Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LT1109 Datasheet(PDF) 2 Page - Linear Technology

Part No. LT1109
Description  Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V
Download  8 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo 

LT1109 Datasheet(HTML) 2 Page - Linear Technology

   
Zoom Inzoom in Zoom Outzoom out
 2 / 8 page
background image
LT1109
2
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
Switch Off
q
320
550
µA
Minimum Start-Up Voltage
1.6
V
at VOUT Pin (Z Package)
VIN
Input Voltage (N8, S8 Package)
q
3V
Comparative Trip Point Voltage
LT1109
q
1.20
1.25
1.30
V
VOUT
Output Voltage
LT1109-5; 3V
≤ VIN ≤ 5V
q
4.75
5.00
5.25
V
LT1109-12; 3V
≤ VIN ≤ 12V
q
11.52
12.00
12.55
V
Comparator Hysteresis
LT1109
q
8
12.5
mV
Output Voltage Ripple
LT1109-5
q
25
50
mV
LT1109-12
q
60
120
mV
fOSC
Oscillator Frequency
100
120
140
kHz
q
90
150
kHz
tON
Switch ON Time
3.3
4.2
5.3
µs
q
3.0
5.5
µs
DC
Duty Cycle
Full Load
q
45
50
60
%
VCESAT
Switch Saturation Voltage
ISW = 500mA
0.4
0.7
V
LT1109-5: VIN = 3V; LT1109-12: VIN = 5V q
0.5
0.8
V
TA = 25°C, VIN = 3V (LT1109CN8, LT1109CS8), unless otherwise specified.
ELECTRICAL C
C
HARA TERISTICS
PACKAGE/ORDER I FOR ATIO
1
2
3
4
8
7
6
5
TOP VIEW
VIN
NC
SW
GND
SENSE
SHUTDOWN
NC
NC
N8 PACKAGE
8-LEAD PLASTIC DIP
LT1109 • PO102
1
2
3
4
8
7
6
5
TOP VIEW
SENSE
SHUTDOWN
NC
NC
VIN
NC
SW
GND
S8 PACKAGE
8-LEAD PLASTIC SOIC
LT1109 • PO103
TJMAX = 100°C, θJA = 130°C/W
TJMAX = 100°C, θJA = 150°C/W
TJMAX = 100°C, θJA = 160°C/W
GND
2
SW
3
1
Z PACKAGE
3-LEAD TO-92 PLASTIC
BOTTOM VIEW
OUT
V
LT1109 • POI01
LT1109CZ-5
LT1109CZ-12
ORDER PART
NUMBER
ORDER PART
NUMBER
S8 PART
MARKING
ORDER PART
NUMBER
LT1109CS8
LT1109CS8-5
LT1109CS8-12
LT1109CN8
LT1109CN8-5
LT1109CN8-12
1109
10905
10912
Operating Temperature Range ..................... 0
°C to 70°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300
°C
Switch Current ........................................................ 1.2A
A
G
A
U
A
R
BSOLUTEXI
TI
S
(Voltages Referred to GND Pin)
Supply Voltage (VOUT) .............................. –0.4V to 20V
SW Pin Voltage .......................................... – 0.4V to 50V
SHUTDOWN Pin Voltage ......................................... 6.0V
Maximum Power Dissipation ............................. 300mW


Html Pages

1  2  3  4  5  6  7  8 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn