Datasheet > BD9E300EFJ-LB(E2)

BD9E300EFJ-LB(E2)

更新时间： 2023-09-03 20:24:58

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
33页	1655K
描述
本产品是面向工业设备市场的产品，保证可长期稳定供货。BD9E300EFJ-LB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。输入电压范围大(7V～36V)，可生成5.0V等低电压。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。BD9E300EFJ-LB也备有250个装的小批量卷轴产品→BD9E300EFJ-LBH2a.productlink{color: #dc2039; text-decoration: underline !important;}a.productlink:hover {opacity: 0.6;}

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BD9E300EFJ-LB(E2) 数据手册

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BD9E300EFJ-LB BD9E300UEFJ-LB

Description of Block

• VREG3

Block creating internal reference voltage 3V (Typ).

• VREG

Block creating internal reference voltage 5V (Typ).

• BOOTREG

Block creating gate drive voltage.

• TSD

This is the thermal shutdown block. Thermal shutdown circuit shuts down the whole system if temperature exceeds 175°C

(Typ). When the temperature decreases, it returns to normal operation with hysteresis of 25°C (Typ).

• UVLO

This is the under voltage lock-out block. IC shuts down when VIN is under 6.4V (Typ). The threshold voltage has a

hysteresis of 200mV (Typ).

• ERR

This circuit compares the feedback voltage at the output to the reference voltage. The output of this circuit is the COMP

terminal voltage and this determines the switching duty. Also, because of soft start during start-up, COMP terminal voltage

is controlled by internal slope voltage.

• OSC

Block generating oscillation frequency.

• SLOPE

This circuit creates a triangular wave from generated clock in OSC. The voltage converted from current sense signal of

high side MOSFET and the triangular wave is sent to PWM comparator.

• PWM

This block determines the switching duty by comparing the output COMP terminal voltage of error amplifier and output of

SLOPE block.

• DRIVER LOGIC

This is the DC/DC driver block. Input to this block is signal from PWM and output drives the MOSFETs.

• SOFT START

This circuit prevents the overshoot of output voltage and In-rush current by forcing the output voltage to rise slowly, thus,

avoiding surges in current during start-up.

• OCP

This block limits the current flowing in high side MOSFET for each cycle of switching frequency during over-current.

• RCP

This block limits the current flowing in low side MOSFET for each cycle of switching frequency during over-current.

• SCP

The short circuit protection block compares the FB terminal voltage with the internal standard voltage VREF. When the FB

terminal voltage has fallen below 0.85V (Typ) and remained in that state for 1.0msec (Typ), SCP activates and stops the

operation for 16msec (Typ) and subsequently initiates a restart.

• OVP

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

FB terminal voltage exceeds 1.30V (Typ), it turns output MOSFETs off. When output voltage drops until it reaches the

hysteresis, it will return to normal operation.

www.rohm.co

TSZ02201-0J3J0AJ00220-1-2

4/30

01.Nov.2022 Rev.004

TSZ22111•15•001

1 2 345 6 7...33

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与BD9E300EFJ-LB(E2)相关器件

型号	品牌	描述	获取价格	数据表
BD9E300EFJ-LB(H2)	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。BD9E300EFJ-LB是内置低导通	获取价格
BD9E300EFJ-LBH2	ROHM	7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter	获取价格
BD9E300UEFJ-LB(E2) (新产品)	ROHM	This product guarantees long life cycle in Industrial market. BD9E300UEFJ-LB(E2) is a sync	获取价格
BD9E300UEFJ-LB(H2) (新产品)	ROHM	This product guarantees long life cycle in Industrial market. BD9E300UEFJ-LB(H2) is a sync	获取价格
BD9E301EFJ-LB	ROHM	7.0V to 36V Input, 2.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter	获取价格
BD9E301EFJ-LB(E2)	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。BD9E301EFJ-LB是内置低导通	获取价格

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