ZHCSNA3 October 2021 TPS562212
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Advanced Emulated Current Mode Control
- 7.3.2 Mode Selection and PG/SS Pin Function Configuration
- 7.3.3 Power Good (PG)
- 7.3.4 Soft Start and Pre-Biased Soft Start
- 7.3.5 Output Discharge Through PG/SS Pin
- 7.3.6 Precise Enable and Adjusting Undervoltage Lockout
- 7.3.7 Overcurrent Limit and Undervoltage Protection
- 7.3.8 Overvoltage Protection
- 7.3.9 Thermal Shutdown
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
6.6 Typical Characteristics
VIN = 12 V, TA = 25°C, unless otherwise noted
Figure 6-1 Quiescent
Current (Eco-mode) vs Junction Temperature
Figure 6-3 Shutdown
Current vs Junction Temperature
Figure 6-5 High-Side MOSFET
On-Resistance vs Junction Temperature
Figure 6-7 VIN UVLO
Threshold vs Junction Temperature
Figure 6-9 High-Side Current Limit
Threshold vs Junction TemperatureFigure 6-11 Switching Frequency vs Junction Temperature
Figure 6-13 VOUT = 1.05-V Efficiency, L = 1.0 µH
Figure 6-15 VOUT = 5-V Efficiency, L = 3.3 µH
Figure 6-2 Quiescent
Current (FCCM) vs Junction Temperature
Figure 6-4 Reference
Voltage vs Junction Temperature
Figure 6-6 Low-Side MOSFET
On-Resistance vs Junction TemperatureFigure 6-8 EN
Threshold vs Junction Temperature
Figure 6-10 Low-Side Current Limit
Threshold vs Junction Temperature
Figure 6-12 Switching Frequency vs Output Current, VOUT = 3.3 V, L = 2.2
µH
Figure 6-14 VOUT = 3.3-V Efficiency, L = 2.2 µH
Figure 6-16 VOUT = 7-V Efficiency, L = 3.3 µH