Datasheet
LT3430/LT3430-1
2
34301fa
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V
IN
) .................................................. 60V
BOOST Pin Above SW (Note 11) .............................. 35V
BOOST Pin Voltage ................................................. 68V
SYNC Voltage ............................................................. 7V
⎯
S
⎯
H
⎯
D
⎯
N Voltage ............................................................ 6V
BIAS Pin Voltage ..................................................... 30V
FB Pin Voltage/Current .................................. 3.5V/2mA
Operating Junction Temperature Range
LT3430EFE (Notes 8, 10) .................. –40°C to 125°C
LT3430IFE (Notes 8, 10) .................. –40°C to 125°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................ 300°C
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage (V
REF
)V
OL
+ 0.2 ≤ V
C
≤ V
OH
– 0.2
5.5V ≤ V
IN
≤ 60V
●
1.204
1.195
1.219 1.234
1.243
V
FB Input Bias Current
●
–0.2 –1.5 µA
Error Amp Voltage Gain (Note 2) 200 400 V/V
Error Amp g
m
dl (V
C
) = ±10µA
●
1650
1000
2200 3300
4200
µMho
µMho
V
C
to Switch g
m
3.4 A/V
EA Source Current FB = 1V
●
125 225 450 µA
EA Sink Current FB = 1.4V
●
100 225 500 µA
V
C
Switching Threshold Duty Cycle = 0 0.9 V
V
C
High Clamp
⎯
S
⎯
H
⎯
D
⎯
N = 1V 2.1 V
Switch Current Limit V
C
Open, Boost = V
IN
+ 5V, FB = 1V
–40°C ≤ T
J
≤ 25°C
T
J
= 125°C (Note 9)
3
2.5
5
4
6.5
5.5
A
A
Switch On Resistance I
SW
= 2.5A, Boost = V
IN
+ 5V (Note 7) 0.1 0.14
0.18
Ω
Ω
Maximum Switch Duty Cycle (LT3430) FB = 1V
●
93
90
96 %
%
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
GND
SW
V
IN
V
IN
SW
BOOST
NC
GND
GND
SHDN
SYNC
NC
FB
V
C
BIAS
GND
17
T
JMAX
= 125°C, θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER FE PART MARKING
LT3430EFE
LT3430IFE
LT3430EFE-1
LT3430IFE-1
3430EFE
3430IFE
3430EFE-1
3430IFE-1
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
J
= 25°C. V
IN
= 15V, V
C
= 1.5V,
⎯
S
⎯
H
⎯
D
⎯
N = 1V, BOOST = Open Circuit,
SW = Open Circuit, unless otherwise noted.