SLVSH20B October 2023 – May 2024 TPSM86837 , TPSM86838
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Pin Configuration and Functions
- 5 Specifications
-
6 Detailed Description
- 6.1 Overview
- 6.2 Functional Block Diagram
- 6.3
Feature Description
- 6.3.1 The Adaptive On-Time Control and PWM Operation
- 6.3.2 Mode Selection
- 6.3.3 Soft Start and Prebiased Soft Start
- 6.3.4 Enable and Adjusting Undervoltage Lockout
- 6.3.5 Output Overcurrent Limit and Undervoltage Protection
- 6.3.6 Overvoltage Protection
- 6.3.7 UVLO Protection
- 6.3.8 Thermal Shutdown
- 6.3.9 Output Voltage Discharge
- 6.3.10 Power Good
- 6.3.11 Large Duty Operation
- 6.4 Device Functional Modes
- 7 Application and Implementation
- 8 Device and Documentation Support
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
- RCG|19
Thermal pad, mechanical data (Package|Pins)
Orderable Information
5.6 Typical Characteristics
VIN = 12V (unless otherwise noted)
Figure 5-1 TPSM86837 Quiescent Current vs Temperature
Figure 5-3 Shutdown Current vs Temperature
Figure 5-5 VIN UVLO Threshold vs Temperature
Figure 5-7 Low-Side Valley Current Limit vs Temperature
Figure 5-9 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 800kHz, Vo = 1.8V
Figure 5-11 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 800kHz, Vo = 5V
Figure 5-13 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 1200kHz, Vo = 3.3V
Figure 5-15 TPSM86837 Switching Frequency vs Output Current, Fsw = 800kHz, Vin = 24V
Figure 5-17 TPSM86837 Switching Frequency vs Output Current, Fsw = 1200kHz, Vin = 24V
Figure 5-19 TPSM86837 Efficiency, VOUT = 1.8V, Fsw = 800kHz
Figure 5-21 TPSM86837 Efficiency, VOUT = 3.3V, Fsw = 800kHz
Figure 5-23 TPSM86837 Efficiency, VOUT = 5V, Fsw = 800kHz
Figure 5-25 TPSM86837 Efficiency, VOUT = 1.8V, Fsw = 1200kHz
Figure 5-27 TPSM86837 Efficiency, VOUT = 3.3V, Fsw = 1200kHz
Figure 5-29 TPSM86837 Efficiency, VOUT = 5V, Fsw = 1200kHz
Figure 5-2 TPSM86838 Quiescent Current vs Temperature
Figure 5-4 Feedback Voltage vs Temperature
Figure 5-6 EN Threshold vs Temperature
Figure 5-8 High-Side Peak Current Limit vs Temperature
Figure 5-10 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 800kHz, Vo = 3.3V
Figure 5-12 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 1200kHz, Vo = 1.8V
Figure 5-14 TPSM86838 Switching Frequency vs Input Voltage, Fsw = 1200kHz, Vo = 5V
Figure 5-16 TPSM86838 Switching Frequency vs Output Current, Fsw = 800kHz, Vin = 24V
Figure 5-18 TPSM86838 Switching Frequency vs Output Current, Fsw = 1200kHz, Vin = 24V
Figure 5-20 TPSM86838 Efficiency, VOUT = 1.8V, Fsw = 800kHz
Figure 5-22 TPSM86838 Efficiency, VOUT = 3.3V, Fsw = 800kHz
Figure 5-24 TPSM86838 Efficiency, VOUT = 5V, Fsw = 800kHz
Figure 5-26 TPSM86838 Efficiency, VOUT = 1.8V, Fsw = 1200kHz
Figure 5-28 TPSM86838 Efficiency, VOUT = 3.3V, Fsw = 1200kHz
Figure 5-30 TPSM86838 Efficiency, VOUT = 5V, Fsw = 1200kHz