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参数资料
| 型号： | LR645LG |
| 厂商： | SUPERTEX INC |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | High Input Voltage SMPS Start-up / Linear Regulator |
| 中文描述： | 8 V-12 V ADJUSTABLE POSITIVE REGULATOR, PDSO8 |
| 封装： | 4.90 X 3.90 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, MS-012AA, SOIC-8 |
| 文件页数： | 1/4页 |
| 文件大小： | 322K |
| 代理商： | LR645LG |
LR645
General Description
The Supertex LR6 is a high input voltage, low output current
linear regulator. It has a 3-terminal fixed output voltage version
available in TO-92, TO-220 and SOT-89 packages as well as an
adjustable voltage version available in 8 pin SOIC package. The
3-terminal version functions like any other low voltage 3-terminal
regulator except it allows the use of much higher input voltages.
When used in a SMPS start-up circuit, it eliminates the need for
large power resistors. In this application, current is drawn from
the high voltage line only during start-up. Only leakage current
flows after start-up thereby reducing the continuous power
dissipation to a few milliwatts.
The adjustable voltage version allows trimming of the output
voltage from 8V to 12V. This version can also be connected to an
external depletion mode MOSFET for increased output current.
When used in conjunction with Supertex depletion mode MOSFET
DN2540N5, up to a 150mA is achieved.
Max. Input Voltage
TO-92
TO-243AA*
TO-220
SO-8
Die
450V
LR645N3
LR645N8
LR645N5
LR645LG LR645ND
*Same as SOT-89. Product supplied on 2000 piece carrier tape reels.
Features
Accepts inputs from 15V to 450V
Ordering Information
Compatible with industry standard PWM ICs.
See application note AN-H28.
Output currents up to 3mA continuous, 30mA peak
Supply current typically 50
μ
A
Line regulation typically 0.1mV/V
Output can be trimmed from 8.0V to 12V
Output current can be increased to 150mA with external FET
High Input Voltage
SMPS Start-up / Linear Regulator
(continued on page 14-3)
Absolute Maximum Ratings
Input Voltage
450V
Output Voltage
15.5V
Operating and Storage Temperature
–55
°
C to +150
°
C
Soldering Temperature*
300
°
C
*Distance of 1.6mm from case for 10 seconds
Applications
Off-line SMPS startup circuits (pulse loads)
Low power off-line regulators
Regulators for noisy inputs
Pin Configuration
+V
IN
1
GND
V
OUT
3
Trim
Gate
TO-92
2
—
—
TO-243AA
1
2, TAB
3
—
—
TO-220
1
2, TAB
3
—
—
P-DIP
1
3
4
5
7
SO-8
5
4
3
2
1
TO-243AA
(SOT-89)
3
2
1
TAB
1 2 3
TO-92
123
TO-220
TAB
Caution
The LR6 does NOT provide galvanic isolation.
When
operated from an AC line, potentially lethal voltages can be
present on the IC. Adequate means of protecting the end
user from such voltages must be provided by the circuit
developer.
For detailed circuit and application information, please refer
to application note AN-H28.
Order Number / Package
Product marking for TO-243AA:
LR6
where
= 2-week alpha date code
11/12/01
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
相关PDF资料 |
PDF描述 |
|---|---|
| LR645N3 | High Input Voltage SMPS Start-up / Linear Regulator |
| LR645N5 | High Input Voltage SMPS Start-up / Linear Regulator |
| LR645N8 | High Input Voltage SMPS Start-up / Linear Regulator |
| LR645ND | High Input Voltage SMPS Start-up / Linear Regulator |
| LR745 | High Input Voltage SMPS Start-up Circuit(最大输入电压450V，开关模式电源（SMPS）启动电路) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LR645LG-G | 功能描述:线性稳压器 - 标准 Fixed/Adj Hi In V RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| LR645LG-P031 | 制造商:Supertex Inc 功能描述:Standard Regulator Pos 8V to 12V 0.03A 8-Pin SOIC N T/R |
| LR645N3 | 功能描述:线性稳压器 - 标准 Fixed/Adj Hi In V RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| LR645N3-G | 功能描述:线性稳压器 - 标准 Fixed/Adj Hi In V RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| LR645N3-G P002 | 制造商:Supertex Inc 功能描述:Linear Regulator IC |
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