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參數資料
| 型號： | LTC1753 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 9-Bit D-Type Transparent Read-Back Latches With 3-State Outputs 24-PDIP 0 to 70 |
| 中文描述： | 5位可編程同步開關穩壓器控制器的奔騰III處理器 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 269K |
| 代理商： | LTC1753 |
1
LTC1753
5-Bit Programmable
Synchronous Switching
Regulator Controller for
Pentium
III Processor
DESCRIPTIOU
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
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.
Figure 1. 5V to 1.3V-3.5V Supply Application
, 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.
I
5-Bit Digitally Programmable 1.3V to 3.5V Fixed
Output Voltage, VRM 8.4 Compliant
I
Fast Transient Response: 0% to 100% Duty Cycle
I
Phase Lead Compensation for Remote Sensing
I
Overtemperature Protection
I
Flags for Power Good and Overvoltage Fault
I
19A Output Current Capability from a 5V Supply
I
Dual N-Channel MOSFET Synchronous Driver
I
Initial Output Accuracy:
±
1.5%
I
Excellent Output Accuracy:
±
2% Typ Over Line,
Load and Temperature Variations
I
High Efficiency: Over 95% Possible
I
Adjustable Current Limit Without External Sense
Resistors
I
Available in 2O-Lead SSOP and SW Packages
I
Power Supply for Pentium
III, AMD-K6
-2, SPARC,
ALPHA and PA-RISC Microprocessors
I
High Power 5V to 1.3V-3.5V Regulators
PWRGD
FAULT
VID0 TO VID4
OUTEN
COMP
SS
SGND
GND
SENSE
10
μ
F
Q1*
20
Q2*
Q2A*
Q1A*
0.1
μ
F
V
CC
I
MAX
PV
CC
PV
CC
12V
V
IN
5V
L
O
1.3
μ
H
18A
LTC1753
G1
I
FB
V
FB
+
1
μ
F
NC
1753 F01
C
4700pF
R
C
15k
600
5.6k
5.6k
C
SS
0.1
μ
F
+
0.1
μ
F
10
μ
F
C
**
1200
μ
F
×
4
V
1.3V TO
3.5V
14A
C
OUT
2700
μ
F
×
5
+
C1
150pF
+
5
* SILICONIX SUD50N03-10
** SANYO 10MV1200GX
PANASONIC ETQP 6FIR3LFA
SANYO 6MV2700GX
CPU
G2
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC1753CG | 功能描述:IC SW REG CNTRLR PENT III 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:43 系列:- 應用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數:1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-QFN（7x7） 包裝:管件 |
| LTC1753CG#PBF | 功能描述:IC SW REG CNTRLR PENT III 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:2,000 系列:- 應用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數:2 輸出電壓:最低可調至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應商設備封裝:30-TSSOP 包裝:帶卷 (TR) |
| LTC1753CG#TR | 功能描述:IC REG SW 5BIT PROG SYNC 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:43 系列:- 應用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數:1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-QFN（7x7） 包裝:管件 |
| LTC1753CG#TRPBF | 功能描述:IC SW REG CNTRLR PENT III 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:43 系列:- 應用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數:1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-QFN（7x7） 包裝:管件 |
| LTC1753CSW | 功能描述:IC SW REG CNTRLR PENT III 20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:43 系列:- 應用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數:1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-QFN（7x7） 包裝:管件 |
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