Texas Instruments LM61460EVM, User Manual, Page: 4 / 26

1 Introduction
1.1 LM61460 Synchronous Step-Down Voltage Converter
The LM61460-Q1 device is an easy-to-use synchronous step-down DC/DC converter capable of driving up to
6 A of load current from a supply voltage ranging from 3 V to 36 V. The LM61460-Q1 provides exceptional
efficiency and output accuracy in a very small solution size. The LM61460-Q1 is capable of delivering 6 A of load
current and is peak current limit controlled. The following are additional features that provide both flexible and
easy-to-use solutions for a wide range of applications:
• Adjustable switching frequency
• Synchronization to an external clock
• FPWM variant (LM61460AFS)
• Power-good flag
• Precision enable
Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load
range. The device requires few external components and has a pinout designed for optimal EMI and thermal
performance. Protection features include the following:
• Thermal shutdown
• Input undervoltage lockout
• Cycle-by-cycle current limiting
• Hiccup short-circuit protection
The LM61460-Q1 device is pin-to-pin compatible with the LM61440-Q1 for easy output current scaling.
For a quick reference, Figure 1-1 shows the pin configuration of the LM61460-Q1 and Figure 1-2 shows the
simplified schematic. See the LM61460-Q1 Automotive 3-V to 36-V, 6-A, Low-Noise Synchronous Step-Down
Converter Data Sheet for more detailed feature descriptions and design guide.
3
.5
mm
4 mm
BI
AS
C
BO
O
T
R
BO
O
T
EN
/
SYN
C
R
ESET
VI
N
1
VI
N
2
PG
N
D
1
PG
N
D
2
SW
FB
AGND
VCC
R
T
Figure 1-1. LM61460-Q1 Pin Configuration (Top
View)
LM61460-Q1
RESET
EN/SYNC
RT
PGND1
AGND
VCC
CBOOT
SW
FB
BIAS
RBOOT
3.0 V to 36 V input
VIN1
PGND2
VIN2
Figure 1-2. LM61460-Q1 Schematic
Introduction www.ti.com
4 LM61460-Q1 EVM User's Guide SNVU621D – MAY 2019 – REVISED JULY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated