參數(shù)資料
型號(hào)： LTC1553LCG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Advanced,Self-Calibrating, Precision, Dual Operational Amplifier 8-SOIC -40 to 125
中文描述： SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 0.209 INCH, PLASTIC, SSOP-20
文件頁數(shù)： 1/20頁
文件大?。?/td> 370K
代理商： LTC1553LCG
1
LTC1553L
5-Bit Programmable
Synchronous Switching
Regulator Controller for
Pentium
II Processor
FEATURES
DESCRIPTIO
N
U
The LTC
1553L is a high power, high efficiency switching
regulator controller optimized for a 5V input to 1.8V-3.5V
output applications. It features a digitally programmable
output voltage, a precision internal reference and an internal
feedback system that provides output accuracy of
±
1.5% at
room temperature and typically
±
2% over-temperature, load
current and line voltage shifts. The LTC1553L uses a syn-
chronous 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. Addition-
ally, 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 LTC1553L free-runs at 300kHz and can be synchronized
to a faster external clock if desired. It includes all the inputs
and outputs required to implement a power supply conform-
ing to the Intel Pentium
II Processor VRM 8.2 DC/DC
Converter Specification
I
5-Bit Digitally Programmable 1.8V to 3.5V Fixed
Output Voltage
I
Provides All Features Required by the Intel
Pentium
II Processor VRM 8.2 DC/DC
Converter Specification
I
Flags for Power Good, Over-Temperature 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
Fast Transient Response
I
Available in 2O-Lead SSOP and SW Packages
APPLICATIO
S
U
I
Power Supply for Pentium II, SPARC, ALPHA and
PA-RISC Microprocessors
I
High Power 5V to 1.8V-3.5V Regulators
TYPICAL APPLICATIO
N
U
Figure 1. 5V to 1.8V-3.5V Supply Application
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation.
PWRGD
FAULT
OT
VID0 TO VID4
OUTEN
COMP
SS
SGND
GND
SENSE
10
μ
F
Q1*
20
Q2*
0.1
μ
F
V
CC
I
MAX
PV
CC
PV
CC
12V
V
IN
5V
L
O
2
μ
H
18A
LTC1553L
G1
I
FB
G2
+
0.1
μ
F
1553L F01
C
0.01
μ
F
R
C
8.2k
5.6k
2.7k
5.6k
5.6k
C
SS
0.1
μ
F
0.1
μ
F
10
μ
F
C
**
1200
μ
F
×
4
V
1.8V TO
3.5V
14A
C
330
μ
F
×
7
+
+
C1
150pF
+
5
PENTIUM
II
SYSTEM
*SILICONIX SUD50N03-10
*SANYO 10MV1200GX
COILTRONICS CTX02-13198 OR
PANASONIC 12TS-2R5SP
AVX TPSE337M006R0100
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1553LCG#PBF 功能描述:IC SW REG CNTRLR 5BIT PROG20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):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(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC1553LCG#TR 功能描述:IC REG SW CTRLR 5BIT PROG 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):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(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC1553LCG#TRPBF 功能描述:IC SW REG CNTRLR 5BIT PROG20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):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(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC1553LCSW 功能描述:IC SW REG CNTRLR 5BIT PROG20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):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(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC1553LCSW#PBF 功能描述:IC SW REG CNTRLR 5BIT PROG20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
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