參數(shù)資料
型號： LTC1705
廠商： Linear Technology Corporation
英文描述： Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
中文描述： 雙550kHz的同步開關(guān)，5位VID和150mA LDO穩(wěn)壓器控制器
文件頁數(shù)： 1/28頁
文件大?。?/td> 326K
代理商： LTC1705
LTC1705
1
DESCRIPTIOU
FEATURES
APPLICATIU
I
Complete Power Supply Controller for Intel
Mobile Pentium
Processors
I
Intel Mobile Pentium Core, I/O, Clock Supplies
I
Multiple Logic Supply Generator
TYPICAL APPLICATIOU
The LTC
1705 is a complete power supply controller for
Intel Mobile Pentium processors. It includes two switch-
ing regulator controllers, each designed to drive a pair of
N-channel MOSFETs in a voltage mode feedback, syn-
chronous buck configuration, to provide the core and I/O
supplies. The core controller includes a 5-bit DAC that
conforms to the Intel Mobile VID specification. The IC also
includes a low dropout linear regulator (LDO) that delivers
up to 150mA of output current to provide the CLK supply.
The LTC1705 uses a constant-frequency 550kHz PWM
architecture, minimizing external component size and
cost, as well as optimizing load transient performance. It
provides better than 1.25% DC accuracy at its core output,
and 2% at I/0 and CLK outputs. The high performance
feedback loops allow the circuit to keep total output
regulation within
±
5% under all transient conditions. An
open-drain PGOOD flag indicates that all three outputs are
within
±
10% of their regulated values. A shutdown circuit
disables all three outputs if the RUN/SS pin is pulled to
ground. In this mode, the LTC1705 supply current drops
to below 100
μ
A.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation.
I
Three Regulated Outputs: Core, I/O and CLK in One
Package
I
Integrated Intel Mobile 5-Bit VID DAC
I
No External Current Sense Resistors
I
All N-Channel External MOSFET Architecture
I
550kHz Switching Frequency Minimizes External
Component Size and Cost
I
Integrated 150mA LDO Linear Regulator
I
Excellent DC Accuracy: 1.25% for Core, 2% for I/O
and CLK Supplies
I
PGOOD Flag Monitors All Three Outputs
I
High Efficiency Over Wide Load Current Range
I
Low Shutdown Current: < 100
μ
A
I
Switchers Run Out-of-Phase to Minimize C
IN
I
Small 28-Pin Narrow SSOP Package
Dual 550kHz Synchronous
Switching Regulator Controller with
5-Bit VID and 150mA LDO
Intel Mobile Pentium VRM Supply
SWC
BGC
I
MAXC
SENSEC
FBC
6
4
8
13
11
R
IMAXC
, 27k
C
OUTC
180
μ
F
4V
×
6
L
C
0.68
μ
H
QBCA
QBIO
QBCB
PV
CC
PGOOD
LTC1705
VID4:0
5-BIT VID
V
CC
TGC
BOOSTC
5
3
2
22
19
+
C
OUTIO
100
μ
F
10V
×
2
+
C
IN
330
μ
F
10V
×
3
1
μ
F
V
IN
5V
V
0.9V TO 2V
15A
+
QTCB
QTIO
C
CPC
1
μ
F
D
MBR
0520LT1
QTCA
R
IMAXI0
, 16k
L
IO
3
μ
H
V
1.5V
3A
V
2.5V
150mA
R31
1.8k
R21, 11k
10k
COMPC
RUN/SS
10
R
PGOOD
5k
C
CPIO
μ
F
D
MBR
0520LT1
10
10
μ
F
C31
1800pF
1
μ
F
C
VOUTCLK
μ
F
10V
C
VINCLK
10
10V
1
μ
F
1705 TA01
+
C11
1800pF
C21
330pF
C22
100pF
1
μ
F
C12
2200pF
RB2
10k
1%
9
PGND
GND
7
C
SS
0.1
μ
F
SHUTDOWN
C
IN
: KEMET T510X337K010AS
C
OUTC
: PANASONIC EEFUE0G181R
C
OUTIO
: AVX TPS0107M010R0065
L
C
L
: SUMIDA CDRH6D28-3R0
QTCA, QTCB, QBCA, QBCB: FAIRCHILD FDS6670A
QTIO, QBIO: 1/2 FAIRCHILD NDS8926
V
3.3V
+
12
14–18
SWIO
BGIO
I
MAXIO
25
28
1
COMPIO
21
TGIO
26
27
BOOSTIO
FBIO
20
V
INCLK
24
V
OUTCLK
23
R22, 11k
R12
8.87k
1%
+
相關(guān)PDF資料
PDF描述
LTC1705EGN Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1705EGN 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
LTC1705EGN#PBF 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
LTC1705EGN#TR 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
LTC1705EGN#TRPBF 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
LTC1706CS8-19 功能描述:IC VID VOLTAGE PROGRAMMER 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
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