SLUS859C October 2008 – January 2015 TPS54233
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Simplified Schematic
- 5 Revision History
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2
Feature Description
- 8.2.1 Fixed Frequency PWM Control
- 8.2.2 Voltage Reference (Vref)
- 8.2.3 Bootstrap Voltage (BOOT)
- 8.2.4 Enable and Adjustable Input Under-Voltage Lockout (VIN UVLO)
- 8.2.5 Programmable Slow Start Using SS PIN
- 8.2.6 Error Amplifier
- 8.2.7 Slope Compensation
- 8.2.8 Current Mode Compensation Design
- 8.2.9 Overcurrent Protection and Frequency Shift
- 8.2.10 Overvoltage Transient Protection
- 8.2.11 Thermal Shutdown
- 8.3 Device Functional Modes
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2 Detailed Design Procedure
- 9.2.3 Application Curves
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- D|8
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
6 Pin Configuration and Functions
D Package
Top View
Pin Functions
| PIN | DESCRIPTION | |
|---|---|---|
| NAME | NO. | |
| BOOT | 1 | A 0.1 μF bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor falls below the minimum requirement, the high-side MOSFET is forced to switch off until the capacitor is refreshed. |
| VIN | 2 | Input supply voltage, 3.5 V to 28 V. |
| EN | 3 | Enable pin. Pull below 1.25V to disable. Float to enable. Programming the input undervoltage lockout with two resistors is recommended. |
| SS | 4 | Slow start pin. An external capacitor connected to this pin sets the output rise time. |
| VSENSE | 5 | Inverting node of the gm error amplifier. |
| COMP | 6 | Error amplifier output, and input to the PWM comparator. Connect frequency compensation components to this pin. |
| GND | 7 | Ground. |
| PH | 8 | The source of the internal high-side power MOSFET. |