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參數(shù)資料
| 型號： | L6911E |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數(shù)： | 31/34頁 |
| 文件大?。?/td> | 558K |
| 代理商： | L6911E |
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Pin settings
L6911E
6/34
11
GND
All the internal references are referred to this pin. Connect it to the PCB signal
ground.
12
PGOOD
This pin is an open collector output and is pulled low if the output voltage is not
within the above specified threshlds.
If not used may be left floating.
13
PHASE
This pin is connected to the source of the upper mosfet and provides the return
path for the high side driver. This pin monitors the drop across the upper mosfet
for the current limit.
14
UGATE
High side gate driver output.
15
BOOT
Bootstrap capacitor pin. Through this pin is supplied the high side driver and
the upper mosfet. Connect through a capacitor to the PHASE pin and through
a diode to Vcc (catode vs boot).
16
PGND
Power ground pin. This pin has to be connected closely to the low side mosfet
source in order to reduce the noise injection into the device
17
LGATE
This pin is the lower mosfet gate driver output
18
VCC
Device supply voltage. The operative supply voltage range is from 4.5 to 12V.
DO NOT CONNECT VIN to 12V if VCC IS 5V.
19
OVP
Over voltage protection. If the output voltage reach the 15% above the
programmed voltage this pin is driven high and can be used to drive an
external SCR that crowbar the supply voltage.
If not used, it may be left floating.
20
RT
Oscillator switching frequency pin. Connecting an external resistor from this pin
to GND, the external frequency is increased according to the equation:
Connecting a resistor from this pin to Vcc (12V), the switching frequency is
reduced according to the equation:
If the pin is not connected, the switching frequency is 200KHz.
The voltage at this pin is fixed at 1.23V. Forcing a 50
A current into this pin, the
built in oscillator stops to switch.
Table 2. Pin description (continued)
N°
Name
Description
f
S
200kHz
510
6
R
T k
()
--------------------
+
=
f
S
200kHz
410
7
R
T k
()
--------------------
–
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6911ETR | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6911E_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5-Bit programmable step down controller with synchronous rectification |
| L6911ETR | 功能描述:DC/DC 開關(guān)控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6912-2 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG |
| L6913-1 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,1/BG |
| L6913-2 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG |
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