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参数资料
| 型号： | L6590AN |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 0.7 A SWITCHING REGULATOR, 74 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封装： | MINI, DIP-8 |
| 文件页数： | 12/19页 |
| 文件大小： | 289K |
| 代理商： | L6590AN |
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L6590A
2/19
DESCRIPTION (continued)
The MOSFET is source-grounded, thus it is possible
to build flyback, boost and forward converters.
The device is meant to work with secondary feed-
back for tight tolerance of the regulated output volt-
age.
The internal fixed oscillator frequency and the inte-
grated non dissipative start-up generator minimize
the external component count and power consump-
tion.
The device is equipped with a standby function that
automatically reduces the oscillator frequency from
65 to 22 kHz under light load conditions to enhance
efficiency (Pin <1W @ Pout = 0.5W with wide range
mains).
Internal protections like cycle-by-cycle current limit-
ing, latched output overvoltage protection, mains un-
dervoltage
protection
and
thermal
shutdown
generate a 'robust' design solution.
The IC uses a special leadframe with the ground pins
(6, 7 and 8) internally connected in order for heat to
be easily removed from the silicon die. An heatsink
can then be realized by simply making provision of
few cm2 of copper on the PCB. Furthermore, the pin
close to the high-voltage one is not connected to
ease compliance with safety distances on the PCB.
BLOCK DIAGRAM
PIN CONNECTIONS (Top view)
SUPPLY
&UVLO
OVER
VOLTAGE
OVER
CURRENT
+
-
+
-
2.5V
+
-
DRAIN
(1)
VCC
(3)
BOK
(5)
COMP
(4)
GND
(6,7,8)
VREF
1mA
BROWNOUT
PWM
STANDBY
START-UP
OSC
65/22 kHz
THERMAL
S.DOWN
BOK
DRAIN
N.C.
Vcc
COMP
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6590D | 功能描述:开关变换器、稳压器与控制器 700 Volt Monolithic 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 |
| L6590D013TR | 功能描述:开关变换器、稳压器与控制器 700 Volt Monolithic 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 |
| L6590ED | 功能描述:功率因数校正 IC STEP DOWN SWITCH REG RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| L6590ED013TR | 功能描述:功率因数校正 IC STEP DOWN SWITCH REG RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| L6590N | 功能描述:开关变换器、稳压器与控制器 700 Volt Monolithic 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 |
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