Step-Down Converter. RT8097B Datasheet


RT8097B Converter. Datasheet pdf. Equivalent


Part Number

RT8097B

Description

6V CMCOT Synchronous Step-Down Converter

Manufacture

Richtek

Total Page 16 Pages
Datasheet
Download RT8097B Datasheet


RT8097B
RT8097B
2A, 1MHz, 6V CMCOT Synchronous Step-Down Converter
General Description
The RT8097B is a high efficiency synchronous step-
down DC-DC converter. Its input voltage range is from
2.7V to 6V and provides an adjustable regulated output
voltage from 0.6V to 3.4V while delivering up to 2A of
output current.
The internal synchronous low on-resistance power
switches increase efficiency and eliminate the need for
an external Schottky diode. The Current Mode
Constant-On-time (CMCOT) operation with internal
compensation allows the transient response to be
optimized over a wide range of loads and output
capacitors. The RT8097B is available in the SOT-23-5/6
package.
Features
Efficiency Up to 95%
RDSON 100mHS / 70mLS
VIN Range 2.7V to 6V
VREF 0.6V with 1.2% Accuracy at 25C
CMCOTControl Loop Design for
Best
Transient Response, Robust Loop Stability with
Low-ESR (MLCC) COUT
Soft-Start 1.2ms; PGOOD Function in SOT-23-6
Applications
STB, Cable Modem, & xDSL Platforms
LCD TV Power Supply & Metering Platforms
General Purpose Point of Load (POL)
Ordering Information
RT8097B
Package Type
B : SOT-23-5
E : SOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Option
H : Hiccup
L : Latched-Off
B : Forced PWM
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.
Simplified Application Circuit
VIN
CIN
RT8097B
VIN LX
L
VOUT
EN R1 COUT
PG* FB
GND
R2
*For SOT-23-6 Package Only
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
DS8097B-08 May 2019
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

RT8097B
RT8097B
Pin Configuration
(TOP VIEW)
FB VIN
54
FB PG VIN
654
23
EN GND LX
23
EN GND LX
SOT-23-5
SOT-23-6
Marking Information
RT8097BHGB
4L=DNN
4L= : Product Code
DNN : Date Code
RT8097BLGB
4K=DNN
4K= : Product Code
DNN : Date Code
RT8097BHGE
1T=DNN
1T= : Product Code
DNN : Date Code
RT8097BLGE
1S=DNN
1S= : Product Code
DNN : Date Code
Functional Pin Description
Pin No.
SOT-23-5 SOT-23-6
11
22
33
Pin Name
EN
GND
LX
Enable control input.
Power ground.
Switch node.
Pin Function
4
4 VIN
Supply voltage input. The RT8097B operates from a 2.7V to 6V input.
5
6 FB
Feedback voltage input. An external resistor divider from the output to
GND, tapped to the FB pin, sets the output voltage.
Power good indicator. The output of this pin is an open-drain with external
--
5 PG
pull-up resistor. PG is pulled up when the FB voltage is within 90%,
otherwise it is LOW.
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS8097B-08 May 2019


Features RT8097B 2A, 1MHz, 6V CMCOT Synchronous Step-Down Converter General Descriptio n The RT8097B is a high efficiency sync hronous stepdown DC-DC converter. Its i nput voltage range is from 2.7V to 6V a nd provides an adjustable regulated out put voltage from 0.6V to 3.4V while del ivering up to 2A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Sch ottky diode. The Current Mode Constant- On-time (CMCOT) operation with internal compensation allows the transient resp onse to be optimized over a wide range of loads and output capacitors. The RT8 097B is available in the SOT-23-5/6 pac kage. Features  Efficiency Up to 9 5%  RDSON 100m HS / 70m LS VIN Range 2.7V to 6V  VREF 0.6V wi th 1.2% Accuracy at 25C  CMCOT ™ Control Loop Design for Best Tran sient Response, Robust Loop Stability w ith Low-ESR (MLCC) COUT  Soft-Start 1.2ms; PGOOD Function in SOT-23-6 Applications  STB, Cable Modem, & xDSL Platforms.
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