TPS51124

D-CAP mode, synchronous buck controller, QFN, –0.3 to 36V, High Efficiency, Low-Power Consumption

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Price:: US $1.17~1.86 / piece [Get Latest Price]

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	US $1.17~1.86

PartNumber:: TPS51124

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

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2011-07-04

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Part Number:TPS51124
US $1.17 - 1.86
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Product Summary

The TPS51124 is a dual, adaptive on-time D-CAP mode synchronous buck controller. The part enables system desingers to cost effectively complete the suit of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The TPS51124 fixed frequency emulated adaptive on-tmie control supports seamless operation betweent PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to miliampere range. The TPS51124 is suitable for Notebook I/O and Low Voltage System Bus.

Parametrics

TPS51124 absolute maximum ratings: (1)input voltage range, VBST1, VBST2: –0.3 to 36V; Input voltage VBST1, VBST2 (wrt LLx): –0.3 to 6 V; V5IN, V5FILT, EN1, EN2, VFB1, VFB2, TRIP1, TRIP2, VO1, VO2, TONSEL: –0.3 to 6V; (2)output voltage range, DRVH1, DRVH2: –1 to 36V; DRVH1, DRVH2 (wrt LLx): –0.3 to 6V; LL1, LL2: –2 to 30 V; PGOOD1, PGOOD2, DRVL1, DRVL2: –0.3 to 6V; PGND1, PGND2: –0.3 to 0.3V; (3)TA, Operating ambient temperature range: –40 to 85℃; (4)Tstg, Storage temperature range: –55 to 150℃; (5)TJ, Junction temperature range: –40 to 125℃.

Features

TPS51124 features: (1)High Efficiency, Low-Power Consumption, Shutdowns to <1 mA; (2)Fixed Frequency Emulated On-Time Control, Frequency Selectable From Three Options; (3)D-CAP Mode Enables Fast Transient Response; (4)Auto-Skip Mode; (5)Less Than 1% Initial Reference Accuracy; (6)Low Output Ripple; (7)Wide Input Voltage Range: 3 V to 28 V; (8)Output Voltage Range: 0.76 V to 5.5 V; (9)Low-Side RDS(ON) Loss-less Current Sensing; (10)Adaptive Gate Drivers With Integrated Boost Diode; (11)Internal 1.2-ms Voltage-Servo Soft Start; (12)Power-Good Signals for Each Channel With Delay Timer; (13)Output Discharge During Disable, Fault.