Datasheet > RT7251B

RT7251B

更新时间： 2024-01-27 08:55:21

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	216K
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中文翻译

获取价格

技术参数
数据手册

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RT7251B 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)：	1.5	Current Limit (typ) (A)：	3
Freq (typ) (kHz)：	800	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	145	Ron_LS (typ) (mOhm)：	140
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：	WDFN2x2-8

RT7251B 数据手册

RT7251A/B

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Minimum On-Time

t_ON

100

Input Under Voltage Lockout

Threshold

Input Under Voltage Lockout

Threshold Hysteresis

V_UVLO

3.5

V_UVLO

200

Logic-High V_IH

2.7

0.4

EN Threshold

Voltage

Logic-Low

V_IL

EN Pull Low Current

Soft-Start Period

V_EN= 2V, V_FB= 1V

A

C

t_SS

Thermal Shutdown

T_SD

150

0.7

Thermal Shutdown Hysteresis T_SD

Power Good Threshold Rising

Power Good Threshold

Hysteresis

130

Power Good Pull Down

Resistance

125



%V_REF

s

Output OVP Threshold

Output OVP Propagation

Delay

Note 1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

These are stress ratings only, and functional operation of the device at these or any other conditions beyond those

indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating

conditions may affect device reliability.

Note 2. θ_JAis measured at T_A= 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θ_JCis

measured at the exposed pad of the package.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

is a registered trademark of Richtek Technology Corporation.

DS7251A/B-02 June 2018

www.richtek.com

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