TPS51275CRUKR

製品の特徴：

FEATURE

• Input Voltage Range: 5 V to 24 V

 • Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)

• Built-in, 100-mA, 5-V and 3.3-V LDOs

• Clock Output for Charge-Pump

• ±1% Reference Accuracy

• Adaptive On-time D-CAP™ Mode Control Architecture with 300kHz/355kHz Frequency Setting

• Auto-skip Light Load Operation

• Internal 0.8-ms Voltage Servo Soft-Start

• Low-Side RDS(on) Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient

• Built-in Output Discharge Function

• Separate Enable Input for Switchers

• Dedicated OC Setting Terminals

• Power Good Indicator

• OVP/UVP/OCP Protection

• Non-latch UVLO/OTP Protection

• 20-Pin, 3 mm × 3 mm, QFN (RUK)

APPLICATIONS

• Notebook Computers

• Tablet Computers

DESCRIPTION


The TPS51275/C is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few extemal components. The 260-kHz VCLK output can be used to drive an exteral charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51275/C supports high efficiency.fast transient response and provides a combined power-good signal. Adaptive on-time,D-CAPm control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5 V to 24 V and supports output yoltages of 5.0 V and 3.3 V. The TPS51275/C is available in a 20-pin, 3 mm× 3 mm,QFN package and is specified from -40℃ to 85℃.

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