TS19370_10 Datasheet, PDF (2/8 Pages) Taiwan Semiconductor Company, Ltd – Boost (Step-up) WLED Driver with OVP

TS19370
Boost (Step-up) WLED Driver with OVP
Absolute Maximum Rating
Parameter
Input Voltage
Supply Voltage (Recommended)
FB Voltage
SW Voltage
CTRL Voltage
Ambient Temperature Range
Junction Temperature Range
Symbol
V_IN
V_IN
V_FB
V_SW
V_CTRL
T_A
T_J
Limit
20
2.5 ~ 18
10
36
10
-40 to +85
-40 to +125
Unit
V
V
V
V
V
o_C
o_C
Electrical Specifications (Ta = 25^oC, V_IN= V_CTRL=3V, C_IN=1uF, C_OUT=0.22uF unless otherwise noted)
Function Parameter
Symbol Test Conditions Min Typ Max Units
Input Voltage Range
Feedback Voltage
V_IN
V_FB
I_SW=100mA, 66%
duty cycle
2.5
--
18
V
86
95
104
mV
FB Pin Bias Current
I_B
10
45
100
nA
Supply Current
I_Q
CTRL = 0V
--
1.9
2.5
mA
--
0.1
1.0
uA
Switching Frequency
F_RSW
0.8
1.2
1.6
MHz
Switch Current Limit
I_CL
--
320
--
mA
Maximum Duty Cycle
D_TMX
85
90
--
%
Switch V_CESAT
V_SAT
At I_SW= 250mA
--
350
--
mV
Switch Leakage Current
I_LKG
V_SW = 5V
--
0.01
5
µA
V_CTRL
V_CTL
High
Low
1.5
--
--
V
--
--
0.4
V
CTRL Pin Bias Current
I_CTL
Ctrl = 2V
--
65
--
µA
Over Voltage Protection
OVP
--
30
--
V
Thermal Resistance
θ_JA
--
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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Version: D08