參數(shù)資料
型號： PT6505L
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA14
封裝： SIP-14
文件頁數(shù)： 24/28頁
文件大?。?/td> 620K
代理商： PT6505L
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT6500 Series
Adjusting the Output Voltage of the
PT6500 5V/3.3V Bus Converters
The output voltage of the Power Trends PT6500 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:
An increase in the output voltage is
obtained by adding a resistor R2, between pin 14 (V
o ad-
just) and pins 7-10 (GND).
Adjust Down:
Add a resistor (R1), between pin 14 (V
o
adjust) and pins 11-13 (V
out).
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 pin 14 (Vo
adjust) and pin 1 (Remote Sense) can benefit load
regulation.
4. The minimum input voltage required by the part is
Vout + 1.2 or Vin(min) from Table 1, whichever is
higher.
Figure 1
C
1
+
C
2
+
(R1)
Adj Down
R2
Adjust
Up
Vo
COM
Vin
COM
PT6500
11,12,13
14
7,8,9,10
4,5,6
V
in
V
out
GND
V
o(adj)
STBY
3
V
o(sense)
1
L
O
A
D
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
Ro (Va – 1.0)
(R1)
=
(Vo – Va)
– Rs k
Ro
– Rs
k
R2
=
Va - Vo
Where: V
o
= Original output voltage
V
a
= Adjusted output voltage
R
o
= The resistance value in Table 1
R
s
= The series resistance from Table 1
Table 1
PT6500ADJUSTMENTANDFORMULAPARAMETERS
Series Pt #
PT6505
PT6507
PT6502
PT6508
PT6506
PT6503
PT6501
PT6504
Vo (nom)
1.2
1.3
1.5
1.7
1.8
2.5
3.3
3.6
Va (min)
1.14
1.19
1.27
1.36
1.4
1.8
2.25
2.5
Va (max)
2.35
2.45
2.65
2.85
2.95
3.5
4.2
4.3
Ro (k
)
2.49
4.99
12.1
10.0
Rs (k
)
2.0
4.22
12.1
Vin(min)
3.1
4.5
相關PDF資料
PDF描述
PT6502L 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA14
PT6504F 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA14
PT6502S 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA3
PT6502M 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA14
PT6505Q 20 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, PSMA14
相關代理商/技術參數(shù)
參數(shù)描述
PT6505N 功能描述:開關變換器、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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
PT6506 制造商:TI 制造商全稱:Texas Instruments 功能描述:8 AMP ADJUSTABLE ISR WITH SHORT-CIRCUIT PROTECTION
PT6506A 功能描述:DC/DC轉換器 ADJUSTABLE 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:
PT6506B 功能描述:DC/DC轉換器 ADJUSTABLE 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:
PT6506C 功能描述:DC/DC轉換器 ADJUSTABLE 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:
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