1 Introduction
1.1 LMQ61460-Q1 Synchronous Step-Down Voltage Converter
The LMQ61460-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of delivering up to 6 A
of load current from a supply voltage ranging from 3 V to 36 V. The LMQ61460-Q1 provides exceptional
efficiency and output accuracy in a very small solution size. The LMQ61460-Q1 is capable of delivering 6 A of
load current and implements peak current mode control. The following are additional features that provide both
flexible and easy-to-use solutions for a wide range of applications:
• Adjustable switching frequency (RT)
• Synchronization to an external clock (CLK jumper)
• FPWM variant (LMQ61460AFS) (IC swap)
• Power-good flag (PG jumper)
• Precision enable (EN jumper with RENT and RENB resistors)
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
shows the pin configuration of the LMQ61460-Q1.
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. LMQ61460-Q1 Pin Configuration (Top View)
Introduction
SNVU698B – SEPTEMBER 2020 – REVISED DECEMBER 2020
LMQ61460EVM-400K User's Guide
3
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