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LT1308ACF#PBF

更新时间： 2024-09-10 13:09:35
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
8页 270K
描述
IC 4.5 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO14, 4.40 MM, LEAD FREE, PLASTIC, TSSOP-14, Switching Regulator or Controller

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LT1308ACF#PBF 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：TSSOP包装说明：TSSOP, TSSOP14,.25
针数：14Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.67模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：10 V最小输入电压：1 V
标称输入电压：1.1 VJESD-30 代码：R-PDSO-G14
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：14最高工作温度：70 °C
最低工作温度：最大输出电流：4.5 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP14,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BOOST最大切换频率：750 kHz
技术：BIPOLAR温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：4.4 mm
Base Number Matches：1

LT1308ACF#PBF 数据手册

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Final Electrical Specifications  
LT1308  
Single Cell High Current  
Micropower 600kHz  
Boost DC/DC Converter  
January 1998  
U
DESCRIPTION  
FEATURES  
The LT®1308 is a micropower, fixed frequency boost  
DC/DC converter that operates from an input voltage as  
low as 1V. Capable of delivering 5V at load current of 1A  
from a single Li-Ion cell, the LT1308 also features power  
savingBurstModeoperationatlightloads. Highefficiency  
is maintained over a broad 1mA to 1A load range.  
■
5V at 1A from a Single Li-Ion Cell  
■
3.3V at 300mA from a Single NiCd Cell  
■
Low Quiescent Current: 100µA  
■
Operates with VIN as Low as 1V  
■
Fixed Frequency Operation: 600kHz  
■
Current Mode PWM Delivers Low Output Ripple  
■
Guaranteed Start-Up into Full Load  
The device contains a low-battery detector with a 200mV  
reference and shuts down to less than 5µA quiescent  
current. No-load quiescent current is 100µA and the  
internal NPN power switch handles a 2A current with a  
voltage drop of just 300mV.  
■
Low Shutdown Current: 3µA  
■
Low-Battery Comparator  
Automatic Burst ModeTM Operation at Light Load  
■
■
Low VCESAT  
SwitUch: 300mV at 2A  
High frequency 600kHz switching allows the use of small,  
surface mount components. The LT1308’s current mode  
architecture provides fast response to load and line varia-  
tions. The device is available in an 8-lead SO package.  
APPLICATIONS  
■
GSM Terminals  
Digital Cameras  
Answer-Back Pagers  
Cordless Telephones  
DECT Phones  
GPS Receivers  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
■
■
■
Battery Backup Supplies  
U
TYPICAL APPLICATION  
Converter Efficiency  
4.2V TO 3V  
95  
L1  
V
= 3.6V  
IN  
4.7µH  
90  
85  
80  
75  
70  
65  
V
SHDN  
LBI  
IN  
V
= 4.2V  
IN  
SW  
R1  
301k  
LT1308  
D1  
Li-Ion  
CELL  
5V  
1A  
C1  
10µF  
LBO  
FB  
V
GND  
C
V
= 3V  
IN  
+
C2  
100µF  
R2  
100k  
R
C
47k  
C
C
22nF  
1308F01  
C1: CERAMIC  
C2: AVX TPS SERIES  
1
10  
100  
1000  
D1: INTERNATIONAL RECTIFIER 10BQ015  
L1: COILTRONICS CTX5-1  
LOAD CURRENT (mA)  
1308 F01a  
COILCRAFT DO3316-472  
Figure 1. Single Li-Ion Cell to 5V/1A DC/DC Converter  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
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