- 您现在的位置：买卖IC网 > PDF目录98002 > LT1307IS8#TR (LINEAR TECHNOLOGY CORP) 1.25 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 PDF资料下载
参数资料
| 型号： | LT1307IS8#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.25 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SO-8 |
| 文件页数： | 1/20页 |
| 文件大小： | 369K |
| 代理商： | LT1307IS8#TR |
1
LT1307/LT1307B
1307fa
Single Cell Micropower
600kHz PWM DC/DC Converters
The LT
1307/LT1307B are micropower, fixed frequency
DC/DC converters that operate from an input voltage as
low as 1V. First in the industry to achieve true current
mode PWM performance from a single cell supply, the
LT1307 features automatic shifting to power saving Burst
Mode operation at light loads. High efficiency is main-
tained over a broad 100
A to 100mA load range. The
LT1307B does not shift into Burst Mode operation at light
loads, eliminating low frequency output ripple at the
expense of light load efficiency. The devices contain a low-
battery detector with a 200mV reference and shut down to
less than 5
A. No load quiescent current of the LT1307 is
50
A and the internal NPN power switch handles a 500mA
current with a voltage drop of just 295mV.
Unlike competitive devices, large electrolytic capacitors
are
not required with the LT1307/LT1307B in single cell
applications. The high frequency (600kHz) switching al-
lows the use of tiny surface mount multilayer ceramic
(MLC) capacitors along with small surface mount induc-
tors. The devices work with just 10
F of output capaci-
tance and require only 1
F of input bypassing.
The LT1307/LT1307B are available in 8-lead MSOP, PDIP
and SO packages.
s
Uses Small Ceramic Capacitors
s
50
A Quiescent Current (LT1307)
s
1mA Quiescent Current (LT1307B)
s
Operates with VIN as Low as 1V
s
600kHz Fixed Frequency Operation
s
Starts into Full Load
s
Low Shutdown Current: 3
A
s
Low-Battery Detector
s
3.3V at 75mA from a Single Cell
s
Automatic Burst Mode
Operation at
Light Load (LT1307)
s
Continuous Switching at Light Load (LT1307B)
s
Low VCESAT Switch: 295mV at 500mA
s
Pagers
s
Cordless Telephones
s
GPS Receivers
s
Battery Backup
s
Portable Electronic Equipment
s
Glucose Meters
s
Diagnostic Medical Instrumentation
Burst Mode is a registered trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Single Cell to 3.3V Converter Efficiency
LOAD CURRENT (mA)
0.1
70
EFFICIENCY
(%)
80
90
1
10
100
1307 TA01
60
50
VIN = 1.5V
VIN = 1V
VIN = 1.25V
VIN
SW
FB
LT1307
L1
10
H
D1
LBO
LBI
SHDN
SHUTDOWN
100k
R2
604k
1%
3.3V
75mA
R1
1.02M
1%
680pF
FOR 5V OUTPUT: R1 = 1M, R2 = 329k
C1: MURATA-ERIE GRM235Y5V105Z01
MARCON THCS50E1E105Z
TOKIN 1E105ZY5U-C103-F
C2: MURATA-ERIE GRM235Y5V106Z01
MARCON THCS50E1E105Z
TOKIN 1E106ZY5U-C304-F
1307 F01
C1
1
F
C2
10
F
1.5V
CELL
VC
GND
D1: MOTOROLA MBR0520L
L1: COILCRAFT D01608C-103
SUMIDA CD43-100
MURATA ERIE LQH3C100
Figure 1. Single Cell to 3.3V Boost Converter
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
相关PDF资料 |
PDF描述 |
|---|---|
| LT1508ISW#TR | POWER FACTOR CONTROLLER WITH POST REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO20 |
| LT1513IT7-2#PBF | 5.4 A BATTERY CHARGE CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PSFM7 |
| LT1513IR-2#PBF | 5.4 A BATTERY CHARGE CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PSSO7 |
| LT1640LCS8#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LT1932ES6#PBF | 0.78 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1308 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Cell High Current Micropower 600kHz Boost DC/DC Converter |
| LT1308A | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Current, Micropower Single Cell, 600kHz DC/DC Converters |
| LT1308A_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Current, Micropower Single Cell, 600kHz DC/DC Converters |
| LT1308ACF | 功能描述:IC REG BOOST 5V 1A 14TSSOP 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:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| LT1308ACF#PBF | 功能描述:IC REG BOOST 5V 1A 14TSSOP 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:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
发布紧急采购，3分钟左右您将得到回复。