The TPS54262-Q1 device is a 60-V, 2-A step-down switch-mode power supply with a low-power mode and a programmable voltage supervisor with an integrated NMOS switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features low-power mode operation under light-load conditions which reduces the supply current to 50 µA (typical). By pulling the EN pin low, the supply shutdown current is reduced to 1 µA (typical).

An open-drain reset signal indicates when the nominal output drops below the reset threshold set by an external resistor divider network. The output voltage start-up ramp is controlled by a soft-start capacitor. There is an internal undervoltage shut down which is activated when the input supply ramps down to 2.6 V. The device features a short circuit protection circuit which protects the device during overload condition, and also has a thermal shutdown protection.

• Asynchronous Switch Mode Regulator
• Qualified for Automotive Applications
• 3.6-V to 48-V Operating Range, Withstands Transients up to 60 V
• 2-A Maximum Load Current
• 50-μA Typical Quiescent Current
• 200-kHz to 2.2-MHz Switching Frequency
• 0.8 V ± 1.5% Voltage Reference
• High-Voltage Tolerant Enable Input
• Soft Start on Enable Cycle
• Slew Rate Control on Internal Power Switch
• Low-Power Mode for Light-Load Conditions
• Programmable Delay for Power-On Reset
• External Compensation for Error Amplifier
• Reset Function Filter Time for Fast Negative Transients
• Programmable Overvoltage, Undervoltage Output Monitor
• Thermal Sensing and Shutdown
• Switch Current Limit Protection
• Short Circuit and Overcurrent Protection of FET
• Junction Temperature Range: –40°C to 150°C
• 20-Pin HTSSOP PowerPAD? Package

• Vin (Min) (V)
• 3.6
• Vin (Max) (V)
• 60
• Vout (Min) (V)
• 0.9
• Vout (Max) (V)
• 18
• Iout (Max) (A)
• 2
• Iq (Typ) (uA)
• 50
• Switching frequency (Min) (kHz)
• 200
• Switching frequency (Max) (kHz)
• 2200
• Features
• Enable, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Tracking, UVLO Adjustable
• Rating
• Automotive
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 90

TPS54262-Q1的完整型号有：TPS54262QPWPRQ1，以下是这些产品的关键参数及官网采购报价：

TPS54262QPWPRQ1，工作温度：-40 to 125，封装：HTSSOP (PWP)-20，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TPS54262QPWPRQ1的批量USD价格：1.784（1000+）

TPS54262EVM — TPS54262EVM 评估模块

德州仪器 (TI) TPS54262EVM 评估模块 (EVM) 能帮助设计者评估 TPS54262 开关模式电源 – 降压稳压器的操作和性能。该器件具有可配置性并且可设置为从 200KHz 切换至高达 2.2MHz。

TPS54262-Q1 PSpice Transient Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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