- 您现在的位置：买卖IC网 > PDF目录22117 > LTC4244CGN (Linear Technology)IC CTRLR HOTSWAP PCI 20-SSOP PDF资料下载
参数资料
| 型号： | LTC4244CGN |
| 厂商： | Linear Technology |
| 文件页数： | 8/28页 |
| 文件大小： | 337K |
| 描述： | IC CTRLR HOTSWAP PCI 20-SSOP |
| 标准包装： | 55 |
| 类型： | 热交换控制器 |
| 应用： | CompactPCI? |
| 内部开关： | 无 |
| 电源电压： | 3.3V，5V，±12V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页当前第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
8
LTC4244/LTC4244-1
42441f
RESETOUT (Pin 10): Open-Drain Digital Output. Connect
the CPCI_LOCAL_RST# signal to the RESETOUT pin.
RESETOUT is the logical combination of the RESETIN and
PWRGD.
DRIVE (Pin 11): Precharge Base Drive Output. Provides
base drive for an external NPN emitter-follower that in turn
biases the PRECHARGE node.
PRECHARGE (Pin 12): Precharge Monitor Input. An inter-
nal error amplifier servos the DRIVE pin voltage to keep the
PRECHARGE node at 1V. See Applications Information for
generating voltages other than 1V. If not used, tie the
PRECHARGE pin to ground.
5V
IN
(Pin 13): 5V Supply Sense Input. An undervoltage
lockout circuit prevents the switches from turning on
when the voltage at the 5V
IN
pin is less than 4.25V.
5V
SENSE
(Pin 14): 5V Current Limit Sense. With a sense
resistor placed in the supply path between 5V
IN
and
5V
SENSE
, the GATE pin voltage will be adjusted to maintain
a constant 51mV across the sense resistor and a constant
current through the switch while the TIMER pin is low. A
foldback feature makes the current limit decrease as the
voltage at the 5V
OUT
pin approaches GND. When the
TIMER pin is high, the circuit breaker function is enabled.
If the voltage across the sense resistor exceeds 52mV, the
circuit breaker is tripped after a 25祍 time delay. In the
event of a short-circuit or large overcurrent transient
condition, the GATE pin voltage will be adjusted to main-
tain a constant 150mV across the sense resistor and a
constant current through the switch.
GATE (Pin 15): High Side Gate Drive for the External 3.3V
and 5V N-Channel Pass Transistors. An external series RC
network is required for current limit loop compensation
and setting the minimum ramp-up time. During power-up,
the slope of the voltage rise at the GATE is set by the 67礎
current source connected through a Schottky diode to
12V
IN
and the external capacitor connected to GND (C1 in
Figure 1) or by the 3.3V or 5V current limit and the bulk
capacitance in the 3.3V
OUT
or 5V
OUT
supply lines. During
power down, the slew rate of the GATE voltage is set by the
60礎 current source connected to GND and the external
GATE capacitor (C1 in Figure 1).
The voltage at the GATE pin will be modulated to maintain
a constant current when either the 5V or 3.3V supplies go
into current limit. In the event of an overcurrent fault, the
GATE pin is immediately pulled to GND.
3.3V
SENSE
(Pin 16): 3.3V Current Limit Sense. With a
sense resistor placed in the supply path between 3.3V
IN
and 3.3V
SENSE
, the GATE pin voltage will be adjusted to
maintain a constant 51mV across the sense resistor and a
constant current through the switch while the TIMER pin
is low. A foldback feature makes the current limit decrease
as the voltage at the 3.3V
OUT
pin approaches GND. When
the TIMER pin is high, the circuit breaker function is
enabled. If the voltage across the sense resistor exceeds
52mV, the circuit breaker is tripped after a 25祍 time delay.
In the event of a short-circuit or large overcurrent transient
condition, the GATE pin voltage will be adjusted to main-
tain a constant 150mV across the sense resistor and a
constant current through the switch.
If no 3.3V input supply is available, short the 3.3V
SENSE
pin
to the 5V
IN
pin.
U
U
PI FU CTIO S
相关PDF资料 |
PDF描述 |
|---|---|
| S103M47Z5UN65L0R | CAP CER 10000PF 1KV 20% RADIAL |
| VI-22Y-CW-F1 | CONVERTER MOD DC/DC 3.3V 66W |
| S103M47Z5UN63L0R | CAP CER 10000PF 1KV 20% RADIAL |
| R-78HB15-0.5 | CONV DC/DC 0.5A 15V OUT SIP VERT |
| EEC19DRAI | CONN EDGECARD 38POS R/A .100 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4244CGN#PBF | 功能描述:IC CTLR HOT SWAP PCI 20-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) |
| LTC4244CGN#TR | 功能描述:IC CTRLR HOT SWAP CPCI 20-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) |
| LTC4244CGN#TRPBF | 功能描述:IC CTRLR HOTSWAP PCI 20-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) |
| LTC4244CGN-1 | 制造商:Linear Technology 功能描述:Hot Swap Controller 13.5V/14.4V/-14.4V 20-Pin SSOP N |
| LTC4244CGN-1#PBF | 功能描述:IC CTRLR HOTSWAP PCI 20-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) |
发布紧急采购，3分钟左右您将得到回复。