TLD1121EL Datasheet, PDF (3/31 Pages) Infineon Technologies AG – 1 Channel High Side Current Source Basic LED Driver

1 Channel High Side Current Source
Basic LED Driver
TLD1121EL
1
Overview
Features
• 1 Channel device with integrated output stage (current source),
optimized to drive LEDs
• Output current up to 360mA
• Low current consumption in sleep mode
• PWM-operation supported via VS- and EN-pin
• Output current adjustable via external low power resistor and
possibility to connect PTC resistor for LED protection during over
temperature conditions
• Reverse polarity protection
• Overload protection
• Undervoltage detection
• Open load and short circuit to GND diagnosis
• Wide temperature range: -40 °C < T_j < 150 °C
• PG-SSOP14 package with exposed heatslug
• Green Product (RoHS compliant)
• AEC Qualified
PG-SSOP14
Description
The Basic LED Driver TLD1121EL is a one channel high side driver IC with integrated output stage. It is designed
to control LEDs with a current up to 360 mA. In typical automotive applications the device is capable to drive i.e.
3 red LEDs with a current up to 180 mA, which is limited by thermal cooling aspects. The output current is
controlled practically independent of load and supply voltage changes.
Table 1 Product Summary
Operating voltage
Maximum voltage
Nominal output (load) current
Maximum output (load) current
Output current accuracy at R_SET = 12 kΩ
Current consumption in sleep mode
V_S(nom)
V_S(max)
V_OUT(max)
I_OUT(nom)
I_OUT(max)
k_LT
I_S(sleep,typ)
5.5 V… 40 V
40 V
180 mA when using a supply voltage range of 8V
- 18V (e.g. Automotive car battery). Currents up
to I_OUT(max) possible in applications with low
thermal resistance R_thJA
360 mA; depending on thermal resistance R_thJA
2250 ± 7%
0.1 µA
Type
TLD1121EL
Data Sheet
Package
PG-SSOP14
3
Marking
TLD1121EL
Rev. 1.0, 2013-08-08