參數(shù)資料
型號： LT1952IGN
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Single Switch Synchronous Forward Controller
中文描述： 1 A SWITCHING CONTROLLER, 560 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù)： 2/24頁
文件大?。?/td> 252K
代理商： LT1952IGN
LT1952
2
1952f
GN PACKAGE
16-LEAD PLASTIC SSOP
T
JMAX
= 125
°
C,
θ
JA
= 110
°
C/W,
θ
JC
= 40
°
C/W
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
COMP
FB
R
OSC
SYNC
SS_MAXDC
V
REF
SD_V
SEC
GND
SOUT
V
IN
OUT
PGND
DELAY
OC
I
SENSE
BLANK
V
IN
(Note 8) ............................................... –0.3V to 25V
SYNC, SS_MAXDC, SD_V
SEC
, I
SENSE
,
OC, COMP, BLANK, DELAY ......................... –0.3V to 6V
FB ................................................................ –0.3V to 3V
R
OSC......................................................................................
–50
μ
A
V
REF
.................................................................... –10mA
Operating Junction Temperature Range
(Notes 2, 5) .......................................–40
°
C to 125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
ORDER PART
NUMBER
GN PART
MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
1952E
1952I
LT1952EGN
LT1952IGN
ABSOLUTEW
(Note 1)
W
W
U
PACKAGE/ORDER IU
U
W
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. COMP = open, FB = 1.4V, R
OSC
= 178k, SYNC = 0V, SS_MAXDC = V
REF
, V
REF
= 0.1
μ
F, SD_V
SEC
= 2V, BLANK = 40k, DELAY = 40k, I
SENSE
= 0V, OC = 0V, OUT = 1nF, V
IN
= 15V, SOUT = open, unless otherwise specified.
The
●
denotes the specifications which apply over the full operating
PARAMETER
PWM CONTROLLER
Operational Input Voltage
V
IN
Quiescent Current
V
IN
Startup Current
V
IN
Shutdown Current
SD_V
SEC
Threshold
SD_V
SEC (ON)
Current
SD_V
SEC (OFF)
Current
V
IN ON
V
IN OFF
V
IN HYSTERESIS
V
REF
Output Voltage
Line Regulation
Load Regulation
OSCILLATOR
Frequency: f
OSC
Minimum Programmable f
OSC
Maximum Programmable f
OSC
SYNC Input Resistance
SYNC Switching Threshold
SYNC Frequency/f
OSC
f
OSC
Line Reg
CONDITIONS
MIN
TYP
MAX
UNITS
I
(VREF)
= 0
μ
A
I
(VREF)
= 0
μ
A, FB = 0V, I
SENSE
= OC = Open
FB = 0V, SS_MAXDC = 0V (Notes 4, 9)
SD_V
SEC
= 0V
10V < V
IN
< 25V
SD_V
SEC
= SD_V
SEC
Threshold + 100mV
SD_V
SEC
= SD_V
SEC
Threshold – 100mV
●
V
IN OFF
25
6.5
700
350
1.379
V
5.2
460
240
1.32
0
11.2
14.25
8.75
5.5
mA
μ
A
μ
A
●
●
1.261
V
μ
A
μ
A
V
V
V
9.5
12.75
8.0
3.75
12.9
15.75
9.25
6.75
●
●
●
I
(VREF)
= 0
μ
A
I
(VREF)
= 0
μ
A, 10V < V
IN
< 25V
0
μ
A < I
(VREF)
< 2.5mA
●
2.425
2.5
1
1
2.575
10
10
V
mV
mV
R
OSC
= 178k, FB = 1V
R
OSC
= 365k
R
OSC
= 64.9k, COMP = 2.5V, SD_V
SEC
= 2.64V
●
165
80
440
200
100
500
18
1.5
1.25
0.05
240
120
560
kHz
kHz
kHz
k
FB = 1V
FB = 1V (Note 7)
FB = 1V, R
OSC
= 178k; 10V < V
IN
< 25V,
SS_MAXDC = 1.84V
R
OSC
Pin voltage
2.2
1.5
0.33
V
%/V
V
ROSC
1
V
相關(guān)PDF資料
PDF描述
LT1952EGN Single Switch Synchronous Forward Controller
LT1952 Single Switch Synchronous Forward Controller
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