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LT3150 Datasheet(PDF) 2 Page - Linear Technology

No. de pieza LT3150
Descripción Electrónicos  Fast Transient Response, Low Input Voltage, Very Low Dropout Linear Regulator Controller
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LT3150 Datasheet(HTML) 2 Page - Linear Technology

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LT3150
3150f
(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
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
SW
SWGND
VIN1
SHDN2
VIN2
GND
NC
FB2
FB1
GND
SHDN1
IPOS
INEG
GATE
NC
COMP
ORDER PART
NUMBER
LT3150CGN
GN PART
MARKING
3150
TJMAX = 125°C, θJA = 130°C/W, θJC = 40°C/W
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
UNITS
Boost Switching Regulator
VIN1 Minimum Operating Voltage
0.9
1.1
V
VIN1 Maximum Operating Voltage
10
V
VFB1
FB1 Reference Voltage
q
1.20
1.23
1.255
V
FB1 Input Bias Current
Current Flows into Pin
q
27
80
nA
IQ1
VIN1 Quiescent Current
VSHDN1 = 1.5V
3
4.5
mA
VIN1 Quiescent Current in Shutdown
VSHDN1 = 0V, VIN1 = 2V
0.01
0.5
µA
VSHDN1 = 0V, VIN1 = 5V
0.01
1.0
µA
FB1 Reference Line Regulation
1.5V
≤ VIN1 ≤ 10V
0.02
0.2
%/V
Switching Frequency
q
1
1.4
1.9
MHz
Maximum Duty Cycle
q
82
86
%
Switch Current Limit
(Note 3)
550
800
mA
Switch VCESAT
ISW = 300mA
300
350
mV
Switch Leakage Current
VSW = 5V
0.01
1
µA
SHDN1 Input Voltage High
1
V
SHDN1 Input Voltage Low
0.3
V
SHDN1 Input Bias Current
VSHDN1 = 3V, Current Flows into Pin
25
50
µA
VSHDN1 = 0V, Current Flows into Pin
0.01
0.1
µA
Linear Regulator Controller
IQ2
VIN2 Quiescent Current
q
512
19
mA
VFB2
FB2 Reference Voltage
1.203
1.210
1.217
V
q
1.198
1.210
1.222
V
FB2 Line Regulation
10V
≤ VIN2 ≤ 20V
q
0.01
0.03
%/V
FB2 Input Bias Current
FB2 = VFB2, Current Flows out of Pin
q
–0.6
–4
µA


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