LT3150 Просмотр технического описания (PDF) - Linear Technology
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производитель
LT3150
Linear Technology
LT3150 Datasheet PDF : 20 Pages
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LT3150
ABSOLUTE AXI U RATI GS
(Note 1)
VIN1, SHDN1 Voltage .............................................. 10V
SW Voltage .............................................. – 0.4V to 36V
FB1 Voltage ................................................ VIN1 + 0.3V
Current into FB1, FB2 Pin .................................... ±1mA
VIN2, IPOS, INEG ....................................................... 22V
SHDN2 .................................................................... VIN2
Operating Ambient Temperature Range ..... 0°C to 70°C
Junction Temperature (Note 2) ........................... 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SW 1
SWGND 2
VIN1 3
SHDN2 4
VIN2 5
GND 6
NC 7
FB2 8
TOP VIEW
16 FB1
15 GND
14 SHDN1
13 IPOS
12 INEG
11 GATE
10 NC
9 COMP
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 130°C/W, θJC = 40°C/W
ORDER PART
NUMBER
LT3150CGN
GN PART
MARKING
3150
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 TA = 25°C.
VIN1 = 1.5V, VSHDN1 = VIN1, VIN2 = 12V, GATE = 6V, IPOS = INEG = 5V, VSHDN2 = 0.75V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
Boost Switching Regulator
VIN1 Minimum Operating Voltage
VIN1 Maximum Operating Voltage
VFB1
FB1 Reference Voltage
FB1 Input Bias Current
Current Flows into Pin
q 1.20
q
0.9
1.1
10
1.23
1.255
27
80
IQ1
VIN1 Quiescent Current
VSHDN1 = 1.5V
VIN1 Quiescent Current in Shutdown
VSHDN1 = 0V, VIN1 = 2V
VSHDN1 = 0V, VIN1 = 5V
FB1 Reference Line Regulation
1.5V ≤ VIN1 ≤ 10V
Switching Frequency
q
1
3
4.5
0.01
0.5
0.01
1.0
0.02
0.2
1.4
1.9
Maximum Duty Cycle
q
82
86
Switch Current Limit
(Note 3)
550
800
Switch VCESAT
Switch Leakage Current
SHDN1 Input Voltage High
ISW = 300mA
VSW = 5V
300
350
0.01
1
1
SHDN1 Input Voltage Low
0.3
SHDN1 Input Bias Current
Linear Regulator Controller
VSHDN1 = 3V, Current Flows into Pin
VSHDN1 = 0V, Current Flows into Pin
25
50
0.01
0.1
IQ2
VIN2 Quiescent Current
VFB2
FB2 Reference Voltage
q
5
1.203
q 1.198
12
1.210
1.210
19
1.217
1.222
FB2 Line Regulation
FB2 Input Bias Current
10V ≤ VIN2 ≤ 20V
q
FB2 = VFB2, Current Flows out of Pin
q
0.01
0.03
– 0.6
–4
UNITS
V
V
V
nA
mA
µA
µA
%/V
MHz
%
mA
mV
µA
V
V
µA
µA
mA
V
V
%/V
µA
3150f
2
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