TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
TO-252-5L
(PPAK)
Pin Definition:
1. VIN
2. ISET
3. GND
4. EN
5. OUT
General Description
The TS19601 is a high voltage, low dropout current regulator of maximum output current up to 700mA. The output
current is decided by an external resistor, and the output sink current could be disabled via OE pin. TS19601 has
internally also build-in thermal protection to prevent the chip over heat damage.
Features
●
●
●
●
●
●
0.5V V
DROP
@ 700mA
700mA Maximum Output Current
Output Current Controlled by External Resistor
3µs Fast Response Output Stage Enable Control
Output Sustaining Voltage up to 75V
Wide Supply Voltage Range: 5~50V
Typical Application Circuit
Applications
●
●
●
●
High Power LED Driver
RGB Full Color Power LED Driver
LCD Monitor/TV LED Backlight Driver
LED Table Lamp
Ordering Information
Part No.
Package
Packing
TS19601CP5 RO
TO-252-5L 2.5kpcs / 13” Reel
TS19601CP5 ROG
TO-252-5L 2.5kpcs / 13” Reel
Note:
“G” denotes for Halogen- and Antimony-free as those which
contain <900ppm bromine, <900ppm chlorine (<1500ppm total
Br + Cl) and <1000ppm antimony compounds
Absolute Maximum Rating
Parameter
Input Voltage
Output Sustaining Voltage
Output Sink Current
Output Enable Voltage
Operating Junction Temperature Range
Storage Temperature Range
Symbol
V
IN
V
DSN
I
OUT
V
EN
T
OPR
T
STG
Value
55
75
700
13.2
+150
-55 ~ +150
Unit
V
V
mA
V
ºC
ºC
Thermal Information
(Note 1)
Parameter
Thermal Resistance Junction to Air
Symbol
R
θJA
Range
80
Unit
ºC/W
1/8
Version: C14
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Recommend Operating Conditions
Parameter
Input Voltage
Output Enable Voltage
Output Sink Current
Operating Free-Air Temperature Range
Symbol
V
IN
V
EN
T
OPR
T
STG
Min
5
--
100
-40
Typ
--
--
--
--
Max
50
12
700
+85
Unit
V
V
mA
ºC
Electrical Specification
(V
IN
=
24V
,
T
C
=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.
Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test
board in free air at T
A
=25°C.
2.
Output Dropout Voltage: Duty 90% x I
OUT
@V
OUT
=0.5V.
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
=1400µA
I
SET
=1000µA
(Note 2)
Conditions
V
OUT
=0.5V, R
SET
=3kΩ
V
OUT
=0.5V, R
SET
=1.71kΩ
V
OUT
=0.5V, R
SET
=1kΩ
V
OUT
=0.5V, I
OUT
=350mA~600mA
Min
--
--
--
--
200
--
--
--
--
--
0
2
-20
-5
--
--
--
Typ
200
350
600
--
--
100
700
0.35
--
0.08
--
--
--
--
3
3
--
Max
--
--
--
±5
1400
--
--
--
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
V
OUT
=0.5V to 3V, I
OUT
=350mA
V
OUT
=0.5V, I
OUT
=350mA, V
IN
=5~50V
Pin Function Description
Pin Number
1
2
3
4
5
Pin Name
VIN
ISET
GND
EN
OUT
Power Supply Pin
Output Current Setting pin. Connect a resistor from ISET to GND to set the
LED bias current. I
SET
=1.2V/R
SET
Ground Pin
Output Stage Enable Control pin. High enable the output pin. It can be left
floating for normally on.
Output pin. Sink current is decided by the current on R
SET
connected to I
SET
pin. I
OUT
=500 x I
SET
=500 x 1.2V/R
SET
Pin Function
2/8
Version: C14
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Electrical Characteristics Curve
Figure 1. Supply Current vs. Supply Voltage
Figure 2. ISET Voltage vs. Junction Temperature
Figure 3. Output Current vs. Supply Voltage
Figure 4. Output Current vs. Dropout Voltage
3/8
Version: C14
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information
TS19601 is a high voltage, low dropout current regulator for maximum output current up to 700mA 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
TS19601 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.
4/8
Version: C14
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information (Continue)
LED Backlight Solution
TS19601 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.
AC Voltage Input
TS19601 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 TS19601 back to the
power supply system instead.
5/8
Version: C14
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