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RT4805BWSC Datasheet(PDF) 2 Page - Richtek Technology Corporation

No. de pieza RT4805BWSC
Descripción Electrónicos  Synchronous Boost Regulator
PDF  23 Pages
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Fabricante Electrónico  RICHTEK [Richtek Technology Corporation]
Página de inicio  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT4805BWSC Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT4805B
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
DS4805B-01
April
2017
2
Ordering Information
RT4805B
Package Type
WSC : WL-CSP-16B 1.67x1.67 (BSC)
Note :
Richtek products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
Pin Configuration
(TOP VIEW)
VIN
EN PGOOD
VSEL
VOUT
SCL
SDA
nBYP
LX
LX
AGND PGND
PGND
PGND
VIN
VOUT
A1
A2
A3
A4
B1
B2
B3
B4
C1
C2
C3
C4
D1
D2
D3
D4
WL-CSP-16B 1.67x1.67 (BSC)
4M : Product Code
W : Date Code
4MW
Functional Pin Description
Pin No.
Pin Name
Pin Function
A1
EN
Enable. When this pin is HIGH, the circuit is enabled.
A2
PGOOD
Power good. It is a open-drain output. PGOOD pin pulls low automatically if
the overload or OTP event occurs.
A3, A4
VIN
Input voltage. Connect to Li-Ion battery input power source.
B1
VSEL
Output voltage select. When boost is running, this pin can be used to select
output voltage
B2
SCL
Serial interface clock. (Pull down if I2C is non-used).
B3, B4
VOUT
Output voltage. Place COUT as close as possible to the device.
C1
nBYP
Bypass. This pin can be used to activate forced bypass mode. When this pin
is LOW, the bypass switches are turned on and the IC is otherwise inactive.
C2
SDA
Serial interface date line. (Pull down if I2C is non-used).
C3, C4
LX
Switching node. Connect to inductor.
D1
AGND
Analog ground. This is the signal ground reference for the IC. All voltage
levels are measured with respect to this pin.
D2, D3, D4
PGND
Power ground. This is the power return for the IC. The COUT bypass
capacitor should be returned with the shortest path possible to these pins.



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