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參數(shù)資料
| 型號(hào)： | LT3465 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
| 中文描述： | 1.2MHz/2.4MHz白光LED升壓轉(zhuǎn)換器內(nèi)置的肖特基采用ThinSOT |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 375K |
| 代理商： | LT3465 |
LT3465/LT3465A
1
3465af
APPLICATIU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
I
Inherently Matched LED Current
I
Drives Up to Six LEDs from a 3.6V Supply
I
No External Schottky Diode Required
I
1.2MHz Switching Frequency (LT3465)
I
2.4MHz Switching Frequency Above AM Broadcast
Band (LT3465A)
I
Automatic Soft-Start (LT3465)
I
Open LED Protection
I
High Efficiency: 81% (LT3465) 79% (LT3465A)
Typical
I
Requires Only 0.22
μ
F Output Capacitor
I
Low Profile (1mm) SOT-23 Packaging
1.2MHz/2.4MHz White LED
Step-Up Converters with
Built-In Schottky in ThinSOT
I
Cellular Phones
I
PDAs, Handheld Computers
I
Digital Cameras
I
MP3 Players
I
GPS Receivers
The LT
3465/LT3465A are step-up DC/DC converters
designed to drive up to six LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED
currents and eliminates the need for ballast resistors.
These devices integrate the Schottky diode required exter-
nally on competing devices. Additional features include
output voltage limiting when LEDs are disconnected, one-
pin shutdown and dimming control. The LT3465 has
internal soft-start.
The LT3465 switches at 1.2MHz, allowing the use of tiny
external components. The faster LT3465A switches at
2.4MHz. Constant frequency switching results in low input
noise and a small output capacitor. Just 0.22
μ
F is required
for 3-, 4- or 5-LED applications.
The LT3465 and LT3465A are available in low profile
(1mm) 6-lead SOT-23 (ThinSOT
TM
) packages.
Figure 1. Li-Ion Powered Driver for Four White LEDs
SW
V
IN
V
OUT
LT3465/
LT3465A
CTRL
GND
3465A F01a
10
C1
1
μ
F
C2
0.22
μ
F
C1, C2: X5R OR X7R DIELECTRIC
L1: MURATA LQH32CN220
L1
22
μ
H
3V TO 5V
SHUTDOWN
AND DIMMING
CONTROL
FB
LED CURRENT (mA)
0
E
78
76
74
80
20
3465A F01b
60
70
68
66
64
62
72
5
10
15
82
V
IN
= 3.6V
4 LEDs
LT3465
LT3465A
Conversion Efficiency
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT3465A | Single Cell 350mA LED Driver |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3465A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| 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(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?開路漏極，PWM 輸出數(shù):4 內(nèi)部驅(qū)動(dòng)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(yīng)商設(shè)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(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?開路漏極，PWM 輸出數(shù):4 內(nèi)部驅(qū)動(dòng)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(yīng)商設(shè)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 |
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