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參數(shù)資料
| 型號： | APC12F08-9J |
| 英文描述： | CHOKE,AXIAL,CONFORMAL,100uH, 5% INDUCTIVE TOL,275 IDC, |
| 中文描述： | 非隔離DC / DC電源模塊微型貼片足跡- 1.8 - 12V輸入，0.9V至3.6V的輸出 |
| 文件頁數(shù)： | 11/23頁 |
| 文件大小： | 684K |
| 代理商： | APC12F08-9J |
Technical Reference Notes
APC12 Centauri II
Trim Function
(continued)
Method 2: External DC Source
By connecting an external DC supply across P4 (Enable) and P3 (GND) through a limiting resistor Rt, (see Figure 5), output
voltage adjustment can also be achieved. Equation 3 provides the relationship between the External DC supply, Vt, and Vo
(where Vo is the desired output voltage).
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 11 OF 23
Given:
Rt
= 10k
Vo Adjustment to Lower Voltages.
This method does not limit the recommended lower Vo adjustment to 2% as mentioned
on previous sections re: Vo adjustment through external trim resistor.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 1.8V
Vo = 1.8V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = 3.0V.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 0.9V
Vo = 0.9V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = 5.9V.
Vo Adjustment to Higher Voltages
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 3.3V
Vo = 3.3V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = -1.84V.
If application of negative voltage is not desired, the limiting resistor
Rt
can either be changed to a lower value (
Rt
=
1k
, such
that Vt = 0.60V per Equation 3), or use Method 1.
Vo
R
Rt
Vref
R
Rt
R
Rt
Vt
1
2
1
1
+
+
=
Equation (3)
Figure 5. External DC source for output trim adjust.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| APC12F08-9MAJ | CHOKE,AXIAL,CONFORMAL,1000uH, 5% INDUCTIVE TOL,100 IDC, |
| APC12G03-9J | CHOKE,AXIAL,CONFORMAL,27uH, 10% INDUCTIVE TOL,390 IDC, |
| APC12G03-9MAJ | CHOKE,AXIAL,CONFORMAL,33uH, 5% INDUCTIVE TOL,370 IDC, |
| APC12G08-9J | CHOKE,AXIAL,CONFORMAL,390uH, 5% INDUCTIVE TOL,133 IDC, |
| APC12G08-9MAJ | CHOKE,AXIAL,CONFORMAL,47uH, 5% INDUCTIVE TOL,340 IDC, |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| APC12F08-9MAJ | 制造商:ASTEC 制造商全稱:Astec America, Inc 功能描述:Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
| APC12F08-9MAL | 功能描述:DC/DC轉(zhuǎn)換器 DC-DC 1-OUT 3.3V 12A 7-Pin SMT RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| APC12F08-JL | 功能描述:DC/DC轉(zhuǎn)換器 DC-DC 1-OUT 3.3V 12A 7-Pin SMT RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| APC12G03 | 制造商:ASTEC 制造商全稱:Astec America, Inc 功能描述:Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
| APC12G03-9J | 制造商:ASTEC 制造商全稱:Astec America, Inc 功能描述:Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
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