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參數(shù)資料
| 型號： | LT1109-12 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| 中文描述： | 微低成本DC / DC轉(zhuǎn)換器可調(diào)節(jié)和固定5V，12V的 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 212K |
| 代理商： | LT1109-12 |
LT1109
1
Micropower Low Cost
DC/DC Converter
Adjustable and Fixed 5V, 12V
All Surface Mount
Flash Memory VPP Generator
U
S
A
O
PPLICATI
I
Flash Memory VPP Generators
I
3V to 5V Converters
I
5V to 12V Converters
I
Disk Drives
I
PC Plug-In Cards
I
Peripherals
I
Battery-Powered Equipment
U
A
O
PPLICATI
TYPICAL
I
Uses Off-the-Shelf Inductors
I
Only 33
μ
H Inductor Required
I
Low Cost
I
3-Lead TO-92, SO8, or 8-Pin DIP
I
Adjustable or Fixed 5V or 12V Output
I
120kHz Oscillator
I
Only Three External Components Required
I
320
μ
A I
Q
I
1.6V Minimum Start-Up Voltage
I
Logic Controlled Shutdown
D
U
ESCRIPTIO
S
FEATURE
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 320
μ
A 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 20
μ
A shutdown current, see the LT1301.
SHUTDOWN
5V/DIV
OV
V
5V/DIV
1ms/DIV
LT1109 TA02
L1
33
μ
H
LT1109 TA01
+
GND
SW
SENSE
LT1109CS8-12
V
12V
80mA
MBRS120T3
V
IN
V
IN
5V
SHUTDOWN PROGRAM
SHUTDOWN*
* 8-PIN PACKAGE ONLY
L1 = SUMIDA CD54-330LC (I
= 80mA)
COILTRONICS CTX33-1 (80mA)
MURATA-ERIE LQH4N330K (I
ISI LCS2414-330K (I
= 50mA)
**C1 = MATSUO 267M1602226 OR EQUIVALENT
= 50mA)
=
1
7
3
8
C1**
22
μ
F
16V
4
Flash Memory Program Output
OUTPUT CURRENT (mA)
0
0
O
3
6
9
12
15
10
100
LT1109 TPC01
20 30 40 50 60 70 80 90
V
IN
= 5V
Output Voltage
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1109CS8 | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1109CN8 | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1109CZ-12 | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1109CZ-5 | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1109 | Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1109-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1109A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V |
| LT1109A_03 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V |
| LT1109A-12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V |
| LT1109A-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V |
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