參數(shù)資料
型號(hào): LTC1644CGN#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 2/24頁(yè)
文件大小: 447K
描述: IC CONTROLLER HOT SWAP 20-SSOP
標(biāo)準(zhǔn)包裝: 2,500
類型: 熱交換控制器
應(yīng)用: CompactPCI?
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 3.3V,5V,±12V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 20-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 20-SSOP
包裝: 帶卷 (TR)
LTC1644
2
1644f
Supply Voltages
12V
IN
................................................................ 13.2V
V
EEIN
.................................................................. 14V
Input Voltages (Pins 5, 9).......................0.3V to 13.5V
Output Voltages (Pins 6, 7, 10) ..............0.3V to 13.5V
Analog Voltages and Currents
Pins 3, 11 to 14, 16 to 18...................0.3V to 13.5V
Pins 4, 15 .............................0.3V to (12V
IN
 + 0.3V)
V
EEOUT
...................................................14V to 0.3V
12V
OUT
...............................................0.3V to 13.2V
Operating Temperature Range
LTC1644C ...............................................0癈 to 70癈
LTC1644I............................................ 40癈 to 85癈
Storage Temperature Range ................. 65癈 to 150癈
Lead Temperature (Soldering, 10 sec)..................300癈
ORDER PART
NUMBER
T
JMAX
 = 140癈, ?/DIV>
JA
 = 135癈/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC1644CGN
LTC1644IGN
ABSOLUTE   AXI  U   RATI  GS
W
W
U
PACKAGE/ORDER I  FOR  ATIO
U
W
(Note 1)
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
 = 25?/SPAN>C.
V
12VIN
= 12V, V
EEIN
 = 12V, V
3VIN
 = 3.3V, V
5VIN
 = 5V unless otherwise noted.
SYMBOL   PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
DD
V
12VIN
 Supply Current
OFF/ON = 0V
q
3
8
mA
V
LKO
Undervoltage Lockout
12V
IN
, Ramping Down
q
6.00
8.30
10.80
V
3V
IN
, 5V
IN
, Ramping Down
q
2.25
2.48
2.75
V
V
FB
Foldback Current Limit Voltage
V
FB
 = (V
5VIN
  V
5VSENSE
), V
5VOUT
 = 0V, TIMER = 0V
q
8
12
15
mV
V
FB
 = (V
5VIN
  V
5VSENSE
), V
5VOUT
 = 3V, TIMER = 0V
q
40
51
70
mV
V
FB
 = (V
3VIN
  V
3VSENSE
), V
3VOUT
 = 0V, TIMER = 0V
q
8
12
15
mV
V
FB
 = (V
3VIN
  V
3VSENSE
), V
3VOUT
 = 2V, TIMER = 0V
q
40
51
70
mV
V
CB
Circuit Breaker Trip Voltage
V
CB
 = (V
5VIN
  V
5VSENSE
), TIMER = FLOAT
q
40
55
70
mV
V
CB
 = (V
3VIN
  V
3VSENSE
), TIMER = FLOAT
q
40
55
70
mV
t
OC
Overcurrent Fault Response Time
(V
5VIN
  V
5VSENSE
) = 100mV, TIMER = FLOAT
q
30
45
60
(V
3VIN
  V
3VSENSE
) = 100mV, TIMER = FLOAT
q
30
45
60
t
SC
Short-Circuit Response Time
(V
5VIN
  V
5VSENSE
) = 200mV, TIMER = FLOAT
q
0.1
1.0
(V
3VIN
  V
3VSENSE
) = 200mV, TIMER = FLOAT
q
0.1
1.0
I
CP
GATE Pin Output Current
OFF/ON = 0V, V
GATE
 = 0V, TIMER = 0V
q
20
65
100
礎(chǔ)
V
GATE
 = 5V, OFF/ON = 4V
100
225
300
礎(chǔ)
OFF/ON = 0V, V
GATE
 = 2V, TIMER = FLOAT, FAULT = 0V
q
3
10
20
mA
V
GATE
External Gate Voltage
V
GATE
 = (V
12VIN
  V
GATE
), I
GATE
 = 1礎(chǔ)
q
50
200
mV
V
DROP
Internal Switch Voltage Drop
V
DROP
 = (V
12VIN
  V
12VOUT
), I = 500mA
q
200
600
mV
V
DROP
 = (V
EEOUT
  V
EEIN
), I
EE
 = 100mA
q
110
250
mV
I
CL
Current Foldback
12V
IN
 = 12V, 12V
OUT
 = 0V, TIMER = 0V
q
50
360
600
mA
12V
IN
 = 12V, 12V
OUT
 = 10V, TIMER = 0V
q    525
840
1500
mA
V
EEIN
 = 12V, V
EEOUT
 = 0V, TIMER = 0V
q
20
100
300
mA
V
EEIN
 = 12V, V
EEOUT
 = 10V, TIMER = 0V
q
200
320
650
mA
T
TS
Thermal Shutdown Temperature
130
1
2
3
4
5
6
7
8
9
10
TOP VIEW
GN PACKAGE
20-LEAD PLASTIC SSOP
20
19
18
17
16
15
14
13
12
11
12V
IN
V
EEIN
5V
OUT
TIMER
OFF/ON
FAULT
PWRGD
GND
RESETIN
RESETOUT
12V
OUT
V
EEOUT
3V
OUT
3V
IN
3V
SENSE
GATE
5V
SENSE
5V
IN
PRECHARGE
DRIVE
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