Datasheet > RT6262B

RT6262B

更新时间： 2024-09-24 17:00:39

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
28页	1027K
描述
17V Input, 2A, ACOT? Buck Converter with Both FETs OC Protection

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RT6262B 数据手册

RT6262A/B

17V Input, 2A, ACOT^®Buck Converter with Both FETs OC

Protection

General Description

Features

⚫ 2A Converter Integrated 125m and 56m FETs

⚫ Input Supply Voltage Range : 4.5V to 17V

⚫ Output Voltage Range : 0.765V to 7V

The RT6262A/B is

simple, easy-to-use, 2A

synchronous step-down DC-DC converter with an input

supply voltage range of 4.5V to 17V. The device

possesses an accurate reference voltage and

⚫ Advanced Constant On-Time (ACOT ) Control

 Ultrafast Transient Response

 Optimized for Low-ESR Ceramic Output

Capacitors

integrates low R

high efficiency.

power MOSFETs to achieve

DS(ON)

The RT6262A/B adopts Advanced Constant On-Time

⚫ High Accuracy Feedback Reference Voltage : Typ.

 1%

(ACOT ) control architecture to provide an ultrafast

transient response with few external components and

to operate in nearly constant switching frequency over

the line, load, and output voltage range. The RT6262A

operates in automatic PSM that maintains high

efficiency during light load operation. The RT6262B

operates in Forced PWM that helps meet tight voltage

regulation accuracy requirements.

⚫ Optional for Operation Modes :

 RT6262A : Power Saving Mode (PSM)

 RT6262B : Forced PWM Mode

⚫ Fixed Switching Frequency : 650kHz

⚫ Enable Control and Externally Adjustable

Soft-Start

The RT6262A/B senses both FETs current for a robust

over-current protection (OCP). The device features

cycle-by-cycle current limit protection to prevent the

device from the catastrophic damage in output short

circuit, over-current or inductor saturation conditions.

The RT6262A/B offers programmable start-up by

connecting a capacitor at external SS pin. The device

also includes input under-voltage lockout, output

under-voltage protection, and over-temperature

protection (OTP) to provide safe and smooth operation

in all operating conditions.

⚫ Input Under-Voltage Lockout (UVLO)

⚫ Protection Function

 Output Under-Voltage Protection (UVP) with

Hiccup Mode

 High- / Low-side MOSFET OCP and OTP

Function

⚫ Power Good Indication

⚫ RoHS Compliant and Halogen Free

The recommended junction temperature range is

−40C to 125C.

Simplified Application Circuit

BOOT

RT6262A/B

(Optional)

VIN

BOOT

OUT

Enable

FB1

PGOOD

FB2

GND

is a registered trademark of Richtek Technology Corporation.

DS6262A/B-02 January 2024

www.richtek.com

12 3 4 5 6 7...28

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