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LTC3450 Datenblatt(PDF) 2 Page - Linear Technology

Teilenummer LTC3450
Bauteilbeschribung  Triple Output Power Supply for Small TFT-LCD Displays
PDF  12 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3450 Datenblatt(HTML) 2 Page - Linear Technology

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LTC3450
2
3450fa
VIN, SW.......................................................... – 0.3 to 7V
SHDN, MODE ................................................. – 0.3 to 7V
VOUT .......................................................................... –0.3 to 5.5V
VNEG ........................................................................ –17V to 0.3V
Operating Temperature Range
LTC3450E (Note 4) ............................. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
ORDER PART
NUMBER
TJMAX = 125°C, θJA = 68°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3450EUD
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1) (Referred to GND)
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, VOUT = 5.2V unless otherwise noted.
16 15 14 13
5
6
7
8
TOP VIEW
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
EXPOSED PAD IS VNEG (PIN 17)
MUST BE SOLDERED TO PCB
9
10
11
12
17
4
3
2
1
C3+
C3–
VNEG
MODE
V2X
C1+
C1–
GND
UD PART MARKING
LAAC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
●
1.5
4.6
V
VIN Quiescent Supply Current
MODE = VIN
75
130
µA
VOUT Quiescent Supply Current
MODE = VIN
80
µA
VIN Quiescent Supply Current
MODE = GND
30
50
µA
VOUT Quiescent Supply Current
MODE = GND
13
µA
VIN Quiescent Current
SHDN = GND, VOUT OPEN
0.01
2
µA
5V Boost Regulator
VOUT Output Voltage
Load on VOUT = 5mA
5.049
5.100
5.151
V
VOUT Efficiency
Load on VOUT = 5mA, (Note 2)
90
%
VOUT Maximum Output Current
L = 47µH, (Note 2)
11
mA
Switch Current Limit
90
120
mA
Switching Frequency—Boost
MODE = VIN
550
kHz
Switching Frequency—Boost
MODE = GND
15.62
kHz
Charge Pumps
V2X Output Voltage
Load on V2X = 100µA
●
9.792
10.1
10.608
V



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