Datasheet > RT8237C

RT8237C

更新时间： 2024-02-19 04:01:36

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
17页	228K
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RT8237C 技术参数

Status：	Active	Vs (typ) (V)：	5
Vin (min) (V)：	4.5	Vin (max) (V)：	26
Vout (min) (V)：	0.7	Vout (max) (V)：	3.3
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：	0.5	Freq (typ) (kHz)：	290;340;380;430
Freq (min) (kHz)：		Freq (max) (kHz)：
Iq (typ) (mA)：	0.5	Features：	Adjustable Current Limit;Adjustable Frequency;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;OVP;Power Good;SCP;Selectable (PSM or PWM);UVP
Package Type：	WDFN3x3-10	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS8237CD-07.pdf

RT8237C 数据手册

RT8237C/D

High Efficiency Single Synchronous Buck PWM Controller

General Description

Features

^Wide Input Voltage Range : 4.5V to 26V

^Output Voltage Range : 0.7V to 3.3V

^Built-In 0.5% 0.7V Reference Voltage

^Quick Load-Step Response within 100ns

^4700ppm/°C Programmable Current Limit by Low

Side R_DS(ON)Sensing

The RT8237C/DPWM controller provides high efficiency,

excellent transient response, and highDC output accuracy

needed for stepping down high voltage batteries to

generate low voltage CPU core, I/O, and chipset RAM

supplies in notebook computers.

The constant on-time PWM control scheme handles wide

input/output voltage ratios with ease and provides 100ns

“instant-on” response to load transients while maintaining

a relatively constant switching frequency.

^4 Selectable Frequency Setting

^Soft-Start Control

^Drives Large Synchronous-Rectifier FETs

^Integrated Boot Switch

The RT8237C/Dachieves high efficiency at a reduced cost

by eliminating the current sense resistor found in

traditional current mode PWMs. Efficiency is further

enhanced by its ability to drive very large synchronous

rectifier MOSFETs and enter diode emulation mode at

light load condition. The buck conversion allows this device

to directly step down high voltage batteries at the highest

possible efficiency. The pre-set frequency selections

minimize design effort required for new designs. The

RT8237C/Dis intended for CPU core, chipset, DRAM, or

other low voltage supplies as low as 0.7V. The RT8237C

is available in a WDFN-10L 3x3 package, The RT8237Dis

available in a WQFN-12L 2x2 package.

^Built-In OVP/OCP/UVP

^Thermal Shutdown

 Power Good Indicator

 RoHS Compliant and Halogen Free

Applications

 Notebook Computers

 CPU Core Supply

 Chipset/RAM Supply as Low as 0.7V

 GenericDC-DC Power Regulator

Pin Configuration

(TOP VIEW)

PGOOD

BOOT

UGATE

PHASE

VCC

LGATE

Ordering Information

(2)

RT8237

Pin 1 Orientation

(2) : Quadrant 2, Follow EIA-481-D

WDFN-10L 3x3

RT8237C

Package Type

QW : WDFN-10L 3x3 (W-Type)

QW : WQFN-12L 2x2 (W-Type)

Lead Plating System

12 11 10

Z : ECO (Ecological Element with

Halogen Free and Pb free)

LGATE

GND

VCC

C : WDFN-10L 3x3

D : WQFN-12L 2x2

PHASE

Note :

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

WQFN-12L 2x2

RT8237D

 Suitable for use in SnPb or Pb-free soldering processes.

is a registered trademark of Richtek Technology Corporation.

DS8237C/D-07 September 2016

www.richtek.com

12 3 4 5 6 7...17

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与RT8237C相关器件

型号	品牌	描述	获取价格	数据表
RT8237D	RICHTEK	暂无描述	获取价格
RT8237E	RICHTEK	暂无描述	获取价格
RT8237F	RICHTEK	暂无描述	获取价格
RT8237H	RICHTEK	暂无描述	获取价格
RT8237J	RICHTEK	暂无描述	获取价格
RT8237K	RICHTEK	High Efficiency Single Synchronous Buck PWM Controller	获取价格

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