參數(shù)資料
型號(hào)： PT6621R
英文描述： Analog IC
中文描述： 模擬IC
文件頁(yè)數(shù)： 3/6頁(yè)
文件大?。?/td> 129K
代理商： PT6621R
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT6620 Series
Adjusting the Output Voltage of the
PT6620 7Amp12V Bus Converter Series
The output voltage of the Power Trends PT6620 Series
ISRs may be adjusted higher or lower than the factory
trimmed pre-set voltage with the addition of a single
external resistor. Table 1 accordingly gives the allowable
adjustment range for each model in the series as V
a
(min)
and V
a
(max).
Adjust Up:
obtained by adding a resistor R2, between pin 14 (V
o
ad-
just) and pins 7-10 (GND).
An increase in the output voltage is
Adjust Down:
adjust) and pins 11-13 (V
out
).
Add a resistor (R1), between pin 14 (V
o
Refer to Figure 1 and Table 2 for both the placement and value
of the required resistor, either
(R1)
or R2 as appropriate.
Notes:
1. Use only a single 1% resistor in either the
(R1)
or R2
location. Place the resistor as close to the ISR as possible.
2. Never connect capacitors from V
o
adjust to either GND,
V
out
, or the Remote Sense pin. Any capacitance added to
the V
o
adjust pin will affect the stability of the ISR.
3. If the Remote Sense feature is being used, connecting the
resistor
(R1)
between pin 14 (V
o
adjust) and pin 1 (Remote
Sense) can benefit load regulation.
4. The minimum input voltage required by the part is
V
out
+ 3, or 9V, whichever is higher.
Figure 1
C
in
+
C
out
+
(R1)
Adj Down
R2
Adjust
Up
Vo
COM
COM
Vin
PT6620
11,12,13
14
7,8,9,10
4,5,6
Vin
Vo
GND
Vo(adj)
STBY
3
Vsense
1
L
O
A
D
The values of
(R1)
[adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
R
o
(V
a
– 1.25)
(V
o
– V
a
)
(R1)
=
– R
s
k
1.25 R
o
V
a
- V
o
– R
s
k
R2
=
Where: V
o
= Original output voltage
= Adjusted output voltage
= The resistance value in Table 1
= The series resistance from Table 1
V
a
R
o
R
s
Table 1
PT6620 ADJUSTMENT AND FORMULA PARAMETERS
Series Pt #
PT6622
PT6623
PT6621
PT6624
PT6625
PT6626
Vo (nom)
Va (min)
Va (max)
Ro (k
)
Rs (k
)
1.5V
1.4V
2.7V
4.99
2.49
2.5V
1.9V
3.7V
10.0
4.99
3.3V
2.3V
4.5V
12.1
12.1
3.6V
2.5V
4.8V
12.1
12.1
5.0V
2.9V
6.5V
16.2
12.1
9.0V
5.2V
10.0V
12.1
12.1
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT6622 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:6 AMP 12V INPUT INTEGRATED SWITCHING REGULATOR
PT6622B 功能描述:REGULATOR 12V-1.5V 7A SIP HSMD H RoHS:否 類(lèi)別:電源 - 板載 >> DC DC Converters 系列:PT6620 標(biāo)準(zhǔn)包裝:10 系列:PT4570 類(lèi)型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點(diǎn):- 安裝類(lèi)型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤(pán) 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W
PT6622D 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 ADJUSTABLE ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
PT6622E 功能描述:REGULATOR 12V-1.5V 7A SIP HSMD RoHS:否 類(lèi)別:電源 - 板載 >> DC DC Converters 系列:PT6620 標(biāo)準(zhǔn)包裝:10 系列:PT4570 類(lèi)型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點(diǎn):- 安裝類(lèi)型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤(pán) 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W
PT6622F 功能描述:REGULATOR 12V-1.5V 7A SIP W/CU S RoHS:否 類(lèi)別:電源 - 板載 >> DC DC Converters 系列:PT6620 標(biāo)準(zhǔn)包裝:10 系列:PT4570 類(lèi)型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點(diǎn):- 安裝類(lèi)型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤(pán) 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W
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