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LT3470AIDDB-TRPBF

更新时间： 2024-01-25 07:42:14

品牌	Logo	应用领域
凌特 - Linear		调节器二极管
页数	文件大小	规格书
20页	208K
描述
Micropower Buck Regulator with Integrated Boost and Catch Diodes

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中文翻译

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技术参数
数据手册

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LT3470AIDDB-TRPBF 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	,
针数：	8	Reach Compliance Code：	unknown
Base Number Matches：	1

LT3470AIDDB-TRPBF 数据手册

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LT3470A

PIN FUNCTIONS

SHDN (Pin 8): The SHDN pin is used to put the LT3470A in

shutdown mode. Tie to ground to shut down the LT3470A.

Apply 2V or more for normal operation. If the shutdown

BOOST (Pin 3): The BOOST pin is used to provide a drive

voltage, which is higher than the input voltage, to the

internal bipolar NPN power switch.

feature is not used, tie this pin to the V pin.

BIAS (Pin 2): The BIAS pin connects to the internal boost

NC (Pin 7): This pin can be left ﬂoating, connected to V ,

or tied to GND.

Schottky diode and to the internal regulator. Tie to V

OUT

>3Vthe

whenV >2.5VortoV otherwise.WhenV

OUT

BIAS

BIAS pin will supply current to the internal regulator.

V (Pin 6): The V pin supplies current to the LT3470A’s

internal regulator and to the internal power switch. This

FB (Pin 1): The LT3470A regulates its feedback pin to

1.25V. Connect the feedback resistor divider tap to this

pin. Set the output voltage according to V_OUT= 1.25V (1

+ R1/R2) or R1 = R2 (V_OUT/1.25 – 1).

pin must be locally bypassed.

GND (Pin 5): Tie the GND pin to a local ground plane

below the LT3470A and the circuit components. Return

the feedback divider to this pin.

Exposed Pad (Pin 9): Ground. Must be soldered to PCB.

SW (Pin 4): The SW pin is the output of the internal power

switch. Connect this pin to the inductor, catch diode and

boost capacitor.

3470afa

1...4 5 678 9 10...20

中文翻译

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