Datasheet > RTQ2816

RTQ2816

更新时间： 2024-01-05 01:57:32

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
20页	221K
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技术参数
数据手册

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RTQ2816 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	1
Vout (min) (V)：	0.8	Vout (max) (V)：	15
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	6	Current Limit (typ) (A)：	10
Freq (typ) (kHz)：		Freq (min) (kHz)：	200
Freq (max) (kHz)：	1600	Ext Sync：	Yes
Ron_HS (typ) (mOhm)：	26	Ron_LS (typ) (mOhm)：	19
Iq (typ) (mA)：	0.6	Features：	100% Duty Cycle;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;OCP;OTP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	WQFN3.5x3.5-14A

RTQ2816 数据手册

RTQ2816

Functional Block Diagram

PGOOD EN

VIN

PVIN

Comparator

Thermal

Detector

hys

UVLO

91% V

REF

PGOOD

Logic

Regulator

Shutdown

109% V

REF

Logic

= 1.21V

Comparator

BOOT

Shutdown

Slope

Compensation

High-Side

Current Sense

Power Stage

Control

Logic,

Driver, and

Boot UVLO

SS/TR

REF

Current

Comparator

Voltage

Reference

Oscillator with

RT/SYNC

Function

Low-Side

Current Sense

GND

COMP

RT/SYNC

Operation

UV Comparator

Error Amplifier

If the feedback voltage (V_FB) is lower than threshold voltage

(91% of V_REF), the UV Comparator's output goes high

and the logic control circuit is allowed to turn on the

MOSFET to pull PGOOD pin to low.

The device uses a transconductance error amplifier. The

error amplifier compares the FB pin voltage with the SS/

TR pin voltage and the internal reference voltage which is

0.8V. The transconductance of the error amplifier is 1300

μA/V during normal operation. The compensation network

should be connected between the COMP pin and ground.

OV Comparator

If the feedback voltage (V_FB) is higher than threshold voltage

(109% of V_REF), the OV Comparator's output goes high

and the logic control circuit is allowed to turn on the

MOSFET to pull PGOOD pin to low.

Oscillator with RT/SYNC Function

The switching frequency is adjustable by an external

resistor connected between the RT/SYNC pin and GND.

The available frequency range is from 200kHz to 1.6MHz.

An internal synchronized circuit has been implemented

to switch from RT mode to SYNC mode. To implement

the synchronization function, connect a square wave clock

signal to the RT/SYNC pin with a duty cycle between

10% to 90%. The switching cycle is synchronized to the

falling edge of the external clock at RT/SYNC pin.

Voltage Reference

The converter produces a precise 1% voltage reference

over-temperature by scaling the output of a temperature

stable bandgap circuit.

is a registered trademark of Richtek Technology Corporation.

DSQ2816-00 August 2019

www.richtek.com

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