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TPS51225 Datasheet PDF

Part Series:TPS51225 Series
Category:Voltage Regulators
Description:DC-DC Cntrlr Dual-OUT Step Down 360kHz/430kHz 20Pin WQFN EP T/R
Document:TPS51225RUKR Datasheet PDF (35 Pages)

TPS51225 Datasheet PDF Voltage Regulators

31 Pages
TI
DC-DC Cntrlr Dual-OUT Step Down 360kHz/430kHz 20Pin WQFN EP T/R
31 Pages
TI
DC-DC Cntrlr Dual-OUT Step Down 360kHz/430kHz 20Pin WQFN EP T/R
31 Pages
TI
TPS51225 DC to DC Controller 3.3VDC/5VDC Output Evaluation Board

TPS51225CRUKR - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
20 Pin
Case/Package
WQFN-20
Number of Outputs
2 Output
Quiescent Current
900 µA
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TPS51225CRUKR - TI Function Overview

DESCRIPTION
The TPS51225/B/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 external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51225/B/C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5.5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51225/B/C is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified from –40°C to 85°C.
FEATURES
• Input Voltage Range: 5.5 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 (TPS51225/C)
• OOA Light Load Operation (TPS51225B)
• 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(TPS51225/B/C)
• 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
• Netbook, Tablet Computers
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