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参数资料
| 型号： | LTC3405ES6#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ .3A SOT23-6 |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 6 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 300mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-6 |
LTC3405
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
V OUT
100mV/DIV
AC
COUPLED
I L
200mA/DIV
I LOAD
200mA/DIV
Load Step
V OUT
100mV/DIV
AC
COUPLED
I L
200mA/DIV
I LOAD
200mA/DIV
Load Step
V OUT
100mV/DIV
AC
COUPLED
I L
200mA/DIV
I LOAD
200mA/DIV
Load Step
V IN = 3.6V 40 μ s/DIV
V OUT = 1.8V
I LOAD = 20mA TO 250mA
PULSE SKIPPING MODE
3405 G20
V IN = 3.6V 40 μ s/DIV
V OUT = 1.8V
I LOAD = 20mA TO 250mA
Burst Mode OPERATION
3405 G21
V IN = 3.6V 40 μ s/DIV
V OUT = 1.8V
I LOAD = 0mA TO 250mA
Burst Mode OPERATION
3405 G22
PI FU CTIO S
RUN (Pin 1): Run Control Input. Forcing this pin above
1.5V enables the part. Forcing this pin below 0.3V shuts
down the device. In shutdown, all functions are disabled
drawing <1 μ A supply current. Do not leave RUN floating.
GND (Pin 2): Ground Pin.
SW (Pin 3): Switch Node Connection to Inductor. This pin
connects to the drains of the internal main and synchro-
V IN (Pin 4): Main Supply Pin. Must be closely decoupled
to GND, Pin 2, with a 2.2 μ F or greater ceramic capacitor.
V FB (Pin 5): Feedback Pin. Receives the feedback voltage
from an external resistive divider across the output.
MODE (Pin 6): Mode Select Input. To select pulse skip-
ping mode, tie to V IN . Grounding this pin selects Burst
Mode operation. Do not leave this pin floating.
nous power MOSFET switches.
3405fa
5
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