參數(shù)資料
型號(hào)： LTC1703CG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Synchronous 8-Bit Up/Down Binary Counters 24-PDIP 0 to 70
中文描述： 5 A DUAL SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁(yè)數(shù)： 7/36頁(yè)
文件大?。?/td> 343K
代理商： LTC1703CG
7
LTC1703
OVERVIEW
The LTC1703 is a dual, step-down (buck), voltage mode
feedback switching regulator controller. It is designed to
be used in a synchronous switching architecture with two
external N-channel MOSFETs per channel. It is intended to
operate from a low voltage input supply (7V maximum)
and provide a high power, high efficiency, precisely regu-
lated output voltage. Several features make it particularly
suited for microprocessor supply regulation. Output regu-
lation is extremely tight, with DC line and load regulation
and initial accuracy better than 1.5%, and total regulation
including transient response inside of 3.5% with a prop-
BURST
LOGIC
SOFT
START
90% DUTY CYCLE
RUN/SS1,2
COMP1,2
10
μ
A
4
μ
A
500mV
800mV
760mV
840mV
I
MAX1,2
DRIVE
LOGIC
OSC
550kHz
+
–
I
LIM
FB
MIN
MAX
920mV
FLT
0V
DIS
FCB
FB1,2
1703 BD
BOOST1,2
TG1,2
FROM
OTHER
CONTROLLER
SHUTDOWN TO
THIS CONTROLLER
SHUTDOWN TO
ENTIRE CHIP
FAULT
PV
CC
25
μ
s
DELAY
FROM
OTHER
CONTROLLER
V
CC
SW1,2
BG1,2
PGND
SGND
10
μ
A
40k
VID0
V
CC
40k
VID1
V
CC
40k
VID2
V
CC
40k
VID3
V
CC
40k
VID4
V
CC
R11
10k
R
B1
SENSE
TO FB1
SWITCH
CONTROL
LOGIC
erly designed circuit. The 550kHz switching frequency
allows the use of physically small, low value external
components without compromising performance. An
onboard DAC sets the output voltage at channel 1, consis-
tent with the Intel mobile VID specification (Table 1).
The LTC1703’s internal feedback amplifier is a 25MHz
gain-bandwidth op amp, allowing the use of complex
multipole/zero compensation networks. This allows the
feedback loop to maintain acceptable phase margin at
higher frequencies than traditional switching regulator
controllers allow, improving stability and maximizing tran-
sient response. The 800mV internal reference allows
BLOCK DIAGRA
APPLICATIOU
W
U
U
相關(guān)PDF資料
PDF描述
LTC1704 Synchronous 8-Bit Up/Down Binary Counters 24-SOIC 0 to 70
LTC1704B Synchronous 8-Bit Up/Down Binary Counters 24-SOIC 0 to 70
LTC1705 Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
LTC1705EGN Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
LTC1710 Synchronous 8-Bit Up/Down Binary Counters 24-PDIP 0 to 70
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1703CG#PBF 功能描述:IC REG SW DUAL SYNC VID 28SSOP 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:2,000 系列:- 應(yīng)用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)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(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR)
LTC1703CG#TR 制造商:Linear Technology 功能描述:LDO Cntrlr REG CTRLR 0.9V to 2V 28-Pin SSOP T/R
LTC1703CG#TRPBF 功能描述:IC REG SW DUAL SYNC VID 28SSOP 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
LTC1703IG 功能描述:IC REG SW DL SYNC W/VID 28-SSOP 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
LTC1703IG#PBF 功能描述:IC REG SW DUAL SYNC VID 28SSOP 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
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