0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.05

Output Current (A)

G000

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS54062

SLVSAV1D – MAY 2011 – REVISED JULY 2016

TPS54062 4.7-V to 60-V Input, 50-mA Synchronous Step-Down Converter With Low IQ

1

1 Features

1

•

Integrated High-Side and Low-Side MOSFET

•

Peak Current Mode Control

•

Diode Emulation for Improved Light-Load

Efficiency

•

89 µA (typical) Operating Quiescent Current

•

100-kHz to 400-kHz Adjustable Switching

Frequency

•

Synchronizes to External Clock

•

Internal Slow-Start

•

0.8 V ±2% Voltage Reference

•

Stable with Ceramic Output Capacitors or Low-

Cost Aluminum Electrolytic

•

Cycle-by-Cycle Current Limit, Thermal and

Frequency Foldback Protection

•

MSOP-8 and 3mm × 3mm VSON-8 Packages

2 Applications

•

Low-Power Standby or Bias Voltage Supplies

•

4-20 mA Current-Loop Powered Sensors

•

Industrial Process Control, Metering, and Security

Systems

•

High Voltage Linear Regulator Replacement

3 Description

The TPS54062 device is a 60-V, 50-mA, synchronous

step-down converter with integrated high-side and

low-side MOSFETs. Current mode control provides

simple external compensation and flexible component

selection. The non-switching supply current is 89 µA.

Using the enable pin, shutdown supply current is

reduced to 1.7 µA.

Undervoltage lockout is internally set at 4.5 V, but

can be increased using the accurate enable pin

threshold. The output voltage start-up ramp is

controlled by the internal slow-start time.

Adjustable

switching

frequency

range

allows

efficiency

and

external

component

size

to

be

optimized. Frequency foldback and thermal shutdown

protects the part during an overload condition.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS54062

MSOP (8)

3.00 mm × 3.00 mm

VSON (8)

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

SPACER

SPACER

Simplified Schematic

Efficiency