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參數資料
| 型號： | PT6429D |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, SMA14 |
| 封裝： | SIP-14 |
| 文件頁數： | 3/7頁 |
| 文件大?。?/td> | 153K |
| 代理商： | PT6429D |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT6420 Series
Adjusting the Output Voltage of the PT6420 Series
3AMP 5V Bus Converters
The output voltage of the Power Trends PT6420 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:
(See note 1) An increase in the output voltage
is obtained by adding a resistor R1, between pin 14 (V
o
adjust) and pins 11-13 (V
out).
Adjust Down:
(See note 1) Add a resistor (R2), between
pin 14 (V
o adjust) and pins 7-10 (GND).
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. The direction in which each resistor adjusts the output of
the PT6420 series differs from many other Power Trends
products. These output voltage adjustment notes are
therefore specific only to the PT6420 models.
2. Use only a single 1% resistor in either the R1 or (R2)
location. Place the resistor as close to the ISR as possible.
3. 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.
4. The PT6420 incorporates a Remote Sense (See Figure 1).
If this feature is being used, connecting the resistor R1
between pin 14 (V
o adjust) and pin 1 (Remote Sense) can
benefit load regulation.
5. An increase in the output voltage may place additional
limits on the input voltage range of the part. The revised
minimum input voltage will be (V
out + 1.2) or 4.5V,
whichever is higher. Do not exceed 5.5Vdc.
Table 1
PT6420 ADJUSTMENT RANGE
Series Pt #
PT6428
PT6424
PT6426
PT6427
PT6429
PT6425
Vo (nom)
1.2
1.5
1.8
2.1
2.5
3.3
Va (min)
1.1
1.3
1.5
1.8
2.1
2.8
Va (max)
1.41.8
2.2
2.6
3.1
3.8
Figure 1
R1
Adjust
Up
C1
100
F
C2
100
F
Vo
COM
Vin
+
(R2)
Adj Down
L
O
A
D
PT6420
11,12,13
14
7,8,9,10
4,5,6
Vin
V o
G N D
Vo(adj)
1
Vsense
The values of R1 [adjust up], and (R2) [adjust down], can
also be calculated using the following formulae.
12.45 Vo
R1
=
(Va – Vo)
– 49.9
k
12.45 (2Va – Vo) – 49.9 k
(R2)
=
Vo – Va
Where:
V
o
= Original output voltage
V
a
= Adjusted output voltage
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相關代理商/技術參數 |
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| PT6429E | 功能描述:REGULTR 2.5V 3A SYNC 14XL SMD RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6420 標準包裝:10 系列:PT4570 類型:隔離 輸出數: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 |
| PT6429P | 功能描述:DC/DC轉換器 2.5Vout 3A 5V-Inp Adj Step-Down ISR RoHS:否 制造商:Murata 產品: 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: |
| PT6434 | 制造商:Lorlin Electronics Ltd 功能描述: |
| PT6434/BMH | 制造商:Lorlin 功能描述:SWITCH 1POLE 12 POS 制造商:Lorlin 功能描述:SWITCH, 1POLE, 12 POS 制造商:Lorlin 功能描述:SWITCH, 1POLE, 12 POS, No. of Poles:1, No. of Switch Positions:12, Angle of Thro |
| PT6434/BMH | 制造商:Lorlin 功能描述:SWITCH 1 POLE 12 POS |
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