- 您现在的位置：买卖IC网 > PDF目录179919 > LTC4261CUFD-2#PBF (LINEAR TECHNOLOGY CORP) Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring; Package: QFN; No of Pins: 24; Temperature Range: 0°C to +70°C PDF资料下载
参数资料
| 型号： | LTC4261CUFD-2#PBF |
| 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： | 33/34页 |
| 文件大小： | 357K |
| 代理商： | LTC4261CUFD-2#PBF |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页当前第33页第34页
LTC4261/LTC4261-2
8
42612fc
ADIN (Pin 23/Pin 16): ADC Input. A voltage between 0V
and 2.56V applied to this pin is measured by the on-chip
ADC. Tie to VEE if unused.
ADIN2 (Pin 10/NA): Second ADC Input. Not available on
QFN package.
ADR0, ADR1 (Pins 24, 25/Pins 17, 18): Serial Bus Ad-
dress Inputs. Tying these pins to VEE, OPEN or INTVCC
configures one of nine possible addresses. See Table 1
in Applications Information.
ALERT (Pin 3/Pin 24): Fault Alert Output. Open-drain logic
output that pulls to VEEwhenafaultoccurstoalertthehost
controller. A fault alert is enabled by the ALERT register.
See Applications Information. Connect to VEE if unused.
DRAIN (Pin 16/Pin 11): Drain Sense Input. Connect an
external1Mresistorbetweenthispinandthedrainterminal
(VOUT) of the N-channel FET. When the DRAIN pin volt-
age is less than 1.77V and the GATE pin voltage is above
VZ – 1.2V the power good outputs are asserted after a
delay. The voltage at this pin is internally clamped to 4V.
EN (Pin 26/Pin 19): Device Enable Input. Pull low to enable
the N-channel FET to turn-on after a start-up debounce
delay set by the TMR pin. When this pin is pulled high, the
FET is off. Transitions on this pin will be recorded in the
FAULT register. A high-to-low transition activates the logic
to read the state of the ON pin and clear faults. Requires
external pull-up. Debouncing with an external capacitor
is recommended when used to monitor board present.
Connect to VEE if unused.
Exposed Pad (Pin 25, QFN Only): Exposed Pad may be
left open or connected to device ground (VEE).
FLTIN (Pin 22/NA): General Purpose Fault Input. If this
pin pulls low, the FAULT register bit B7 is latched to “1.”
This pin is used to sense an external fault condition and
its status does not affect the FET control functions of the
LTC4261. Not available on the QFN package. Connect to
INTVCC if unused.
GATE (Pin 15/Pin 10): N-Channel FET Gate Drive Output.
This pin is pulled up by an internal current source IGATE
(11.5A when the SS pin reaches its clamping voltage).
GATE stays low until VIN and INTVCC cross the UVLO
thresholds, UV and OV conditions are satisified and an
adjustable timer delay expires. During turn-off, caused by
faults or undervoltage lockout (VIN or INTVCC), a 110mA
pull-down current between GATE and VEE is activated.
INTVCC (Pin 7/Pin 4): Low Voltage (5V) Supply Output.
This is the output of the internal linear regulator with an
internal UVLO threshold of 4.25V. This voltage powers up
the data converter and logic control circuitry. Bypass this
pin with a 0.1F capacitor to VEE.
ON (Pin 2/Pin 23): On Control Input. A rising edge turns
on the external N-channel FET while a falling edge turns it
off. This pin is also used to configure the state of the FET
ON register bit D3 in the CONTROL register (and hence
the external FET) at power-up. For example if the ON pin
is tied high, then the register bit D3 goes high one timer
cycleafterpower-up.Likewise,iftheONpinistiedlow,then
the device remains off after power-up until the register bit
D3 is set high using the I2C bus. A high-to-low transition
on this pin clears faults.
OV (Pin 11/Pin 7): Overvoltage Detection Input. Connect
this pin to an external resistive divider from VEE. If the
voltage at the pin rises above 1.77V, the N-channel FET is
turned off. The overvoltage condition does not affect the
status of the power good outputs. On the QFN package,
this pin is also measured by the on-chip ADC. Connect
to VEE if unused.
PG(Pin27/Pin20):PowerGoodStatusOutput.Thisopen-
drain pin pulls low and stays latched a timer delay after
the FET is on (when GATE reaches VZ – 1.2V and DRAIN
is within 1.77V of VEE). The power good output is reset
in all GATE pull-down events except an overvoltage fault.
Connect to VEE if unused.
PIN FUNCTIONS (SSOP/QFN)
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4261CUFD-2#TRPBF | Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring; Package: QFN; No of Pins: 24; Temperature Range: 0°C to +70°C |
| LTC4261IGN#PBF | Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring; Package: SSOP; No of Pins: 28; Temperature Range: -40°C to +85°C |
| LTC4261IGN#TRPBF | Negative Voltage Hot Swap Controllers with ADC and I2C Monitoring; Package: SSOP; No of Pins: 28; Temperature Range: -40°C to +85°C |
| LTC4263CDE#PBF | Single IEEE 802.3af Compliant PSE Controller with Internal Switch; Package: DFN; No of Pins: 14; Temperature Range: 0°C to +70°C |
| LTE-4218 | 5 mm, 1 ELEMENT, INFRARED LED, 940 nm |
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 |
发布紧急采购，3分钟左右您将得到回复。