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| 型号： | LTC1753CSW |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC SW REG CNTRLR PENT III 20SOIC |
| 标准包装： | 38 |
| 应用： | 控制器，Intel Pentium? III |
| 输入电压： | 5V |
| 输出数： | 1 |
| 输出电压： | 1.3 V ~ 3.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 管件 |
LTC1753
5-Bit Programmable
Synchronous Switching
Regulator Controller for
Pentium ? III Processor
FEATURES
DESCRIPTIO
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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 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
increments and from 2.1V to 3.5V in 100mV increments. 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, high cost P-channel device. Additionally, it senses the
output current across the on-resistance of the upper N-
channel FET, providing an adjustable current limit without an
external low value sense resistor.
The LTC1753 free-runs at 300kHz and can be synchronized
Power Supply for Pentium ? III, AMD-K6 ? -2, SPARC,
APPLICATIO S
s
ALPHA and PA-RISC Microprocessors
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.
s
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.
TYPICAL APPLICATIO
PV CC
12V
V IN
5V
5.6k
5.6k
0.1 μ F
+
10 μ F
600 ?
0.1 μ F
+
10 μ F
+ C IN **
1200 μ F
× 4
Q1A*
CPU
5
PWRGD
FAULT
VID0 TO VID4
OUTEN
V CC I MAX
LTC1753
PV CC
G1
I FB
G2
20 ?
Q2A*
Q1*
Q2*
L O ?
1.3 μ H
18A
C OUT ??
2700 μ F
× 5
+
V OUT
1.3V TO
3.5V
14A
COMP
SS
SGND
GND
SENSE
V FB
NC
R C
C1
150pF
15k
C C
4700pF
C SS
0.1 μ F
1 μ F
* SILICONIX SUD50N03-10
** SANYO 10MV1200GX
? PANASONIC ETQP 6FIR3LFA
?? SANYO 6MV2700GX
1753 F01
Figure 1. 5V to 1.3V-3.5V Supply Application
1753fa
1
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相关代理商/技术参数 |
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| LTC1753CSW#PBF | 功能描述:IC SW REG CNTRLR PENT III 20SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1753CSW#TR | 功能描述:IC REG SW 5BIT PROG SYNC 20SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1753CSW#TRPBF | 功能描述:IC SW REG CNTRLR PENT III 20SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1754ES6-3.3 | 制造商:Linear Technology 功能描述:Charge Pump STPUP 3.3V 40mA 6-Pin TSOT-23 |
| LTC1754ES6-3.3#PBF | 制造商:Linear Technology 功能描述:Charge Pump STPUP 3.3V 40mA 6-Pin TSOT-23 |
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