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参数资料
| 型号： | PT6727N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 13 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA17 |
| 封装： | ROHS COMPLIANT, VERTICAL MOUNT PACKAGE-17 |
| 文件页数： | 7/10页 |
| 文件大小： | 207K |
| 代理商： | PT6727N |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT6725 Series
Adjusting the Output Voltage of the PT6725
Series of Integrated Switching Regulators
The PT6725 series of ISRs are non-programmable
versions of the PT6721/2 Excalibur regulators. The
regulators have a fixed output voltage, which may be
adjusted higher or lower than the factory pre-set voltage
using a single external resistor. Table 1 gives the adjust-
ment 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 pin 1 (Vo Adjust) and pin 7
(Remote Sense GND).
Adjust Down:
Add a resistor (R1), between pin 1 (Vo Adjust)
and pin 17 (Remote Sense Vout).
Refer to Figure 1 and Table 2 for both the placement and value
of the required resistor, either (R1) or R2 as appropriate.
The values of (R
1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulas.
Ro ( Va –Vr )
(R1)
=
Vo – Va
– Rs
k
Ro Vr
– Rs
k
R2
=
Va – Vo
Where: Vo = Original output voltage
Va = Adjusted output voltage
Vr = The reference voltage (Table 1)
Ro = The multiplier resistance (Table 1)
Rs = The internal series resistance (Table 1)
Figure 1
Notes:
1. Use only a single 1% resistor in either the (R1) or R2
location. Place the resistor as close to the regulator as
possible.
2. Never connect capacitors from Vo Adjust to either GND,
Vout, or the Remote Sense pins. Adding capacitance to the
Vo Adjust pin will affect the stability of the ISR.
3. If the Remote Sense feature is not being used, pin 7 must
be connected to pin 8 for optimum output voltage
accuracy. The resistors (R1) and R2 may then be connected
from ‘Vo Adjust’ to either Vout or GND respectively.
L
O
A
D
(R1)
Adj Down
R2
Adjust Up
C
out
+
C
in
+
COM
+5V
Vo
COM
PT6725
Sns(+)
Sns(-)
V
out
GND
Vo(adj)
V
in
Stby*
13–16
17
7
1
8–12
4,5,6
2
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相关代理商/技术参数 |
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|---|---|
| PT6728 | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-A 12V-Input Adjustable Integrated Switching Regulator |
| PT6728A | 功能描述:REGULATOR 1.5V 14A CU CASE HRZ RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT6720 标准包装:10 系列:PT4570 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:3.3A 电源（瓦） - 制造商系列:30W 电压 - 隔离:1.5kV（1500V） 特点:- 安装类型:表面贴装 封装/外壳:19-SIP SMD 模块 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包装:托盘 工作温度:-40°C ~ 85°C 效率:84% 电源（瓦特）- 最大:30W |
| PT6728C | 功能描述:REGULTR 1.5V 14A CU CASE HRZ SMD RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT6720 标准包装:10 系列:PT4570 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:3.3A 电源（瓦） - 制造商系列:30W 电压 - 隔离:1.5kV（1500V） 特点:- 安装类型:表面贴装 封装/外壳:19-SIP SMD 模块 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包装:托盘 工作温度:-40°C ~ 85°C 效率:84% 电源（瓦特）- 最大:30W |
| PT6728N | 功能描述:开关变换器、稳压器与控制器 1.5Vout 14A 12V-Inp CU Case Adj ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6729 | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-A 12V-Input Adjustable Integrated Switching Regulator |
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