TPS51120

step-down controller, 32VQFN, -0.3 to 6 V, TPS51120, Texas

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Price:: US $0.89~1.00 / piece [Get Latest Price]

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	US $0.89~1.00

PartNumber:: TPS51120

Brand:: Texas Instruments - TI | Pack: QFN | D/C: 10+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-01-13

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Part Number:TPS51120
US $0.89 - 1.00
CM2030-A0TR

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2DI240A-055

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Product Summary

The TPS51120 is a highly sophisticated dual current mode synchronous step-down controller. It is a full featured controller designed to run directly off a three or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the down-stream circuitry in a notebook computer system. High current, 100-mA, 5-V or 3.3-V on-board linear regulators of TPS51120 have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency of TPS51120 adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load Reference condition. The device is suitable for Notebook Computers System Bus and I/O.

Parametrics

TPS51120 absolute maximum ratings: (1)Input voltage range: VIN, EN5: -0.3 to 30 V, SKIPSEL, TONSEL, EN1, EN2, CS1, CS2, V5FILT, VFB1, VFB2, EN3, VO1, VO2: -0.3 to 6 V; (2)Output voltage range: -1 to 30 V; (3)Source/sink current: 100 mA; (4)Operating ambient temperature range: -40 to 85 ℃; (5)Storage temperature: -55 to 150 ℃; (6)Junction temperature: -40 to 125 ℃; (7)Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds: 255 ℃.

Features

TPS51120 features: (1)3.3-V and 5-V 100-mA Bootstrapped Standby Regulators with Independent Enables; (2)Selectable D-CAP Mode Enables Fast three Transient; (3)Response Less than 100 ns; (4)Selectable Low Ripple Current Mode; (5)Less than 1% Internal Reference Accuracy; (6)Selectable PWM-only/Auto-skip Modes; (7)Low-side RDS(on) Loss-less Current Sensing; (8)RSENSE Accurate Current Sense Option; (9)Internal Soft-start and Integrated VOUT compen Discharge; (10)Transistors; (11)Integrated 2-V Reference.