Product Summary

The TPS51020DBT is a multi-function dual-synchronous step-down controller for notebook system power. The part is specifically designed for high performance, high efficiency applications where the loss associated with a current sense resistor is unacceptable. The TPS51020DBT utilizes feed forward voltage mode control to attain high efficiency without sacrificing line response. Efficiency at light load conditions can be maintained high as well by incorporating autoskip operation. The applications of the TPS51020DBT include Notebook Computers System Bus and I/O, DDR I or DDR II Termination.

Parametrics

TPS51020DBT absolute maximum ratings: (1)Input voltage range, VBST1, VBST2: -0.3 to 35V; VBST1, VBST2 (with respect to LL ): -0.3 to 7V; VIN, TRIP1, TRIP2, ENBL1, ENBL2, DDR: -0.3 to 30V; SKIP, INV1, INV2: -0.3 to 7V; (2)Ouput voltage range, OUT1_U, OUT2_U: -1 to 35V; OUT1_U, OUT2_U (with respect to LL): -0.3 to 7 V; LL1, LL2: -1 to 30V; REF_X: -0.3 to 15V; PGOOD, VO1_VDDQ, VO2, OUT1_D, OUT2_D, COMP1, COMP2, VREG5, SSTRT1, SSTRT2: -0.3 to 7V; OUTGND1, OUTGND2: -0.3 to 0.3V; (3)Output current range, VREG5: 70mA; REF_X: 7mA; (4)Operating free-air temperature range, TA: -40 to 85℃; (5)Storage temperature range, Tstg: -55 to 150℃; (6)Junction temperature range, TJ: -40 to 125℃; (7)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 300℃.

Features

TPS51020DBT features: (1)Wide Input Voltage Range: 4.5-V to 28-V; (2)Selectable Dual and DDR Modes; (3)Selectable Fixed Frequency Voltage Mode; (4)Integrated Selectable Output Discharge; (5)Advanced Power Good Logic Monitors both Channels; (6)Selectable Autoskip Mode; (7)Integrated Boot Strap Diodes; (8)180° Phase Shift Between Channels; (9)Integrated 5-V, 60-mA Regulator; (10)Input Feedforward Control; (11)1% Internal 0.85-V Reference; (12)RDS(on) Overcurrent Detection (4200 ppm/℃); (13)Integrated OVP, UVP and Power Good Timers; (14)30-pin TSSOP Package.

Diagrams

TPS51020DBT block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TPS51020DBT
TPS51020DBT

Texas Instruments

DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1: $3.37
1-25: $2.75
25-100: $2.12
100-250: $1.99
TPS51020DBTG4
TPS51020DBTG4

Texas Instruments

DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1: $3.83
1-25: $2.75
25-100: $2.30
100-250: $1.99
TPS51020DBTR
TPS51020DBTR

Texas Instruments

DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1575: $1.60
1575-2000: $1.58
TPS51020DBTRG4
TPS51020DBTRG4

Texas Instruments

DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1570: $1.61
1570-2000: $1.61