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參數(shù)資料
| 型號(hào)： | LTC1435ACS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 14-bit, 5V, 200KSPS, 8-Channel Unipolar ADC 24-TSSOP -40 to 85 |
| 中文描述： | 2 A SWITCHING CONTROLLER, 138 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SO-16 |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 427K |
| 代理商： | LTC1435ACS |
2
LTC1435A
ABSOLUTE
AXI
U
RATIU
W
Input Supply Voltage (V
IN
).........................36V to –0.3V
Topside Driver Supply Voltage (BOOST)....42V to –0.3V
Switch Voltage (SW)............................. V
IN
+ 5V to –5V
EXTV
CC
Voltage ........................................ 10V to –0.3V
SENSE
+
, SENSE
–
Voltages...... INTV
CC
+ 0.3V to –0.3V
I
TH
, V
OSENSE
Voltages .............................. 2.7V to –0.3V
SFB, Run/SS Voltages .............................. 10V to –0.3V
Peak Driver Output Current < 10
μ
s (TG, BG)............. 2A
INTV
CC
Output Current ........................................ 50mA
Operating Ambient Temperature Range
LTC1435AC ............................................ 0
°
C to 70
°
C
LTC1435AI ......................................... –40
°
C to 85
°
C
Junction Temperature (Note 1).............................125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
W
W
PACKAGE/ORDER I
FOR
ATIO
W
U
U
ORDER PART
NUMBER
T
JMAX
= 125
°
C,
θ
JA
= 130
°
C/W (G)
T
JMAX
= 125
°
C,
θ
JA
= 110
°
C/W (S)
Consult factory for Military grade parts.
LTC1435ACG
LTC1435ACS
LTC1435AIG
LTC1435AIS
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
G PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C
OSC
RUN/SS
I
TH
SFB
SGND
V
OSENSE
SENSE
–
SENSE
+
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
T
A
= 25
°
C, V
IN
= 15V, V
RUN/SS
= 5V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
Main Control Loop
I
IN
V
OSENSE
V
OSENSE
V
LINEREG
V
LOADREG
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Feedback Current
Feedback Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
(Note 2)
(Note 2)
V
IN
= 3.6V to 20V (Note 2)
I
TH
Sinking 5
μ
A (Note 2)
I
TH
Sourcing 5
μ
A
V
SFB
Ramping Negative
V
SFB
= 1.5V
10
1.19
0.002
0.5
–0.5
1.19
–1
1.28
50
nA
V
G
1.178
1.202
0.01
0.8
–0.8
1.22
–2
1.32
%/V
G
G
%
%
V
μ
A
V
V
SFB
I
SFB
V
OVL
I
Q
Secondary Feedback Threshold
Secondary Feedback Current
Output Overvoltage Lockout
Input DC Supply Current
Normal Mode
Shutdown
Run Pin Threshold
Soft Start Current Source
Maximum Current Sense Threshold
Minimum On-Time
G
1.16
1.24
EXTV
CC
= 5V (Note 3)
3.6V < V
IN
< 30V
V
RUN/SS
= 0V, 3.6V < V
IN
< 15V
280
16
1.3
3
150
250
μ
A
μ
A
V
μ
A
mV
ns
25
2
4.5
180
300
V
RUN/SS
I
RUN/SS
V
SENSE(MAX)
t
ON(MIN)
G
0.8
1.5
130
V
RUN/SS
= 0V
V
OSENSE
= 0V, 5V
Tested with Square Wave, SENSE
–
= 1.6V,
V
SENSE
= 20mV (Note 5 )
TG Transition Time
Rise Time
Fall Time
BG Transition Time
Rise Time
Fall Time
TG t
r
TG t
f
C
LOAD
= 3000pF
C
LOAD
= 3000pF
50
50
150
150
ns
ns
BG t
r
BG t
f
Internal V
CC
Regulator
V
INTVCC
V
LDO
INT
V
LDO
EXT
V
EXTVCC
C
LOAD
= 3000pF
C
LOAD
= 3000pF
50
40
150
150
ns
ns
Internal V
CC
Voltage
INTV
CC
Load Regulation
EXTV
CC
Voltage Drop
EXTV
CC
Switchover Voltage
6V < V
IN
< 30V, V
EXTVCC
= 4V
I
INTVCC
= 15mA, V
EXTVCC
= 4V
I
INTVCC
= 15mA, V
EXTVCC
= 5V
I
INTVCC
= 15mA, V
EXTVCC
Ramping Positive
G
4.8
5.0
–0.2
130
4.7
5.2
–1
230
V
%
mV
G
4.5
V
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