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RT6150A/B
Current Mode Buck-Boost Converter
General Description
Features
Single Inductor
The RT6150A/B is a high efficiency, fixed frequency, Buck-
BoostDC-DC converter that operates from input voltages
above, below or equal to the output voltage. The topology
incorporated in the IC provides a continuous transfer
function through all operating modes, making the product
ideal for single lithium-ion, multi-cell alkaline or Ni-MH
battery applications where the output voltage is within the
battery voltage range.
Fixed Frequency Operation with Battery Voltages
Synchronous Rectification : Up to 90% Efficiency
Up to 800mA Continuous Output Current
VOUT Disconnected from VIN during Shutdown
Power Save Mode (PSM) Enable Control
<1μA Shutdown Current
Input Voltage Range: 1.8V to 5.5V
Fixed 3.3V and Adjustable Output Voltage Options
from 2.5V to 5.5V
The device includes twoN-MOSFET switches and two P-
MOSFET switches for high efficiency operation. Switching
frequency is set at 1MHz to reduce the external
component size. Quiescent current is only 60μA in Power
Save Mode (PSM), maximizing battery life in portable
applications. PSM operation is user controlled and can
be enabled by driving the PS pin low. If the PS pin is
driven high, then fixed frequency switching is enabled.
10-Lead WDFN Packages
RoHS Compliant and Halogen Free
Ordering Information
RT6150A/B-
Package Type
QW : WDFN-10L 3x3 (W-Type)
QW : WDFN-10L 2.5x2.5 (W-Type)
Other features include low shutdown current, internal
soft-start control, thermal shutdown protection and current
limit. The RT6150A is available in the WDFN-10L 3x3
package and the RT6150B is available in the WDFN-10L
2.5x2.5 package.
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Voltage
33 : 3.3V (Only for RT6150B)
A : WDFN-10L 3x3
B : WDFN-10L 2.5x2.5
Applications
Note :
Portable Products
Richtek products are :
Handheld Instrumentation
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.
Simplified Application Circuit
LX1
LX2
RT6150A/B
Battery
VOUT
V
VIN
OUT
R1
R2
VINA
FB
Enable
EN
PS
GND
Copyright 2018 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6150A/B-06 July 2018
www.richtek.com
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