參數(shù)資料
型號： 1977IFE
廠商： Linear Technology Corporation
英文描述： High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100uA Quiescent Current
中文描述： 高電壓，500kHz降壓1.5安培的電流型開關穩(wěn)壓器的靜態(tài)電流為100uA
文件頁數(shù)： 2/24頁
文件大?。?/td> 288K
代理商： 1977IFE
LT1977
2
1977f
(Note 1)
V
IN
, SHDN, BIAS..................................................... 60V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage................................................. 68V
SYNC, C
SS
, PGFB, FB................................................ 6V
Operating JunctionTemperature Range
LT1977EFE (Note 2) ........................ –40
°
C to 125
°
C
LT1977IFE (Note 2) ......................... –40
°
C to 125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
ORDER PART
NUMBER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LT1977EFE
LT1977IFE
ABSOLUTEW
W
W
U
PACKAGE/ORDER IU
U
W
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
J
= 25
°
C. V
IN
= 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V, C
SS
/SYNC = 0V
unless otherwise noted.
The
●
denotes the specifications which apply over the full operating
T
JMAX
= 125
°
C,
θ
JA
= 45
°
C/W,
θ
JC(PAD)
= 10
°
C/W
EXPOSED PAD IS GND (PIN 17)
MUST BE SOLDERED TO GND (PIN 8)
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
NC
SW
NC
V
IN
NC
BOOST
C
T
GND
PG
SHDN
SYNC
PGFB
FB
V
C
BIAS
C
SS
17
SYMBOL
V
SHDN
I
SHDN
PARAMETER
SHDN Threshold
SHDN Input Current
Minimum Input Voltage (Note 3)
Supply Shutdown Current
Supply Sleep Current (Note 4)
CONDITIONS
MIN
1.15
TYP
1.3
5
2.4
0.1
170
45
MAX
1.45
20
3
2
250
75
4.10
3.25
3
180
900
UNITS
V
SHDN = 12V
●
μ
A
V
μ
A
μ
A
μ
A
mA
mA
●
I
VINS
SHDN = 0V, BOOST = 0V, FB/PGFB = 0V
BIAS = 0V, FB = 1.35V
FB = 1.35V
BIAS = 0V, FB = 1.15V
BIAS = 5V, FB = 1.15V
●
●
I
VIN
Supply Quiescent Current
Minimum BIAS Voltage (Note 5)
BIAS Sleep Current (Note 4)
BIAS Quiescent Current
Minimum Boost Voltage (Note 6)
Input Boost Current (Note 7)
Reference Voltage (V
REF
)
FB Input Bias Current
EA Voltage Gain (Note 8)
EA Voltage g
m
EA Source Current
EA Sink Current
V
C
to SW g
m
V
C
High Clamp
SW Current Limit
●
2.7
110
700
1.8
40
1.25
75
900
650
40
30
3
2.2
2.4
V
I
BIASS
I
BIAS
●
μ
A
μ
A
V
mA
SYNC = 3.3V
I
SW
= 1.5A
I
SW
= 1.5A
3.3V < V
VIN
< 60V
V
REF
I
FB
●
1.225
1.275
200
V
nA
V/V
dI(V
C
)=
±
10
μ
A
FB = 1.15V
FB = 1.35V
450
20
15
900
55
40
μ
Mho
μ
A
μ
A
A/V
2.1
1.5
2.4
3.5
V
A
I
PK
●
FE PART
MARKING
1977EFE
1977IFE
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相關代理商/技術參數(shù)
參數(shù)描述
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19780 功能描述:KIT METER RES DIG TEMP/HUMIDITY RoHS:否 類別:靜電控制，ESD，無塵室產(chǎn)品 >> 監(jiān)視器，測試儀 系列:- 產(chǎn)品目錄繪圖:19226 標準包裝:1 系列:- 類型:工作站監(jiān)視器 使用:工作面，腕帶監(jiān)視 特點:連續(xù)監(jiān)視，NIST 可追溯，單芯系統(tǒng) 電源類型:AC 適配器 包括:AC 適配器，證書，軟線，五金件 其它名稱:16-1116
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1978000000 制造商:Weidmuller 功能描述:SC-SMT 3.81/09/135G 1.5SN BK
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