參數(shù)資料
型號(hào): LT3663EDCB-5#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 2.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 2 X 3 MM, LEAD FREE, PLASTIC, DFN-8
文件頁(yè)數(shù): 12/16頁(yè)
文件大小: 188K
代理商: LT3663EDCB-5#PBF
LT3663
5
3663fb
TYPICAL PERFORMANCE CHARACTERISTICS
BOOST Pin Current
Boost Diode Vf
TA = 25°C, unless otherwise noted.
SWITCH CURRENT (A)
BOOST
PIN
CURRENT
(mA)
35
30
25
20
3653 G07
0
5
15
10
0
0.2
0.4
0.5
0.8
1.0
1.2
DIODE CURRENT (mA)
BOOST
DIODE
V
F(V)
1.4
1.2
1
0.8
3653 G09
0
0.2
0.6
0.4
0
50
100
150
200
250
300
SWITCH CURRENT (A)
SWITCH
VOL
TAGE
DROP
(mV)
400
350
3663 G01
0
50
100
150
200
250
300
0
0.2
0.4
0.6
0.8
1
1.2
125°C
–45°C
25°C
Switch Voltage Drop
PIN FUNCTIONS
BOOST: The BOOST pin is used to provide a drive voltage,
higher than the input voltage, to the internal power switch.
The BOOST pin is also internally connected to the cathode
of the BOOST diode.
GND (Exposed Pad Pin 9) : Ground. The exposed pad
must be soldered to the PCB and electrically connected
to ground. Use a large ground plane and thermal vias to
optimize thermal performance.
FB (LT3663): The LT3663 regulates the FB pin to 0.8V.
Connect the feedback resistor divider tap to this pin.
ILIM: Output Current Limit Program Pin. Connect a resistor
to ground to program the regulator output current limit.
ISENSE: The ISENSE pin is the positive input to the internal
output current limit sense resistor. The ISENSE pin is also
the anode to the internal BOOST diode.
RUN: The Run pin is used to put the LT3663 into shutdown
mode. Tie to ground to shut down the LT3663. Tie to 2.5V
or more for normal operation. If the shutdown feature is
not used, connect this pin to VIN.
SW: The SW pin is the output of the internal power switch.
Connect this pin to the inductor, catch diode and boost
capacitor.
VIN: The VIN pin supplies current to the LT3663’s internal
regulator and internal power switch. Capacitively bypass
the pin to ground.
VOUT: The VOUT pin is connected to the negative terminal
of the internal output current limit sense resistor.
VOUTS (LT3663-X): Output Voltage Sense Pin. Connect to
the positive terminal of the output capacitor.
相關(guān)PDF資料
PDF描述
LT3663EMS8E#PBF 2.5 A SWITCHING REGULATOR, 1650 kHz SWITCHING FREQ-MAX, PDSO8
LT3663IDCB-5#PBF 2.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO8
LT3663EDCB-5#TRPBF 2.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO8
LT3663IMS8E-5#PBF 2.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO8
LT3663EMS8E-3.3#TRPBF 2.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO8
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