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LT1934IDCB-1#PBF

更新时间： 2024-11-30 14:52:47
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
20页 229K
描述
LT1934 - Micropower Step-Down Switching Regulators in ThinSOT; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C

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LT1934IDCB-1#PBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC6,.12,20
针数：6Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.08Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：34 V最小输入电压：4 V
标称输入电压：10 VJESD-30 代码：R-PDSO-N6
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：6最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：0.16 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC6,.12,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK技术：BIPOLAR
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：2 mmBase Number Matches：1

LT1934IDCB-1#PBF 数据手册

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LT1934/LT1934-1  
Micropower Step-Down  
Switching Regulators  
in ThinSOT and DFN  
FEATURES  
DESCRIPTION  
TheLT®1934isamicropowerstep-downDC/DCconverter  
with internal 400mA power switch, packaged in a low  
profile (1mm) ThinSOT. With its wide input range of 3.2V  
to 34V, the LT1934 can regulate a wide variety of power  
sources, from 4-cell alkaline batteries and 5V logic rails  
to unregulated wall transformers and lead-acid batteries.  
Quiescent current is just 12μA and a zero current shut-  
down mode disconnects the load from the input source,  
simplifying power management in battery-powered sys-  
tems. Burst Mode® operation and the low drop internal  
power switch result in high efficiency over a broad range  
of load current.  
n
Wide Input Voltage Range: 3.2V to 34V  
Micropower Operation: I = 12μA  
n
Q
n
n
n
n
n
n
n
5V at 250mA from 6.5V to 34V Input (LT1934)  
5V at 60mA from 6.5V to 34V Input (LT1934-1)  
3.3V at 250mA from 4.5V to 34V Input (LT1934)  
3.3V at 60mA from 4.5V to 34V Input (LT1934-1)  
Low Shutdown Current: <1μA  
Low V  
Switch: 200mV at 300mA  
CESAT  
Low Profile (1mm) SOT-23 (ThinSOT™) and  
(2mm × 3mm × 0.8mm) 6-Pin DFN Package  
APPLICATIONS  
The LT1934 provides up to 300mA of output current. The  
LT1934-1 has a lower current limit, allowing optimum  
choice of external components when the required output  
current is less than 60mA. Fast current limiting protects  
the LT1934 and external components against shorted  
outputs, even at 34V input.  
n
Wall Transformer Regulation  
n
Automotive Battery Regulation  
n
Standby Power for Portable Products  
Distributed Supply Regulation  
Industrial Control Supplies  
n
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
3.3V Step-Down Converter  
Efficiency  
100  
D2  
LT1934  
IN  
V
= 12V  
90  
80  
70  
60  
50  
0.22μF  
BOOST  
L1  
V
= 5V  
47μH  
OUT  
V
OUT  
V
IN  
V
IN  
SW  
3.3V  
4.5V TO 34V  
250mA  
C2  
2.2μF  
V
OUT  
= 3.3V  
D1  
LT1934  
10pF  
1M  
+
C1  
100μF  
ON OFF  
SHDN  
GND  
FB  
604k  
C1: SANYO 4TPB100M  
1934 TA01  
0.1  
1
10  
100  
C2: TAIYO YUDEN GMK325BJ225MN  
D1: ON SEMICONDUCTOR MBR0540  
D2: CENTRAL CMDSH-3  
LOAD CURRENT (mA)  
1934 TA02  
L1: SUMIDA CDRH4D28-470  
1934fe  
1
1234567...20

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