Datasheet > BD9A300MUV

BD9A300MUV

更新时间： 2023-09-03 20:38:14

品牌	Logo	应用领域
罗姆 - ROHM		开关转换器稳压器
页数	文件大小	规格书
35页	2747K
描述
BD9A300MUV是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输出3A的电流。凭借SLLM™控制，实现轻负载状态的良好效率特性，适用于要降低待机功耗的设备。振荡频率1MHz的高速产品，适用于小型电感。是电流模式控制DC/DC转换器，具有高速瞬态响应性能，可轻松设定相位补偿。

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

BD9A300MUV 数据手册

BD9A300MUV

Description of Blocks

1. VREF

The VREF block generates the internal reference voltage.

2. UVLO

The UVLO block is for under voltage lockout protection. It will shut down the IC when the VIN falls to 2.45V (Typ) or lower.

The threshold voltage has a hysteresis of 100mV (Typ).

3. SCP

After the soft start is completed and when the feedback voltage of the output voltage has fallen below 0.4V (Typ) for

1msec (Typ), the SCP stops the operation for 16msec (Typ) and subsequently initiates restart.

4. OVP

Over voltage protection function (OVP) compares FB terminal voltage with the internal standard voltage VREF. When the

FB terminal voltage exceeds 0.88V (Typ) it turns MOSFET of output part MOSFET off. After output voltage drop it returns

with hysteresis.

5. TSD

The TSD block is for thermal protection. The thermal protection circuit shuts down the device when the internal

temperature of IC rises to 175C (Typ) or higher. Thermal protection circuit resets when the temperature falls. The circuit

has a hysteresis of 25°C (Typ).

6. SOFT START

The Soft Start circuit slows down the rise of output voltage during start-up and controls the current, which allows the

prevention of output voltage overshoot and inrush current. A built-in soft start function is provided and a soft start is

initiated in 1msec (Typ) when the SS terminal is open.

7. gm Amplifier

The gm Amplifier block compares the reference voltage with the feedback voltage of the output voltage. The error and

the ITH terminal voltage determine the switching duty. A soft start is applied at startup. The ITH terminal voltage is limited

by the internal slope voltage.

8. Current Comparator

The Current Comparator block compares the output ITH terminal voltage of the error amplifier and the slope block signal

to determine the switching duty. In the event of over current, the current that flows through the high-side MOSFET is

limited at each cycle of the switching frequency.

9. OSC

This block generates the oscillating frequency.

10.DRIVER LOGIC

This block is a DC/DC driver. A signal from current comparator is applied to drive the MOSFETs.

11.PGOOD

When the FB terminal voltage reaches 0.8V (Typ) within ±7%, the Nch MOSFET of the built-in open drain output turns off

and the output turns high.

www.rohm.com

TSZ02201-0J3J0AJ00350-1-2

30.Jun.2017 Rev.003

4/32

TSZ22111・15・001

1 2 345 6 7...35

下载PDF

与BD9A300MUV相关器件

型号	品牌	描述	获取价格	数据表
BD9A301MUV-LB	ROHM	本产品是面向工业设备市场的产品，保证可长期稳定供货。是适合这些用途的产品。BD9A301M	获取价格
BD9A302QWZ	ROHM	BD9A302QWZ是内置低导通电阻的功率MOSFET的同步整流降压型DC/DC转换器。最	获取价格
BD9A400MUV	ROHM	BD9A400MUV是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输	获取价格
BD9A600MUV	ROHM	BD9A600MUV是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输	获取价格
BD9B100MUV	ROHM	BD9B100MUV是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输	获取价格
BD9B200MUV	ROHM	BD9B200MUV是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输	获取价格

与BD9A300MUV相关文章

STM32H743技术深度剖析与应用案例探索
2024-05-30

15
LM321中文资料解析：引脚功能介绍、技术特点、技术特性分析
2024-05-30

15
74HC14芯片资料介绍：性能特性分析、引脚介绍
2024-05-30

13
LM1875芯片手册：功放参数分析、引脚说明、电路设计要点
2024-05-30

10

产品中心

服务支持

精选活动

关于我们

帮助中心

BD9A300MUV

BD9A300MUV 数据手册

与BD9A300MUV相关器件

与BD9A300MUV相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

BD9A300MUV

BD9A300MUV 数据手册

与BD9A300MUV相关器件

与BD9A300MUV相关文章

您还可以找

您在本页遇到什么问题？