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LM5165-Q1 Datasheet PDF

Part Number LM5165-Q1
Description 150-mA Synchronous Buck Converter
Manufacture etcTI
Total Page 30 Pages
PDF Download Download LM5165-Q1 Datasheet PDF

Features: Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity Reference Design LM5165-Q1 SNV SAJ3B – MARCH 2016 – REVISED FEBRUA RY 2017 LM5165-Q1 3-V to 65-V Input, 15 0-mA Synchronous Buck Converter With Ul tra-Low IQ 1 Features •1 AEC-Q100 Qu alified for Automotive Applications – Device Temperature Grade 1: –40ºC t o 125ºC Ambient Temperature Range – Device HBM ESD Classification Level 2 Device CDM ESD Classification Level C5 • Wide Input Voltage Range of 3 V to 65 V • Fixed (3.3-V, 5-V) or Adjus table Output Voltages • Maximum Outpu t Current as High as 150 mA • 10.5-µ A No Load Quiescent Current • –40° C to 150°C Junction Temperature Range • Selectable PFM or COT Mode Operatio n • Active Slew Rate Control for Low EMI • Integrated 2-Ω PMOS Buck Switc h – Supports 100% Duty Cycle for Low Dropout • Integrated 1-Ω NMOS Synchr onous Rectifier – Eliminates External Rectifier Diode • Programmable Current Limit Setpoint (4 Levels) • 1.223-V Internal Voltage Reference • 900.

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LM5165-Q1 datasheet
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
LM5165-Q1
SNVSAJ3B – MARCH 2016 – REVISED FEBRUARY 2017
LM5165-Q1 3-V to 65-V Input, 150-mA Synchronous Buck Converter With Ultra-Low IQ
1 Features
1 AEC-Q100 Qualified for Automotive Applications
– Device Temperature Grade 1: –40ºC to 125ºC
Ambient Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C5
• Wide Input Voltage Range of 3 V to 65 V
• Fixed (3.3-V, 5-V) or Adjustable Output Voltages
• Maximum Output Current as High as 150 mA
• 10.5-µA No Load Quiescent Current
• –40°C to 150°C Junction Temperature Range
• Selectable PFM or COT Mode Operation
• Active Slew Rate Control for Low EMI
• Integrated 2-Ω PMOS Buck Switch
– Supports 100% Duty Cycle for Low Dropout
• Integrated 1-Ω NMOS Synchronous Rectifier
– Eliminates External Rectifier Diode
• Programmable Current Limit Setpoint (4 Levels)
• 1.223-V Internal Voltage Reference
• 900-µs Internal or Programmable Soft Start
• Monotonic Start-Up into Prebiased Output
• No Loop Compensation or Bootstrap Components
• Precision Enable and Input UVLO With Hysteresis
• Thermal Shutdown Protection With Hysteresis
• 10-Pin VSON and VSSOP Packages
• Create a Custom Regulator Design Using
WEBENCH® Power Designer
2 Applications
• Automotive and Battery-Powered Equipment
• High-Voltage LDO Replacement
• General-Purpose Bias Supplies
Typical Schematic, Fixed Output
VIN = 3V...65V
VIN
LF
68 H
VOUT = 5V *
SW
CIN
1F
LM5165X
EN VOUT
COUT
22 F
3 Description
The LM5165-Q1 device is a compact, easy-to-use, 3-
V to 65-V, ultra-low IQ synchronous buck converter
with high efficiency over wide input voltage and load
current ranges. With integrated high-side and low-
side power MOSFETs, up to 150-mA of output
current can be delivered at either fixed output
voltages of 3.3 V or 5 V or at an adjustable output.
The converter is designed to simplify implementation
while providing options to optimize the performance
for the target application. Pulse Frequency
Modulation (PFM) mode is selected for optimal light-
load efficiency or Constant On-Time (COT) control for
nearly constant operating frequency. Both control
schemes do not require loop compensation while
providing excellent line and load transient response
and short PWM on-time for large step-down
conversion ratios.
The high-side P-channel MOSFET can operate at
100% duty cycle for lowest dropout voltage and does
not require a bootstrap capacitor for gate drive. Also,
the current limit setpoint is adjustable to optimize
inductor selection for a particular output current
requirement. Selectable and adjustable start-up
timing options include minimum delay (no soft start),
internally fixed (900 µs), and externally programmable
soft start using a capacitor. An open-drain PGOOD
indicator can be used for sequencing, fault reporting,
and output voltage monitoring. The LM5165-Q1 is
qualified to automotive AEC-Q100 grade 1 and is
available in 10-pin VSON and VSSOP packages with
0.5-mm pin pitch.
PART #
LM5165-Q1
LM5165X-Q1
LM5165Y-Q1
Device Information(1)
OUTPUT PACKAGE BODY SIZE (NOM)
Adjustable
5-V fixed
3.3-V fixed
VSON (10)
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Efficiency, VOUT = 5 V
100
90
80
70
PGOOD
SS
60
HYS
ILIM
50
VIN = 8V
VIN = 12V
VIN = 24V
RT GND
* VOUT tracks VIN
if VIN < 5V
40 VIN = 36V
VIN = 65V
30
0.1 1 10 30
Output Current (mA)
D101
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.

LM5165-Q1 datasheet
LM5165-Q1
SNVSAJ3B – MARCH 2016 – REVISED FEBRUARY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 6
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 6
6.6 Switching Characteristics .......................................... 7
6.7 Typical Characteristics .............................................. 8
7 Detailed Description ............................................ 13
7.1 Overview ................................................................. 13
7.2 Functional Block Diagram ....................................... 13
7.3 Feature Description................................................. 14
7.4 Device Functional Modes........................................ 20
8 Applications and Implementation ...................... 21
8.1 Application Information............................................ 21
8.2 Typical Applications ................................................ 21
9 Power Supply Recommendations...................... 35
10 Layout................................................................... 35
10.1 Layout Guidelines ................................................. 35
10.2 Layout Example .................................................... 37
11 Device and Documentation Support ................. 38
11.1 Device Support .................................................... 38
11.2 Documentation Support ........................................ 38
11.3 Receiving Notification of Documentation Updates 39
11.4 Community Resources.......................................... 39
11.5 Trademarks ........................................................... 39
11.6 Electrostatic Discharge Caution ............................ 39
11.7 Glossary ................................................................ 39
12 Mechanical, Packaging, and Orderable
Information ........................................................... 39
4 Revision History
Changes from Revision A (March 2016) to Revision B
Page
• Added VSSOP-10 package information ................................................................................................................................. 3
• Changed EN absolute maximum voltage from (VIN + 0.3 V) to 68 V .................................................................................... 5
• Deleted note 5 under Absolute Maximum Ratings table ........................................................................................................ 5
• Changed EN operating voltage from VIN to 65 V .................................................................................................................. 6
• Deleted note 2 under Recommended Operating Conditions table......................................................................................... 6
• Added thermal information data for VSSOP-10 package....................................................................................................... 6
• Added ILIM specifications for VSSOP-10 package ................................................................................................................ 6
• Changed RT resistor equation divisor from 1.6 to 1.75 and updated Table 1 accordingly .................................................. 16
• Added link to TI Design TIDA-00666.................................................................................................................................... 21
• Added more information in the Device and Documentation Support section ...................................................................... 38
Changes from Original (February 2016) to Revision A
Page
• Product Preview to Production Data Release ....................................................................................................................... 1
2 Submit Documentation Feedback
Product Folder Links: LM5165-Q1
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