Datasheet > RT7241A

RT7241A

更新时间： 2024-02-19 23:07:59

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
20页	299K
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技术参数
数据手册

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RT7241A 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	23	Number of Outputs：	1
Vout (min) (V)：	0.6	Vout (max) (V)：	1.5
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	12	Current Limit (typ) (A)：	16
Freq (typ) (kHz)：	500	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	17	Ron_LS (typ) (mOhm)：	4.5
Iq (typ) (mA)：	0.1	Features：	ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type：	UQFN3x4-18(FC)

RT7241A 数据手册

RT7241A

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Switching Frequency and Min. Off Timer

Switching Frequency

Minimum On Time

Minimum Off Time

f_SW

t_ON

425

500

575

kHz

t_OFF

200

Output Under-Voltage and Over-Voltage Protection

Measured at FB, with respect to

reference voltage

OVP Trip Threshold

OVP Propagation Delay

UVP Trip Threshold

V_OVP

112

117

122

s

T_OVPDLY

V_UVP

FB force above OVP threshold

Measured at FB, with respect to

reference voltage

UVP Propagation Delay

Reference and Soft-Start

FB Reference Voltage

FB Input Bias Current

Soft-Start Time

T_UVPDLY

FB force below UVP threshold

s

V_REF

0.594

1

0.6

0.1

0.606

V_FB= 0.6V

A

t_SS

From S5 high to 90% of V_REF

0.5

1.5

Enable and UVLO

Logic-High

Logic-Low

0.8

0.4

4.5

S3, S5 Input

Voltage

VDD Input UVLO Threshold

VDD Input UVLO Hysteresis

Power Good

Wake up

3.9

4.2

0.2

Shutdown

Measured at FB, with respect to

reference, no load

Trip Threshold (Raising)

Trip Threshold (Hysteresis)

Fault Propagation Delay

Falling edge, FB forced below

PGOOD trip threshold

2.5

s

Output Low Voltage

Leakage Current

I_SINK= 1mA

0.4

I_LEAK

High state, forced to 5V

A

Thermal Shutdown

T_SD

165

C

Thermal Shutdown Hysteresis T_SD

VTT LDO

VDDQ = VLDOIN = 1.2V / 1.35V /

1.5V / 1.8V, |IVTT| = 0A

20

30

40

VDDQ = VLDOIN = 1.2V / 1.35V /

1.5V / 1.8V, |IVTT| = 1A

VTT Output Tolerance

V_VTTTOL

VDDQ = VLDOIN = 1.2V / 1.35V,

|IVTT| = 1.2A

VDDQ = VLDOIN = 1.5V / 1.8V,

|IVTT| = 1.5A

is a registered trademark of Richtek Technology Corporation.

DS7241A-02 January 2017

www.richtek.com

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