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参数资料
| 型号： | LT3477IFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HP CONS CURR 20TSSOP |
| 标准包装： | 74 |
| 恒定电流： | 是 |
| 恒定电压： | 是 |
| 拓扑： | 回扫，PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 类型 - 次要： | 白色 LED |
| 频率： | 200kHz ~ 3.5MHz |
| 电源电压： | 2.5 V ~ 25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 20-TSSOP-EP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
LT3477
ABSOLUTE MAXIMUM RATINGS
(Note 1)
SW Pin Voltage ........................................................ 42V
V IN , SHDN Pin Voltage ............................................. 25V
FBP, FBN Pin Voltage ................................................. 6V
V REF Pin Voltage......................................................... 6V
R T , V C , SS Pin Voltage ............................................... 6V
I ADJ1 , I ADJ2 Pin Voltage ............................................ 25V
I SP1 , I SP2 , I SN1 , I SN2 Pin Voltage ...............................42V
PIN CONFIGURATION
TOP VIEW
Junction Temperature .......................................... 125°C
Operating Temperature Range (Note 2)
LT3477E ...............................................– 40°C to 85°C
LT3477I .............................................. –40°C to 125°C
Storage Temperature Range................... – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP .............................................................. 300°C
TOP VIEW
V IN
1
20 NC
R T
SHDN
2
3
19 NC
18 NC
20 19 18 17 16
SS
V C
FBN
FBP
4
5
6
7
21
17 SW
16 SW
15 GND
14 I SN1
NC 1
NC 2
V IN 3
R T 4
SHDN 5
21
15 I SP1
14 I SN2
13 I SP2
12 I ADJ1
11 I ADJ2
V REF
8
13 I SP1
I ADJ2
9
12 I SN2
6
7
8
9 10
I ADJ1 10
FE PACKAGE
11 I SP2
UF PACKAGE
20-LEAD PLASTIC TSSOP
T JMAX = 125°C, θ JA = 40°C/W
EXPOSED PAD (PIN 21) IS PGND (MUST BE SOLDERED TO PCB)
ORDER INFORMATION
20-LEAD (4mm × 4mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 37°C/W
EXPOSED PAD (PIN 21) IS PGND (MUST BE SOLDERED TO PCB)
LEAD FREE FINISH
LT3477EFE#PBF
LT3477IFE#PBF
LT3477EUF#PBF
LT3477IUF#PBF
TAPE AND REEL
LT3477EFE#TRPBF
LT3477IFE#TRPBF
LT3477EUF#TRPBF
LT3477IUF#TRPBF
PART MARKING
3477
3477
PACKAGE DESCRIPTION
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
20-Lead (4mm × 4mm) Plastic QFN
20-Lead (4mm × 4mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
The ● indicates speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 2.5V, V SHDN = 2.5V.
PARAMETER
Minimum Input Voltage
Quiescent Current
CONDITIONS
V SHDN = 0V
V SHDN = 2.5V, V C = 0.3V (Not Switching)
l
MIN
TYP
2.3
0.1
5.0
MAX
2.5
1.0
7.5
UNITS
V
μA
mA
Reference Voltage
Reference Voltage Line Regulation
E Grade
I Grade
2.5V < V IN < 25V, V C = 0.3V
l
l
1.216
1.210
1.235
1.235
0.01
1.250
1.260
0.03
V
V
%/V
3477fc
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3477IUF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A, DC/DC Converter with Dual Rail-to-Rail Current Sense |
| LT3477IUF#PBF | 功能描述:IC LED DRVR HP CONST CURR 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C |
| LT3477IUF#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BOOST 3.5MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, 3.5MHZ, QFN-20 |
| LT3477IUF#TRPBF | 功能描述:IC LED DRVR HP CONST CURR 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3478 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4.5A Monolithic LED Drivers with True Color PWM Dimming |
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