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参数资料
| 型号： | LM10010SDX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO10 |
| 封装： | 3 X 3 MM, 0.50 MM PITCH, LLP-10 |
| 文件页数： | 10/12页 |
| 文件大小： | 308K |
| 代理商： | LM10010SDX |
Block Diagram
30156810
FIGURE 2. LM10010 Block Diagram
Functional Description
GENERAL
The LM10010 is a precision current DAC used for controlling
any point of load regulator with an adjustable resistor feed-
back network. Four communication lines are used to write to
a 6-bit IDAC value. The output of the IDAC is used to send
current to the feedback node of a regulator, adjusting the out-
put voltage. With this method, it is possible to precisely control
the output voltage of the regulator.
An enable pin (EN) is provided to allow for a reduced quies-
cent current when not in use. Also, the VDD line is monitored
so that an under-voltage event will shut down the device.
The device is available in a 10-pad No-Pullback Leadless
Leadframe Package (LLP-10). The LM10010 can be used in
numerous applications with regulators from 3.0V to 5.5V sup-
plies. A block diagram of the LM10010 is shown in Figure 2
above.
THEORY OF OPERATION
The LM10010 can be thought of as a D/A converter, convert-
ing the VID communication to analog outputs. In this device,
the output is a current DAC (IDAC_OUT), which is connected
to the feedback node of a slave regulator. Therefore, all VID
data words are decoded into a 6-bit current DAC output. The
impedance of the feedback node at DC appears as the top
feedback resistor. This is because the control loop of the slave
regulator effectively maintains a constant current/voltage
across the bottom feedback resistor, and creates low
impedance at the VOUT node. Therefore, as more current is
sourced into the feedback node, the more the output voltage
is reduced. See Figure 3.
7
www.national.com
LM10010
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM10010SDX/NOPB | 功能描述:其他电源管理 RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| LM10011 | 制造商:TI 制造商全称:Texas Instruments 功能描述:6/4-Bit VID Programmable Current DAC for Point of Load Regulators with Adjustable Start-Up Current |
| LM10011EVM | 制造商:Texas Instruments 功能描述:LM10011EVM - Boxed Product (Development Kits) 制造商:Texas Instruments 功能描述:EVALUATION MODULE LM10011 |
| LM10011SD/NOPB | 功能描述:数模转换器- DAC 4/6B VID VTG Programmer RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| LM10011SDNOPB | 制造商:National Semiconductor 功能描述:LM10011SDNOPB |
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