- 您现在的位置：买卖IC网 > PDF目录67758 > LTC2951IDDB-1#TRMPBF (LINEAR TECHNOLOGY CORP) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 PDF资料下载
参数资料
| 型号： | LTC2951IDDB-1#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WEED-1, DFN-8 |
| 文件页数： | 5/16页 |
| 文件大小： | 213K |
| 代理商： | LTC2951IDDB-1#TRMPBF |
LTC2951-1/LTC2951-2
13
295112fa
Power Path Switching
The EN open drain output of the LTC2951-2 is designed to
switch on/off an external power PFET. This allows a user
to connect/disconnect a power supply (or battery) to its
load by toggling the PB pin. Figure 7 shows the LTC2951-2
controlling a two cell Li-Ion battery application. The INT
and KILL pins are connected to the output of the PFET
through a resistor divider. The KILL pin serves as a voltage
monitor. When VOUT drops below 6V, the EN pin is open
circuited 30s later.
VOUT
R1
909k
1%
R4
100k
1%
C3*
0.1
F
2951 F07
C4
0.1
F
CERAMIC
*OPTIONAL
OPEN DRAIN OUTPUT
VTH = 0.6V INPUT
R5
100K
M1
+
4.2V
SINGLE CELL
Li-Ion BATTERY
+
4.2V
SINGLE CELL
Li-Ion BATTERY
OPTIONAL GLITCH
FILTER CAPACITOR
VOUT,TRIP POINT = 6V
PB
EN
INT
KILL
LTC2951-2
GND
OFFT
VIN
CKILLT*
0.033
F
COFFT*
0.033
F
KILLT
PB
VIN
LTC2951-1
GND
R6
5k
2951 F08
TRACE
CAPACITANCE
PARASITICS
C5
0.1
F
DETAILS OMITTED
FOR CLARITY
TRACE
INDUCTANCE
NOISE
EN
INT
KILL
OFFT
VIN
KILLT
Figure 7. Power Path Control with 6V Under Voltage Detect
Figure 8. Filtering for Noisy PB Traces
PB Pin in a Noisy Environment
The rugged PB pin is designed to operate in noisy envi-
ronments. Transients below ground (> –6V) and above VIN
(<33V) will not damage the rugged PB pin. Additionally,
the PB pin can withstand ESD HBM strikes up to ±10kV.
In order to keep external noise from coupling inside the
LTC2951, place an R-C network close to the PB pin. A
5k resistor and a 0.1F capacitor should sufce for most
noisy applications (see Figure 8).
TYPICAL APPLICATIO S
U
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3105EDD#PBF | SWITCHING REGULATOR, PDSO10 |
| LTC3105EMS#PBF | SWITCHING REGULATOR, PDSO12 |
| LTC3105EMS#TRPBF | SWITCHING REGULATOR, PDSO12 |
| LTC3240EDC-3.3 | 0.45 A SWITCHED CAPACITOR REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO6 |
| LTC3459EDCB#PBF | 0.09 A SWITCHING REGULATOR, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2951IDDB-2#TRMPBF | 功能描述:IC PUSH BUTTON ON/OFF CTRLR 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LTC2951IDDB-2#TRPBF | 功能描述:IC PUSH BUTTON ON/OFF CTRLR 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LTC2951ITS8-1 | 制造商:Linear Technology 功能描述:Push Button Controller 8-Pin TSOT-23 |
| LTC2951ITS8-1#PBF | 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Cut Tape Basic Push Button On/Off Controller (Adjustabl |
| LTC2951ITS8-1#TRM | 制造商:Linear Technology 功能描述:Push Button Controller 8-Pin TSOT-23 T/R |
发布紧急采购，3分钟左右您将得到回复。