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參數(shù)資料
| 型號： | L6788A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 電源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| 封裝： | 6 X 6 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFN-40 |
| 文件頁數(shù)： | 15/18頁 |
| 文件大小： | 330K |
| 代理商： | L6788A |
Pins description and connection diagram
L6788A
6/18
Doc ID 15341 Rev 2
6
VR_HOT/
EN
Voltage regulator HOT / enable pin. Internally pulled up by 10 A (typ) to 3.3 V.
Multifunction pin to enable/disable the system (input-signal) and to provide the
information about the warning temperature (output-signal).
Forced low, the device stops operations with all MOSFETs OFF: all the latched
protections are disabled. Removing the short on VR_HOT/EN pin, the device
starts-up implementing soft-start and the voltage at the pin is clamped by the
device at 1.5 V (typ). When a warning temperature is detected the device
leaves the pin floating.
Thermal monitoring enabled if Vcc > UVLOVCC (See “thermal monitoring”
section for details).
VR_HOT/EN pin is set free when:
Either TCS pin voltage overcomes the warning threshold voltage (see TCS
pin for details).
Or Tj_IC Die temperature overcomes the die warning temperature (T_HOT)
Where T_HOT=T_Shutdown-T_Delta
Use a pull-up resistor in the range of 10 k
Ω30 kΩ when VR_HOT/EN pin is
directly pulled up to 3.3 V. (see VR_HOT/EN pin voltage Electrical
Characteristic table).
Cycle this pin to recover latch from protections.
7
VID1
Voltage identification pins. Internally pulled low by 10 A.
They allow programming output voltage from the 4-level “power play table” in
PVID mode.
8VID0
9IREF
Current reference pin.
Internally fixed at 1.240 V, connecting a RIREF = 12.4 k
Ω (+/-0.1%) resistor vs.
AGND allows setting 100 A current that is mirrored into R1, R2, R3 pins in
order to program the three power play table levels voltage. See “power play
table level” section for details.
10
R3
Default “power play table” voltage setting pins.
The device sources from each Rx pin the same constant current sourced from
the IREF pin (
Internally mirrored). As a consequence the Voltage between Rx pin and AGND
is given by the following relationship: VRx= IREF * Rx=100 A*Rx, where IREF
is the current programmed on IREF pin (100 A). As soon as the ENABLE is
released the device reads the Rx pin voltage and it stores these value. As a
consequence if the power play table is re-written by serial BUS the analog
values can not be recovered (voltage fixed by Rx resistor). See “power play
table level” section for details.
11
R2
12
R1
13
CS1-
Channel 1 current sense negative input.
Connect through a Rg resistor to the output-side of the channel 1 inductor.
14
CS1+
Channel 1 current sense positive input.
Connect through an R-C filter to the phase-side of the channel 1 inductor.
15
CS2-
Channel 2 current sense negative input.
Connect through a Rg resistor to the output-side of the channel 2 inductor.
Still connect to VOUT through Rg resistor when using 1-phase operation.
Table 2.
Pin description (continued)
Pin n°
Name
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6910A | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6910GTR | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6917BD | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO28 |
| L6917BDTR | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO28 |
| L6917D | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6788ATR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 STEP DOWN SWITCH REG 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 |
| L67A/W | 制造商:Electro-Mech 功能描述: |
| L67G-FG | 制造商:Electro-Mech 功能描述: |
| L67O | 制造商:Electro-Mech 功能描述: |
| L67R-FG | 制造商:Electro-Mech 功能描述: |
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