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| 型号： | LTC4230CGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 25/36页 |
| 文件大小： | 384K |
| 描述： | IC CONTRLLR HOT SWAP TRPL 20SSOP |
| 标准包装： | 55 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1.7 V ~ 16.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
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25
LTC4230
4230f
4
3
2
1
+
V
CCn
RESETn
SENSEn
ON
R5
15k
LTC4230*
GATEn
FBn
4230 F14a
15
14
12
C
TIMER
1礔
GND
TIMER
RESET
R4
36k
V
OUT
5V
5A
Q1
Si4410DY
R
SENSE
0.007&
C
OUT
R6
10k
Z1**
Z1: SMAJ10
*ADDITIONAL DETAILS
OMITTED FOR CLARITY
**OPTIONAL
R1
10&
C1
0.1礔
R2
10k
V
IN
5V
SHORT
LONG
V
CC
RESET
LONG
PCB EDGE
CONNECTOR
(MALE)
SHORT
BACKPLANE
CONNECTOR
(FEMALE)
4
3
2
1
+
V
CCn
SENSEn
ON
R2
100k
RESET
LTC4230*
GATEn
FBn
4230 F14b
15
14
12
C
TIMER
1礔
R3
10k
GND
TIMER
RESETn
V
OUT
5V
5A
Q1
Si4410DY
R
SENSE
0.007&
C
OUT
R1
36k
R4
10k
R5
10k
PCB
CONNECTION
SENSE
R
X
10&
C
X
0.1礔
Z1**
V
CC
5V
SHORT
LONG
SHORT
PCB EDGE
CONNECTOR
(MALE)
LONG
SHORT
BACKPLANE
CONNECTOR
(FEMALE)
Q2
R7
15k
Z1: SMAJ10
*ADDITIONAL DETAILS
OMITTED FOR CLARITY
**OPTIONAL
(14a) Hot Swap Controller On Daughter Board
(14b) Hot Swap Controller on Backplane
Figure 14. Staggered Pin Connections
PCB CONNECTION SENSE
There are a number of ways to use the LTC4230s ON pin
to detect whether the printed circuit board has been fully
seated in the backplane before the LTC4230 commences
a start-up cycle.
The first example is shown in the schematic on the front
page of this data sheet. In this case, the LTC4230 is
mounted on the PCB and a 10k resistive divider is con-
nected to the ON pin. On the edge connector, R1 is wired
to a short pin. Until the connectors are fully mated, the ON
pin is held low, keeping the LTC4230 in an OFF state. Once
the connectors are mated, the resistive divider is
connected to V
CC1
, V
ON
> 1.314V and the LTC4230 begins
a start-up cycle.
In Figure 14a, an LTC4230 is illustrated in a basic configu-
ration on a PCB daughter card. The ON pin is connected
directly to V
CC
on the backplane once the card is seated
into the backplane. R2 is provided to bleed off any potential
static charge which might exist on the backplane, the
connector or during card installation.
A third example is shown in Figure 14b where the LTC4230
is mounted on the backplane. In this example, a 2N2222
transistor and a pair of resistors (R4, R5) form the PCB
connection sense circuit. With the card out of the chassis,
Q2s base is biased to V
CC
through R5, biasing Q2 on and
driving the LTC4230s ON pin low. The base of Q2 is also
wired to a socket on the backplane connector. When a card
is firmly seated into the backplane, the base of Q2 is then
grounded through a short pin connection on the card. Q2
is biased off, the LTC4230s ON pin is pulled-up to V
CC
and
a start-up cycle begins.
APPLICATIO S I FOR ATIO
U
U
U
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| LTC4230IGN | 功能描述:IC CONTRLLR HOT SWAP TRPL 20SSOP 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) |
| LTC4230IGN#PBF | 功能描述:IC CONTRLLR HOT SWAP TRPL 20SSOP 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) |
| LTC4230IGN#TR | 功能描述:IC CONTRLLR HOT SWAP TRPL 20SSOP 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) |
| LTC4230IGN#TRPBF | 功能描述:IC CONTRLLR HOT SWAP TRPL 20SSOP 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) |
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