- 您现在的位置：买卖IC网 > PDF目录20871 > LT3519IMS-1#TRPBF (Linear Technology)LED DRIVER WITH INTEGRATED SCHOT PDF资料下载
参数资料
| 型号： | LT3519IMS-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | LED DRIVER WITH INTEGRATED SCHOT |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 恒定电压： | 是 |
| 拓扑： | PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载 |
| 频率： | 800kHz ~ 1.1MHz |
| 电源电压： | 3 V ~ 30 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TFSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 16-MSOP |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
LT3519/LT3519-1/LT3519-2
PIN FUNCTIONS
GND (Pins 1, 8, 9, 16): Power Ground and Signal Ground.
Tie to GND plane for best thermal performance.
OPENLED (Pin 2): Open LED Status Pin. The OPENLED
pin asserts if the FB input is greater than the FB regulation
threshold minus 60mV (typical). The pin must have an
external pull-up resistor to function. When the PWM input
is low and the converter is idle, the OPENLED condition
is latched to the last valid state when the PWM input was
high. When the PWM input goes high again, the OPENLED
pin will be updated. This pin may be used to report an
open LED fault.
PWM (Pin 3): Pulse Width Modulated Input. A signal
low disables the oscillator and turns off the main switch.
PWM has an internal pull-down resistor. Tie PWM pin to
V REF if not used.
SHDN /UVLO (Pin 4): Shutdown and Undervoltage Lockout
Pin. An accurate 1.22V falling threshold with externally
programmable hysteresis detects when power is okay to
enable switching. Rising hysteresis is generated by the
external resistor divider and an accurate internal 2.2μA
pull-down current. Above the 1.25V (nominal) rising
threshold (but below 6V), SHDN /UVLO input bias current
is sub-μA. Below the falling threshold, a 2.2μA pull-down
current is enabled so the user can de?ne the hysteresis
with external resistor selection. Tie to 0.4V or less to dis-
able device and reduce V IN quiescent current below 1μA.
Pin may be tied to V IN , but do not tie it to a voltage higher
than V IN if V IN is less than 6V.
V IN (Pin 5): Input Supply Pin. This pin must be locally
bypassed with a 1μF ceramic capacitor (or larger) placed
close to it.
SW (Pin 6): Switch Pin. Connect the inductor at this pin.
Minimize the trace at this pin to reduce EMI.
ANODE (Pin 7): Internal Schottky Anode Pin.
CATHODE (Pin 10): Internal Schottky Cathode Pin.
ISP (Pin 11): Current Sense Resistor Positive Pin. This
input is the noninverting input of the internal current sense
ampli?er. Input bias current increases with V ISP –V ISN
increase.
ISN (Pin 12): Current Sense Resistor Negative Pin. This
input is the inverting input of the internal current sense
ampli?er.
FB (Pin 13): Voltage Loop Feedback Pin. It is used to
connect to output resistor divider for constant voltage
regulation or open LED protection. The internal trans-
conductance ampli?er will regulate FB to 1.22V (nominal)
through the DC/DC converter. If the FB input is regulating
the loop, the OPENLED pull-down is asserted. This action
may signal an open LED fault. Do not leave the FB pin
open. If not used, connect to GND.
CTRL (Pin 14): Current Sense Threshold Voltage Adjust-
ment Pin. This pin sets the threshold voltage across the
sense resistor between ISP and ISN. Connect directly to
the V REF pin or a voltage above 1.2V for full-scale thresh-
old of 250mV, or use a voltage between 0.1V and 1.0V to
linearly adjust the threshold. A voltage between 1.0V and
1.2V transitions to the full-scale threshold. Tie CTRL pin
to the V REF pin if not used.
V REF (Pin 15): Reference Output Pin. Typically 2V. This
pin can supply up to 100μA.
3519fa
6
相关PDF资料 |
PDF描述 |
|---|---|
| EBM10DRXS | CONN EDGECARD 20POS DIP .156 SLD |
| P51-500-S-J-MD-4.5V-000-000 | SENSOR 500PSI 3/8-24 UNF .5-4.5V |
| REC3-4812DRWZ/H6/C/SMD | CONV DC/DC 3W 18-72VIN +/-12VOUT |
| P51-300-A-M-M12-4.5OVP-000-000 | SENSOR 300PSI M10-1.0 6G .5-4.5V |
| P51-300-S-J-MD-4.5V-000-000 | SENSOR 300PSI 3/8-24 UNF .5-4.5V |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3519IMS-2#PBF | 功能描述:IC LED DVR W/SCHOTTKY DIO 16MSOP 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 |
| LT3519IMS-2#TRPBF | 功能描述:IC LED DVR W/DIO 2.2MHZ 16MSOP 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 |
| LT3519IMSPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:LED Driver with Integrated Schottky Diode |
| LT3519IMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:LED Driver with Integrated Schottky Diode |
| LT3524 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Regulating Pulse Width Modulator |
发布紧急采购，3分钟左右您将得到回复。