參數(shù)資料
型號(hào)： LTC3830EGN
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
中文描述： SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁(yè)數(shù)： 18/24頁(yè)
文件大小： 305K
代理商： LTC3830EGN
18
LTC3830/LTC3830-1
sn3830 3830fs
Table 3 shows the suggested compensation component
values for 5V to 3.3V applications based on 470
μ
F Sanyo
POSCAP 4TPB470M output capacitors.
Table 3. Recommended Compensation Network for 5V to 3.3V
Applications Using Multiple Paralleled 470
μ
F Sanyo POSCAP
4TPB470M Output Capacitors
L1 (
μ
H)
C
OUT
(
μ
F)
R
C
(k
)
1.2
1410
1.2
2820
1.2
4700
2.4
1410
2.4
2820
2.4
4700
4.7
1410
4.7
2820
4.7
4700
C
C
(nF)
4.7
2.2
2.2
10
2.2
2.2
10
33
10
C1 (pF)
33
33
33
33
33
10
10
10
10
6.8
15
22
18
43
62
43
91
150
Table 4 shows the suggested compensation component
values for 5V to 3.3V applications based on 1500
μ
F Sanyo
MV-WX output capacitors.
Table 4. Recommended Compensation Network for 5V to 3.3V
Applications Using Multiple Paralleled 1500
μ
F Sanyo MV-WX
Output Capacitors
L1 (
μ
H)
C
OUT
(
μ
F)
R
C
(k
)
1.2
4500
1.2
6000
1.2
9000
2.4
4500
2.4
6000
2.4
9000
4.7
4500
4.7
6000
4.7
9000
C
C
(nF)
1.5
1
0.47
1
1
0.47
3.3
0.47
0.47
C1 (pF)
120
82
56
56
33
27
15
15
15
22
30
39
51
62
82
100
150
200
LAYOUT CONSIDERATIONS
When laying out the printed circuit board, use the follow-
ing checklist to ensure proper operation of the LTC3830.
These items are also illustrated graphically in the layout
diagram of Figure 11. The thicker lines show the high
current paths. Note that at 10A current levels or above,
current density in the PC board itself is a serious concern.
Traces carrying high current should be as wide as pos-
sible. For example, a PCB fabricated with 2oz copper
requires a minimum trace width of 0.15" to carry 10A.
1. In general, layout should begin with the location of the
power devices. Be sure to orient the power circuitry so that
a clean power flow path is achieved. Conductor widths
should be maximized and lengths minimized. After you are
satisfied with the power path, the control circuitry should
be laid out. It is much easier to find routes for the relatively
small traces in the control circuits than it is to find
circuitous routes for high current paths.
2. The GND and PGND pins should be shorted directly at
the LTC3830. This helps to minimize internal ground dis-
turbances in the LTC3830 and prevent differences in ground
potential from disrupting internal circuit operation. This
connection should then tie into the ground plane at a single
point, preferably at a fairly quiet point in the circuit such as
close to the output capacitors. This is not always practical,
however, due to physical constraints. Another reasonably
good point to make this connection is between the output
capacitors and the source connection of the bottom
MOSFET Q2. Do not tie this single point ground in the trace
run between the Q2 source and the input capacitor ground,
as this area of the ground plane will be very noisy.
APPLICATIOU
W
U
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相關(guān)PDF資料
PDF描述
LTC3830 16-Bit Bus Transceiver With 3-State Outputs 48-SSOP -40 to 85
LTC3830-1 16-Bit Bus Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
LTC3830-1ES8 16-Bit Bus Transceiver With 3-State Outputs 56-BGA MICROSTAR JUNIOR -40 to 85
LTC3830ES 16-Bit Bus Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
LTC3830ES8 16-Bit Bus Transceiver With 3-State Outputs 48-TSSOP -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3830EGN#PBF 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:是 類(lèi)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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無(wú) 升壓:是 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR)
LTC3830EGN#TR 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:否 類(lèi)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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC3830EGN#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:是 類(lèi)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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC3830ES 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:否 類(lèi)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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無(wú) 升壓:是 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR)
LTC3830ES#PBF 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:是 類(lèi)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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無(wú) 升壓:是 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR)
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