TS19603
400mA High Voltage Adjustable Current Regulator
With Enable Control
SOP-8EP
Pin Definition:
1. GND
8. OUT
2. GND
7. OUT
3. VDD
6. NC
4. ISET
5. OE
General Description
The TS19603 is a high voltage, low dropout current regulator of maximum output current up to 400mA. The output
current is decided by an external resistor, and the output sink current could be disabled via OE pin. TS19603
internally also build-in thermal protection to prevent the chip over heat damage.
Features
●
●
●
●
●
0.28V V
DROP
@ 400mA
400mA Maximum Output Current
Output Current Controlled by External Resistor
3µs Fast Response Output Stage Enable Control
Wide Supply Voltage Range: 5~50V
Typical Application Circuit
TS19603
Applications
●
●
●
High Power LED Driver
RGB Full Color Power LED Driver
LCD Monitor/TV LED Backlight Driver
Ordering Information
Part No.
TS19603CS RLG
Package
SOP-8EP
Packing
2.5Kpcs / 13” Reel
Note:
“G” denotes Halogen Free Product.
Absolute Maximum Rating
Parameter
Input Voltage
Output Sink Current
Output Enable Voltage
Operating Junction Temperature Range
Storage Temperature Range
Thermal Resistance Junction to Air
Power Dissipation P
D
@ T
A
=25°C (Note 2)
Thermal Resistance - Junction to Ambient
Thermal Resistance - Junction to Case
ESD Rating (Human Body Model) (Note 4)
Symbol
V
IN
I
OUT
V
EN
T
OPR
T
STG
θ
JA
P
D
θ
JA
θ
JC
ESD
Value
55
450
13.2
-40 ~ +150
-65 ~ +150
80
1
36
5.5
2
Unit
V
mA
V
ºC
ºC
ºC/W
W
ºC/W
ºC/W
kV
Recommend Operating Conditions
Parameter
Input Voltage
Output Enable Voltage
Output Sink Current
Operating Junction Temperature Range
Operating Free-Air Temperature Range
Symbol
V
IN
V
EN
I
OUT
T
OPR
T
A
Min
5
0
200
-20
-20
Typ
--
--
--
--
--
Max
50
12
400
+125
+85
Unit
V
V
mA
ºC
ºC
1/6
Version: A13
TS19603
400mA High Voltage Adjustable Current Regulator
With Enable Control
Electrical Specification
(V
IN
=24V,
T
A
=25
o
C, unless otherwise specified.)
Parameter
Output Current
Output Current Deviation
SET Current Range
Minimum Output Current
Maximum Output Current
Output Dropout Voltage
Load Regulation
Line Regulation
Enable Low Input Voltage
Enable High Input Voltage
Enable Low Input Current
Enable High Input Current
Output Enable Delay Time
Output Disable Delay Time
Supply Current Consumption
Note 1:
Output Dropout Voltage: Duty 90% x I
OUT
@ V
OUT
=0.5V
Note 2:
Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device.
These are for stress ratings. Functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may remain possibility to affect device reliability.
Note 3:
Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test
board in free air at TA=25°C.
Note 4:
2 square inch of FR-4, double sided, 1 oz. minimum copper weight.
Note 5:
Devices are ESD sensitive. Handling precaution recommended.
EN from low to high. V
OUT
=0.5V,
I
OUT
=350mA, Duty 50%
EN from high to low. V
OUT
=0.5V,
I
OUT
=350mA, Duty 50%
Should lower than VIN
I
SET
=200µA
I
SET
=900µA
I
SET
=800µA (Note 1)
V
OUT
=0.5V to 3V, I
OUT
=200mA
V
OUT
=0.5V, I
OUT
=350mA, V
IN
=5~50V
Conditions
V
OUT
=0.5V, R
SET
=3kΩ
V
OUT
=0.5V, R
SET
=1.5kΩ
V
OUT
=0.5V, I
OUT
=200mA~400mA
Min
--
--
--
200
--
--
--
--
--
0
2
-20
-5
--
--
--
Typ
200
400
--
--
100
450
0.28
--
0.08
--
--
--
--
3
3
--
Max
--
--
±5
900
--
--
--
3
0.15
0.8
12
+20
+5
--
--
5
Unit
mA
%
µA
mA
mA
V
mA/V
%/V
V
V
µA
µA
µS
µS
mA
Pin Function Description
Pin Name
VIN
OUT
GND
OE
ISET
Power Supply Pin
Output pin. Sink current is decided by the current on R
SET
connected to I
SET
pin.
I
SET
=1.2V x 500/R
CS
Ground Pin
Output Stage Enable Control pin. High enable the output pin. It can be left floating for normally
on.
Output Current Setting pin. Connect a resistor from ISET to GND to set the LED bias current
I
SET
=0.002 x I
OUT
=1.2V/R
CS
Pin Function
2/6
Version: A13
TS19603
400mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information
TS19603 is a high voltage, low dropout current regulator for maximum output current up to 400mA with OE pin
control. The current could be linearly adjusted through variable resister connected to ISET pin, or by PWM control
via OE pin. Although the absolute maximum rating of OUT pin 75V, the dropout voltage between OUT pin and
GND pin should not be too large when current is sinking because of the thermal dissipation capability of the
package.
Here are some of the typical application examples:
DC Voltage Input
Any DC voltage level between 5V to 50V could be adopted as power source VDD for typical application of
TS19603 as long as VDD is larger than the total forward voltage drop of the LED string (at expecting current) by
0.35V. If 50V ~ 60V voltage level is adopted as power source to positive end of the LED string, one Zener shunt
regulator could be used to provide appropriate voltage to VDD pin.
TS19603
TS19603
3/6
Version: A13
TS19603
400mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information (Continue)
LED Backlight Solution
TS19603 could coordinate with any type of DC-to-DC converter through feedback path to realized LED backlight
module. The number of LEDs in the string is variable even with certain fixed power source since the output voltage
of the DC-to-DC converter could be modulated according to feedback signal.
TS19603
AC Voltage Input
TS19603 could work with any kind of well-known or well-developed switch-mode power supply system. Simply cut
off the internal feedback path of the power supply system and then feed the signal from TS19603 back to the
power supply system instead.
TS19603
4/6
Version: A13
TS19603
400mA High Voltage Adjustable Current Regulator
With Enable Control
SOP-8EP Mechanical Drawing
DIM
A
B
C
D
E
E1
F
G
K
M
P
R
SOP-8EP DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX.
4.80
5.00
0.189
0.196
3.80
4.00
0.150
0.157
1.35
1.75
0.054
0.068
0.35
0.49
0.014
0.019
2.05
2.41
0.081
0.095
2.82
3.30
0.111
0.130
0.40
1.25
0.016
0.049
1.27BSC
0.05BSC
0.10
0.25
0.004
0.009
0º
7º
0º
7º
5.80
6.20
0.229
0.244
0.25
0.50
0.010
0.019
Marking Diagram
Y
= Year Code
M
= Month Code for Halogen Free Product
(O=Jan,
P=Feb, Q=Mar, R=Apl, S=May, T=Jun, U=Jul, V=Aug, W=Sep,
X=Oct, Y=Nov, Z=Dec)
L
= Lot Code
5/6
Version: A13
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