Datasheet
TPS51220A
www.ti.com
SLUS897E –DECEMBER 2008–REVISED JANUARY 2013
ABSOLUTE MAXIMUM RATINGS
(1)
over operating free-air temperature range (unless otherwise noted)
TPS51220A UNIT
VIN –0.3 to 34
VBST1, VBST2 –0.3 to 39
VBST1, VBST2
(3)
–0.3 to 7
SW1, SW2 –7 to 34
Input voltage range
(2)
V
CSP1, CSP2, CSN1, CSN2 –1 to 13.5
EN, EN1, EN2, VFB1, VFB2, TRIP, SKIPSEL1, SKIPSEL2, FUNC –0.3 to 7
V5SW –1 to 7
V5SW (to VREG5)
(4)
–7 to 7
DRVH1, DRVH2 –7 to 39
DRVH1, DRVH2
(3)
–0.3 to 7
DRVH1, DRVH2
(3)
(duty cycle < 2%) –2 to 7
Output voltage range
(2)
V
DRVL1, DRVL2 (duty cycle < 2%) –2 to 7
DRVL1, DRVL2, COMP1, COMP2, VREG5, RF, VREF2,
–0.3 to 7
PGOOD1, PGOOD2
VREG3 –0.3 to 3.6
T
J
Junction temperature 150 °C
T
stg
Storage temperature –55 to 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
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.
(2) All voltage values are with respect to the network ground terminal unless otherwise noted.
(3) Voltage values are with respect to the corresponding SW terminal.
(4) When EN is high and V5SW is grounded, or voltage is applied to V5SW when EN is low.
DISSIPATION RATINGS (2 oz. Trace and Copper Pad with Solder)
T
A
< 25°C DERATING FACTOR T
A
= 85°C
PACKAGE POWER RATING ABOVE T
A
= 25°C POWER RATING
(W) (mW/°C) (W)
32-pin RTV 1.7 17 0.7
32-pin RSN 2.3 23 0.9
RECOMMENDED OPERATING CONDITIONS
MIN TYP MAX UNIT
VIN 4.5 32 V
Supply voltage
V5SW –0.8 6
VBST1, VBST2 –0.1 37
DRVH1, DRVH2 –4. 37
DRVH1, DRVH2 (wrt SW1, 2) –0.1 6
DRVH1, DRVH2 (negative overshoot -6 V for t < 20% duration of the -6 37
switching period)
SW1, SW2 –4. 32
I/O voltage V
SW1, SW2 (negative overshoot -6 V for t < 20% duration of the -6 32
switching period)
CSP1, CSP2, CSN1, CSN2 –0.8 13
EN, EN1, EN2, VFB1, VFB2, TRIP, DRVL1, DRVL2, COMP1, COMP2,
VREG5, RF, VREF2, PGOOD1, PGOOD2, SKIPSEL1, SKIPSEL2, –0.1 6
FUNC
VREG3 –0.1 3.5
T
A
Operating free-air temperature –40 85 °C
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