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参数资料
| 型号： | LTC3547EDDB-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ .3A DL 8DFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.25MHz |
| 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： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3547
PI FU CTIO S
V FB1 (Pin 1): Regulator 1 Output Feedback. Receives
the feedback voltage from the external resistor divider
across the regulator 1 output. Nominal voltage for this
pin is 0.6V.
RUN1 (Pin 2): Regulator 1 Enable. Forcing this pin to
V IN enables regulator 1, while forcing it to GND causes
regulator 1 to shut down.
V IN (Pin 3): Main Power Supply. Must be closely decou-
pled to GND.
SW1 (Pin 4): Regulator 1 Switch Node Connection to the
Inductor. This pin swings from V IN to GND.
GND (Pin 5): Ground. Connect to the (–) terminal of C OUT ,
and the (–) terminal of C IN .
FUNCTIONAL DIAGRAM
REGULATOR 1
BURST
CLAMP
SLOPE
COMP
SW2 (Pin 6): Regulator 2 Switch Node Connection to
the Inductor. This pin swings from V IN to GND.
RUN2 (Pin 7): Regulator 2 Enable. Forcing this pin to
V IN enables regulator 2, while forcing it to GND causes
regulator 2 to shut down.
V FB2 (Pin 8): Regulator 2 Output Feedback. Receives
the feedback voltage from the external resistor divider
across the regulator 2 output. Nominal voltage for this
pin is 0.6V.
Exposed Pad (Pin 9): Electrically Connected to GND.
Must be soldered to the PCB for optimum thermal
performance.
3 V IN
V FB1
1
0.6V
–
+
EA
I TH
V SLEEP
–
+
BURST
SLEEP
–
I COMP
+
5 ?
S
Q
RS
LATCH
SOFT-START
SHUTDOWN
R
Q
SWITCHING
LOGIC
AND
BLANKING
CIRCUIT
ANTI
SHOOT-
THRU
I RCMP
4 SW1
5 GND
RUN1
RUN2
2
7
0.6V REF
OSC
SLEEP2
SLEEP1
OSC
V FB2
8
REGULATOR 2 (IDENTICAL TO REGULATOR 1)
3547 FD
6 SW2
3547fa
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3548 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous,400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous, Fixed Output 2.25MHz Step-Down DC/DC Regulator |
| LTC3548-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous, Fixed/Adjustable Output, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548A | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548AEDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
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