T8302 Ver la hoja de datos (PDF) - Taiwan Memory Technology
Número de pieza
componentes Descripción
Fabricante
T8302 Datasheet PDF : 12 Pages
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tm TE
CH
Absolute Maximum Ratings
Parameter
Voltage on intput pin relative to GND
ISENSE pin Voltage ( respect to VIN)
ADJ and EN pin Voltage
Operating Temperature Rang
Maximum Soldering Temperature (at leads, 10 sec)
Storage Temperature Rang
Power Dissipation, PD @ TA = 25°C
Package Thermal Resistance, θJA
T8302
Symbol
VIN
TA
TLEAD
TS
SOT-89
SOP-8
SOT-89
SOP-8
Value
-0.3 to +60
-5 to +0.3
-0.3 to +6
-40 to +125
300
-65 to +150
0.5
0.8
200
178
Unit
V
V
V
°C
°C
°C
W
°C/W
Electrical Characteristics (TA = -40 to 85°C unless otherwise noted. Typical values are at TA =25°C, VDD =24V)
Symbol
Description
Conditions
Min. Typ. Max Unit
VIN Input Voltage
6 - 60 V
VIRU Internal regulator start-up threshold VIN rising
4.95
V
VIRD Internal regulator shutdown
VIN falling
4.30
V
IQOFF
Quiescent supply current
with output off
EN pin grounded
70
uA
IQON
Quiescent supply current
with output switching
ADJ pin floating
f = 250kHz
1.8 5.0 mA
VSENSE
Mean current sense threshold Voltage Measured on ISENSE pin with respect to
(Defines LED current setting accuracy) VIN, VADJ = 1.25V
95 100 105
mV
VSENTH Sense threshold hysteresis
±15
%
ISENSE ISENSE pin input current
VSENSE =VIN – 0.1
10
uA
VREF Internal reference voltage
Measured on ADJ pin with pin floating
1.25
V
∆VREF/∆T Temperature coefficient of VREF
50
ppm/°C
VADJ
External control voltage range on
ADJ pin for DC brightness control*
0.1
2.5 V
VIHEN EN Input Voltage Hight
2
V
VILEN EN Input Voltage Low
RADJ Resistance between ADJ pin and VREF 0< VADJ < 2.5V
0.8 V
64
Kohm
TADJ
ILXM
RLX
ILXI
Soft-start delay time
Continuous LX switch current
LX Switch ‘On’ resistance
LX switch leakage current
ADJ floating
@ ILX = 1A
1
ms
1
A
0.3 0.45 ohm
5 uA
TTP Thermal Shutdown Protect
160
°C
TM Technology, Inc. reserves the right
P. 3
to change products or specifications without notice.
Publication Date:April 2014
Revision: E
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