- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376110 > LBC2518 (Monolithic Power Systems, Inc.) 1.7MHz, 600mA Synchronous Step-Down Converter PDF資料下載
參數(shù)資料
| 型號(hào)： | LBC2518 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1.7MHz, 600mA Synchronous Step-Down Converter |
| 中文描述： | 為1.7MHz，600mA的同步降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大小： | 454K |
| 代理商： | LBC2518 |
MP2104 – 1.7MHz 600mA SYNCHRONOUS STEP-DOWN CONVERTER
MP2104 Rev. 1.3
10/4/2005
www.MonolithicPower.com
8
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2005 MPS. All Rights Reserved.
TM
APPLICATION INFORMATION
Output Voltage Setting (MP2104DJ)
The external resistor divider sets the output
voltage (see Figure 3). The feedback resistor R1
also sets the feedback loop bandwidth with the
internal compensation capacitor (see Figure 1).
Choose R1 around 300k
for optimal transient
response. R2 is then given by:
1
V
6
V
1
R
2
R
OUT
=
Table 1—Resistor Selection vs. Output
Voltage Setting
V
OUT
R1
R2
1.2V
300k
(1%)
300k
(1%)
300k
(1%)
300k
(1%)
300k
(1%)
200k
(1%)
150k
(1%)
95.3k
(1%)
1.5V
1.8V
2.5V
Inductor Selection
A 1μH to 10μH inductor with DC current rating
at least 25% higher than the maximum load
current is recommended for most applications.
For best efficiency, the inductor DC resistance
shall
be
<200m
.
recommended inductors and manufacturers.
For most designs, the inductance value can be
derived from the following equation:
(
OUT
V
×
See
Table
2
for
)
OSC
L
IN
OUT
V
IN
I
f
V
V
L
×
×
=
Where
I
L
is the inductor ripple current. Choose
inductor ripple current approximately 30% of the
maximum load current, 600mA.
The maximum inductor peak current is:
2
I
I
I
L
LOAD
)
MAX
(
L
+
=
Under light load conditions below 100mA, larger
inductance is recommended for improved
efficiency. Table 3 lists inductors recommended
for this purpose.
Table 2—Suggested Surface Mount Inductors
Manufacturer
Coilcraft
Toko
Sumida
Taiyo Yuden
Part Number
LP1704-222M
D312C
CDRH3D16
LBC2518
Inductance (μH)
2.2
2.2
2.2
2.2
Max DCR (
)
0.07
0.14
0.072
0.13
Saturation
Current (A)
1.7
1.0
1.2
0.6
Dimensions
LxWxH (mm
3
)
6.5x5.3x2
3.6x3.6x1
4x4x1.8
2.5x1.8x1.8
Table 3—Inductors for Improved Efficiency at 25mA, 50mA, under 100mA Load.
Manufacturer
Coilcraft
Murata
Sumida
Sumida
Sumida
Part Number
DO1605T-103MX
LQH4C100K04
CMD4D06-100
CR32-100
CR54-100
Inductance (μH)
10
10
10
10
10
Max DCR (
)
0.3
0.2
0.3
0.2
0.1
Saturation
Current (A)
1.0
1.2
0.7
1.0
1.2
I
RMS
(A)
0.9
0.8
0.5
0.7
1.4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC70A | 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR |
| LC10 | 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR |
| LC10A | 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR |
| LC11 | 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR |
| LC9.0 | 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LBC2518T100 | 制造商:TAIYO-YUDEN 制造商全稱:Taiyo Yuden (U.S.A.), Inc 功能描述:WOUND CHIP INDUCTORS |
| LBC2518T100K | 功能描述:固定電感器 INDCTR HI CUR WND 1007 10uH 10% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| LBC2518T100KV | 功能描述:10μH Unshielded Wirewound Inductor 375mA 360 mOhm Nonstandard 制造商:taiyo yuden 系列:LB 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:繞線 材料 - 磁芯:- 電感:10μH 容差:±10% 額定電流:375mA 電流 - 飽和值:- 屏蔽:無屏蔽 DC 電阻（DCR）:360 毫歐 不同頻率時(shí)的 Q 值:- 頻率 - 自諧振:30MHz 等級(jí):AEC-Q200 工作溫度:-40°C ~ 105°C 頻率 - 測(cè)試:2.52MHz 安裝類型:表面貼裝 封裝/外殼:非標(biāo)準(zhǔn) 大小/尺寸:0.098" 長(zhǎng) x 0.071" 寬（2.50mm x 1.80mm） 高度 - 安裝（最大值）:0.079"（2.00mm） 標(biāo)準(zhǔn)包裝:1 |
| LBC2518T100M | 功能描述:固定電感器 INDCTR HI CUR WND 1007 10uH 20% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| LBC2518-T100MK | 制造商:KEMET 制造商全稱:Kemet Corporation 功能描述:Surface Mount Ferrite Products |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。