LT3433 LINER [Linear Technology], LT3433 Datasheet - Page 2

• Manufacturer Part Number: LT3433
• Description: High Voltage Step-Up/Step-Down DC/DC Converter
• Manufacturer: LINER [Linear Technology]

ABSOLUTE
ELECTRICAL CHARACTERISTICS
LT3433
(Note 1)
Input Supply (V
Boosted Supply (V
(V
Internal Supply (V
SW_H Switch Voltage .................................. – 2V to 60V
SW_L Switch Voltage ............................... – 0.3V to 30V
Feedback Voltage (V
Operating Junction Temperature Range (Note 5)
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
The
V
SYMBOL
V
V
V
V
I
V
I
R
R
V
I
I
I
I
V
2
VIN
VBIAS
VBST
VOUT
LIM
SS
IN
IN(UVLO)
OUT
BST
BIAS
SHDN
FB
IN
SWH(ON)
SWL(ON)
BST(MAX)
LT3433E (Note 6) ............................ – 40 C to 125 C
LT3433I ........................................... – 40 C to 125 C
= 13.8V, V
/I
/I
SW
SW
denotes specifications that apply over the full operating temperature range, otherwise specifications are at T
= 80V)
FB
PARAMETER
Operating Voltage Range
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Operating Voltage Range
Operating Voltage Range
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
Boost Supply Switch Drive Current
Output Supply Switch Drive Current
Switch Current Limit
Foldback Current Limit
Soft-Start Output Current
Feedback Reference Voltage
= 1.25V, V
IN
) .................................... –0.3V to 60V
W
BIAS
MAXIMUM
BST
FB
) .............. –0.3V to V
) ............................. – 0.3V to 30V
) ............................... – 0.3V to 5V
OUT
W W
= 5V, V
BURST_EN
RATINGS
= 0V, V
U
SW_H
BST
CONDITIONS
Enable Threshold
V
V
(Notes 2, 3)
V
V
V
V
I
I
Disable
Enable
High Side Switch On, I
Low Side Switch On, I
V
SW
SW
BST
BST
VC
SHDN
VC
SHDN
FB
+ 30V
– V
= 500mA
= 500mA
= 0V
< 0.6V
< 0.6V
< V
– V
< 0.4V
< 0.4V
IN
SW_H
SW_H
= 5V, unless otherwise noted.
+ 20V
PACKAGE/ORDER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
EXPOSED PAD (PIN 17) MUST BE SOLDERED TO SGND
BURST_EN
T
SW
JMAX
SW
SW_H
SGND
SGND
V
V
BST
V
= 500mA
V
= 500mA
FB
IN
= 125 C,
C
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
FE PACKAGE
JA
TOP VIEW
= 40 C/W,
17
JC
16
15
14
13
12
11
10
9
= 10 C/W
SGND
SW_L
PWRGND
V
V
SHDN
SS
SGND
OUT
BIAS
1.224
1.215
MIN
3.3
3.3
0.4
0.5
4
3
INFORMATION
U
FE PART MARKING
1.231
0.35
TYP
160
580
100
660
3.4
2.6
0.1
0.1
4.5
0.8
0.6
0.7
10
30
30
5
ORDER PART
LT3433EFE
LT3433IFE
A
W
NUMBER
3433EFE
3433IFE
= 25 C.
1.238
1.245
MAX
3.95
940
190
990
2.9
1.2
0.9
60
20
75
20
25
20
50
50
1
1
9
UNITS
U
mA/A
mA/A
3433ia
mV
mA
V
V
V
V
V
A
A
A
V
V
A
A
A
V
V
A
A
A
V
V