RT5796A
1.5A, 1MHz, 6V CMCOT Synchronous Step-Down Converter
General Description
The RT5796A is a high efficiency synchronous
step-down DC/DC converter. Its input voltage range is
from 2.5V to 6V and provides an adjustable regulated
output voltage from 0.6V to 3.4V while delivering up to
1.5A 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 RT5796A is available in the
T/SOT-23-5 and T/SOT-23-6 packages.
Features
Efficiency Up to 95%
R
DSON
160m HS / 110m LS
V
IN
Range 2.5V to 6V
V
REF
0.6V with
2%
Accuracy
CMCOT
™
Control Loop Design for Best
Transient Response, Robust Loop Stability with
Low-ESR (MLCC) C
OUT
Fixed Soft-Start 1.2ms; PGOOD Function in
T/SOT-23-6
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Output Under Voltage Protection (UVP Hiccup)
Thermal Shutdown Protection
Power Saving at Light Load
Ordering Information
RT5796A
Package Type
B : SOT-23-5
E : SOT-23-6
J5 : TSOT-23-5
J6 : TSOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Trim Option
H: Hiccup
PWM/PSM Mode
A : PSM/PWM
Note :
Richtek products are :
Applications
STB, Cable Modem, & xDSL Platforms
LCD TV Power Supply & Metering Platforms
General Purpose Point of Load (POL)
Pin Configurations
(TOP VIEW)
FB
5
VIN
4
FB
6
PG VIN
5
4
2
3
2
3
EN GND LX
EN GND LX
T/SOT-23-5
T/SOT-23-6
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
V
IN
C
IN
RT5796A
LX
VIN
EN
PG*
GND
FB
R2
L
V
OUT
R1
C
OUT
*For T/SOT-23-6 Package Only
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5796A-04
December 2019
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
