TLD5097EL_15 Datasheet, PDF (3/41 Pages) Infineon Technologies AG – Multitopology LITIX Power DC/DC Controller IC

TLD5097EL
Infineon® LITIX™ Power
1
Overview
• Wide Input Voltage Range from 4.5 V to 45 V
• Constant Current or Constant Voltage Regulation
• Drives LEDs in Boost, Buck, Buck-Boost, SEPIC and Flyback
Topology
• Very Low Shutdown Current: Iq_OFF < 10 µA
• Flexible Switching Frequency Range, 100 kHz to 500 kHz
• Synchronization with external clock source
• PWM Dimming
PG-SSOP-14
• Analog Dimming feature to adjust average LED current
• Internal 5 V Low Drop Out Voltage Regulator
• Open Circuit Detection
• Output Overvoltage Protection
• Internal Soft Start
• Over Temperature Shutdown
• Wide LED current range via simple adaptation of external components
• 300mV High Side Current Sense to ensure highest flexibility and LED current accuracy
• Available in a small thermally enhanced PG-SSOP-14 package
• Automotive AEC Qualified
• Green Product (RoHS) Compliant
Description
The TLD5097EL is a LED boost controller with built in protection features. The main function of this device is to regulate
a constant LED current. The constant current regulation is especially beneficial for LED color accuracy and longer lifetime.
The controller concept of the TLD5097EL allows multiple configurations such as Boost, Buck, Buck-Boost, SEPIC and
Flyback by simply adjusting the external components. The TLD5097EL offers the most flexible dimming options. Dimming
can be achieved with analog or PWM input.The switching frequency is adjustable in the range of 100 kHz to 500 kHz and
can be synchronized to an external clock source. The TLD5097EL features an enable function reducing the shut-down
current consumption to I_{q_OFF} < 10 µA. The current mode regulation scheme of this device provides a stable regulation
loop maintained by small external compensation components. The integrated soft start feature limits the current peak as
well as voltage overshoot at start-up. This IC is suited for use in the harsh automotive environments and provides output
overvoltage protection and device overtemperature shutdown.
Application
• Automotive Exterior and Interior Lighting
Type
TLD5097EL
Data Sheet
Package
PG-SSOP-14
3
Marking
TLD5097
Revision 1.0, 2015-03-12