LT3430_02 데이터 시트보기 (PDF) - Linear Technology
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LT3430_02 Datasheet PDF : 28 Pages
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LT3430
ABSOLUTE AXI U RATI GS
(Note 1)
Input Voltage (VIN) ................................................. 60V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage ................................................. 68V
SYNC Voltage ........................................................... 7V
SHDN Voltage ........................................................... 6V
BIAS Pin Voltage .................................................... 30V
FB Pin Voltage/Current .................................. 3.5V/2mA
Operating Junction Temperature Range
LT3430EFE (Note 8) ......................... – 40°C to 125°C
LT3430IFE (Note 8) ......................... – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
GND 1
SW 2
VIN 3
VIN 4
SW 5
BOOST 6
NC 7
GND 8
TOP VIEW
16 GND
15 SHDN
14 SYNC
13 NC
12 FB
11 VC
10 BIAS
9 GND
ORDER PART
NUMBER
LT3430EFE
LT3430IFE
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 45°C/ W, θJC = 10°C/ W
EXPOSED PAD MUST BE SOLDERED
TO GROUND PLANE
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C.
VIN = 15V, VC = 1.5V, SHDN = 1V, BOOST = Open Circuit, SW = Open Circuit, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Reference Voltage (VREF)
FB Input Bias Current
VOL + 0.2 ≤ VC ≤ VOH – 0.2
5.5V ≤ VIN ≤ 60V
1.204 1.219 1.234
q 1.195
1.243
q
– 0.2 – 1.5
Error Amp Voltage Gain
(Note 2)
200 400
Error Amp gm
dl (VC) = ±10µA
1650 2200 3300
q 1000
4200
VC to Switch gm
EA Source Current
FB = 1V
3.4
q 125 225 450
EA Sink Current
FB = 1.4V
q 100 225 500
VC Switching Threshold
VC High Clamp
Switch Current Limit
Switch On Resistance
Duty Cycle = 0
SHDN = 1V
VC Open, Boost = VIN + 5V, FB = 1V
– 40°C ≤ TJ ≤ 25°C
TJ = 125°C (Note 9)
ISW = 3A, Boost = VIN + 5V (Note 7)
0.9
2.1
3 4.5 6
2.5 3.5 6
0.1 0.14
q
0.18
Maximum Switch Duty Cycle
FB = 1V
93 96
q 90
Switch Frequency
VC Set to Give DC = 50%
184 200 216
q 172 200 228
fSW Line Regulation
fSW Shifting Threshold
5.5V ≤ VIN ≤ 60V
Df = 10kHz
q
0.05 0.15
0.8
UNITS
V
µA
V/V
µMho
µMho
A/V
µA
µA
V
V
A
A
Ω
Ω
%
%
kHz
kHz
%/V
V
2
sn3430 3430is
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