Datasheet > RT7252B

RT7252B

更新时间： 2024-02-26 12:39:13

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	172K
描述
暂无描述

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

RT7252B 技术参数

Status：	Active	Vin (min) (V)：	4
Vin (max) (V)：	17	Number of Outputs：	1
Vout (min) (V)：	0.8	Vout (max) (V)：	12
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	2	Current Limit (typ) (A)：	3.6
Freq (typ) (kHz)：	800	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	155	Ron_LS (typ) (mOhm)：	150
Iq (typ) (mA)：	0.6	Features：	Current Mode Control;Enable Input;Internal Compensation;OCP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	PSOP-8

RT7252B 数据手册

RT7252A/B

Functional Pin Description

Pin No.

Pin Name

Pin Function

Switch node. Connect to external L-C filter.

Input supply voltage. Must bypass with a suitably large ceramic

capacitor.

VIN

Bootstrap for high side gate driver. Connect 0.01F or greater ceramic

capacitor from BOOT to SW pin.

BOOT

Chip enable. A logic-high enables the converter; a logic-low forces the

RT7252A/B into shutdown mode, reducing the supply current to less

than 5A. Attach this pin to VIN with a 100k pull up resistor for

automatic startup.

Feedback input pin. For an adjustable output, connect an external

resistive voltage divider to this pin.

Power good indicator with open drain. The output of this pin is pulled to

low when the FB is lower than 0.7V; otherwise it is high impedance. A

100k pull-high resistor is needed.

PGOOD

Ground. The exposed pad must be soldered to a large PCB and

connected to GND for maximum power dissipation.

7, 9 (Exposed Pad)

GND

No internal connection.

Functional Block Diagram

VIN

Internal

Regulator

OSC

340kHz/800kHz

Enable

Comparator

Slope Comp

2.5V

Current Sense

Amplifier

Foldback

Control

BOOT

155m

150m

OV Comparator

0.4V

0.8V

Current

Comparator

UV Comparator

Error Amp

PGOOD

GND

Comparator

35pF

400k

0.7V

1pF

PGOOD

is a registered trademark of Richtek Technology Corporation.

DS7252A/B-02 June 2018

www.richtek.com

1 234 5 6 7...14

中文翻译

下载PDF

与RT7252B相关器件

型号	品牌	描述	获取价格	数据表
RT7252BZSP	RICHTEK	IC REG BUCK ADJ 2A SYNC 8SOP	获取价格
RT7253A	RICHTEK	3A, 17V, 340kHz Synchronous Step-Down Converter	获取价格
RT7255A	RICHTEK	暂无描述	获取价格
RT7255AGV8	RICHTEK	IC REG BUCK ADJ 1.5A SYNC SOT23-	获取价格
RT7255C	RICHTEK	暂无描述	获取价格
RT7255CGV8	RICHTEK	IC REG BUCK ADJ 1.5A SYNC SOT23-	获取价格