ZHCSQ77B February 2023 – June 2024 TPS25948
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 说明
- 4 Device Comparison Table
- 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 Undervoltage Lockout (UVLO and UVP)
- 7.3.2 Overvoltage Lockout (OVLO)
- 7.3.3 Inrush Current, Overcurrent, and Short Circuit Protection
- 7.3.4 Analog Load Current Monitor
- 7.3.5 Reverse Current Protection
- 7.3.6 Overtemperature Protection (OTP)
- 7.3.7 Fault Response and Indication (FLT)
- 7.3.8 Supply Good Indication (SPLYGD/SPLYGD)
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Device and Documentation Support
- 10Revision History
- 11Mechanical, Packaging, and Orderable Information
5 Pin Configuration and Functions
Figure 5-1 YWP Package, 12-Ball PWCSP (Top View)Table 5-1 Pin Functions
| PIN | TYPE | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| EN/UVLO | 1 | Analog input | Active high enable for the device. A resistor divider on this pin from input supply to GND can be used to adjust the undervoltage lockout threshold. Do not leave floating. Refer to Section 7.3.1 for details. |
OVLO | 2 | Analog input | A resistor divider on this pin from supply to GND can be used to adjust the overvoltage lockout threshold. This pin can also be used as an Aactive low enable for the device. Do not leave floating. Refer to Section 7.3.2 for details. |
SPLYGD | 3 | Digital output | TPS259480x/2x: Active high Supply Good indication. This is an open drain signal which is asserted high when the input supply is valid and channel has completed inrush sequence. This can be used to enable/disable the auxiliary supply eFuse to facilitate smooth switchover in a priority power MUXing configuration. Refer to Section 7.3.8 for more details. |
SPLYGD | Digital output | TPS259481x: Active low Supply Good indication. This is an open drain signal which is asserted Low when the input supply is valid and channel has completed inrush sequence. This can be used to enable/disable the auxiliary supply eFuse to facilitate smooth switchover in a priority power MUXing configuration. Refer to Section 7.3.8 for more details. | |
FLT | 4 | Digital output | TPS259480x: Active low fault event indicator. This is an open drain signal which will be pulled low when a fault is detected. Refer to Section 7.3.7 for more details. |
RCBCTRL | Digital input | TPS259481x/2x: Active high reverse current blocking enable input. Leave the pin floating or pull it high to enable reverse current blocking at all times. Pull the pin low to disable reverse current blocking in steady-state to enable bi-directional current flow. | |
IN | 5, 12 | Power | Power input. |
OUT | 6, 11 | Power | Power output. |
DVDT | 7 | Analog output | A capacitor from this pin to GND sets the output turn on slew rate. Leave this pin floating for the fastest turn on slew rate. Refer to Section 7.3.3.1 for details. |
GND | 8 | Ground | This is the ground reference for all internal circuits and must be connected to system GND. |
ILM | 9 | Analog output | This is a dual function pin used to limit and monitor the output current. An external resistor from this pin to GND sets the output current limit threshold during start-up as well as steady state. The pin voltage can also be used as analog output load current monitor signal. Do not leave floating. Refer to Section 7.3.3.2 for more details. |
ITIMER | 10 | Analog output | A capacitor from this pin to GND sets the overcurrent blanking interval during which the output current can temporarily exceed set current limit (but lower than fast-trip threshold) before the device overcurrent response takes action. Leave this pin open for fastest response to overcurrent events. Refer to Section 7.3.3.2 for more details. |