參數(shù)資料
型號(hào)： LT3470
廠商： Linear Integrated Systems
英文描述： Micropower Buck Regulator with Integrated Boost and Catch Diodes
中文描述： 微功耗降壓穩(wěn)壓器與集成升壓二極管和捕捉
文件頁數(shù)： 2/16頁
文件大?。?/td> 205K
代理商： LT3470
2
LT3470
3470f
(Note 1)
V
IN
, SHDN Voltage.................................................. 40V
BOOST Pin Voltage................................................. 47V
BOOST Pin Above SW Pin ...................................... 25V
FB Voltage ................................................................ 5V
BIAS Voltage............................................................ 25V
SW Voltage................................................................V
IN
Maximum Junction Temperature......................... 125
°
C
Operating Temperature Range (Note 2).. –40
°
C to 85
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ABSOLUTEW
W
W
U
PACKAGE/ORDER U
U
W
SHDN 1
NC 2
V
IN
3
GND 4
8 FB
7 BIAS
6 BOOST
5 SW
TOP VIEW
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
T
JMAX
= 125
°
C,
θ
JA
= 140
°
C/W
ORDER PART
NUMBER
TS8 PART MARKING
LT3470ETS8
LT3470ITS8
LTBDM
LTBPW
PARAMETER
Minimum Input Voltage
Quiescent Current from V
IN
CONDITIONS
MIN
TYP
MAX
4
0.5
18
50
0.5
60
1.5
1.265
80
150
0.01
UNITS
●
V
V
SHDN
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0V, Not Switching
V
SHDN
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0V, Not Switching
V
FB
Falling
V
FB
= 1V
0.1
10
35
0.1
25
0.1
1.250
35
35
0.0006
500
0.7
215
325
225
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
V
nA
nA
●
Quiescent Current from Bias
●
FB Comparator Trip Voltage
FB Pin Bias Current (Note 3)
●
1.228
●
FB Voltage Line Regulation
Minimum Switch Off-Time (Note 5)
Switch Leakage Current
Switch V
CESAT
Switch Top Current Limit
Switch Bottom Current Limit
4V < V
IN
< 40V
%/V
ns
μ
A
mV
mA
mA
1.5
300
435
I
SW
= 100mA
V
FB
= 0V
V
FB
= 0V
250
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
V
IN
= 10V, V
SHDN
= 10V, V
BOOST
= 15V, V
BIAS
= 3V unless otherwise specified.
ELECTRICAL CHARACTERISTICS
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