Datasheet

PTH08T240W , PTH08T241W
www.ti.com ................................................................................................................................................... SLTS264J – NOVEMBER 2005 – REVISED JUNE 2009
ELECTRICAL CHARACTERISTICS (continued)
PTH08T241W (Ceramic Capacitors)
T
A
= 25 ° C, V
I
= 5 V, V
O
= 3.3 V, C
I
= 200 µ F ceramic, C
O
= 300 µ F ceramic, and I
O
= I
O
max (unless otherwise stated)
PARAMETER TEST CONDITIONS PTH08T241W UNIT
MIN TYP MAX
C
I
External input capacitance 200
(5)
µ F
w/o TurboTrans Capacitance Value Ceramic 300
(6)
3000
(7)
µ F
see table
C
O
External output capacitance Capacitance Value 5000 µ F
(6)
w/ TurboTrans
Capacitance × ESR product (C
O
× ESR) 100 1000 µ F × m Ω
Per Telcordia SR-332, 50% stress,
MTBF Reliability 6.1
10
6
Hr
T
A
= 40 ° C, ground benign
(5) 200 µ F of input capacitance is required for proper operation. 200 µ F of ceramic or 220 µ F of electrolytic input capacitance can be used.
Electrolytic capacitance must be rated for a minimum of 500 mA rms of ripple current. An additional 22- µ F ceramic input capacitor is
recommended to reduce rms ripple current.
(6) 300 µ F of ceramic output capacitance is required for basic operation. The minimum output capacitance requirement increases when
TurboTrans™ (TT) technology is utilized. Additionally, low ESR capacitors are required for proper operation. See related Application
Information for more guidance.
(7) This is the calculated maximum disregarding TurboTrans™ technology.
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