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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 1.8A SC70-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：1.8A (Switch)
- Frequency：1.2MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SC-70-5
- Grade：-
- Qualification：-
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Overview
The TPS61169DCKR is a high-efficiency boost converter designed for driving white LED strings. It features an integrated 40V rated switch FET capable of handling up to 1.8A switching current. The device operates with an input voltage range of 2.7V to 5.5V and supports a switching frequency of 1.2MHz. It provides a maximum output voltage of 39V and delivers up to 400mA per channel. The component utilizes PWM dimming control and is housed in a SC-70-5 package, suitable for applications requiring compact power management solutions.
Feature Summary
- Integrates a 40V rated switch FET for driving series LED configurations
- Supports PWM dimming control for brightness adjustment
- Operates within a wide input voltage range from 2.7V to 5.5V
Applications
- White LED backlighting
- Series LED string drivers
- Portable electronic display illumination
Procurement Notes
Verify the specific suffix 'DCKR' corresponds to the SC-70-5 package and tape-and-reel quantity when ordering. Confirm that the 1.8A peak current rating aligns with the thermal constraints of the target PCB layout. Ensure the design accounts for the 1.2MHz switching frequency to manage electromagnetic interference appropriately.
Selection Notes
Select this component when a compact solution is required for driving multiple LEDs in series from a single-cell lithium battery or similar low-voltage source. The integrated FET eliminates external switch requirements, reducing board space. Consider the 40V output limit when determining the maximum number of LEDs in the series chain.
Part Context
This part belongs to the TPS61169 family of high-current boost converters. The DCKR suffix specifically denotes the SC-70-5 surface-mount package variant. Texas Instruments designs this series to provide efficient power conversion for portable devices requiring reliable LED illumination with minimal external component count.
Replacement Considerations
Check for direct pin-compatible upgrades within the TPS6116x family. Verify if alternative packages such as SOT-23-5 are available if footprint changes are permissible. Cross-reference electrical specifications like switching frequency and output voltage limits before substitution.
