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參數(shù)資料
| 型號： | PT6625B |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PSMA14 |
| 封裝： | ROHS COMPLIANT, SMD-14 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 523K |
| 代理商： | PT6625B |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT6620 Series
Adjusting the Output Voltage of the
PT6620 6 A, 12-V 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
Va (min) and Va (max).
Adjust Up:
An increase in the output voltage is obtained
by adding a resistor R2, between Vo Adjust (pin 14) and
GND (pins 7-10).
Adjust Down:
Add a resistor (R1), between Vo Adjust (pin
14 ) and Vout (pins 11-13).
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 Vo Adjust to either GND,
Vout, or the Remote Sense pin. Any capacitance added to
the Vo adjust pin will affect the stability of the ISR.
3. If the Remote Sense feature is being used, connecting the
resistor (R1) between Vo Adjust (pin 14) and Remote Sense
(pin 1) can benefit load regulation.
4. The minimum input voltage required by the part is
Vout + 3, or 9 V, whichever is higher.
Figure 1
C
in
+
C
out
+
(R1)
Adj Down
R2
Adjust
Up
Vo
COM
Vin
PT6620
11,12,13
14
7,8,9,10
4,5,6
Vin
V o
GND
Vo(adj)
STBY
3
Vsense
1
L
O
A
D
The values of (R
1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
Ro (Va – 1.25)
(R1)
=
(Vo – Va)
– Rs
k
1.25 Ro
– Rs
k
R2
=
Va - Vo
Where: Vo = Original output voltage
Va = Adjusted output voltage
Ro = The resistance value in Table 1
Rs = The series resistance from Table 1
Table 1
PT6620 ADJUSTMENT AND FORMULA PARAMETERS
Series Pt #
PT6622
PT6623
PT6621
PT6624
PT6625
PT6626
Vo (nom)
1.5 V
2.5 V
3.3 V
3.6 V
5 V
9.0 V
Va (min)
1.4 V
1.9 V
2.3 V
2.5 V
2.9 V
5.2 V
Va (max)
2.7 V
3.7 V
4.5 V
4.8 V
6.5 V
10 V
Ro (k
)
4.99
10.0
12.1
16.2
12.1
Rs (k
)
2.49
4.99
12.1
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| PT6625D | 功能描述:DC/DC轉換器 1.2-5.5 V 6A 12V Inp Non-Iso Wide ADJ Mod 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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PT6625E | 功能描述:DC/DC轉換器 1.2-5.5 V 6A 12V Inp Non-Iso Wide ADJ Mod 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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PT6625F | 功能描述:REGULATOR 12V-5V 6A SIP W/CU ST RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6620 標準包裝:10 系列:PT4570 類型: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:- 安裝類型: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 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W |
| PT6625G | 功能描述:DC/DC轉換器 5Vout 6A 12V-Inp Adj ISR 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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PT6625L | 功能描述:REGULATOR 12V-5V 6A SIP W/CU HS RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6620 標準包裝:10 系列:PT4570 類型:隔離 輸出數(shù):1 電壓 - 輸入（最小）: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:- 安裝類型: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 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W |
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