參數(shù)資料
型號(hào)： LTC1736C
廠商： Linear Technology Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Isolated Flyback Switching Regulator with 9V Output
中文描述： 隔離反激式開(kāi)關(guān)穩(wěn)壓9V輸出
文件頁(yè)數(shù)： 2/28頁(yè)
文件大?。?/td> 322K
代理商： LTC1736C
2
LTC1736
ABSOLUTEW
(Note 1)
Input Supply Voltage (V
IN
).........................36V to –0.3V
Topside Driver Supply Voltage (BOOST)....42V to –0.3V
Switch Voltage (SW) ....................................36V to –5V
EXTV
CC
, VIDV
CC
, (BOOST – SW) Voltages ..7V to –0.3V
SENSE
+
, SENSE
–
..........................1.1(INTV
CC
) to –0.3V
FCB Voltage ............................(INTV
CC
+ 0.3V) to –0.3V
I
TH
, V
OSENSE
, V
FB
Voltage .........................2.7V to –0.3V
RUN/SS, VID0 to VID4, PGOOD Voltages ....7V to –0.3V
Peak Driver Output Current <10
μ
s (TG, BG) .............. 3A
INTV
CC
Output Current ......................................... 50mA
Operating Ambient Temperature Range
LTC1736C ...............................................0
°
C to 85
°
C
LTC1736I............................................ –40
°
C to 85
°
C
Junction Temperature (Note 2).............................125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
W
W
U
PACKAGE/ORDER IU
U
W
ORDER PART
NUMBER
Consult factory for Military grade parts.
T
JMAX
= 125
°
C,
θ
JA
= 110
°
C/W
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
G PACKAGE
24-LEAD PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
C
OSC
RUN/SS
I
TH
FCB
SGND
PGOOD
SENSE
–
SENSE
+
V
FB
V
OSENSE
VID0
VID1
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
VIDV
CC
VID4
VID3
VID2
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V, V
RUN/SS
= 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
Main Control Loop
V
OSENSE
Output Voltage Set Accuracy
(Note 3) See Table 1
V
LINEREG
Reference Voltage Line Regulation
V
IN
= 3.6V to 30V (Note 3)
V
LOADREG
Output Voltage Load Regulation
(Note 3)
Measured in Servo Loop; V
ITH
= 0.7V
Measured in Servo Loop; V
ITH
= 2V
g
m
Transconductance Amplifier g
m
V
FCB
Forced Continuous Threshold
I
FCB
Forced Continuous Current
V
FCB
= 0.85V
V
OVL
Feedback Overvoltage Lockout
I
Q
Input DC Supply Current
(Note 4)
Normal Mode
Shutdown
V
RUN/SS
= 0V
V
RUN/SS
Run Pin Start Threshold
V
RUN/SS
, Ramping Positive
V
RUN/SS
Run Pin Begin Latchoff Threshold
V
RUN/SS
, Ramping Positive
I
RUN/SS
Soft-Start Charge Current
V
RUN/SS
= 0V
I
SCL
RUN/SS Discharge Current
Soft Short Condition, V
FB
= 0.5V,
V
RUN/SS
= 4.5V
UVLO
Undervoltage Lockout
Measured at V
IN
Pin (V
IN
Ramping Down)
V
SENSE(MAX)
Maximum Current Sense Threshold
V
FB
= 0.7V
I
SENSE
SENSE Pins Total Source Current
t
ON(MIN)
Minimum On-Time
Tested with a Square Wave (Note 8)
TG Transition Time:
(Note 9)
TG t
r
Rise Time
C
LOAD
= 3300pF
TG t
f
Fall Time
C
LOAD
= 3300pF
LTC1736CG
LTC1736IG
The
G
denotes specifications which apply over the full operating
MIN
TYP
MAX
UNITS
G
1
%
0.001
0.02
%/V
G
G
0.1
–0.1
1.3
0.8
–0.17
0.86
0.3
–0.3
%
%
mmho
G
0.76
0.84
–0.3
0.88
V
μ
A
V
G
0.84
450
15
1.5
4.1
–1.2
2
μ
A
μ
A
V
V
μ
A
μ
A
25
1.9
4.5
1.0
–0.7
0.5
4
G
3.5
75
60
160
3.9
85
80
200
V
G
60
mV
μ
A
ns
V
SENSE–
= V
SENSE+
= 0.8V
50
50
90
90
ns
ns
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