參數(shù)資料
型號： LT1683
廠商： Linear Technology Corporation
英文描述： Ultralow Noise Push-Pull DC/DC Controller
中文描述： 超低噪聲推挽式DC / DC控制器
文件頁數(shù)： 1/24頁
文件大?。?/td> 237K
代理商： LT1683
1
LT1683
1683f
TYPICAL APPLICATIOU
APPLICATIU
DESCRIPTIOU
FEATURES
Ultralow Noise
Push-Pull DC/DC Controller
The LT
1683 is a switching regulator controller designed
to lower conducted and radiated electromagnetic interfer-
ence (EMI). Ultralow noise and EMI are achieved by
controlling the voltage and current slew rates of external
N-channel MOSFET switches. Current and voltage slew
rates can be independently set to optimize harmonic
content of the switching waveforms vs efficiency. The
LT1683 can reduce high frequency harmonic power by as
much as 40dB with only minor losses in efficiency.
The LT1683 utilizes a dual output (push-pull) current
mode architecture optimized for low noise topologies. The
IC includes gate drivers and all necessary oscillator,
control and protection circuitry. Unique error amp cir-
cuitry can regulate both positive and negative voltages.
The oscillator may be synchronized to an external clock for
more accurate placement of switching harmonics.
Protection features include gate drive lockout for low V
IN
,
opposite gate lockout, soft-start, output current limit,
short-circuit current limiting, gate drive overvoltage clamp
and input supply undervoltage lockout.
I
Greatly Reduced Conducted and Radiated EMI
I
Low Switching Harmonic Content
I
Independent Control of Output Switch Voltage and
Current Slew Rates
I
Greatly Reduced Need for External Filters
I
Dual N-Channel MOSFET Drivers
I
20kHz to 250kHz Oscillator Frequency
I
Easily Synchronized to External Clock
I
Regulates Positive and Negative Voltages
I
Easier Layout Than with Conventional Switchers
I
Power Supplies for Noise Sensitive Communication
Equipment
I
EMI Compliant Offline Power Supplies
I
Precision Instrumentation Systems
I
Isolated Supplies for Industrial Automation
I
Medical Instruments
I
Data Acquisition Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
A
B
MBRS340
MIDCOM 31244
22
μ
H
150
μ
F
OS-CON
MBRS340
10pF
200V
MBR0530
22
μ
H
OPTIONAL
2
×
100
μ
F
POSCAP
5V/2A
3
10
1683 TA01
11
13
SHDN
CAP A
NFB
LT1683
GND
V
IN
17
14
2
GCL
SS
V5
SYNC
GATE A
5
6
1
C
T
CAP B
18
R
T
GATE B
7
19
8
R
CSL
16
V
C
15
12
R
VSL
CS
4
PGND
20
FB
9
5pF
5pF
Si9422
Si9422
0.1
976
23.2k
10nF
1.5k
3.3k
25k
25k
3.3k
16.9k
1.2nF
39
μ
F
63V
48V
68
μ
F
20V
11V
8.2V
51k
510
0.5W
2N3904
1N4148
10
μ
F
20V
30pF
22nF
0.22
μ
F
7.50k
2.49k
FZT853
10pF
200V
30pF
Ultralow Noise 48V to 5V DC/DC Converter
5V Output Noise
(Bandwidth = 100MHz)
A
200
μ
V/DIV
B
20mV/DIV
200
μ
V
P-P
5
μ
s/DIV
1683 TA01a
相關(guān)PDF資料
PDF描述
LT1683EG Ultralow Noise Push-Pull DC/DC Controller
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LT1719IS6 4.5ns Single/Dual Supply 3V/5V Comparator with Rail-to-Rail Output
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1683EG 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LT1683EG#PBF 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LT1683EG#TR 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LT1683EG#TRPBF 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LT1683IG 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
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