LT3430EFE Ver la hoja de datos (PDF) - Linear Technology
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LT3430EFE Datasheet PDF : 28 Pages
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LT3430/LT3430-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage (VIN) .................................................. 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
PACKAGE/ORDER INFORMATION
TOP VIEW
GND 1
SW 2
VIN 3
VIN 4
SW 5
BOOST 6
NC 7
GND 8
16 GND
15 SHDN
14 SYNC
13 NC
17
12 FB
11 VC
10 BIAS
9 GND
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 45°C/W, θJC = 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 specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. VIN = 15V, VC = 1.5V, ⎯S⎯H⎯D⎯N = 1V, BOOST = Open Circuit,
SW = Open Circuit, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Reference Voltage (VREF)
FB Input Bias Current
VOL + 0.2 ≤ VC ≤ VOH – 0.2
5.5V ≤ VIN ≤ 60V
1.204 1.219 1.234
V
● 1.195
1.243
●
–0.2 –1.5
µA
Error Amp Voltage Gain
(Note 2)
200
400
V/V
Error Amp gm
dl (VC) = ±10µA
1650 2200 3300
● 1000
4200
µMho
µMho
VC to Switch gm
EA Source Current
FB = 1V
3.4
A/V
● 125
225
450
µA
EA Sink Current
FB = 1.4V
● 100
225
500
µA
VC Switching Threshold
VC High Clamp
Switch Current Limit
Switch On Resistance
Duty Cycle = 0
⎯S⎯H⎯D⎯N = 1V
VC Open, Boost = VIN + 5V, FB = 1V
–40°C ≤ TJ ≤ 25°C
TJ = 125°C (Note 9)
ISW = 2.5A, Boost = VIN + 5V (Note 7)
0.9
V
2.1
V
3
5
6.5
A
2.5
4
5.5
A
0.1
0.14
Ω
0.18
Ω
Maximum Switch Duty Cycle (LT3430)
FB = 1V
93
96
%
● 90
%
34301fa
2
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