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U3525G-S16-R Datasheet(PDF) 5 Page - Unisonic Technologies

Part # U3525G-S16-R
Description  REGULATING PWM IC
PDF  10 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

U3525G-S16-R Datasheet(HTML) 5 Page - Unisonic Technologies

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U3525
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
5 of 10
www.unisonic.com.tw
QW-R103-032.B
 ELECT RI CAL CHARACT ERIST I CS (V
IN= 25V, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE SECTION
Output Voltage
VREF
TJ= 25°C
5
5.1
5.2
V
Total Output Variation (Note 1)
Line, Load and Temperature
4.95
5.25
V
Long Term Stability (Note 1)
△VREF
TJ= 125°C, 1000 hrs
20
50
mV
Line Regulation
△VREF
VIN= 8 ~ 35 V
10
20
mV
Load Regulation
△VREF
IL = 0 ~ 20 mA
20
50
mV
Temp. Stability (Note 1)
△VREF/△T Over Operating Range
20
50
mV
Output Noise Voltage (Note 1)
10 Hz
≤ f ≤ 10 kHz, TJ = 25°C
40
200
μVrms
Short Circuit Current
VREF = 0, TJ = 25°C
80
100
mA
OSCILLATOR SECTION
Clock Amplitude (Note 1, 2)
3
3.5
V
Sync Threshold
1.2
2
2.8
V
Sync Input Current
Sync Voltage = 3.5 V
1
2.5
mA
Current Mirror
IRT = 2 mA
1.7
2
2.2
mA
Maximum Frequency
fMAX
RT = 2 K
Ω, CT = 470 pF
400
KHz
Minimum Frequency
fMIN
RT = 200K
Ω, CT = 0.1μF
120
Hz
Clock Width (Note 1, 2)
TJ = 25°C
0.3
0.5
1
μs
Initial Accuracy (Note 1, 2)
TJ = 25°C
±2
±6
%
Voltage Stability (Note 1, 2)
VIN = 8 ~ 35 V
±1
±2
%
Temperature Stability (Note 1)
△f /△T
Over Operating Range
±3
±6
%
ERROR AMPLIFIER SECTION (VCM = 5.1 V)
Output Low Level
0.2
0.5
V
Output High Level
3.8
5.6
V
Input Offset Voltage
VOS
2
10
mV
Input Bias Current
Ib
1
10
μA
Input Offset Current
Ios
1
µA
Comm. Mode Reject.
CMR
VCM = 1.5 ~ 5.2 V
60
75
dB
Supply Voltage Rejection
PSR
VIN = 8 ~ 35 V
50
60
dB
DC Open Loop Gain
RL
≥10 MΩ
60
75
dB
DC Transconduct. (Note 1, 3)
30 K
Ω ≤RL≤1 MΩ, TJ = 25°C
1.1
1.5
ms
Gain Bandwidth Product (Note 1)
Gv = 0 dB, TJ = 25°C
1
2
MHz
PWM COMPARATOR
Zero Duty-cycle
0.7
0.9
V
Input Threshold (Note 2)
Maximum Duty-cycle
3.3
3.6
V
Input Bias Current (Note 1)
0.05
1
µA
Minimum Duty-cycle
0
%
Maximum Duty-cycle (Note 2)
45
49
%
SHUTDOWN SECTION
Soft Start Low Level
VSD = 2.5 V
0.4
0.7
V
Shutdown Threshold
To outputs, VSS = 5.1 V, TJ = 25°C
0.6
0.8
1
V
Shutdown Input Current
VSD = 2.5 V
0.4
1
mA
Soft Start Current
VSD = 0 V, VSS = 0 V
25
50
80
µA
Shutdown Delay (Note 1)
VSD = 2.5 V, TJ = 25°C
0.2
0.5
μs



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