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参数资料
| 型号： | LTC4261CUFD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring; Package: QFN; No of Pins: 24; Temperature Range: 0°C to +70°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| 封装： | 4 X 5 MM, LEAD FREE, PLASTIC, QFN-24 |
| 文件页数： | 6/34页 |
| 文件大小： | 357K |
| 代理商： | LTC4261CUFD#TRPBF |
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LTC4261/LTC4261-2
14
42612fc
22
1
6
5
28
27
4
3
VEE
R6
100k
RIN
8
× 240 IN SERIES
1/4W EACH
CVCC
0.1F
VEE
CIN
1F
MOC207
21
7
23
R8
7.5k
R7A
10k
R7B
10k
R9
5.1k
R7
100k
R24
5.1k
R23
1k
R22
1k
R17
100k
1%
Q11
2N5401
OUTPUT
SENSE
Q12
2N5401
R19
2.49k
1%
VEE
VOUT
R20
2.49k
1%
R18
100k
1%
R4
20k
R21
1k
5V
LUCENT
FLTR100V10
VIN+
–48V RTN OUTPUT
VIN– CASE
VOUT+
VOUT–
MICRO-
CONTROLLER
VDD
GND
SCL
SDA
ALERT
MBRM5100
CL
4000F
100V
0V TRANSIENT
RESEVOIR
CAPACITOR
RST
LUCENT
JW050A1-E
VIN+
VIN–
VEE
Q5
MOC207
ON/OFF
CASE
LTC2900
SUPPLY
MONITOR
VDD
RST
GND
VOUT+
VOUT–
RL
343
7
× 2.4k, 0805
EACH 28.7W
+
Q8
A
B
ANODE
VCC
Q3
HCPL-0300
GND
CATHODE
RL
VOUT
ANODE
VCC
Q4
Q6
Q7
42612 F02b
5V
PS9113
6N139
CATHODE
VO
VCC
GND
ANODE
CATHODE
VO
VCC
ANODE
CATHODE
GND
FLTIN
PGI
SCL
SDAI
PGIO
PG
SDAO
ALERT
LTC4261CGN
VIN
INTVCC
ADIN
Figure 2b. 200W AdvancedTCA Hot Swap Controller with Input/Output Monitoring
and Power Good Watchdog Using LTC4261 in I2C Mode (Part Two)
the voltage at VIN to 11.2V (VZ) and provides power to the
GATE driver. The data converter and logic control circuits
are powered by an internal linear regulator that derives
5V from the 11.2V supply. The 5V output is available at
the INTVCC pin for driving external circuits (up to 20mA
load current).
Bypass capacitors of 1F and 0.1F are recommended
at VIN and INTVCC, respectively. RIN should be chosen to
accommodate the maximum supply current requirement
of the LTC4261/LTC4261-2 (5mA) plus the supply current
required by any external devices driven by the VIN and
INTVCC pins at the minimum intended operation voltage.
RIN ≤
V48V(MIN) – VZ(MAX)
IIN(MAX) +IEXTERNAL
The maximum power dissipation in the resistor is:
PMAX =
V48V(MAX) – VZ(MIN)
(
)2
RIN
If the power dissipation is too high for a single resistor,
use multiple resistors in series or supply external loads
from a separate NPN buffer as illustrated in Figure 3.
Initial Start-Up and Inrush Control
SeveralconditionsmustbesatisfiedbeforetheFETturn-on
sequence is started. First the voltage at VIN must exceed
its 9V undervoltage lockout level. Next the internal supply
INTVCC must cross its 4.25V undervoltage lockout level.
This generates a 100s to 160s power-on-reset pulse
during which the FAULT register bits are cleared and the
CONTROL register bits are set or cleared as described in
the register section. After the power-on-reset pulse, the
voltages at the UVH, UVL and OV pins must satisfy UVH
> 2.56V, UVL > 2.291V and OV < 1.77V to indicate that
the input power is within the acceptable range and the EN
pin must be pulled low. All the above conditions must be
satisfied throughout the duration of the start-up debounce
delay that is set by an external capacitor (CTMR) connected
to the TMR pin. CTMR is charged with a pull-up current of
APPLICATIONS INFORMATION
RTN
100
BCP56
VIN OR
INTVCC
10.5V OR 4.3V
42612 F03
Figure 3. NPN Buffer Relieves RIN of Excessive Dissipation
when Supplying External Loads
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4261IGN | 功能描述:IC CTRLR HOTSWAP W/ADC 28-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4261IGN#PBF | 功能描述:IC CTRLR HOTSWAP W/ADC 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4261IGN#TR | 功能描述:IC CTRLR HOTSWAP W/ADC 28-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4261IGN#TRPBF | 功能描述:IC CTRLR HOTSWAP W/ADC 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4261IGN-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring |
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