RT9505 데이터 시트보기 (PDF) - Richtek Technology

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RT9505

Linear Single Cell Li-Ion Battery Charger IC

Richtek Technology 

RT9505

` The GND should be connected to a strong ground plane for heat sinking and noise protection.

` The connection of RSETA should be isolated from other noisy traces. The short wire is recommended to prevent EMI and

noise coupling.

` Output capacitor should be placed close to IC and connected to ground plane to reduce noise coupling.

` The TS's capacitor should be placed close to TS (Pin 9) and connected to ground plane. The capacitance (0.1uF to

10uF) base on PCB layout. When PCB has poor layout, the 10uF is recommended to prevent noise.

The capacitor should be

placed close to IC pin and

connected to ground plane.

C1

ACIN 1

NC 2

CHG_S 3

PGOOD 4

GND 5

GND

GND

The GND should be connected to a

strong ground plane for heat sinking

and noise protection.

C3

10 BATT

9 TS

8 EN

7 NC

ISETA

RSETA

Battery

C2

The TS's capacitor should be

placed close to TS(Pin 9) and

connected to ground plane.

The capacitance (0.1uF to

10uF) base on PCB layout.

When PCB has poor layout

the 10uF is recommended to

prevent noise.

The connection of RSETA should be

isolated from other noisy traces.

The short wire is recommended to

prevent EMI and noise coupling.

Figure 4

www.richtek.com

10

DS9505-02 April 2011

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