TS1518 Просмотр технического описания (PDF) - TSC Corporation
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TS1518 Datasheet PDF : 7 Pages
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TS1518
Step-Up DC-DC Converter, White LED Driver
Absolute Maximum Rating
Parameter
Input Voltage
Supply Voltage (Recommended)
FB Voltage
SW Voltage
CTRL Voltage
Ambient Temperature Range
Junction Temperature Range
Symbol
VIN
VIN
VFB
VSW
VCTRL
TA
TJ
Limit
9
2.7 ~ 7
5
32
5
-40 to +85
-40 to +125
Unit
V
V
V
V
V
oC
oC
Electrical Specifications (Ta = 25oC, VIN=3.3V, CIN=1uF, COUT=10uF unless otherwise noted)
Function Parameter
Input Voltage Range
Quiescent Current (Not Switching)
Quiescent Current (Shutdown)
Feedback Voltage
Switch Current Limit
FB Pin Bias Current
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Switch Vcesat
Switch Leakage Current
VCTRL for Full LED Current
Symbol
VIN
IQ
VFB
ICL
ILIM
IB
FRSW
DTMX
DTMN
VSAT
ILKG
VCTL
Test Conditions
VFB = 0.3V
CTRL = 0V
Iout=20mA,Vout=12.5V
Circuit of Figure 1
100% duty cycle
40% duty cycle
VFB=200mV
At Isw = 200mA
Ctrl = 0.3V
Full On
Full Off
Min
2.7
1.2
--
90
200
--
--
900
--
20
--
--
1.7
--
Typ
--
1.5
0.3
100
230
180
--
930
--
--
120
1
--
--
Max
7
1.7
1
110
--
--
1
960
85
25
180
--
--
0.3
Units
V
mA
uA
mV
mA
uA
KHz
%
%
mV
µA
V
V
CTRL Pin Bias Current
Over Voltage Protection
ICTL
OVP
Ctrl = 2V
--
40
--
µA
--
34
--
V
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
2/7
Version: B07
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