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LT1109A Datasheet(PDF) 4 Page - Linear Technology

Part No. LT1109A
Description  Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1109A Datasheet(HTML) 4 Page - Linear Technology

   
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LT1109A
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
I
DAGRA
BLOCK
S
LT1109A (Adjustable)
TEMPERATURE (°C)
–50
12.3
12.2
12.1
12.0
11.9
11.8
11.7
25
75
1109A G09
–25
0
50
100
125
LT1109A-12
Output Voltage
LT1109A-5, LT1109A-12
+
VIN
1.25V
REF
R2
250k
COMP
A1
R1*
SW
SENSE
DRIVER
SHUTDOWN
+
VIN
1.25V
REF
COMP
A1
SW
FB
DRIVER
*LT1109A-5: R1 = 83k
LT1109A-12: R1 = 29k
1109A BD
120kHz
OSC
120kHz
OSC
GND
PGND
PGND
SHUTDOWN
Q1
Q1
GND
tON (µs)
3.0
160
150
140
130
120
110
100
90
80
7.0
1109A G10
4.0
5.0
6.0
8.0
3.5
4.5
5.5
6.5
7.5
0°C
≤ TA ≤ 70°C
TA= 25°C
Minimum/Maximum
Oscillator Frequency vs tON


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