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参数资料
| 型号： | L6911A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 3/7页 |
| 文件大小： | 50K |
| 代理商： | L6911A |
PIN FUNCTIONS
N
°
Name
Description
1
VSEN
Connected to the output voltage is able to manage overvoltage conditions and the PGOOD
signal.
2
OCSET
A resistor connected from this pin and the upper Mos Drain sets the current limit protection.
The internal 200
A current generator sinks a current from the drain through the external
resistor. The overcurrent threshold is due to the following equation:
IP
=
Iocs
Rocs
Rdson
3
SS
The soft start time is programmed connecting an external capacitor from this pin and GND.
The internal current generator forces through the capacitor 10
A. This pin can be used to
disable the device forcing a voltage lower than 0.4V.
4 - 8
VID0 - 4
Voltage Identification code pins. These input are open collector and TTL compatible. Are used
to program the output voltage as specified in Table 1 and to set the overvoltage and
powergood thresholds.
9
COMP
This pin is connected to the error amplifier output and is used to compensate the voltage
control feedback loop.
10
FB
This pin is connected to the error amplifier inverting input and is used to compensate the
voltage control feedback loop.
11
GND
All internal voltage reference are referred to this pin.
12
PGOOD
This pin is an open collector output and is pulled low if the output voltage is not within
±10%
of the programmed voltage. This pin is forced low if the ”11111” VID is set.
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.
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.
Do not connect VIN to 12V if VCC is 5V.
18
VCC
Device supply voltage. The operative supply voltage range is 4.5V 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.
VSEN
OCSET
SS
VID0
VID1
VID3
VID2
VID4
COMP
PGOOD
PHASE
UGATE
PGND
BOOT
LGATE
VCC
OVP
RT
1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
FB
GND
D98IN958
PIN CONNECTION
L6911A
3/7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6911B | 制造商:STMicroelectronics 功能描述: |
| L6911C | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6911CTR | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6911D | 功能描述:DC/DC 开关控制器 5-Bit Prog Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6911DTR | 功能描述:DC/DC 开关控制器 5-Bit Prog Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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