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LT1109CN8-5#PBF

Description
Switching RegulatorMicropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V
CategoryPower/power management    The power supply circuit   
File Size197KB,9 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric Compare View All

LT1109CN8-5#PBF Overview

Switching RegulatorMicropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V

LT1109CN8-5#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionDIP,
Contacts8
Manufacturer packaging code05-08-1510 (N8)
Reach Compliance Codecompliant
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeVOLTAGE-MODE
Control TechnologyPULSE FREQUENCY MODULATION
Maximum input voltage5 V
Minimum input voltage3 V
JESD-30 codeR-PDIP-T8
JESD-609 codee3
length9.78 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current1.2 A
Nominal output voltage5 V
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height4.445 mm
surface mountNO
Switch configurationBOOST
Maximum switching frequency120 kHz
technologyBIPOLAR
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
Base Number Matches1
LT1109
Micropower Low Cost
DC/DC Converter
Adjustable and Fixed 5V, 12V
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Uses Off-the-Shelf Inductors
Only 33µH Inductor Required
Low Cost
3-Lead TO-92, SO8, or 8-Pin DIP
Adjustable or Fixed 5V or 12V Output
120kHz Oscillator
Only Three External Components Required
320µA I
Q
1.6V Minimum Start-Up Voltage
Logic Controlled Shutdown
The LT1109 is a simple step-up DC/DC converter. Avail-
able in 8-pin SO, 3-lead TO-92 (fixed output only) or
miniDIP packages, the devices require only three external
components to construct a complete DC/DC converter.
Current drain is just 320µA at no load, making the device
ideal for cost-sensitive applications where standby cur-
rent must be kept to a minimum.
The LT1109-5 can deliver 5V at 100mA from a 3V input
and the LT1109-12 can deliver 12V at 60mA from a 5V
input. The 8-pin versions also feature a logic controlled
SHUTDOWN pin that turns off the oscillator when taken
low. The gated-oscillator design requires no frequency
compensation components. The high frequency 120kHz
oscillator permits the use of small surface mount induc-
tors and capacitors. For a 5V to 12V at 120mA converter,
see the LT1109A. Foa a 5V to 12V at 200mA converter
with 20µA shutdown current, see the LT1301.
APPLICATI
s
s
s
s
s
s
s
S
Flash Memory VPP Generators
3V to 5V Converters
5V to 12V Converters
Disk Drives
PC Plug-In Cards
Peripherals
Battery-Powered Equipment
TYPICAL APPLICATI
L1
¦
33µH
3
V
IN
5V
1
SW
V
IN
SENSE
8
MBRS120T3
All Surface Mount
Flash Memory VPP Generator
15
Output Voltage
V
IN
= 5V
12
OUTPUT VOLTAGE (V)
V
OUT
12V
80mA
9
SHUTDOWN
5V/DIV
6
1ms/DIV
LT1109 • TA02
LT1109CS8-12
7
SHUTDOWN*
GND
4
SHUTDOWN
PROGRAM
LT1109 • TA01
+
C1**
22µF
16V
3
* 8-PIN PACKAGE ONLY
¦
L1 = SUMIDA CD54-330LC (I
OUT
= 80mA)
COILTRONICS CTX33-1 (80mA)
MURATA-ERIE LQH4N330K (I
OUT
= 50mA)
ISI LCS2414-330K (I
OUT
= 50mA)
**C1 = MATSUO 267M1602226 OR EQUIVALENT
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
LT1109 • TPC01
U
Flash Memory Program Output
V
OUT
5V/DIV
OV
UO
UO
1

LT1109CN8-5#PBF Related Products

LT1109CN8-5#PBF LT1109CN8-12#PBF LT1109CS8#PBF LT1109CS8#TR LT1109CS8-12#TR LT1109CS8-5#TR
Description Switching RegulatorMicropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V Switching RegulatorMicropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V Switching RegulatorMicropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V Switching Regulator LT1109 - Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V Switching Regulator LT1109 - Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V Switching Regulator LT1109 - Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V
Is it Rohs certified? conform to conform to conform to incompatible incompatible incompatible
Maker ADI ADI ADI ADI ADI ADI
package instruction DIP, DIP, SOP, SOP, SOP8,.25 SOP, SOP, SOP8,.25
Reach Compliance Code compliant compliant compliant not_compliant not_compliant not_compliant
JESD-30 code R-PDIP-T8 R-PDIP-T8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e3 e3 e0 e0 e0
Number of terminals 8 8 8 8 8 8
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP DIP SOP SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
surface mount NO NO YES YES YES YES
Terminal surface MATTE TIN MATTE TIN MATTE TIN Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form THROUGH-HOLE THROUGH-HOLE GULL WING GULL WING GULL WING GULL WING
Terminal pitch 2.54 mm 2.54 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR - SWITCHING REGULATOR -
control mode VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE - VOLTAGE-MODE
length 9.78 mm 9.78 mm 4.9 mm - 4.9 mm -
Humidity sensitivity level 1 1 1 - 1 -
Number of functions 1 1 1 - 1 -
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C - 70 °C
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED 260 - 235 -
Maximum seat height 4.445 mm 4.445 mm 1.75 mm - 1.75 mm -
Switch configuration BOOST BOOST BOOST - BOOST -
Maximum switching frequency 120 kHz 120 kHz 120 kHz 150 kHz - 150 kHz
technology BIPOLAR BIPOLAR BIPOLAR BIPOLAR - BIPOLAR
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL - COMMERCIAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED 30 - 20 -
width 7.62 mm 7.62 mm 3.9 mm - 3.9 mm -
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