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LTC1159CN

更新时间： 2024-01-08 20:32:14
品牌 Logo 应用领域
凌特 - Linear 稳压器开关光电二极管
页数 文件大小 规格书
20页 400K
描述
High Efficiency Synchronous Step-Down Switching Regulators

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中文翻译

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LTC1159CN 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP, SOP16,.25
针数：16Reach Compliance Code：compliant
风险等级：5.09模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：CONSTANT OFF TIME
最大输入电压：40 V最小输入电压：4 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：9.906 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.752 mm表面贴装：YES
切换器配置：BUCK最大切换频率：250 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.899 mm
Base Number Matches：1

LTC1159CN 数据手册

 浏览型号LTC1159CN的Datasheet PDF文件第2页浏览型号LTC1159CN的Datasheet PDF文件第3页浏览型号LTC1159CN的Datasheet PDF文件第4页浏览型号LTC1159CN的Datasheet PDF文件第5页浏览型号LTC1159CN的Datasheet PDF文件第6页浏览型号LTC1159CN的Datasheet PDF文件第7页 
LTC1159/LTC1159-3.3/LTC1159-5  
High Efficiency Synchronous  
Step-Down Switching Regulators  
U
DESCRIPTIO  
EATURE  
S
F
TheLTC®1159seriesisafamilyofsynchronousstep-down  
switching regulator controllers featuring automatic Burst  
ModeTM operation to maintain high efficiencies at low  
output currents. These devices drive external complemen-  
tarypowerMOSFETsatswitchingfrequenciesupto250kHz  
using a constant off-time current-mode architecture.  
■
■
■
■
■
Operation from 4V to 40V Input Voltage  
Ultra-High Efficiency: Up to 95%  
20µA Supply Current in Shutdown  
High Efficiency Maintained Over Wide Current Range  
Current Mode Operation for Excellent Line and Load  
Transient Response  
■
■
■
■
■
Very Low Dropout Operation: 100% Duty Cycle  
Short-Circuit Protection  
Synchronous FET Switching for High Efficiency  
Adaptive Non-Overlap Gate Drives  
Available in SSOP and SO Packages  
A separate pin and on-board switch allow the MOSFET  
driver power to be derived from the regulated output  
voltageprovidingsignificantefficiencyimprovementwhen  
operating at high input voltages. The constant off-time  
current-mode architecture maintains constant ripple cur-  
rent in the inductor and provides excellent line and load  
transient response. The output current level is user pro-  
grammable via an external current sense resistor.  
O U  
PPLICATI  
S
A
■
■
■
■
■
■
■
Step-Down and Inverting Regulators  
Notebook and Palmtop Computers  
Portable Instruments  
The LTC1159 automatically switches to power saving  
Burst Mode operation when load current drops below  
approximately 15% of maximum current. Standby current  
is only 300µA while still regulating the output and shut-  
down current is a low 20µA.  
Battery-Operated Digital Devices  
Industrial Power Distribution  
Avionics Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
Telecom Power Supplies  
U
O
TYPICAL APPLICATI  
V
IN  
C
+
IN  
LTC1159-5 Efficiency  
1N4148  
100µF  
V
IN  
100V  
100  
90  
80  
70  
60  
CAP  
P-GATE  
Si9435DY  
FIGURE 1 CIRCUIT  
0.15µF  
V
= 10V  
IN  
V
V
0.1µF  
CC  
+
P-DRIVE  
3.3µF  
CC  
EXTV  
CC  
D1  
L*  
33µH  
R
SENSE  
0.05Ω  
V
= 20V  
MBRS140T3  
IN  
LTC1159-5  
V
OUT  
5V/2A  
+
SHDN1  
SHDN2  
SENSE  
0V = NORMAL  
>2V = SHUTDOWN  
0.01µF  
–
SENSE  
I
TH  
+
C
OUT  
3300pF  
1k  
C
N-GATE  
P-GND  
Si9410DY  
T
220µF  
C
T
S-GND  
300pF  
0.02  
0.2  
LOAD CURRENT (A)  
2
*COILTRONICS CTX33-4-MP  
LTC1159 • F01  
LTC1159 • TA01  
Figure 1. High Efficiency Step-Down Regulator  
1
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中文翻译

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