Datasheet > RT9534

RT9534

更新时间： 2024-02-15 22:20:01

品牌	Logo	应用领域
立锜 - RICHTEK		电池
页数	文件大小	规格书
18页	1330K
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数据手册

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RT9534 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)：	10	Input Source：	AC Adapter
Features：	Adjustable Current Limit;Adjustable Soft-Start;Enable Input;OCP;OVP;UVP	Package Type：	WQFN4x4-24
Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS9534-00.pdf

RT9534 数据手册

RT9534

High Efficiency Switching Mode Battery Charger

General Description

Features

The RT9534 is a PWM switch mode battery charger

controller to fast charge single or multiple Li-Ion, NiMH

and NiCd batteries, using constant current or constant

voltage control. Maximum current can be easily

programmed by external resistor. The constant voltage

output can support up to 22V with 0.5% accuracy.

A third control loop limits the input current drawing from

the adapter during charging. This allows simultaneous

operation of the equipment and fast battery charging

without over loading to the adapter.

 Fast Charging for Li-Ion, NiMH and NiCd Batteries

 Adjustable Battery Voltages from 2.5V to 22V

 High Efficiency : Up to 95%

 Charging Current Programmed by Resistor

 Precision 0.5% Charging Voltage Accuracy

 Provide 5% Charging Current Accuracy

 Input Current Limit Maximizes Charging Rate

 Synchronous Converter with 400kHz Switching

Frequency

 Flag Indicates Li-Ion Charge Completion

 Auto Shutdown with Adapter Removal

The RT9534 can charge batteries from 2.5V to 22V

with dropout voltage as low as 0.4V. A diode is not

required in series with the battery because the charger

automatically enters a 10μA sleep mode when the

adapter is unplugged. A logic output indicates Li-Ion full

charge when current drops to 20% of the full-scale

programmed charge current.

Applications

 Notebook Computers

 Portable Instruments

 Chargers for Li-lon, NiMH, NiCd and Lead Acid

Rechargeable Batteries

The RT9534 is available in WQFN-24L 4x4 Package.

Simplified Application Circuit

SI4435

RS4

V_IN

MMSD4148T1G

To VHH Pin

V5V

BOOT

ACN

ACP

RF2



^{= 2.5 }









V_BATT

SI4412

RF1+200

BATT

ACDRV

RS1

VIN

RT9534

SI4412

RF2

RS3

RS2

ISET

PGND

C_BATT

SGND

V5V

MODE

NTC

RF1

FBR

VFB

R 9

STATUS

Css

R 10

NTC

200

C11

is a registered trademark of Richtek Technology Corporation.

DS9534-00 August 2015

www.richtek.com

12 3 4 5 6 7...18

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