Datasheet > RT9535

RT9535

更新时间： 2024-01-22 19:25:21

品牌	Logo	应用领域
立锜 - RICHTEK		电池
页数	文件大小	规格书
18页	1417K
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技术参数
数据手册

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RT9535 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	28	Battery Charge Voltage (max) (V)：	22
Battery Charge Current (max) (A)：	2	Input Source：	AC Adapter;USB
Features：	Adjustable Current Limit;Adjustable Soft-Start;Enable Input;OCP;UVP	Package Type：	WQFN4x4-24

RT9535 数据手册

RT9535

Functional Pin Description

Pin No.

Pin Name

Pin Function

Negative Terminal to Sense Input Current. A filter is needed to filter out the

500kHz switching noise.

ACN

ACP

Positive Terminal to Sense Input Current.

ACDRV

Drive Signal for the Gate of Input Power PFET.

Enable Control Input (Active High). It must be connected to a logical voltage or

pulled up to VIN with a 100k resistor.

Soft-Start Control Input. SS controls the soft-start time. Connect a capacitor

from SS pin to GND to set the soft-start time.

Charge Current Setting and System Loop Compensation Pin. Connect a

resistor from this pin to ground to set the charge current.

ISET

Control Signal of the Inner Loop of the Current Mode PWM. A capacitor of at

least 0.1F with a serial resistor to GND filters out the current ripple.

Flag to Indicate Charge Completion. It turns to logical high when the charge

current drops blew 17% of the setting charge current. A 0.1F capacitor from

STATUS to ground is needed to filter the sampled charge current ripple.

STATUS

NTC

FBR

Input for an external NTC thermistor for battery temperature monitoring.

Negative Terminal of External Resistor Divider for Battery Voltage Feedback.

Battery Voltage Feedback. Using an external resistor divider to set battery full

charge voltage.

VFB

To supply the current sense amplifier CAfor very low dropout condition. It must

be connected as shown in the typical application circuit or connected to VIN if

VIN is always larger than BATT by at least 1.8V.

VHH

BATT

Battery Voltage Sensing Input. A 10F or larger X5R ceramic capacitor is

recommended for filtering charge current ripple and stability purpose.

SNSL

SNSH

PGND

Negative Terminal for Sensing Charge Current.

Positive Terminal for Sensing Charge Current.

Power Ground.

Switch Node. This pin switches between ground and VIN with high dv/dt rates.

Care needs to be taken in the PCB layout to keep this node from coupling to

other sensitive nodes.

17, 18

19, 20

Drain of Internal High-Side power N-MOSFET Switch. Connect a low ESR

capacitor of 10F or higher from this pin to ground for good bypass.

HSD

BOOT

VIN

Bootstrap Supply for the High-Side Power Switch Gate Driver and Control

Circuitry. In normal operation, V_BOOT≈ V_SW+ 5V.

Input Power Supply. Connect a low ESR capacitor of 10F or higher from this

pin to ground for good bypass.

Output of Internal 5V LDO. Connect a 1F ceramic capacitor from this pin to

GND for stability.

V5V

Analog Ground. Layout input capacitor and V5V capacitor to this pin as close

as possible.

GND

Exposed Pad. Connect the exposed pad to GND.

(Exposed Pad)

is a registered trademark of Richtek Technology Corporation.

DS9535-04 February 2016

www.richtek.com

1 234 5 6 7...18

中文翻译

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与RT9535相关器件

型号	品牌	获取价格	描述	数据表
RT9535A	RICHTEK	获取价格	暂无描述
RT9535B	RICHTEK	获取价格	暂无描述
RT9536	RICHTEK	获取价格	暂无描述
RT9536H	RICHTEK	获取价格	暂无描述
RT9538	RICHTEK	获取价格	暂无描述
RT9541	ETC	获取价格	LI LON BATTERY PROTECTOR
RT9541ACE	ETC	获取价格	LI LON BATTERY PROTECTOR
RT9541ACER	ETC	获取价格	LI LON BATTERY PROTECTOR
RT9541BCE	ETC	获取价格	LI LON BATTERY PROTECTOR
RT9541BCER	ETC	获取价格	LI LON BATTERY PROTECTOR

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