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LTC1753CG#PBF

更新时间： 2024-02-21 13:35:28
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
24页 244K
描述
LTC1753 - 5-Bit Programmable Synchronous Switching Regulator Controller for Pentium® II Processor; Package: SSOP; Pins: 20; Temperature Range: 0°C to 70°C

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中文翻译

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LTC1753CG#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP20,.3
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.49模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：6 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e3长度：7.2 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP20,.3
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：2 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：350 kHz技术：CMOS
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：5.3 mmBase Number Matches：1

LTC1753CG#PBF 数据手册

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LTC1753  
5-Bit Programmable  
Synchronous Switching  
Regulator Controller for  
Pentium® III Processor  
U
FEATURES  
DESCRIPTIO  
The LTC®1753 is a high power, high efficiency switching  
regulator controller optimized for 5V input to a digitally  
programmable 1.3V-3.5V output. The internal 5-bit DAC  
programs the output voltage from 1.3V to 2.05V in 50mV  
incrementsandfrom2.1Vto3.5Vin100mVincrements. The  
precision internal reference and an internal feedback system  
provide an output accuracy of ±1.5% at room temperature  
and typically ±2% over temperature, load current and line  
voltage shifts. The LTC1753 uses a synchronous switching  
architecture with two external N-channel output devices,  
providing high efficiency and eliminating the need for a high  
power,highcostP-channeldevice.Additionally,itsensesthe  
output current across the on-resistance of the upper N-  
channel FET, providing an adjustable current limit without an  
external low value sense resistor.  
■
5-Bit Digitally Programmable 1.3V to 3.5V Fixed  
Output Voltage, VRM 8.4 Compliant  
■
Fast Transient Response: 0% to 100% Duty Cycle  
■
Phase Lead Compensation for Remote Sensing  
■
Overtemperature Protection  
■
Flags for Power Good and Overvoltage Fault  
■
19A Output Current Capability from a 5V Supply  
■
Dual N-Channel MOSFET Synchronous Driver  
■
Initial Output Accuracy: ±1.5%  
■
Excellent Output Accuracy: ±2% Typ Over Line,  
Load and Temperature Variations  
High Efficiency: Over 95% Possible  
■
■
Adjustable Current Limit Without External Sense  
Resistors  
■
Available in 2O-Lead SSOP and SW Packages  
The LTC1753 free-runs at 300kHz and can be synchronized  
to a faster external clock if desired. It provides a phase lead  
compensation scheme and under harsh loading conditions,  
the PWM duty cycle can be momentarily forced to 0% or  
100% to reduce the output voltage recovery time.  
U
APPLICATIO S  
Power Supply for Pentium® III, AMD-K6®-2, SPARC,  
ALPHA and PA-RISC Microprocessors  
High Power 5V to 1.3V-3.5V Regulators  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Pentium is a registered trademark of Intel Corporation.  
AMD-K6 is a registered trademark of Advanced Micro Devices, Inc.  
U
TYPICAL APPLICATIO  
PV  
CC  
12V  
V
IN  
5V  
+
+
+
C
**  
IN  
0.1µF  
10µF  
0.1µF  
10µF  
1200µF  
× 4  
600Ω  
5.6k  
5.6k  
Q1A*  
V
†
I
CC  
PV  
CC  
MAX  
L
O
Q1*  
Q2*  
PWRGD  
FAULT  
G1  
1.3µH  
18A  
V
OUT  
20Ω  
1.3V TO  
3.5V  
14A  
I
FB  
CPU  
5
VID0 TO VID4  
OUTEN  
LTC1753  
††  
C
+
OUT  
Q2A*  
2700µF  
× 5  
G2  
V
FB  
NC  
COMP  
SS  
SGND  
GND  
SENSE  
R
C
15k  
C1  
150pF  
C
SS  
0.1µF  
C
C
* SILICONIX SUD50N03-10  
** SANYO 10MV1200GX  
† PANASONIC ETQP 6FIR3LFA  
†† SANYO 6MV2700GX  
1µF  
4700pF  
1753 F01  
Figure 1. 5V to 1.3V-3.5V Supply Application  
1753fa  
1
1234567...24

中文翻译

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