LMZ20502_15 Datasheet, PDF (1/37 Pages) Texas Instruments – LMZ20502 2 A SIMPLE SWITCHER® Nano Module

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LMZ20502
SNVS852C – JUNE 2012 – REVISED APRIL 2015
LMZ20502 2 A SIMPLE SWITCHER^® Nano Module
1 Features
•1 Integrated Inductor
• Miniature 3.5 mm x 3.5 mm x 1.75 mm Package
• 2 A Maximum Load Current
• Input Voltage Range of 2.7 V to 5.5 V
• Adjustable Output Voltage Range of 0.8 V to 3.6 V
• ± 1% Feedback Tolerance Over Temperature
• 2.4 µA (max) Quiescent Current In Shutdown
• 3 MHz Fixed PWM Switching Frequency
• -40°C to 125°C Junction Temperature Range
• Power Good Flag Function
• Pin-Selectable Switching Modes
• Internal Compensation and Soft-Start
• Current Limit, Thermal Shutdown, and UVLO
Protection
2 Applications
• Point of Load Regulation
• Space Constrained Applications
3 Description
The LMZ20502 SIMPLE SWITCHER^® Nano Module
regulator is an easy-to-use synchronous step-down
DC-DC converter capable of driving up to 2 A of load
from an input of up to 5.5 V, with exceptional
efficiency and output accuracy in a very small
solution size. The innovative package contains the
regulator and inductor in a small 3.5 mm x 3.5 mm x
1.75 mm volume, thus saving board space and
eliminating the time and expense of inductor
selection. The LMZ20502 requires only five external
components and has a pin-out designed for simple,
optimum PCB layout. The LMZ20502 is a member of
Texas Instruments' SIMPLE SWITCHER family. The
SIMPLE SWITCHER concept provides for an easy to
use complete design with a minimum number of
external components and the TI WEBENCH^® design
tool. TI's WEBENCH tool includes features such as
external component calculation, electrical simulation,
and WebTherm™. For soldering information, please
refer to the following document: SNOA401.
Device Information⁽¹⁾
PART NUMBER
PACKAGE /
DRAWING
BODY SIZE (NOM)
LMZ20502SILT USIP (8) / SIL0008F 3.50 mm x 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
VIN
CIN
EN
VOUT
VIN
LMZ20502
GND MODE
FB
PG
RFBT
CFF
RFBB
VOUT
COUT
Typical Efficiency for V_OUT = 1.8 V Auto Mode
100
95
90
85
80
75
70
65
60
55
50
45
40
0.01
0.1
1
Output Current (A)
3V
4.2V
5V
10
C001
1
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.