TPS65321-Q1 - 具有 Eco-mode? 和 LDO 稳压器的 TPS65321-Q1 40V 降压转换器

TPS65321-Q1是TI德州仪器公司的一款无产品，TPS65321-Q1是具有 Eco-mode? 和 LDO 稳压器的 TPS65321-Q1 40V 降压转换器，本站介绍了TPS65321-Q1的封装应用图解、特点和优点、功能等，并给出了与TPS65321-Q1相关的TI元器件型号供参考。

TPS65321-Q1 - 具有 Eco-mode? 和 LDO 稳压器的 TPS65321-Q1 40V 降压转换器 - 无 - 电源管理多通道IC(PMIC)解决方案 - 德州仪器

产品特性

Qualified for Automotive Applications
AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
One High-VIN Step-Down DC-DC Converter
- Input Range of 3.6-V to 36-V
- 250-mΩ High-Side MOSFET
- Maximum Load Current 3.2-A, Output Adjustable 1.1-V to 20-V
- Adjustable Switch-Mode Frequency 100-kHz to 2.5-MHz
- Synchronizes to External Clock
- Maximum 140-μA Operating Quiescent Current
  - High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control Scheme
- Reset Output-Pin (Active Low, Open-Drain)
One High-VIN Low-Dropout (LDO) Voltage Regulator
- Input Range of 3-V to 36-V
- 280-mA Current Capability With Typical 35-µA Operating Quiescent Current in No-Load Condition
- Low-Dropout Voltage of 300-mV at IO = 200-mA (Typical)
Overcurrent Protection for Both Regulators
Overtemperature Protection
14-Pin HTSSOP Package With PowerPAD™ Integrated Circuit Package

产品应用

Automotive Infotainment and Cluster
Advanced Driver Assistance System (ADAS)
Automotive Telematics, eCall
12-V and 24-V Industrial and Commercial Low Power System

产品说明

The TPS65321-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6-V to 36-V for the buck regulator, and 3-V to 36-V for the LDO regulator. The buck regulator has an integrated high-side MOSFET and an active-low, open-drain power-good output-pin (nRST). The LDO regulator also has an integrated MOSFET and features a low-input supply current of 35-μA typical in no-load condition. The low-voltage tracking feature enables the TPS65321-Q1 device to track the input supply during cold-crank conditions.

The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input-supply current to maximum 140-μA.

The device has built-in protection features such as soft start, current-limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS65321-Q1	HTSSOP (14)	5.00 mm × 4.40 mm

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