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參數(shù)資料
| 型號(hào)： | LT1301IS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
| 中文描述： | 0.75 A SWITCHING REGULATOR, 155 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 286K |
| 代理商： | LT1301IS8 |
1
LT1301
I
12V at 120mA from 5V or 3.3V Supply
I
Supply Voltage as Low as 1.8V
I
Better High Current Efficiency Than CMOS
I
Up to 89% Efficiency
I
120
μ
A Quiescent Current
I
Shutdown to 10
μ
A
I
Programmable 5V or 12V Output
I
Low V
CESAT
Switch: 170mV at 1A Typical
I
I
LIM
Pin Programs Peak Switch Current
I
Uses Inexpensive Surface Mount Inductors
I
8-Lead DIP or SOIC Package
APPLICATIO
S
U
I
Flash Memory V
PP
Generator
I
Palmtop Computers
I
Portable Instruments
I
Bar-Code Scanners
I
Personal Digital Assistants
I
PCMCIA Cards
The LT1301 is a micropower step-up DC/DC converter that
utilizes Burst Mode operation. The device can deliver 5V
or 12V from a two-cell battery input. It features program-
mable 5V or 12V output via a logic-controlled input, no-
load quiescent current of 120
μ
A and a shutdown pin which
reduces supply current to 10
μ
A. The on-chip power switch
has a low 170mV saturation voltage at a switch current of
1A, a four-fold reduction over prior designs. A 155kHz
internal oscillator allows the use of extremely small sur-
face mount inductors and capacitors. Operation is guaran-
teed at 1.8V input. This allows more energy to be extracted
from the battery, increasing operating life. The I
LIM
pin can
be used for soft start or to program peak switch current
with a single resistor allowing the use of even smaller
inductors in lighter load applications. The LT1301 is
available in an 8-lead SOIC package, minimizing board
space requirements. For a selectable 3.3V/5V step-up
converter, please see the LT1300. For higher output
power, see the LT1302.
DESCRIPTIO
N
U
FEATURES
TYPICAL APPLICATIO
S
N
U
Micropower High Efficiency
5V/12V Step-Up DC/DC
Converter for Flash Memory
LT1300 F2
Figure 1. 3.3V/5V to 12V Step-Up Converter
1ms/DIV
V
= 5V, V
OUT
= 12V
LOAD = 100
Output Voltage
12V
V
2V/DIV
LT1301 TAO1
Efficiency
LOAD CURRENT (mA)
10
100
300
LT1301 TA2
1
0
72
74
E
76
78
80
82
90
84
86
88
V
IN
= 5V
V
IN
= 3.3V
L1 = COILCRAFT DO3316-333
OR SUMIDA CD73-330KC
D1 = 1N5817 OR MOTOROLA
MBRS130LT3
C1 = AVX TPSD476M016R0100
OR SANYO OS-CON 165A47M
C2 = AVX TPSD336M020R0100
OR SANYO OS-CON 205A33M
SHUTDOWN
10V/DIV
Burst Mode is a trademark of Linear Technology Corporation.
C2
33μF
20V
12V
OUTPUT
+
L1
33μH
D1
C1
47μF
SW
I
LIM
GND
PGND
SENSE
LT1301
SELECT
LT1301 F1
5V
OR
3.3V
SHDN
SHUTDOWN
N/C
V
IN
+
0.1μF*
*REQUIRED FOR 5V OUTPUT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1301 | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
| LT1301C | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
| LT1301CN8 | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
| LT1301CS8 | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
| LT1301I | Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1301IS8#PBF | 功能描述:IC REG BOOST 5V/12V 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT1301IS8#TR | 功能描述:IC REG BOOST 5V/12V 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT1301IS8#TRPBF | 功能描述:IC REG BOOST 5V/12V 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT1302 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters |
| LT1302-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters |
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