Shivaki STV-24LEDGR7, Service Manual

Page: 146 / 175

SY8133
Electrical Characteristics
(V
IN
= 12V, V
OUT
= 2.5V, L = 2.2uH, C
OUT
= 10uF, T
A
= 25°C, I
OUT
= 1A unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Uni
t
Input Voltage Range VIN 4 15 V
Quiescent Current I
Q
I
OUT=0,
VFB=VREF+5% 200 µA
Shutdown Current I
SHDN
EN=0 1 5 µA
Feedback Reference
Voltage VREF 0.588 0.6 0.612 V
FB Input Current IFB VFB=VIN -50 50 nA
Top FET RON RDS(ON)1 0.12
Bottom FET RON RDS(ON)2 0.08
Top FET Current Limit ILIM 4 A
EN rising threshold VENH 1.5 V
EN falling threshold VENL 0.4 V
Input UVLO threshold V
UVLO
3.9 V
UVLO hysteresis V
HYS
0.3 V
Oscillator Frequency F
OSC
IOUT=200mA 0.4 M
Hz
Min ON Time 50 ns
Max Duty Cycle 90 %
Thermal Shutdown
Temperature T
SD
160 °C
Note 1
: Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device.
These are for stress ratings. Functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may remain possibility to affect device reliability.
Note 2 :
θ
JA is measured in the natural convection at TA = 25°C on a low effective single layer thermal
conductivity test board of JEDEC 51-3 thermal measurement standard. Paddle of SO8E packages is the case
position for
θ
JC measurement.
Note 3:
The device is not guaranteed to function outside its operating conditions.
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