RT8079GQW Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT8079GQW Datasheet PDF : 13 Pages
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RT8079
Pin Configurations
(TOP VIEW)
16 15 14 13
VIN 1
VIN 2
GND 3
GND 4
GND
17
12 SW
11 SW
10 SW
9 SS/TR
5 678
WQFN-16L 3x3
Functional Pin Description
Pin No.
1, 2, 16
3, 4,
17 (Exposed Pad)
5
6
7
8
9
10 to 12
Pin Name
VIN
GND
AGND
FB
COMP
RT/SYNC
SS/TR
SW
13
BOOT
14
PGOOD
15
EN
Pin Function
Power Input.
Power Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Analog Ground.
Feedback Input.
Compensation Node for Converter Stability.
Frequency Setting and External Synchronous. Clock input.
Soft-Start and Tracking.
Switch Node. Connect this pin to external L-C filter.
Bootstrap Supply for High Side Gate Driver. Connect a capacitor between the
BOOT and SW pin.
Output of Power Good Indicator.
Chip Enable. Externally pulled high to enable and pulled low to disable this
chip. It is internally pulled up to high when the pin is floating.
Function Block Diagram
VIN
EN
RT/SYNC
SS/TR
FB
Internal pull up
current
Over Temperature
Protection
Enable Comparator
EN Threshold
Shutdown
Control
Current
Sense
UVLO
Oscillator
Slope
Compensation
Soft-Start
VREF
PWM
Comparator
Control
Logic
Error
Amplifier
PGOOD Threshold
PGOOD Comparator
Driver
BOOT
SW
GND
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
PGOOD COMP AGND
GND
is a registered trademark of Richtek Technology Corporation.
DS8079-01 February 2013
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