Datasheet

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DISSIPATION RATINGS
RECOMMENDED OPERATING CONDITIONS
TPS51120
SLUS670B – JULY 2005 – REVISED FEBRUARY 2007
DERATING FACTOR T
A
= 85 ° C
T
A
< 25 ° C POWER RATING
PACKAGE ABOVE T
A
= 25 ° C POWER RATING
(W)
(W/ ° C) (W)
32-pin QFN
(1)
2.6 0.026 1.0
32-pin QFN
(2)
2.9 0.029 1.2
(1) JEDEC standard PCB.
(2) Enhanced thermal conductance by 3 x 3 thermal vias beneath thermal pad.
MIN MAX UNIT
Input voltage, V5FILT 4.5 5.5 V
VBST1, VBST2 -0.1 34
VBST1, VBST2 wrt LL -0.1 5.5
Input voltage range VIN, EN5 -0.1 28 V
SKIPSEL, TONSEL, EN1, EN2, CS1, CS2, V5FILT, VFB1, VFB2, EN3 -0.1 5.5
VO1, VO2 -0.1 5.5
DRVH1, DRVH2 -0.8 34
DRVH1, DRVH2 (wrt LL) -0.1 5.5
LL1, LL2 -0.8 28
Output voltage range V
VREF2, VREG5, VREG3, PGOOD1, PGOOD2, DRVL1, DRVL2, COMP1,
-0.1 5.5
COMP2
PGND1, PGND2 -0.1 0.1
VREF2 0.08
Source/sink current VBST 50 mA
VREG5, VREF3 (source only) 100
Operating ambient temperature range, T
A
-40 85 ° C
3
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