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TS1937CX5RF Arkusz danych(PDF) 2 Page - Taiwan Semiconductor Company, Ltd

Numer części TS1937CX5RF
Szczegółowy opis  Boost (Step-up) WLED Driver
Download  8 Pages
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Producent  TSC [Taiwan Semiconductor Company, Ltd]
Strona internetowa  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS1937CX5RF Arkusz danych(HTML) 2 Page - Taiwan Semiconductor Company, Ltd

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TS1937
Boost (Step-up) WLED Driver
2/8
Version: C07
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
Input Voltage
VIN
20
V
Supply Voltage (Recommended)
VIN
2.5 ~ 18
V
FB Voltage
VFB
10
V
SW Voltage
VSW
36
V
CTRL Voltage
VCTRL
10
V
Ambient Temperature Range
TA
-40 to +85
oC
Junction Temperature Range
TJ
-40 to +125
oC
Electrical Specifications (Ta = 25oC, VIN= VCTRL=3V, CIN=1uF, COUT=0.22uF unless otherwise noted)
Function Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Input Voltage Range
VIN
2.5
--
18
V
Feedback Voltage
VFB
Isw=100mA, 66% duty cycle
86
95
104
mV
FB Pin Bias Current
IB
10
45
100
nA
--
1.9
2.5
mA
Supply Current
IQ
CTRL = 0V
--
0.1
1.0
uA
Switching Frequency
FRSW
0.8
1.2
1.6
MHz
Switch Current Limit
ICL
--
320
--
mA
Maximum Duty Cycle
DTMX
85
90
--
%
Switch Vcesat
VSAT
At Isw = 250mA
--
350
--
mV
Switch Leakage Current
ILKG
Vsw = 5V
--
0.01
5
µA
High
1.5
--
--
V
Voltage Enable Control
VCTRL
Low
--
--
0.4
V
CTRL Pin Bias Current
ICTRL
Ctrl = 2V
--
65
--
µA
Thermal Resistance
θJA
--
220
--
°C/W
Note:
Absolute maximum ratings are limits beyond which damage to the device may occur.
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


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