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參數(shù)資料
| 型號(hào)： | AP1086K25A |
| 英文描述： | 1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
| 中文描述： | 1.5A的低壓差正可調(diào)或固定模式穩(wěn)壓器 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大小： | 92K |
| 代理商： | AP1086K25A |
ML4818
PRODUCT SPECIFICATION
10
REV. 1.0.3 6/21/01
Thermal Information
The ML4818 is offered in a Power DIP package. This pack-
age features improved thermal conduction through the lead-
frame. Much of the heat is conducted through the center 4
grounded leads. Thermal dissipation can be improved with
this package by using copper area on the board to function as
a heat sink. Increasing this area can reduce the
θ
(see fig-
ures 14 and 15), increasing the power handling capability of
the package. Additional improvement may be obtained by
using an external heat sink (available from Staver).
Applications
The application circuit shown in Figure 16 features the
ML4818 in a primary-side controlled voltage mode
application with voltage feed-forward. Input voltage is
rectified 120VAC (nominal). Feed-forward is provided by
the RAMP pin via the resistor connected to the high voltage
input. Current is sensed through sense transformer T4.
Figure 14. PC Board Copper Area Used as a Heat Sink
Figure 15.
θ
JA
as a Function of I (see figure 15)
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
0.555"
I
I
I
I
50
30
20
0
2
I : HEAT SINK DIMENSION (INCHES)
40
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AP1086K25G-13 | 功能描述:低壓差穩(wěn)壓器 - LDO 3-TERM ADJ OR FIXED 1.4V LDO 3.3V LOGIC RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| AP1086K25G-U | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR |
| AP1086K25L | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
| AP1086K25L-13 | 功能描述:低壓差穩(wěn)壓器 - LDO LDO BI 1.5A 1.4V 12V 1.25V 2.5V FIX RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| AP1086K25LA | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
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