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LTC1159CS-5#PBF

更新时间： 2024-01-03 20:17:52
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
20页 280K
描述
LTC1159 - High Efficiency Synchronous Step-Down Switching Regulators; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C

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中文翻译

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LTC1159CS-5#PBF 技术参数

是否Rohs认证：符合生命周期：Active
零件包装代码：SOIC针数：16
Reach Compliance Code：compliant风险等级：5.63
Is Samacsys：NBase Number Matches：1

LTC1159CS-5#PBF 数据手册

 浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第2页浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第3页浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第4页浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第5页浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第6页浏览型号LTC1159CS-5#PBF的Datasheet PDF文件第7页 
LTC1159  
LTC1159-3.3/LTC1159-5  
High Efficiency Synchronous  
Step-Down Switching Regulators  
U
FEATURES  
DESCRIPTIO  
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  
■
Ultrahigh 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.  
U
APPLICATIO S  
■
Step-Down and Inverting Regulators  
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.  
■
Notebook and Palmtop Computers  
■
Portable Instruments  
■
Battery-Operated Digital Devices  
■
Industrial Power Distribution  
■
Avionics Systems  
Telecom Power Supplies  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
U
TYPICAL APPLICATIO  
V
IN  
+
C
IN  
1N4148  
100µF  
LTC1159-5 Efficiency  
V
IN  
100V  
CAP  
P-GATE  
Si9435DY  
100  
90  
80  
70  
60  
0.15µF  
FIGURE 1 CIRCUIT  
V
0.1µF  
V
= 10V  
+
CC  
IN  
P-DRIVE  
3.3µF  
V
CC  
EXTV  
CC  
D1  
L*  
33µH  
R
SENSE  
MBRS140T3  
V
= 20V  
0.05Ω  
IN  
LTC1159-5  
1
2
4
V
OUT  
5V/2A  
3
+
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  
*COILTRONICS CTX33-4-MP  
0.02  
0.2  
LOAD CURRENT (A)  
2
LTC1159 • F01  
LTC1159 • TA01  
Figure 1. High Efficiency Step-Down Regulator  
1
1234567...20

中文翻译

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