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| 型号： | LT1301IS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST 5V/12V 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V，12V |
| 输入电压： | 1.8 V ~ 10 V |
| PWM 型： | Burst Mode? |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LT1301
Micropower High Efficiency
5V/12V Step-Up DC/DC
Converter for Flash Memory
FEATURES
DESCRIPTIO N
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s
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12V at 120mA from 5V or 3.3V Supply
Supply Voltage as Low as 1.8V
Better High Current Efficiency Than CMOS
Up to 89% Efficiency
120 μ A Quiescent Current
Shutdown to 10 μ A
Programmable 5V or 12V Output
Low V CESAT Switch: 170mV at 1A Typical
I LIM Pin Programs Peak Switch Current
Uses Inexpensive Surface Mount Inductors
8-Lead DIP or SOIC Package
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
APPLICATIO N S
from the battery, increasing operating life. The I LIM pin can
be used for soft start or to program peak switch current
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Flash Memory V PP Generator
Palmtop Computers
Portable Instruments
Bar-Code Scanners
Personal Digital Assistants
PCMCIA Cards
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.
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO N S N
5V
OR
3.3V
+ C1
47μF
L1
33μH
SELECT SENSE
LT1301
V IN SW
D1
12V
OUTPUT
+ C2
33μF
0.1μF*
12V
V OUT
2V/DIV
Output Voltage
90
88
86
84
82
Efficiency
V IN = 5V
V IN = 3.3V
SHUTDOWN SHDN
PGND
I LIM
GND
N/C
20V
SHUTDOWN
80
78
10V/DIV
76
*REQUIRED FOR 5V OUTPUT
L1 = COILCRAFT DO3316-333
LT1301 F1
V IN = 5V, V OUT = 12V
LOAD = 100 ?
1ms/DIV
LT1301 TAO1
74
72
OR SUMIDA CD73-330KC
0
D1 = 1N5817 OR MOTOROLA
1
10 100
300
MBRS130LT3
C1 = AVX TPSD476M016R0100
OR SANYO OS-CON 165A47M
C2 = AVX TPSD336M020R0100
OR SANYO OS-CON 205A33M
Figure 1. 3.3V/5V to 12V Step-Up Converter
LOAD CURRENT (mA)
LT1301 TA2
LT1300 F2
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1302 | 制造商:LINER 制造商全称: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 制造商全称:Linear Technology 功能描述:Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters |
| LT1302CN8 | 功能描述:IC REG BOOST ADJ 0.12A 8DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1302CN8#PBF | 功能描述:IC REG BOOST ADJ 0.12A 8DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1302CN8-5 | 功能描述:IC REG BOOST 5V 0.6A 8DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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