TPS51120RHBT

Rise Time :
Fall Time :
Mounting Style : SMD/SMT
Number of Outputs : 2
Maximum Operating Temperature : + 85 C
Package / Case : QFN-32
Operating Supply Voltage : 4.5 V to 5.5 V
Switching Frequency : 580 KHz
Duty Cycle (Max) : 88 %
Operating Supply Current : 0.75 mA


Description

The TPS51120RHBT belongs to the TPS51120 family. 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 downstream circuitry in a notebook computer system. High current, 100-mA, 5-V or 3.3-V on-board linear regulators TPS51120RHBT have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency 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 condition.

The features of TPS51120RHBT are (1) 3.3-V and 5-V 100-mA bootstrapped standby regulators with independent enables; (2) selectable D-CAP® mode enables fast transient response less than 100 ns; (3) integrated 2-v reference; (4) integrated 2-v reference; (5) selectable PWM-only/auto-skip modes; (6) less than 1% internal reference accuracy;(7); internal soft-start and integrated VOUT discharge transistors (8) selectable low ripple current mode; (9) low-side RDS(on) loss-less current sensing; (10) RSENSE accurate current sense option; (11) power good for each channel with delay timer; (12) supply input voltage range: 4.5 V to 28 V; (13) adaptive gate drivers with integrated boost diode; (14) fault disable mode, which can be used in notebook computers system bus and I/O.

The absolute maximum ratings(note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress rating only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to the network ground terminal unless otherwise noted.) of TPS51120RHBT for input voltage range are (1) VBST1, VBST2 : -0.3 to 36V; (2) VIN, EN5: -0.3 to 30 V; (3)SKIPSEL, TOLNSE, EN1, EN2, CS1, CS2, V5FILT, VFB1, VFB2, EN3, VO1, VO2:  -0.3 to 6V. For Output vantage range are (1)DRVH1, DRVH2:  -1 to 36V; (2)DRVH1, DRVH2(wrt LL):-0.3 to 6V; (3)LL1, LL2: -2.0 to 30V; (4)PGOOD1, PGOOD2, DRVL1, DRVL2, COMP1, COMP2,VREF2, VREG3: -0.3 to 6 V; (5)PGND1, PGND2: -0.3 to 0.3 V; and TJ (junction temperature range): -40 to 125 ; Tstg(storage temperature): -55 to 150; TA(operating amibient temperature range): -40 to 85; lead temperature 1.6mm(1/16 inch) from case for 10 seconds: 255.

Parameters:

Technical/Catalog Information	TPS51120RHBT
Vendor	Texas Instruments (VA)
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	2
Voltage - Input	4.5 ~ 28 V
Voltage - Output	1.05 ~ 5.5 V
Current - Output	20A
Power - Output	2.6W
Package / Case	32-VQFN
Packaging	Digi-Reel?
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	-40°C ~ 85°C
Frequency - Switching	180kHz, 270kHz, 380kHz, 580kHz
Drawing Number	296; 4204326; RHB; 32
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	TPS51120RHBT TPS51120RHBT 296 18341 6 ND 296183416ND 296-18341-6