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LT1612EMS8#TRPBF PDF预览

LT1612EMS8#TRPBF

更新时间: 2024-09-15 20:01:47
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
12页 250K
描述
LT1612 - Synchronous, Step-Down 800kHz PWM DC/DC Converter; Package: MSOP; Pins: 8; Temperature Range: -40°C to 85°C

LT1612EMS8#TRPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:MSOP包装说明:TSSOP,
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.18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:5.5 V最小输入电压:2 V
标称输入电压:3 VJESD-30 代码:S-PDSO-G8
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出电流:0.9 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE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表面贴装:YES
切换器配置:BUCK最大切换频率:1100 kHz
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:30
宽度:3 mmBase Number Matches:1

LT1612EMS8#TRPBF 数据手册

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LT1612  
Synchronous, Step-Down  
800kHz PWM  
DC/DC Converter  
U
DESCRIPTIO  
FEATURES  
The LT®1612 is an 800kHz, synchronous step-down DC/  
DC converter that operates from an input voltage as low  
as 2V. Internal 0.45switches deliver output currents up  
to 500mA, and the 800kHz switching frequency allows the  
use of small, low value ceramic input and output capaci-  
tors. Input voltage ranges from 5.5V down to 2V and  
output voltage can be set as low as the 620mV reference.  
The device features Burst ModeTM operation, keeping  
efficiency high at light loads. Burst Mode operation can be  
defeated by pulling the MODE pin high, enabling constant  
switching throughout the load range for low noise.  
Operates from Input Voltage As Low As 2V  
Internal 0.7A Synchronous Switches  
Uses Ceramic Input and Output Capacitors  
620mV Reference Voltage  
800kHz Fixed Frequency Switching  
Programmable Burst Mode Operation  
Low Quiescent Current: 160µA  
8-Lead MSOP or SO Package  
U
APPLICATIO S  
Portable Devices  
No-loadquiescentcurrentis160µAandshutdowncurrent  
is less than 1µA. The device is available in 8-lead SO and  
MSOP packages.  
Lithium-Ion Step-Down Converters  
5V to 3.3V Conversion  
2-Cell Alkaline Step-Down Converters  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Efficiency for LT1612 vs Linear Regulator  
VOUT = 1.2V  
0.1µF  
90  
V
IN  
L1  
BOOST  
SW  
V
IN  
2V  
10µH  
V
OUT  
SHDN  
1.2V  
80  
70  
60  
50  
40  
30  
V
V
= 2V  
= 3V  
IN  
IN  
500mA  
LT1612  
100pF  
MODE  
FB  
C1  
10µF  
V
C
GND  
V
V
= 2V (LINEAR)  
IN  
R1  
215k  
1%  
C2  
R2  
232k  
1%  
33.2k  
330pF  
68µF  
3.15V  
= 3V (LINEAR)  
100  
IN  
C1: TAIYO-YUDEN JMK325BJ106MN  
C2: PANASONIC EEFCDOF680R  
L1: SUMIDA CD43-100  
1612 F01a  
10  
500  
LOAD CURRENT (mA)  
1612 • F01b  
Figure 1. 2V to 1.2V Converter  
sn1612 1612fs  
1

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