參數(shù)資料
型號(hào): LT3433IFE
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: High Voltage Step-Up/Step-Down DC/DC Converter
中文描述: 0.9 A SWITCHING REGULATOR, 230 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 4.40 MM, PLASTIC, TSSOP-16
文件頁(yè)數(shù): 2/12頁(yè)
文件大小: 183K
代理商: LT3433IFE
2
LT3433
3433ia
SYMBOL
V
IN
V
IN(UVLO)
PARAMETER
Operating Voltage Range
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Operating Voltage Range
Operating Voltage Range
CONDITIONS
MIN
4
TYP
MAX
60
3.95
UNITS
G
V
V
Enable Threshold
G
3.4
160
mV
V
OUT
V
BST
G
3.3
20
75
20
940
190
25
2.9
20
990
V
V
V
V
BST
< V
SW_H
+ 20V
V
BST
– V
SW_H
(Notes 2, 3)
V
VC
< 0.6V
V
SHDN
< 0.4V
G
G
3.3
I
VIN
Normal Operation
Burst Mode Operation
Shutdown
Internal Supply Output Voltage
Operating Voltage Range
Normal Operation
Burst Mode Operation
Shutdown
Short-Circuit Current Limit
Boost Supply Switch On-Resistance
Output Supply Switch On-Resistance
Shutdown Pin Thresholds
G
G
G
580
100
10
2.6
μ
A
μ
A
μ
A
V
V
μ
A
μ
A
μ
A
mA
V
BIAS
G
G
I
VBIAS
G
660
0.1
0.1
4.5
0.8
0.6
V
VC
< 0.6V
V
SHDN
< 0.4V
R
SWH(ON)
R
SWL(ON)
V
SHDN
I
SW
= 500mA
I
SW
= 500mA
Disable
Enable
High Side Switch On, I
SW
= 500mA
Low Side Switch On, I
SW
= 500mA
G
1.2
1
G
G
G
0.4
V
V
1
I
VBST
/I
SW
I
VOUT
/I
SW
I
LIM
Boost Supply Switch Drive Current
Output Supply Switch Drive Current
Switch Current Limit
Foldback Current Limit
Soft-Start Output Current
Feedback Reference Voltage
G
30
30
0.7
0.35
5
1.231
50
50
0.9
mA/A
mA/A
G
G
0.5
A
A
V
FB
= 0V
I
SS
V
FB
G
3
9
μ
A
V
V
1.224
1.215
1.238
1.245
G
(Note 1)
Input Supply (V
IN
) .................................... –0.3V to 60V
Boosted Supply (V
BST
) .............. –0.3V to V
SW_H
+ 30V
(V
BST(MAX)
= 80V)
Internal Supply (V
BIAS
) ............................. –0.3V to 30V
SW_H Switch Voltage.................................. –2V to 60V
SW_L Switch Voltage ............................... –0.3V to 30V
Feedback Voltage (V
FB
)............................... –0.3V to 5V
Operating Junction Temperature Range (Note 5)
LT3433E (Note 6)............................ –40
°
C to 125
°
C
LT3433I........................................... –40
°
C to 125
°
C
Storage Temperature Range................ –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)................. 300
°
C
ABSOLUTE
AXI
U
RATIU
W
W
W
PACKAGE/ORDER I
FOR
ATIO
W
U
U
ORDER PART
NUMBER
LT3433EFE
LT3433IFE
FE PART MARKING
3433EFE
3433IFE
T
JMAX
= 125
°
C,
θ
JA
= 40
°
C/W,
θ
JC
= 10
°
C/W
EXPOSED PAD (PIN 17) MUST BE SOLDERED TO SGND
The
G
denotes specifications that apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C.
V
IN
= 13.8V, V
FB
= 1.25V, V
OUT
= 5V, V
BURST_EN
= 0V, V
BST
– V
IN
= 5V, unless otherwise noted.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
SGND
V
BST
SW_H
V
IN
BURST_EN
V
C
V
FB
SGND
SGND
SW_L
PWRGND
V
OUT
V
BIAS
SHDN
SS
SGND
17
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