LT3482 Просмотр технического описания (PDF) - Linear Technology
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LT3482 Datasheet PDF : 12 Pages
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LT3482
ABSOLUTE AXI U RATI GS
(Note 1)
Input Voltage (VIN)....................................................16V
VOUT1, SW Voltage....................................................48V
VOUT2, PUMP, MONIN, APD Voltage..........................90V
FB Voltage...................................................................5V
SHDN, fSET, CTRL Voltage.........................................16V
MON Voltage.............................................................12V
Operating Temperature Range
(Note 2).................................................... –40°C to 85°C
Maximum Junction Temperature .......................... 125°C
Storage Temperature Range................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
NC 1
12 SHDN
APD 2
11 VIN
17
MONIN 3
10 GND
VOUT2 4
9 GND
5678
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W, θJC = 4.2°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3482EUD#PBF
LT3482IUD#PBF
LT3482EUD#TRPBF
LT3482IUD#TRPBF
LCFG
LCFG
16-Lead (3mm × 3mm) Plastic QFN
16-Lead (3mm × 3mm) Plastic QFN
0°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free parts, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3V, V⎯S⎯H⎯D⎯N = 3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Operating Voltage
2.5
V
Maximum Operating Voltage
16
V
Feedback Voltage
CTRL = 1.5V
1.215 1.235 1.255
V
● 1.200
1.260
V
Feedback Line Regulation
0.025 0.07
%/V
FB Pin Bias Current
●
30
100
nA
Supply Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
FB = 1.3V, Not Switching
V⎯S⎯H⎯D⎯N = 0
fSET = 0V
fSET = 2V
fSET = 0V
3.3
4.0
mA
0.1
0.5
µA
580
650
750
kHz
1.0
1.1
1.3
MHz
95
%
280
360
420
mA
Switch VCESAT
Switch Leakage Current
ISW = 150mA
SW = 5V
130
220
mV
2
µA
Schottky Forward Voltage
Schottky Reverse Leakage
SHDN Voltage High
ISCHOTTKY = 150mA
VOUT1 – SW = 50V
880
mV
5
µA
1.5
V
3482fa
2
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