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LTC3891EUDC#PBF

更新时间： 2024-11-24 13:09:51
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
36页 541K
描述
LTC3891 - Low IQ, 60V Synchronous Step-Down Controller; Package: QFN; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3891EUDC#PBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC20,.12X.16,20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.4Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.80V TO 24V模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：60 V最小输入电压：4 V
标称输入电压：12 VJESD-30 代码：S-PQCC-N20
JESD-609代码：e3长度：4 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：标称输出电压：5.1 V
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC20,.12X.16,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：225
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：PUSH-PULL最大切换频率：900 kHz
技术：CMOS温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LTC3891EUDC#PBF 数据手册

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LTC3863  
60V Low I Inverting  
Q
DC/DC Controller  
DESCRIPTION  
FEATURES  
The LTC®3863 is a robust, inverting DC/DC PMOS control-  
ler optimized for automotive and industrial applications. It  
drives a P-channel power MOSFET to generate a negative  
output and requires just a single inductor to complete the  
circuit. Output voltages from –0.4V to –150V are typically  
achievable with higher voltages possible, only limited by  
external components.  
n
Wide Operating V Range: 3.5V to 60V  
IN  
OUT  
n
Wide Negative V  
Range: –0.4V to Beyond –150V  
n
n
n
n
n
Low Operating I = 70µA  
Q
Strong High Voltage MOSFET Gate Driver  
Constant Frequency Current Mode Architecture  
Verified FMEA for Adjacent Pin Open/Short  
Selectable High Efficiency Burst Mode® Operation or  
Pulse-Skipping Mode at Light Loads  
The LTC3863 offers excellent light load efficiency, draw-  
ing only 70μA quiescent current in a user programmable  
Burst Mode operation. Its peak current mode, constant  
frequency PWM architecture provides for good control of  
switching frequency and output current limit. The switch-  
ing frequency can be programmed from 50kHz to 850kHz  
with an external resistor and can be synchronized to an  
external clock from 75kHz to 750kHz.  
n
n
n
n
n
n
n
Programmable Fixed Frequency: 50kHz to 850kHz  
Phase-Lockable Frequency: 75kHz to 750kHz  
Accurate Current Limit  
Programmable Soft-Start or Voltage Tracking  
Internal Soft-Start Guarantees Smooth Start-Up  
Low Shutdown I = 7µA  
Q
Available in Small 12-Lead Thermally Enhanced  
MSOP and DFN Packages  
The LTC3863 offers programmable soft-start or output  
tracking. Safety features include overvoltage, overcurrent  
and short-circuit protection including frequency foldback.  
APPLICATIONS  
n
Industrial and Automotive Power Supplies  
Telecom Power Supplies  
The LTC3863 is available in thermally enhanced 12-lead  
MSOP and 3mm × 4mm DFN packages.  
L, LT, LTC, LTM, OPTI-LOOP, Linear Technology, Burst Mode and the Linear logo are registered  
trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks  
are the property of their respective owners. Protected by U.S. Patents including 5731694.  
n
n
Distributed Power Systems  
TYPICAL APPLICATION  
4.5V to 16V Input, –5V/1.7A Output, 350kHz Inverting Converter  
Efficiency  
V
IN  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
9
8
7
6
5
4
3
2
1
0
4.5V TO 16V  
+
10µF  
25V  
×2  
V
V
= 12V  
IN  
OUT  
0.47µF  
100µF  
20V  
= –5V  
CAP  
RUN  
V
IN  
350kHz  
27nF  
16mΩ  
Si7129  
PLLIN/MODE  
SS  
EFFICIENCY  
SENSE  
GATE  
14.7k  
V
OUT  
PULSE-SKIPPING MODE  
Burst Mode OPERATION  
ITH  
–5V  
LTC3863  
150µF  
33µF  
×2  
1.7A  
61.9k  
B540C  
16V  
+
FREQ  
10µH  
×2  
511k  
SGND  
POWER LOSS  
0.2  
V
FBN  
80.6k  
3863 TA01a  
68pF  
V
0.002  
0.02  
2
FB  
PGND  
LOAD CURRENT (A)  
3863 TA01b  
3863f  
1
For more information www.linear.com/3863  
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中文翻译

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LTC3891EUDC#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3891EUDC#TRPBF Linear

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