Buck Converter. RT6219 Datasheet


RT6219 Converter. Datasheet pdf. Equivalent


Part Number

RT6219

Description

Synchronous Buck Converter

Manufacture

Richtek

Total Page 17 Pages
Datasheet
Download RT6219 Datasheet


RT6219
®
RT6219
4A, 23V, 500kHz, ACOTTM Synchronous Buck Converter
General Description
The RT6219 is a synchronous Buck converter with
Advanced Constant On-Time (ACOTTM) mode control which
provides a very fast transient response with no external
compensators. The RT6219 operates from 5V to 23V input
voltage, provides complete protection functions including
Over Current Protection(OCP), Under Voltage
Protection(UVP) and Over Voltage Protection(OVP). This
IC also provides a 1.5ms internal soft-start function and
an open-drain power good indicator.
Ordering Information
RT6219
Package Type
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
PWM Operation / VOUT Protection
A : with DEM/Latch
AH : with DEM/Hiccup
BL : without DEM/Latch
BH : without DEM/Hiccup
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.
Features
5V to 23V Input Voltage Range
Adjustable from 0.6V to 5V Output Range
Up to 98% Duty for 2S Battery Application
500kHz Switching Frequency
ACOTTM Mode Performs Fast Transient Response
Integrated MOSFETs
67mΩ of High-Side MOSFET
41mΩ of Low-Side MOSFET
Supports MLCC Output Capacitors
Internal Soft-Start (1.5ms typ)
Built-in OVP/UVP/OCP
Power Good Indicator
Thermal Shutdown
Applications
Laptop Computers
Tablet PCs
Networking Systems
Servers
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
Simplified Application Circuit
VIN
Enable
VSYS
RBYP
CIN
CEN
VIN
EN
BOOT
RT6219
SW
VBYP
CBYP
PGND
FB
PGOOD
VCC
CB
L
RPGOOD
VCC
CVCC
VOUT
R1 COUT
R2
Copyright ©2017 Richtek Technology Corporation. All rights reserved.
DS6219-05 March 2017
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

RT6219
RT6219
Marking Information
RT6219AGQW
6K=YM
DNN
6K= : Product Code
YMDNN : Date Code
RT6219BLGQW
7Q= : Product Code
7Q=YM
DNN
YMDNN : Date Code
RT6219AHGQW
7S= : Product Code
7S=YM
DNN
YMDNN : Date Code
RT6219BHGQW
7R= : Product Code
7R=YM
DNN
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
PGOOD 1
VBYP 2
VIN 3
EN 4
FB 5
10 SW
9 SW
8 SW
7 BOOT
11 6 VCC
WDFN-10L 3x3
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8, 9, 10
11
(Exposed Pad)
Pin Name
PGOOD
VBYP
VIN
EN
FB
VCC
BOOT
SW
PGND
Pin Function
Open-Drain Power Good Indicator Output.
Switch Over Input Supply Voltage for VCC. A low pass filter should be connected
to AGND, if VBYP is applied. If VBYP is not used, then connect to AGND. Do not
connect to VCC pin.
Power Input Connect to High-Side MOSFET Drain.
Enable Control Input. Do not leave this pin floating. The slew rate of EN is
recommended to be slower than 4.8V/s.
Feedback Voltage Input.
5V Linear Regulator Output for Internal Control Circuit. Bypass VCC to AGND
with a 2.2F capacitor. VCC can only supply internal circuits. Do not connect to
external loads.
Bootstrap Supply for High-Side Gate Driver. A capacitor is needed to drive the
power switch's gate above the supply voltage. It is connected between the SW
and BOOT pins to form a floating supply across the power switch driver.
Switch Node.
Power Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Copyright ©2017 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS6219-05 March 2017


Features ® RT6219 4A, 23V, 500kHz, ACOTTM Synch ronous Buck Converter General Descript ion The RT6219 is a synchronous Buck co nverter with Advanced Constant On-Time (ACOTTM) mode control which provides a very fast transient response with no ex ternal compensators. The RT6219 operate s from 5V to 23V input voltage, provide s complete protection functions includi ng Over Current Protection(OCP), Under Voltage Protection(UVP) and Over Voltag e Protection(OVP). This IC also provide s a 1.5ms internal soft-start function and an open-drain power good indicator. Ordering Information RT6219 Package Ty pe QW : WDFN-10L 3x3 (W-Type) Lead Plat ing System G : Green (Halogen Free and Pb Free) PWM Operation / VOUT Protectio n A : with DEM/Latch AH : with DEM/Hicc up BL : without DEM/Latch BH : without DEM/Hiccup Note : Richtek products are :  RoHS compliant and compatible wit h the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnP b or Pb-free soldering processes. Features  5V to 23V Input Voltag.
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