參數(shù)資料
型號(hào): PTH04040WAH
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: DIP-20
文件頁(yè)數(shù): 20/25頁(yè)
文件大小: 535K
代理商: PTH04040WAH
SLTS238C – SEPTEMBER 2005 – REVISED JUNE 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TA = 25°C, VI = 5 V, VO = 2.5 V, CI = 1000 F, CO = 660 F, and IO = IOmax (unless otherwise stated)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CI
External input capacitance
940(8)
F
Nonceramic
660(9)
14000(10)
Capacitance value
F
CO
External output capacitance
Ceramic
400
Equivalent series resistance (nonceramic)
2(11)
m
2.1
MTBF
Reliability
Per Bellcore TR-332 50% stress, TA = 40°C, ground benign
106Hrs
(8)
A minimum capacitance of 940 mF is required at the input for proper operation. The capacitance must be rated for a minimum of
400 mArms of ripple current.
(9)
660 mF of output capacitance is required for proper operation. Additional capacitance at the load will improve transient response.
(10) This is the calculated maximum. The minimum ESR requirement often results in a lower value. See the Capacitor Application
Information section for further guidance.
(11) This is the typical ESR for all the electrolytic (nonceramic) output capacitance. Use 4 m
as the minimum when using max-ESR values
to calculate.
4
Copyright 2005–2010, Texas Instruments Incorporated
Product Folder Link(s): PTH04040W
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