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LTC1642IGN PDF预览

LTC1642IGN

更新时间: 2024-09-12 22:11:55
品牌 Logo 应用领域
凌特 - Linear 电源电路电源管理电路光电二极管控制器
页数 文件大小 规格书
12页 150K
描述
Hot Swap Controller

LTC1642IGN 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SSOP包装说明:SSOP, SSOP16,.25
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G16
JESD-609代码:e0长度:4.8895 mm
湿度敏感等级:1信道数量:1
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):235
电源:5 V认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Power Management Circuits
最大供电电流 (Isup):3 mA最大供电电压 (Vsup):16.5 V
最小供电电压 (Vsup):2.97 V标称供电电压 (Vsup):5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL处于峰值回流温度下的最长时间:20
宽度:3.899 mmBase Number Matches:1

LTC1642IGN 数据手册

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Fina l Ele c tric a l Sp e c ific a tio ns  
LTC1642  
Ho t Swa p Co ntro lle r  
Ma y 1999  
U
DESCRIPTIO  
FEATURES  
Single Channel Positive NFET Driver  
Programmable Undervoltage and Overvoltage  
Protection  
Foldback Current Limit  
Adjustable Current Limit Time-Out  
Latch Off or Automatic Retry on Current Fault  
Driver for SCR Crowbar on Overvoltage  
Programmable Reset Timer  
The LTC®1642 is a 16-pin Hot SwapTM controller that  
allows a board to be safely inserted and removed from a  
live backplane. Using an external N-channel pass transis-  
tor, the board supply voltage can be ramped up at a  
programmable rate. A high side switch driver controls the  
N-channel gate for supply voltages ranging from 2.97V to  
16.5V.  
TheSENSEpinallows foldbacklimitingoftheloadcurrent,  
with circuit breaker action after a programmable delay  
time. The delay allows the part to power-up in current  
limit. The CRWBR output can be used to trigger an SCR  
for crowbar load protection after a programmable delay if  
the input supply exceeds a programmable voltage. The  
RESET output can be used to generate a system reset with  
programmable delay when the supply voltage falls below  
a programmable voltage. The ON pin can be used to cycle  
the board power. The LTC1642 is available in the 16-pin  
SSOP package.  
Reference Output with Uncommitted Comparator  
V : 2.97V to 16.5V Normal Operation, Protected  
CC  
Against Surges to 33V.  
16-Pin SSOP Package  
U
APPLICATIO S  
Hot Board Insertion  
Electronic Circuit Breaker  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
R1  
0.010  
5%  
Q1  
FDR9410A  
12V  
AT 2.5A  
12V  
+
C7  
0.1µF  
C
R5  
110k  
1%  
LOAD  
R2  
100Ω  
5%  
R8  
330Ω  
5%  
R3  
107k  
1%  
C1  
0.047µF  
LATCH OFF: FLOAT FAULT  
16  
15  
14  
AUTOMATIC RETRY: TIE FAULT TO ON  
V
SENSE  
GATE  
CC  
5
POWER-GOOD = 11.4V  
RESET  
10  
4
7
COMPOUT  
ON  
FB  
1
Q3  
MCR  
12DC  
UNDERVOLTAGE = 10.8V  
CRWBR  
LTC1642  
D1  
R6  
12  
11  
13  
1N4148  
2.87k  
6
9
COMP  
Q2  
2N2222  
FAULT  
OV  
1%  
+
COMP  
R4  
13k  
1%  
OVERVOLTAGE = 13.2V  
REF  
R9  
220Ω  
5%  
R7  
11.3k  
GND  
BRK TMR  
2
C3  
0.33µF  
RST TMR  
C5  
0.1µF  
8
3
1%  
RESET TIME = 200ms  
C2  
C6  
0.01µF  
CURRENT LIMIT TIME = 20ms  
0.33µF  
1642 TA01  
CROWBAR TIME = 90µs  
R9 REQUIRED ONLY WITH SENSITIVE GATE SCRs,  
NOT NEEDED WITH MCR12  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofits circuits as describedhereinwillnotinfringeonexistingpatentrights.  
1

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