TS19371 Ver la hoja de datos (PDF) - TSC Corporation
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TS19371 Datasheet PDF : 10 Pages
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TS19371
Boost (Step-up) WLED Driver with OVP
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
Input Voltage
Supply Voltage (Recommended)
FB Voltage
SW Voltage
CTRL Voltage
Ambient Temperature Range
Junction Temperature Range
VIN
VIN
VFB
VSW
VCTRL
TA
TJ
20
V
2.5 ~ 18
V
10
V
36
V
10
V
-40 to +85
oC
-40 to +125
oC
Electrical Specifications (Ta = 25oC, VIN= VCTRL=3V, CIN=1uF, COUT=0.22uF unless otherwise noted)
Parameter
Symbol
Test Conditions
Min Typ Max Units
Input Voltage Range
Feedback Voltage
FB Pin Bias Current
Supply Current
VIN
VFB
ISW=180mA, Vin=5V
IB
IQ
CTRL = 0V
2.5
--
18
V
80
95
110
mV
10
45
100
nA
--
2.1
3.0
mA
--
0.1
1.0
uA
Switching Frequency
Switch Current Limit
Maximum Duty Cycle
Switch VCESAT
Switch Leakage Current
Voltage Enable Control
FRSW
ICL
DTMX
VSAT
ILKG
VCTL
At ISW = 250mA
VSW = 5V
High
Low
0.8
1.2
1.6
MHz
--
650
--
mA
85
90
--
%
--
350
--
mV
--
0.01
5
µA
1.5
--
--
V
--
--
0.4
V
CTRL Pin Bias Current
Over Voltage Protection
ICTL
OVP
Ctrl = 2V
--
65
--
µA
--
30
--
V
Thermal Resistance -
Junction to Ambient
RӨJA
SOT-26
SOP-8 (Note 1)
--
220
--
°C/W
--
70
--
Note 1: Surface mounted on 1” x 1” FR4 board
Note 2: Absolute maximum ratings are limits beyond which damage to the device may occur.
Note 3: The maximum allowable power dissipation is a function of maximum function temperature, TJ(max), the
junction to ambient thermal resistance, θJA, and the ambient temperature. The maximum allowable, power
dissipation at any ambient temperature is calculated using: PD(MAX)= [TJ(max)-TA]/θJA . Exceeding the maximum
allowable power dissipation will cause excessive die temperature. All limits at temperature extremes are
guaranteed via correlation using standard statistical methods
2/10
Version: G08
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