参数资料
型号: LT4220CGN
厂商: Linear Technology
文件页数: 11/16页
文件大小: 259K
描述: IC CNTRLR DUAL HOT SWAP 16-SSOP
标准包装: 100
类型: 热交换控制器
应用: 通用
内部开关:
电源电压: 2.7 V ~ 16.5 V
工作温度: 0°C ~ 70°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.
相关PDF资料
PDF描述
LTC3705IGN#PBF IC CTRLR OCP 16SSOP
ABC35DRTI-S734 CONN EDGECARD 70POS DIP .100 SLD
RSA35DTKT CONN EDGECARD 70POS DIP .125 SLD
LCMXO640C-4FTN256C IC PLD 640LUTS 159I/O 256FTBGA
TAP475M016BRS CAP TANT 4.7UF 16V 20% RADIAL
相关代理商/技术参数
参数描述
LT4220CGN#PBF 功能描述:IC CNTRLR DUAL HOT SWAP 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统,AdvancedTCA ? 系统,高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽) 供应商设备封装:10-MSOP 包装:管件
LT4220CGN#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
LT4220CGN#TRPBF 功能描述:IC CNTRLR DUAL HOT SWAP 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
LT4220CGNPBF 制造商:Linear Technology 功能描述:Dual Supply Hot Swap Controller SSOP16
LT4220IGN 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