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RT9535 PDF预览

RT9535

更新时间: 2024-01-04 06:35:04
品牌 Logo 应用领域
立锜 - RICHTEK 电池
页数 文件大小 规格书
18页 1417K
描述
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RT9535 技术参数

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

RT9535 数据手册

 浏览型号RT9535的Datasheet PDF文件第1页浏览型号RT9535的Datasheet PDF文件第2页浏览型号RT9535的Datasheet PDF文件第4页浏览型号RT9535的Datasheet PDF文件第5页浏览型号RT9535的Datasheet PDF文件第6页浏览型号RT9535的Datasheet PDF文件第7页 
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.  
1
ACN  
2
3
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 100kresistor.  
4
5
6
7
EN  
Soft-Start Control Input. SS controls the soft-start time. Connect a capacitor  
from SS pin to GND to set the soft-start time.  
SS  
Charge Current Setting and System Loop Compensation Pin. Connect a  
resistor from this pin to ground to set the charge current.  
ISET  
VC  
Control Signal of the Inner Loop of the Current Mode PWM. A capacitor of at  
least 0.1F 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 0.1F capacitor from  
STATUS to ground is needed to filter the sampled charge current ripple.  
8
STATUS  
9
NTC  
FBR  
Input for an external NTC thermistor for battery temperature monitoring.  
Negative Terminal of External Resistor Divider for Battery Voltage Feedback.  
10  
Battery Voltage Feedback. Using an external resistor divider to set battery full  
charge voltage.  
11  
12  
13  
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 10F or larger X5R ceramic capacitor is  
recommended for filtering charge current ripple and stability purpose.  
14  
15  
16  
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  
SW  
Drain of Internal High-Side power N-MOSFET Switch. Connect a low ESR  
capacitor of 10F 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, VBOOT VSW + 5V.  
21  
22  
23  
24  
Input Power Supply. Connect a low ESR capacitor of 10F or higher from this  
pin to ground for good bypass.  
Output of Internal 5V LDO. Connect a 1F 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  
GND  
25  
Exposed Pad. Connect the exposed pad to GND.  
(Exposed Pad)  
Copyright © 2016 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DS9535-04 February 2016  
www.richtek.com  
3

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