数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

LTC1644IGN 数据表(PDF) 10 Page - Linear Technology

部件名 LTC1644IGN
功能描述  CompactPCI Bus Hot Swap Controller
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1644IGN 数据表(HTML) 10 Page - Linear Technology

Back Button LTC1644IGN Datasheet HTML 6Page - Linear Technology LTC1644IGN Datasheet HTML 7Page - Linear Technology LTC1644IGN Datasheet HTML 8Page - Linear Technology LTC1644IGN Datasheet HTML 9Page - Linear Technology LTC1644IGN Datasheet HTML 10Page - Linear Technology LTC1644IGN Datasheet HTML 11Page - Linear Technology LTC1644IGN Datasheet HTML 12Page - Linear Technology LTC1644IGN Datasheet HTML 13Page - Linear Technology LTC1644IGN Datasheet HTML 14Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 24 page
background image
LTC1644
10
1644f
BLOCK DIAGRA
When the TIMER pin is high, the circuit breaker function is
enabled. If the voltage across the sense resistor exceeds
55mV but is less than 150mV, the circuit breaker is tripped
after a 45
µs time delay. In the event the sense resistor
voltage exceeds 150mV, the circuit breaker trips immedi-
ately and the chip latches off. To disable the current limit,
3VSENSE and 3VIN can be shorted together.
3VIN (Pin 17): 3.3V Supply Sense Input. An undervoltage
lockout circuit prevents the switches from turning on
when the voltage at the 3VIN pin is less than 2.48V. If no
3.3V input supply is available, connect two series diodes
between 5VIN and 3VIN (tie anode of first diode to 5VIN and
cathode of second diode to 3VIN, see Figure 11).
PI FU CTIO S
3VOUT (Pin 18): Analog Input used to monitor the 3.3V
output supply voltage. The PWRGD pin cannot pull low
until the 3VOUT pin voltage exceeds 2.9V. If no 3.3V input
supply is available, tie the 3VOUT pin to the 5VOUT pin.
VEEOUT (Pin 19): –12V Supply Output. A 1Ω switch is
connected between VEEIN and VEEOUT. VEEOUT must ex-
ceed –10.5V before the PWRGD pin pulls low unless the
VEE PWRGD function is disabled by grounding the VEEIN
pin.
12VOUT (Pin 20): 12V Supply Output. A 0.5Ω switch is
connected between 12VIN and 12VOUT. 12VOUT must
exceed 11.1V before the PWRGD pin can pull low.
Q6
VEEIN
2
TIMER
4
VEEOUT
19
3VOUT
18
5VOUT
3
–
+
+–
Q9
NOTE: V12VIN – VTIMER < 1V = TIMER HI, V12VIN – VTIMER > 1V = TIMER LOW
Q8
Q2
Q3
225
µA
65
µA
GATE
5VOUT
TIMER
51mV, TIMER LO
150mV, TIMER HI
55mV
12VIN
15
5VSENSE
14
12VIN
1
12VOUT
20
5VIN
13
–
+
+–
+–
2.5V
UVL
8.3V
UVL
–
+
+–
3VOUT
55mV
CP3
REF
3VSENSE
16
3VIN
17
RESETOUT
10
–
+
–
+
+–
+–
2.5V
UVL
Q4
1V
Q12
CP4
REF
–
+
+
–
CP7
REF
–
+
CP5
REF
–
+
RESETIN 9
PWRGD 7
Q10
FAULT 6
Q11
OFF/ON 5
Q5
Q7
21
µA
12VIN
GND
8
DRIVE
11
PRECHARGE
1644 BD
12
LOGIC
Q1
TIMER
51mV, TIMER LO
150mV, TIMER HI
CP1
A1
CP2
A2
A3



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com