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參數(shù)資料
| 型號： | LT3495BEDDB#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.78 A SWITCHING REGULATOR, PDSO10 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 299K |
| 代理商： | LT3495BEDDB#TRPBF |
LT3495/LT3495B/
LT3495-1/LT3495B-1
9
3495b1b1fa
APPLICATIONS INFORMATION
Inductor Selection
Several inductors that work well with the LT3495/LT3495B
are listed in Table 2 and those for the LT3495-1/LT3495B-1
are listed in Table 3. These tables are not complete, and
there are many other manufacturers and devices that can
be used. Consult each manufacturer for more detailed
information and for their entire selection of related parts,
as many different sizes and shapes are available.
Inductors with a value of 3.3μH or higher are recommended
for most LT3495 series designs. Inductors with low core
losses and small DCR (copper wire resistance) are good
choices for LT3495 series applications. For full output
power, the inductor should have a saturation current rating
higher than the peak inductor current. The peak inductor
current can be calculated as:
I
PK = ILIMIT +
V
IN 200 10
–9
L
amps
where ILIMIT is 0.65A and 0.35A for LT3495/LT3495B and
LT3495-1/LT3495B-1 respectively. L is the inductance
value in Henrys and VIN is the input voltage to the boost
circuit.
Table 2. Recommended Inductors for LT3495/LT3495B
PART
L
(μH)
DCR
(mΩ)
SIZE (mm)
VENDOR
LPS4018-103ML
MSS5131-103MLC
LPS3015-472MLC
LPS3015-682MLC
10
4.7
6.8
200
83
200
300
4.4
× 4.4 × 1.7
5.1
× 5.1 × 3.1
3.0
× 3.0 × 1.5
3.0
× 3.0 × 1.5
Coilcraft
www.coilcraft.com
LQH43CN4R7M03
4.7
150
4.5
× 3.2 × 2.8 Murata
www.murata.com
CR32-6R8
6.8
202
4.1
× 3.7 × 3.0 Sumida
www.sumida.com
744031004
4.7
105
3.8
× 3.8 × 1.7 Wurth Elektronik
www.weonline.com
Capacitor Selection
The small size and low ESR of ceramic capacitors makes
them suitable for most LT3495 series applications. X5R
and X7R types are recommended because they retain
their capacitance over wider voltage and temperature
ranges than other types such as Y5V or Z5U. A 4.7μF
input capacitor and a 1μF to 10μF output capacitor are
sufcient for most applications. Always use a capacitor
with a sufcient voltage rating. Many capacitors rated at
1μF to 10μF, particularly 0603 case sizes, have greatly
reduced capacitance when bias voltages are applied. Be
sure to check actual capacitance at the desired output
voltage. Generally a 0805 or 1206 size capacitor will be
adequate. A 2.2μF capacitor placed on the CAP node is
recommended to lter the inductor current while a 1μF to
10μF capacitor placed on the VOUT node will give excellent
transient response and stability. Table 4 shows a list of
several capacitor manufacturers. Consult the manufac-
turers for more detailed information and for their entire
selection of related parts.
Table 3. Recommended Inductors for LT3495-1/LT3495B-1
PART
L
(μH)
DCR
(mΩ)
SIZE (mm)
VENDOR
LPO4815-472MLC
LPO4815-682MLC
LPO4815-103MLC
LPS3008-472MLC
LPS3008-682MLC
LPS3008-103MLC
4.7
6.8
10
4.7
6.8
10
150
180
230
350
500
650
4.8
× 4.8 × 1.5
4.8
× 4.8 × 1.5
4.8
× 4.8 × 1.5
3.0
× 3.0 × 0.8
3.0
× 3.0 × 0.8
3.0
× 3.0 × 0.8
Coilcraft
www.coilcraft.com
LQH32CN4R7M53
LQH32CN100K33
4.7
10
150
300
3.2
× 2.5 × 1.6
3.2
× 2.5 × 2.0
Murata
www.murata.com
CDH28D09/S-6R2
6.2
369
3.3
× 3.0 × 1.0 Sumida
www.sumida.com
744030004
4.7
290
3.5
× 3.3 × 1.0 Wurth Elektronik
www.weonline.com
Table 4. Recommended Ceramic Capacitor Manufacturers
MANUFACTURER
PHONE
WEBSITE
Taiyo Yuden
(408) 573-4150
www.t-yuden.com
AVX
(843) 448-9411
www.avxcorp.com
Murata
(814) 237-1431
www.murata.com
Kemet
(408) 986-0424
www.kemet.com
TDK
(847) 803-6100
www.tdk.com
Diode Selection
Schottky diodes, with their low forward voltage drops and
fast switching speeds, are recommended for use with the
LT3495 series. The Diodes Inc. B0540WS-7 is a very good
choice. This diode is rated to handle an average forward
current of 0.5A with 40V reverse breakdown.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3495EDDB#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BOOST DFN-10 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, DFN-10 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, DFN-10, Primary Input Voltage:16V, No. of Outputs:1, No. of Pins:10, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited, Package / Case:10-DFN , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, Cut Tape Micropower 650mA (|sw) Low Noise Boost Converter w |
| LT3495EDDB#TRMPBF | 功能描述:IC REG BOOST ADJ 0.65A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):1MHz 電流 - 輸出:1.5A 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| LT3495EDDB#TRPBF | 功能描述:IC REG BOOST ADJ 0.65A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LT3495EDDB-1#TRMPBF | 功能描述:IC REG BOOST ADJ 0.35A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
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