0 ~ 20 mA
△V_REF/△T Over Operating Range
10 Hz ≤ f ≤ 10 kHz, T_J = 25℃
V_REF = 0, T_J = 25℃
f_MAX
f_MIN
△f/△T
Sync Voltage = 3.5 V
I_RT = 2 mA
R_T = 2 KΩ, C_T = 470 pF
R_T = 200KΩ, C_T = 0.1µF
T_J = 25℃
T_J = 25℃
V_IN = 8 ~ 35 V
Over Operating Range
MIN TYP MAX UNIT
5 5.1 5.2 V
4.95
5.25 V
20 50 mV
10 20 mV
20 50 mV
20 50 mV
40 200 µVrms
80 100 mA
3 3.5
V
1.2 2 2.8 V
1 2.5 mA
1.7 2 2.2 mA
400
KHz
120 Hz
0.3 0.5 1 µs
±2 ±6 %
±1 ±2 %
±3 ±6 %
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R103-032,A