The TPS65320D-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. The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET with an active-low, push-pull reset output pin. The input supply of the LDO regulator auto-source from the output of the buck regulator when it is in operation. Low-voltage tracking feature enables TPS65320D-Q1 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 due to 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.

• 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 Switching Frequency 100 kHz to 2.5 MHz
  • Synchronizes to External Clock
  • High Efficiency at Light Loads With Pulse-Skipping Eco-mode? Control Scheme
  • Maximum 140-μA Operating Quiescent Current
• One Low-Dropout Voltage (LDO) Regulator
  • Input Range of 3 V to 20 V, With Auto-Source to Balance Efficiency and Lower Standby Current
  • 280-mA Current Capability With Typical 35-μA Quiescent Current in No-Load Condition
  • Power-Good Output (Push-Pull)
  • 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

• Regulated outputs (#)
• 2
• Vin (Min) (V)
• 3.6
• Vin (Max) (V)
• 36
• Iout (Max) (A)
• 3.2
• Rating
• Automotive
• LDO
• 1
• Iq (Typ) (mA)
• 0.155
• Features
• Eco-mode, Enable, Over Current Protection, Power Good, Thermal Shutdown, UVLO Fixed
• Processor name
• Generic
• Processor supplier
• Generic
• Shutdown current (ISD) (Typ) (uA)
• 2
• Configurability
• Hardware configurable

TPS65320D-Q1的完整型号有：TPS65320DQPWPRQ1，以下是这些产品的关键参数及官网采购报价：

TPS65320DQPWPRQ1，工作温度：-40 to 125，封装：HTSSOP (PWP)-14，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPS65320DQPWPRQ1的批量USD价格：.75（1000+）

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