Shivaki STV-24LEDGR7, Service Manual

Page: 137 / 175

SY8009A/SY8009B
Electrical Characteristics
(V
IN
= 5V, V
OUT
= 2.5V, L = 2.2uH, C
OUT
= 10uF, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input Voltage Range VIN 3 5.5 V
Quiescent Current I
Q
I
OUT=
0
,
VFB=VREF
⋅
105% 80 µA
Shutdown Current I
SHDN
EN=0 0.1 1 µA
Feedback Reference
Voltage VREF 0.588 0.6 0.612 V
FB Input Current IFB VFB=VIN -50 50 nA
SY8009A 0.2 PFET RON RDS(ON),P
SY8009B 0.15
SY8009A 0.15 NFET RON RDS(ON),N
SY8009B 0.12
SY8009A 1.8 A PFET Current Limit I
LIM
SY8009B 2.5 A
EN rising threshold VENH 1.5 V
EN falling threshold VENL 0.4 V
Input UVLO threshold V
UVLO
1.8 V
UVLO hysteresis V
HYS
0.1 V
I
OUT
=200mA, SY8009A 1.5 MHz Oscillator Frequency F
OSC
I
OUT
=500mA, SY8009B 1 MHz
Min ON Time 50 ns
Max Duty Cycle 100 %
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. Pin 2 of SOT23-5/SSOT-23-5 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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