参数资料
| 型号： | LT3489EMS8E#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 2.5A 8MSOP |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.6 V ~ 40 V |
| 输入电压： | 2.6 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 2.5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-MSOP-EP |
LT3489
PI FU CTIO S
V C (Pin 1): Error Ampli?er Output Pin. Tie external compen-
sation network to this pin, or use the internal compensation
network by shorting the V C pin to the COMP pin.
FB (Pin 2): Feedback Pin. Reference voltage is 1.235V.
Connect resistive divider tap here. Minimize the trace area at
FB. Set V OUT according to V OUT = 1.235 ? (1 + R1/R2).
SHDN (Pin 3): Shutdown Pin. Tie to 2V or more to enable
device. Ground to shut down. Do not ?oat this pin.
GND (Pin 4): Ground. Tie directly to local ground plane.
SW (Pin 5): Switch Pin. This is the collector of the internal
NPN power switch. Minimize the metal trace area connected
to this pin to minimize EMI.
BLOCK DIAGRA
V IN (Pin 6): Input Supply Pin. Must be locally bypassed.
COMP (Pin 7): Internal Compensation Pin. Provides an
internal compensation network. Tie directly to the V C pin
for internal compensation. Tie to GND if not in use.
SS (Pin 8): Soft-Start Pin. Place a soft-start capacitor here.
Upon start-up, 10 μ A of current charges the capacitor to
1.8V. Use a larger capacitor for slower start-up. Leave
?oating if not in use.
Exposed Pad (Pin 9): Ground. Must be soldered to
PCB.
V C
1
COMP
7
100k
125pF
COMPARATOR
DRIVER
SW
5
A2
R
Q
Q1
S
V IN
6
1.235V
REFERENCE
+
+
V OUT
SS 8
+
–
A1
Σ
–
0.01 ?
R1 (EXTERNAL)
RAMP
GENERATOR
FB
4
9
R2 (EXTERNAL)
2MHz
GND
GND
3489 F01
OSCILLATOR
SHUTDOWN
3
SHDN
2
FB
Figure 1. Block Diagram
3489f
4
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| LT3491EDC#TRMPBF | 功能描述:IC LED DRIVER WHITE BCKLGT 6-DFN 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 |
| LT3491EDC#TRPBF | 功能描述:IC LED DRIVER WHITE BCKLGT 6-DFN 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 |
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