參數(shù)資料
型號(hào)： LTC1929CG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Isolated Flyback Switching Regulator with 9V Output
中文描述： 3 A DUAL SWITCHING CONTROLLER, 310 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁(yè)數(shù)： 2/24頁(yè)
文件大小： 233K
代理商： LTC1929CG
2
LTC1929
ORDER PART
NUMBER
LTC1929CG
LTC1929IG
ABSOLUTEW
(Note 1)
Input Supply Voltage (V
IN
).........................36V to –0.3V
Topside Driver Voltages (BOOST1,2).........42V to –0.3V
Switch Voltage (SW1, 2) .............................36V to –5 V
SENSE1
+
, SENSE2
+
, SENSE1
–
,
SENSE2
–
Voltages........................(1.1)INTV
CC
to –0.3V
EAIN, V
OS+
, V
OS–
, EXTV
CC
, INTV
CC
,
RUN/SS, AMPMD Voltages..........................7V to –0.3V
Boosted Driver Voltage (BOOST-SW) ..........7V to –0.3V
PLLFLTR, PLLIN, V
DIFFOUT
Voltages.... INTV
CC
to –0.3V
I
TH
Voltage................................................2.7V to –0.3V
Peak Output Current <1
μ
s(TGL1,2, BG1,2)................ 3A
INTV
CC
RMS Output Current................................ 50mA
Operating Ambient Temperature Range
LTC1929C..................................................0
°
C to 85
°
C
LTC1929I.............................................. –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
T
JMAX
= 125
°
C,
θ
JA
= 95
°
C/W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V, V
RUN/SS
= 5V unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
SYMBOL
Main Control Loop
V
EAIN
V
SENSEMAX
I
INEAIN
V
LOADREG
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Feedback Voltage
Maximum Current Sense Threshold
Feedback Current
Output Voltage Load Regulation
(Note 3); I
TH
Voltage = 1.2V
V
SENSE–
= 5V
(Note 3)
(Note 3)
Measured in Servo Loop; I
TH
Voltage = 0.7V
Measured in Servo Loop; I
TH
Voltage = 2V
V
IN
= 3.6V to 30V (Note 3)
Measured at V
EAIN
V
IN
Ramping Down
I
TH
= 1.2V; Sink/Source 5
μ
A; (Note 3)
I
TH
= 1.2V; (g
m
xZ
L
; No Ext Load); (Note 3)
(Note 4)
EXTV
CC
Tied to V
OUT
; V
OUT
= 5V
V
RUN/SS
= 0V
V
RUN/SS
= 1.9V
V
RUN/SS
Rising
V
RUN/SS
Rising from 3V
Soft Short Condition V
EAIN
= 0.5V;
V
RUN/SS
= 4.5V
G
0.792
65
0.800
75
–5
0.808
85
–50
V
mV
nA
0.05
–0.1
0.002
0.86
3.5
3
1.5
0.3
–0.5
%
%
V
REFLNREG
V
OVL
UVLO
g
m
g
mOL
I
Q
Reference Voltage Line Regulation
Output Overvoltage Threshold
Undervoltage Lockout
Transconductance Amplifier g
m
Transconductance Amplifier Gain
Input DC Supply Current
Normal Mode
Shutdown
Soft-Start Charge Current
RUN/SS Pin ON Threshold
RUN/SS Pin Latchoff Arming
RUN/SS Discharge Current
%/V
G
0.84
3
0.88
4
V
V
mmho
V/mV
470
20
–1.2
1.5
4.1
2.0
μ
A
μ
A
μ
A
V
V
μ
A
40
I
RUN/SS
V
RUN/SS
V
RUN/SSLO
I
SCL
1.0
1.9
0.5
4.0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN/SS
SENSE1
+
SENSE1
–
EAIN
PLLFLTR
PLLIN
NC
I
TH
SGND
V
DIFFOUT
V
OS–
V
OS+
SENSE2
–
SENSE2
+
NC
TG1
SW1
BOOST1
V
IN
BG1
EXTV
CC
INTV
CC
PGND
BG2
BOOST2
SW2
TG2
AMPMD
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