SLVSC26B
November 2013 – May 2024
TPS61162A
,
TPS61163A
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
Pin Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
EasyScale Timing Requirements
5.7
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Boost Converter
6.3.2
IFBx Pin Unused
6.3.3
Enable and Start-up
6.3.4
Soft Start
6.3.5
Full-Scale Current Program
6.3.6
Brightness Control
6.3.7
Undervoltage Lockout
6.3.8
Overvoltage Protection
6.3.9
Overcurrent Protection
6.3.10
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
One-Wire Digital Interface (EasyScale Interface)
6.4.2
PWM Control Interface
6.5
Programming
6.5.1
EasyScale Programming
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Inductor Selection
7.2.2.2
Schottky Diode Selection
7.2.2.3
Compensation Capacitor Selection
7.2.2.4
Output Capacitor Selection
7.2.3
Application Curves
7.2.4
Additional Application Circuits
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.2
Related Links
8.3
Community Resources
8.4
Trademarks
9
Revision History
10
Mechanical, Packaging, and Orderable Information
1
Features
2.7V to 6.5V input voltage
Integrated 1.5A/40V MOSFET
1.2MHz switching frequency
Dual current sinks of up to 30mA current each
1% typical current matching and accuracy
Optional 26.5V/37.5V OVP threshold
TPS61162A: 26.5V OVP
TPS61163A: 37.5V OVP
Adaptive boost output to WLED voltages
Very low voltage headroom control (90mV)
Flexible digital and PWM brightness control
One-Wire control interface (
EasyScale™
)
PWM dimming control interface
Up to 100:1 PWM dimming ratio
Up to 9-bit dimming resolution
Up to 90% efficiency
Built-in soft start
PFM mode at light load
Overvoltage protection
Built-in WLED open/short protection
Thermal shutdown
Supports 4.7µH inductor application