ZHCSBE5D August 2013 – June 2025 TPS62090-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 應用
- 3 說明
- 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 Enable and Disable (EN)
- 6.3.2 Soft Start (SS) and Hiccup Current Limit During Start-Up
- 6.3.3 Voltage Tracking (SS)
- 6.3.4 Short-Circuit Protection (Hiccup Mode)
- 6.3.5 Output Discharge Function
- 6.3.6 Power Good Output (PG)
- 6.3.7 Frequency Set Pin (FREQ)
- 6.3.8 Undervoltage Lockout (UVLO)
- 6.3.9 Thermal Shutdown
- 6.3.10 Charge Pump (CP, CN)
- 6.4 Device Functional Modes
- 7 Application and Implementation
- 8 器件和文檔支持
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
4 Pin Configuration and Functions
The exposed
thermal pad is connected to AGND.
Figure 4-1 RGT Package16-Pin QFN With Exposed
Thermal Pad(Top View)Table 4-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| AGND | 6 | — | Analog ground |
| AVIN | 10 | I | Bias supply input voltage pin |
| CN | 8 | I/O | Internal charge-pump flying capacitor. Connect a 10-nF capacitor between CP and CN. |
| CP | 7 | I/O | Internal charge-pump flying capacitor. Connect a 10-nF capacitor between CP and CN. |
| EN | 13 | I | Device enable. To enable the device this pin must be pulled high. Pulling this pin low disables the device. This pin has a pulldown resistor of typically 400 kΩ, which is active when EN is low. |
| Exposed Thermal Pad | — | — | The exposed thermal pad is connected to AGND. This pin must be soldered for mechanical reliability. |
| FB | 5 | I | Feedback pin of the device. For the adjustable version, connect a resistor divider to set the output voltage. |
| FREQ | 3 | I | This pin selects the switching frequency of the device. FREQ = Low sets the typical switching frequency to 2.8 MHz. FREQ = High sets the typical switching frequency to 1.4 MHz. This pin has an active pulldown resistor of typically 400 kΩ and can be left floating for 2.8-MHz operation. |
| PG | 4 | O | Power good open-drain output. This pin is high impedance if the output voltage is within regulation. This pin is pulled low if the output is below the nominal value. The pullup resistor can not be connected to any voltage higher than the input voltage of the device. |
| PGND | 14, 15 | — | Power ground connection |
| PVIN | 11, 12 | I | Power supply input voltage pin |
| SS | 9 | I | Soft-start control pin. A capacitor is connected to this pin and sets the soft-start time. Leaving this pin floating sets the minimum start-up time. |
| SW | 1, 2 | I/O | Switch pin of the power stage |
| VOS | 16 | I | Output voltage sense pin. This pin must be connected to the output voltage. |
(1) I = input, O = output