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See Technical Specifications

LMZ31503RUQT

4.5V to 15V, 3A Step-Down Power Module in 9x15x2.8mm QFN Package

Manufacturer:

TEXAS INSTRUMENTS INC
Mfr.Part #:

LMZ31503RUQT
Datasheet:

LMZ31503RUQT Datasheet (PDF)
Pbfree Code:

Yes
Part Life Cycle Code:

Active
Reach Compliance Code:

compliant
ECCN Code:

EAR99
EDA/CAD Models:

Request Free CAD Models for LMZ31503RUQT

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LMZ31503RUQT General Description

The LMZ31503 power module is an easy-to-use integrated power solution that combines a 3-A DC/DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as 3 external components and eliminates the loop compensation and magnetics design process.

The 9×15×2.8 mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design with up to 95% efficiency and excellent power dissipation with a thermal impedance of 13°C/W junction to ambient. The device delivers the full 3-A rated output current at 85°C ambient temperature without airflow.

The LMZ31503 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering performance DSPs and FPGAs. Advanced packaging technology afford a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

Key Features

Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
9 mm × 15mm × 2.8mm package
- Pin Compatible with LMZ31506
Efficiencies Up To 95%
Wide-Output Voltage Adjust
0.8 V to 5.5 V, with 1% Reference Accuracy
Optional Split Power Rail Allows
Input Voltage Down to 1.6 V
Adjustable Switching Frequency
(330 kHz to 780 kHz)
Synchronizes to an External Clock
Adjustable Slow-Start
Output Voltage Sequencing / Tracking
Power Good Output
Programmable Undervoltage Lockout (UVLO)
Overcurrent Protection (Hiccup-Mode)
Over Temperature Protection
Pre-bias Output Start-up
Operating Temperature Range: –40°C to +85°C
Enhanced Thermal Performance: 13°C/W
Meets EN55022 Class B Emissions
- Integrated Shielded Inductor
Create a Custom Design Using the LMZ31503 With the WEBENCH^® Power Designer

Specifications

Source Content uid	LMZ31503RUQT	Pbfree Code	Yes
Part Life Cycle Code	Active	Reach Compliance Code	compliant
ECCN Code	EAR99	HTS Code	8542.39.00.01
Additional Feature	ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 5.5V, ALSO REQUIRE 1.6 TO 14.5V INPUT	Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE	Input Voltage-Max	14.5 V
Input Voltage-Min	4.5 V	Input Voltage-Nom	12 V
JESD-30 Code	R-PXSS-N47	JESD-609 Code	e4
Length	15 mm	Moisture Sensitivity Level	3
Number of Functions	1	Number of Outputs	1
Number of Terminals	47	Operating Temperature-Max	85 °C
Operating Temperature-Min	-40 °C	Output Current-Max	3 A
Output Voltage-Max	5.5 V	Output Voltage-Min	0.8 V
Output Voltage-Nom	1.8 V	Peak Reflow Temperature (Cel)	245
Qualification Status	Not Qualified	Seated Height-Max	2.9 mm
Surface Mount	YES	Switcher Configuration	BUCK
Switching Frequency-Max	780 kHz	Temperature Grade	INDUSTRIAL
Terminal Finish	NICKEL PALLADIUM GOLD	Terminal Form	NO LEAD
Terminal Pitch	0.9 mm	Terminal Position	UNSPECIFIED
Time@Peak Reflow Temperature-Max (s)	30	Width	9 mm
Iout (max) (A)	3	Vin (min) (V)	4.5
Vin (max) (V)	14.5	Vout (min) (V)	0.8
Vout (max) (V)	5.5	Soft start	Adjustable
Features	EMI Tested, Enable, Frequency synchronization, Power good, Remote Sense, Tracking	Operating temperature range (°C)	-40 to 85
Iq (typ) (mA)	13.4	Regulated outputs (#)	1
Switching frequency (max) (kHz)	780	Switching frequency (min) (kHz)	330
Duty cycle (max) (%)	100	Topology	Buck, Synchronous Buck
Type	Module	Rating	Catalog
Control mode	current mode