參數(shù)資料
型號(hào): TC1264-2.5VEBTR
元件分類: 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述: 2.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3
封裝: D2PAK-3
文件頁數(shù): 4/8頁
文件大?。?/td> 55K
代理商: TC1264-2.5VEBTR
4
TC1264
800mA Fixed Output CMOS LDO
TC1264-4 3/28/00
Equation 1 can be used in conjunction with Equation 2
to ensure regulator thermal operation is within limits. For
example:
GIVEN:
V
INMAX
= 3.3V
±
10%
V
OUTMIN
= 2.7V
±
0.5%
I
LOADMAX
= 275mA
T
JMAX
= 125
°
C
T
AMAX
= 95
°
C
JA
= 59
°
C/W (SOT-223)
FIND:
1. Actual power dissipation
2. Maximum allowable dissipation
Actual power dissipation:
P
D
(V
INMAX
– V
OUTMIN
)I
LOADMAX
= [(3.3 x 1.1) – (2.7 x .995)]275 x 10
-3
= 260mW
Maximum allowable power dissipation:
P
D
MAX
= (T
JMAX
– T
AMAX
)
JA
=
(125 – 95)
59
=
508mW
In this example, the TC1264 dissipates a maximum of
only 260mW; far below the allowable limit of 508mW. In a
similar manner, Equation 1 and Equation 2 can be used to
calculate maximum current and/or input voltage limits. For
example, the maximum allowable V
IN
is found by substitut-
ing the maximum allowable power dissipation of 508mW
into Equation 1, from which V
INMAX
= 4.6V.
相關(guān)PDF資料
PDF描述
TC1264-3.0VDBRT 3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3
TC1264-3.0VDBTR 3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3
TC1264-3.0VEBTR 3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3
TC1264-3.3VAB 3.3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3
TC1264-3.3VDBTR 3.3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3
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