參數(shù)資料
型號(hào)： PT6345C
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA12
封裝： ROHS COMPLIANT, SMD-12
文件頁(yè)數(shù)： 9/11頁(yè)
文件大?。?/td> 188K
代理商： PT6345C
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT6340 Series
Adjusting the Output Voltage of the PT6340
Excalibur
6 A, 12 V Bus Step-Down ISRs
The output voltage of the PT6340 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 for either series as Va (min) and Va (max).
Adjust Up:
An increase in the output voltage is obtained by
adding a resistor R2, between pin 12 (Vo adj) and pins 5-8
(GND).
Adjust Down:
Add a resistor (R1), between pin 12 (Vo adj) and
pins 9-11 (Vo).
Figure 1
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulas. Refer to
Figure 1 and Table 2 for both the placement and value of the
required resistor; either (R1) or R2 as appropriate.
(R1)
=
Ro (Va – Vr)
– Rs
k
Vo – Va
R2
=
Vr Ro
– Rs
k
Va – Vo
Where:
Vo = Original output voltage
Va = Adjusted output voltage
Vr = Reference voltage (Table 1)
Ro = Resistance constant (Table 1)
Rs = Internal series resistance (Table 1)
Table 1
ISR ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt #
PT6341
PT6342
PT6343
PT6244
PT6345
PT6346
Vo (nom)
5.0
3.3
2.5
1.8
1.5
1.2
Va (min)
4.0
2.8
2.2
1.7
1.45
1.1
Va (max)
5.5
3.8
3.0
2.3
2.0
1.45
Vr (V)
1.27
0.8
Ro (k
)
10.0
Rs (k
)
24.9
R2
Adjust Up
C
2
+V
O
COM
+V
IN
+
(R1)
Adj Down
PT6340
2,3,4
5–812
9,10,11
Vin
V o
Vo(adj)
GND
C
1
+
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 adj to either GND or
Vout. Any capacitance added to the Vo adjust pin will
affect the stability of the ISR.
相關(guān)PDF資料
PDF描述
PT6342C 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA12
PT6341N 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA12
PT6346C 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA12
PT6341C 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA12
PT6365N 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT6345N 功能描述:DC/DC轉(zhuǎn)換器 1.5Vout 6A 12V-Input Adj Step-Down 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(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:
PT6346 制造商:TI 制造商全稱:Texas Instruments 功能描述:6-A 12-V Input Adjustable Integrated Switching Regulator
PT6346A 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 1.2V 6A 12-V Input Adj Step-Down 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
PT6346C 功能描述:REG 1.2V 6A 10.8/13.2VIN SMD RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6340 設(shè)計(jì)資源:Maxi/Mini/Micro Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:Maxi 類型:隔離 輸出數(shù):1 電壓 - 輸入（最小）:43V 電壓 - 輸入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:400W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼:模塊 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包裝:散裝 工作溫度:-55°C ~ 100°C 效率:* 電源（瓦特）- 最大:*
PT6346N 功能描述:REG 1.2V 6A 10.8/13.2VIN VERT RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6340 設(shè)計(jì)資源:Maxi/Mini/Micro Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:Maxi 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?43V 電壓 - 輸入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:400W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼:模塊 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包裝:散裝 工作溫度:-55°C ~ 100°C 效率:* 電源（瓦特）- 最大:*
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