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参数资料
| 型号： | L6711TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, TQFP-48 |
| 文件页数： | 15/50页 |
| 文件大小： | 679K |
| 代理商： | L6711TR |
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DAC Selection
L6711
22/50
8
DAC Selection
The device embeds a selectable DAC that allows the output voltage to have a tolerance of
±0.5% (0.6% for Hammer DAC) recovering from offsets and manufacturing variations. The
VID_SEL pin selects the DAC table used to program the reference for the regulation as
shown in Table .
VID pins are inputs of an internal DAC that is realized by means of a series of resistors
providing a partition of the internal voltage reference. The VID code drives a multiplexer that
selects a voltage on a precise point of the divider. The DAC output is delivered to an
amplifier obtaining the voltage reference (i.e. the set-point of the error amplifier, VPROG).
Internal pull-ups are provided (realized with a 5
A current generator up to 3V Typ); in this
way, to program a logic "1" it is enough to leave the pin floating, while to program a logic "0"
it is enough to short the pin to SGND.
Programming the "11111x" code (NOCPU, VID5 is irrelevant), the device shuts down: all
mosfets are turned OFF and SS_END is shorted to SGND. Removing the code causes the
device to restart.
The voltage identification (VID) pin configuration also sets the Over / Under Voltage
protection (OVP/UVP) thresholds.
Table 7.
DAC Selection
VID_SEL
Selected DAC
OPEN
VRM / VRD 10.x DAC.
Output voltage ranges from 0.8185V to 1.5810V with 12.5mV steps (See Table 5).
Since the VIDx pins program the maximum output voltage, according to VRD 10.x
specs, the device automatically regulates with –19mV offset avoiding use of any external
component to lower the regulated voltage.
Since the -19mV offset is programmed during the production stage, no further error is
introduced to generate the offset since it is automatically recovered during the trimming
stage.
SGND
VID5
Hammer DAC
OPEN
Output voltage ranges from 0.800V to 1.550V with 25mV steps (See Table 6).
SGND
Output voltage ranges from 0.825V to 1.575V with 25mV steps (See Table 6).
Since the +25mV offset is programmed during the production stage, no further
error is introduced to generate the offset since it is automatically recovered
during the trimming stage.
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PDF描述 |
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| L6711 | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6712 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712_05 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712A | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712AD | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved 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 |
| L6712ADTR | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved 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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