Datasheet > AS1334-BTDT-15

AS1334-BTDT-15

更新时间： 2024-02-06 09:20:13

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器
页数	文件大小	规格书
17页	1733K
描述
650mA, Ultra low Ripple Step Down DC/DC Converter

阅读下载

获取价格

如果您发现信息不准确，欢迎纠错

AS1334-BTDT-15 技术参数

AS1334

Datasheet - Application Information

Layout Considerations

The AS1334 converts higher input voltage to lower output voltage with high efficiency. This is achieved with an

inductorbased switching topology. During the first half of the switching cycle, the internal PMOS switch turns on, the

input voltage is applied to the inductor, and the current flows from PVDD line to the output capacitor (C2) through the

inductor. During the second half cycle, the PMOS turns off and the internal NMOS turns on. The inductor current

continues to flow via the inductor from the device PGND line to the output capacitor (C2). Referring to Figure 24, the

AS1334 has two major current loops where pulse and ripple current flow. The loop shown in the left hand side is most

important, because pulse current shown in Figure 24 flows in this path. The right hand side is next. The current

waveform in this path is triangular, as shown in Figure 24. Pulse current has many high-frequency components due to

fast di/dt. Triangular ripple current also has wide high-frequency components. Board layout and circuit pattern design

of these two loops are the key factors for reducing noise radiation and stable operation. Other lines, such as from

battery to C1(+) and C2(+) to load, are almost DC current, so it is not necessary to take so much care. Only pattern

width (current capability) and DCR drop considerations are needed.

Figure 24. Current Loop

VIN

3.25V to 5.5V

fOSC = 2MHz

VDD

- 10 µF

PVIN

3.3 µH

VOUT

10 µF

SGND

PGND

POK

www.austriamicrosystems.com

Revision 1.04

14 - 17

下载PDF

型号	品牌	描述	获取价格	数据表
AS1334-BTDT-18	AMSCO	650mA, Ultra low Ripple Step Down DC/DC Converter	获取价格
AS1334-BTDT-25	AMSCO	650mA, Ultra low Ripple Step Down DC/DC Converter	获取价格
AS1334-BTDT-30	AMSCO	650mA, Ultra low Ripple Step Down DC/DC Converter	获取价格
AS1334-BTDT-33	AMSCO	650mA, Ultra low Ripple Step Down DC/DC Converter	获取价格
AS1334-BTDT-XX	AMSCO	650mA, Ultra low Ripple Step Down DC/DC Converter	获取价格
AS1335	AMSCO	1.5A, 1.5MHz, Synchronous DC/DC Step-Down Converter	获取价格