- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377723 > LT3465A (Linear Technology Corporation) Single Cell 350mA LED Driver PDF資料下載
參數(shù)資料
| 型號： | LT3465A |
| 廠商： | Linear Technology Corporation |
| 元件分類： | LED驅動器 |
| 英文描述： | Single Cell 350mA LED Driver |
| 中文描述： | 單細胞350mA的LED驅動器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 375K |
| 代理商： | LT3465A |
LT3465/LT3465A
6
3465af
LED CURRENT (mA)
0
70
75
15
3465A F04b
65
60
5
10
20
55
50
80
E
V
= 3.6V
4 LEDs
MURATA LQH32CN220
MURATA LQH32CN100
MURATA LQH2MCN220
TOKO D312-220
TOKO D312-100
TAIYO YUDEN LB2012B220
APPLICATIOU
W
U
U
reaches zero during the discharge phase. After the induc-
tor current reaches zero, the SW pin exhibits ringing due
to the LC tank circuit formed by the inductor in combina-
tion with switch and diode capacitance. This ringing is
not harmful; far less spectral energy is contained in the
ringing than in the switch transitions. The ringing can be
damped by application of a 300
resistor across the
inductor, although this will degrade efficiency. Because
of the higher switching frequency, the LT3465A can drive
a 3-LED string at 0.2mA LED current without pulse
skipping. The photo in Figure 3b detials circuit operation
driving three white LEDs at a 0.2mA load. Peak inductor
current is less than 30mA.
Inductor Selection
A 22
μ
H inductor is recommended for most LT3465 appli-
cations. Although small size and high efficiency are major
concerns, the inductor should have low core losses at
1.2MHz and low DCR (copper wire resistance). Some
inductors in this category with small size are listed in
Table1. The efficiency comparison of different inductors
is shown in Figure 4a. A 22
μ
H or 10
μ
H inductor is
recommended for most LT3465A applications. The induc-
tor should have low core losses at 2.4MHz and low DCR.
The efficiency comparison of different inductors is shown
in figure 4b.
Table 1. Recommended Inductors
PART
NUMBER
DCR (
)
LQH32CN220
LQH2MCN220
CURRENT RATING
(mA)
250
185
MANUFACTURER
Murata
814-237-1431
www.murata.com
Panasonic
714-373-7334
www.panasonic.com
Sumida
847-956-0666
www.sumida.com
Taiyo Yuden
408-573-4150
www.t-yuden.com
Taiyo Yuden
408-573-4150
www.t-yuden.com
0.71
2.4
ELJPC220KF
4.0
160
CDRH3D16-220
0.53
350
LB2012B220M
1.7
75
LEM2520-220
5.5
125
Capacitor Selection
The small size of ceramic capacitors makes them ideal for
LT3465 and LT3465A 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 1
μ
F input capacitor and a 0.22
μ
F
output capacitor are sufficient for most LT3465 and
LT3465A applications.
Table 2. Recommended Ceramic Capacitor Manufacturers
MANUFACTURER
PHONE
Taiyo Yuden
408-573-4150
Murata
814-237-1431
Kemet
408-986-0424
URL
www.t-yuden.com
www.murata.com
www.kemet.com
LED CURRENT (mA)
0
70
75
85
15
3465A F04b
65
60
5
10
20
55
50
80
E
MURATA LQH32CN220
TAIYO YUDEN LB2012B220M
TAIYO YUDEN CB2012B220
V
= 3.6V
4 LEDs
Figure 4a. Efficiency Comparison of Different Inductors (LT3465)
Figure 4b. Efficiency Comparison of Different Inductors (LT3465A)
相關PDF資料 |
PDF描述 |
|---|---|
| LT3465ES6 | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
| LT3465AES6 | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
| LT3470 | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| LT3470ETS8 | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| LT3470ITS8 | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT3465AES6 | 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V/12V/15V 6-Pin TSOT-23 |
| LT3465AES6#PBF | 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V/12V/15V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:LED DRIVER BOOST PWM/ANALOGUE 1.2MHZ 制造商:Linear Technology 功能描述:LED DRIVER, BOOST, PWM/ANALOGUE, 1.2MHZ, 制造商:Linear Technology 功能描述:SP-SWREG/LED Driver, CUT TAPE White LED Step-up Converter with Intl Schottky 制造商:Linear Technology 功能描述:LED DRIVER, BOOST, PWM/ANALOGUE, 1.2MHZ, TSOT-23-6, Topology:Boost (Step Up), No. of Outputs:1, Output Voltage:30V, Driver Case Style:TSOT-23, Input Voltage Min:2.7V, Input Voltage Max:16V, Dimming Control Type:PWM / Analogue , RoHS Compliant: Yes |
| LT3465AES6#TR | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:否 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓撲:開路漏極，PWM 輸出數(shù):4 內(nèi)部驅動器:是 類型 - 主要:LED 閃爍器 類型 - 次要:- 頻率:400kHz 電源電壓:2.3 V ~ 5.5 V 輸出電壓:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤 供應商設備封裝:8-HVSON 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C 其它名稱:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3465AES6#TRM | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:否 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓撲:開路漏極，PWM 輸出數(shù):4 內(nèi)部驅動器:是 類型 - 主要:LED 閃爍器 類型 - 次要:- 頻率:400kHz 電源電壓:2.3 V ~ 5.5 V 輸出電壓:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤 供應商設備封裝:8-HVSON 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C 其它名稱:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3465AES6#TRMPBF | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓撲:線性（LDO），PWM，升壓（升壓） 輸出數(shù):8 內(nèi)部驅動器:是 類型 - 主要:背光 類型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C |
發(fā)布緊急采購，3分鐘左右您將得到回復。