TS19378 Datasheet, PDF (2/7 Pages) Taiwan Semiconductor Company, Ltd – 2A Buck (Step-down) WLED Driver

TS19378
2A Buck (Step-down) WLED Driver
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
V_CC Pin Voltage
Feedback Pin Voltage
EN/SS Pin Voltage
OVP Pin Voltage
COMP Pin Voltage
VGATE Pin Voltage
Switch Pin Voltage
Power Dissipation
V_CC
V_FB
V_EN/SS
V_OVP
V_COMP
V_GATE
V_SW
PD
V_SS - 0.3 to V_SS + 45
V
V_SS - 0.3 to 6
V
V_SS - 0.3 to 6
V
V_SS - 0.3 to V_CC
V
V_SS - 0.3 to 6
V
V_SS - 0.3 to V_CC
V
V_SS - 0.3 to V_CC + 0.3
V
Internally limited
mW
Storage Temperature Range
T_ST
-65 to +150
°C
Operating Junction Temperature Range
T_OJP
-40 to +125
°C
Operating Supply Voltage
V_OP
8 to 40
V
Output Voltage
V_OUT
38
V
Thermal Resistance from Junction to case
θ_JC
15
°C/W
Thermal Resistance from Junction to ambient
θ_JA
40
°C/W
Note: θ_JA is measured with the PCB copper area(need connect to Exposed Pad) of approximately 1.5 in²(Multi-layer).
Electrical Specifications (V_IN=12V, T_A =25^oC, unless otherwise noted)
Parameter
Symbol
Conditions
Min Typ Max Units
Feedback Voltage
Quiescent Current
Feedback Bias Current
Shutdown Supply Current
Switch Current Limit
Oscillation Frequency
Short Frequency
EN/SS Pin Shutdown Logic input
threshold voltage
V_FB
I_CCQ
I_FB
I_SD
I_SWLIMIT
F_OSC
F_OSC
V_SL
I_OUT=0.2A
V_FB=0.5V force driver off
I_OUT=0.1A
V_EN =0V
Low (regulator OFF)
0.19 0.20 0.21 V
--
3
6
mA
--
0.1 0.5 uA
-- 150 300 uA
2.5
--
--
A
240 300 360 KHz
--
50
-- KHz
--
--
0.8
V
EN/SS Pin Input Current
Internal MOSFET R_DSON
OVP Sense Voltage
Thermal shutdown Temp
Thermal shutdown Hysteresis
I_EN/SS
R_DSON
V_OVP
T_SD
T_SH
V_EN=0V
V_CC=5V, V_FB=0V
--
5
--
uA
-- 130 180 mΩ
0.833 0.850 0.867 V
-- 150 --
°C
--
40
--
°C
2/7
Version: A13