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参数资料
| 型号： | LT4220IGN |
| 厂商： | Linear Technology |
| 文件页数： | 11/16页 |
| 文件大小： | 259K |
| 描述： | IC CTLR HOTSWAP DUAL 16-SSOP |
| 标准包装： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 2.7 V ~ 16.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
11
LT4220
4220f
Initial Power-Up Sequence
After the power pins first make contact, transistors Q1 and
Q2 remain off. If the voltage at the ON
+
and ON
pins
exceed the turn-on threshold voltage, the internal voltage
on the V
CC
and V
EE
power pins exceed the undervoltage
lockout threshold, and the timer pin voltage is less than
1.24V, the gate drive to transistors Q1 and Q2 will be
turned on. The voltage on the GATE
+
and GATE
pins will
be regulated to control the inrush current if the voltage
across R
S
+
or R
S
exceeds the sense amplifier current
limit threshold. If supply tracking is enabled, each gate will
also be regulated to keep the magnitudes at the FB
+
and
FB
pins within 50mV of each other.
V
CC
ON
+
C6
1礔
C5
1礔
R2
R1
R4
R3
V
EE
V
CC
FAULT
TIMER
GND
ON
PWRGD
FB
+
R10
R9
V
OUT
+
R12
R11
4220 F07
V
OUT
R7
10&
FB
SENSE
+
R
S
+
R
S
GATE
+
R6
1k
R5
10&
C1
10nF
R8
1k
C2
10nF
C3
100nF
Q1
V
EE
SENSE
SENSEK
LT4220
GATE
Q2
CL2
CL1
Z2*
R14
10&
C4
100nF
Z1*
R13
10&
CONNECT FOR
AUTO RESTART
BACKPLANE
CONNECTOR
STAGGERED
PCB EDGE
CONNECTOR
V
IN
+
V
IN
GND MUST CONNECT FIRST
GND
*TRANSIENT VOLTAGE SUPPRESSOR
ESD
CONTROL
TRACK
7
10
13
5
4
3
2
1
6
9
8
11
12
16
15
14
R16, 20k
C7
C8
+
+
D1
IN4001
D2
IN4001
Figure 7. Hot Swap Controller on Daughter Board with Tracking Disabled
APPLICATIO S I FOR ATIO
U
U
U
live insertion. Resistive dividers R1, R2 and R3, R4 pro-
vide undervoltage sensing. Resistor dividers R9, R10 and
R11, R12 provide a power good signal and control output
voltage tracking when TRACK is enabled.
Internal Supply Diodes
The LT4220 contains two internal diodes which clamp V
EE
and V
CC
with respect to GND in the event either supply pin
is floating. V
EE
is clamped one diode above GND and V
CC
is clamped one diode below GND. The current through
these diodes are designed to handle 10mA internal device
current and should not be used for high load current
conditions.
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| LT4220IGN#PBF | 功能描述:IC CTLR HOTSWAP DUAL 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LT4220IGN#TR | 功能描述:IC CTLR HOTSWAP DUAL 16-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LT4220IGN#TRPBF | 功能描述:IC CTLR HOTSWAP DUAL 16-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) |
| LT4239 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TRANSISTOR | BJT | NPN | TO-129 |
| LT424LF | 制造商:EDSYN 功能描述:LONER Spade Soldering Tip High-Temperature Rated for Lead-Free Process W: .06 i |
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