參數(shù)資料
型號(hào)： L6711TR
廠商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48
封裝： 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁(yè)數(shù)： 15/50頁(yè)
文件大?。?/td> 679K
代理商： L6711TR
Obsolete
Product(s)
- Obsolete
Product(s)
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.
相關(guān)PDF資料
PDF描述
L6711 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48
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L6712AD 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 2-Ph Interleaved RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
L6712ADTR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 2-Ph Interleaved RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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