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  Richtek Technology Electronic Components Datasheet  

RT8088A Datasheet

2.7MHz 3A Step-Down Converter

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®
RT8088A
2.7MHz 3A Step-Down Converter with I2C Interface
General Description
The RT8088A is a full featured 5.5V, 3A, Constant-On-
Time (COT) synchronous step-down converter with two
integrated MOSFETs. The current mode COT operation
with internal compensation allows the transient response
to be optimized over a wide range of loads and output
capacitors to efficiently reduce external component count.
The RT8088A provides up to 3MHz switching frequency
to minimize the size of output inductor and capacitors.
The RT8088A is available in the WL-CSP-15B 1.31x2.11
(BSC) package.
Ordering Information
RT8088A
Package Type
WSC : WL-CSP-15B 1.31x2.11 (BSC)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
1J : Product Code
1JW
W : Date Code
Features
z 2.5V to 5.5V Input Voltage Range
z Current Mode COT Control Loop Design
z Fast Transient Response
z Internal 48mΩ and 22mΩ Synchronous Rectifier
z Highly Accurate VOUT Regulation Over Load/Line
Range
z Robust Loop Stability with Low-ESR COUT
z RoHS Compliant and Halogen Free
Applications
z Distributed Power Systems
z Enterprise Servers, Ethernet Switches & Routers, and
Global Storage Equipment
z Telecom & Industrial Equipment
Pin Configurations
(TOP VIEW)
PVIN
PVIN
PVIN
AVIN
AGND
A1 A2 A3
LX
B1 B2 B3
LX
C1 C2 C3
PGND
D1 D2 D3
EN
E1 E2 E3
SCL
PGND
PGND
PGND
SDA
FB
WL-CSP-15B 1.31x2.11 (BSC)
Simplified Application Circuit
VIN
Enable
I2C
Control
RT8088A
PVDD
LX
AVDD
FB
EN
SDA
SCL
PGND
AGND
VOUT
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS8088A-00 October 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RT8088A Datasheet

2.7MHz 3A Step-Down Converter

No Preview Available !

RT8088A
Functional Pin Description
Pin No.
Pin Name
Pin Function
A1, B1, C1 PVIN
Input Supply Voltage, 2.5V to 5.5V.
A2, B2
LX
Switch Node. The Source of the internal high-side power MOSFET, and Drain of
the internal low-side (synchronous) rectifier MOSFET.
A3, B3, C2, C3 PGND
Power Ground.
D1 AVIN
Analog Circuit Input Supply Voltage.
D2 EN
D3 SDA
Enable Control Input. Pull high to enable.
I2C Data Signal.
E1 AGND Analog Ground Should be Electrically Connected to GND Close to the Device.
E2 SCL
I2C Clock Signal.
E3 FB
Feedback Voltage Input.
Function Block Diagram
EN
AVIN
FB
SDA
SCL
UVLO
OTP
Shutdown
Control
Error Amplifier
+
-
0.8V +
RC
Comparator
+
-
VREF
CCOMP
I2C Control
TON LX
Logic
Control
Driver
Current
Limit
Detector
Current
Sense
AZC
LX
LX
PVIN
LX
PGND
AGND
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS8088A-00 October 2013


Part Number RT8088A
Description 2.7MHz 3A Step-Down Converter
Maker Richtek
Total Page 16 Pages
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