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TLV62565,TLV62566
SLVSBC1B–OCTOBER2013–REVISED DECEMBER2014 TLV6256x1.5-A High Efficiency Step-Down Converters in SOT-235-Pin Package
1Features3Description
The TLV62565/6devices are synchronous step-down •  2.7-V to5.5-V Input Voltage Range
converters optimized for small solution size and high •  1.5-MHz Typical Switching Frequency efficiency.The devices integrate switches capable of
•Output Current up to1.5A(Max)delivering an output current up to1.5A.
•Adaptive On-Time Current Control The devices are based on an adaptive on time with •Power Save Mode for Light Load Efficiency valley current mode control scheme.Typical
operating frequency is1.5MHz at medium to heavy •50-µA Operating Quiescent Current
loads.The devices are optimized to achieve very low •Up to95%Efficiency
output voltage ripple even with small external •Over Current Protection components and feature an excellent load transient
response.
•95%Maximum Duty Cycle
•Excellent AC and Transient Load Response During a light load,the TLV62565/6automatically
enter into Power Save Mode at the lowest quiescent •Power Good Output,TLV62566
current(50μA typ)to maintain high efficiency over •Internal Soft Startup of250µs(Typ)
the entire load current range.In shutdown,the •Adjustable Output Voltage current consumption is reduced to less than1μA.•Thermal Shutdown Protection
The TLV62565/6provide an adjustable output voltage •Available in SOT-235-Pin Package via an external resistor divider.The output voltage
start-up ramp is controlled by an internal soft start, 2Applications typically250µs.Power sequencing is possible by
configuring the Enable(TLV62565)and Power Good •Portable Devices
(TLV62566)pins.Other features like over current •DSL Modems protection and over temperature protection are built-•Hard Disk Drivers in.The TLV62565/6devices are available in a SOT-
235-pin package.
•Set Top Box
•Tablet Device Information(1)
PART NUMBER PACKAGE BODY SIZE(NOM)
TLV62565,
SOT-23(5)  2.90mm×1.60mm
TLV62566
(1)For all available packages,see the orderable addendum at
the end of the datasheet.
4Simplified Schematic
Efficiency vs Load Current
TLV62565,TLV62566
SLVSBC1B–OCTOBER2013–REVISED DECEMBER2014www.ti
Table of Contents
10.3Feature Description (11)
1Features (1)
10.4Device Functional Modes (12)
2Applications (1)
11Application and Implementation (13)
3Description (1)
11.1Application Information (13)
4Simplified Schematic (1)
11.2Typical Application (13)
5Revision History (2)
12Power Supply Recommendations (17)
6Device Comparison Table (3)
13Layout (18)
7Pin Configuration and Functions (3)
13.1Layout Guidelines (18)
8Specifications (4)
13.2Layout Example (18)
8.1Absolute Maximum Ratings (4)
13.3Thermal Considerations (18)
8.2ESD Ratings (4)
14Device and Documentation Support (19)
8.3Recommended Operating Conditions (4)
14.1Device Support (19)
8.4Thermal Information (4)
14.2Documentation Support (19)
8.5Electrical Characteristics (5)
14.3Related Links (19)
8.6Typical Characteristics (6)
14.4Trademarks (19)
9Parameter Measurement Information (8)
14.5Electrostatic Discharge Caution (19)
10Detailed Description (9)
14.6Glossary (19)
10.1Overview (9)
15Mechanical,Packaging,and Orderable
10.2Functional 10Information.. (19)
5Revision History
NOTE:Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A(November2014)to Revision B Page •Added Storage temperature to Absolute Maximum Ratings (4)
•Changed Handling Ratings to ESD Ratings (4)
•Deleted Storage temperature from ESD Ratings (4)
tablet5
•Changed Thermal Information to Thermal Considerations and moved to Layout section (18)
Changes from Original(October2013)to Revision A Page •Changed Added Handling Rating table,Feature Description section,Device Functional Modes,Application and Implementation section,Power Supply Recommendations section,Layout section,Device and Documentation
Support section,and Mechanical,Packaging,and Orderable Information section (1)
•Added"T A=-40°C to85°C"to the V FB,Feedback regulation voltage Test Conditions (5)
•Added V FB,Feedback regulation voltage Test Conditions and values for"PWM operation,T A=85°C" (5)
2Submit Documentation Feedback Copyright©2013–2014,Texas Instruments Incorporated
1
2
3
45VIN SW
GND FB EN/PG TLV62565,TLV62566
www.ti
SLVSBC1B –OCTOBER 2013–REVISED DECEMBER 2014
6Device Comparison Table
PART NUMBER FUNCTION
TLV62566EN TLV62566
PG
7Pin Configuration and Functions
5-Pin SOT-23DBV Package (Top View)
Pin Functions
PIN
NUMBER
I/O/PWR
DESCRIPTION
NAME TLV62565
TLV62566
Device enable logic input.Logic HIGH enables the device,logic low disables the device EN 1—I and turns it into shutdown.
Feedback pin for the internal control loop.Connect this pin to the external feedback FB 55I divider.GND 22PWR Ground pin.
Power Good open drain output.This pin is high impedance if the output voltage is within PG —1O regulation.It is pulled low if the output is below its nominal value.It is also in logic low when V IN below UVLO or thermal shutdown triggers.
Switch pin connected to the internal MOSFET switches and inductor terminal.Connect SW 33PWR the inductor of the output filter to this pin.VIN
4
4
PWR
Power supply voltage input.
Copyright ©2013–2014,Texas Instruments Incorporated Submit Documentation Feedback 3
TLV62565,TLV62566
SLVSBC1B–OCTOBER2013–REVISED DECEMBER2014www.ti 8Specifications
8.1Absolute Maximum Ratings
Over operating free-air temperature range(unless otherwise noted)(1)
MIN MAX UNIT
VIN,EN,PG–0.37V Voltage(2)SW–0.3V IN+0.3V
FB–0.3  3.6V Sink current,I PG PG660µA Continuous total power dissipation See Thermal Information
Operating junction temperature,T J–40150°C Storage temperature,T stg–65150°C (1)Stresses beyond
those listed under absolute maximum ratings may cause permanent damage to the device.These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2)All voltage values are with respect to network ground terminal.
8.2ESD Ratings
VALUE UNIT Human-body model(HBM),per ANSI/ESDA/JEDEC JS-001(1)±2000V Electrostatic
V(ESD)
discharge Charged-device model(CDM),per JEDEC specification JESD22-C101(2)±500V
(1)JEDEC document JEP155states that500-V HBM allows safe manufacturing with a standard ESD control process.
(2)JEDEC document JEP157states that250-V CDM allows safe manufacturing with a standard ESD control process.
8.3Recommended Operating Conditions(1)
MIN TYP MAX UNIT V IN Input voltage,VIN  2.7  5.5V
T A Operating ambient temperature–4085°C (1)Refer to the Application and Implementation section for further information.
8.4Thermal Information
TLV62565,TLV62566
THERMAL METRIC(1)UNIT
DBV(5Pins)
RθJA Junction-to-ambient thermal resistance208.3
RθJC(top)Junction-to-case(top)thermal resistance73.7
RθJB Junction-to-board thermal resistance36.1
°C/W
ψJT Junction-to-top characterization parameter  2.3
ψJB Junction-to-board characterization parameter35.3
RθJC(bot)Junction-to-case(bottom)thermal resistance N/A
(1)For more information about traditional and new thermal metrics,see the IC Package Thermal Metrics application report,SPRA953.
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TLV62565,TLV62566 www.ti SLVSBC1B–OCTOBER2013–REVISED DECEMBER2014
8.5Electrical Characteristics
Over recommended free-air temperature range,V IN=3.6V,T A=-40°C to85°C,typical values are at T A=25°C(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY
V IN Input voltage  2.7  5.5V
I Q Quiescent current into VIN pin I OUT=0mA,Not switching50uA
Under voltage lock out V IN falling  2.2  2.3V
V UVLO
Under voltage lock out hysteresis200mV
Thermal shutdown Junction temperature rising150
T JSD°C Thermal shutdown hysteresis Junction temperature falling below T JSD20
LOGIC INTERFACE,TLV62565
V IH High-level input voltage  2.7V≤V IN≤5.5V  1.2V
V IL Low-level input voltage  2.7V≤V IN≤5.5V0.4V
I SD Shutdown current into VIN pin EN=LOW0.11µA
I EN,LKG EN leakage current0.010.16µA POWER GOOD,TLV62566
Power Good low threshold V FB falling referenced to V FB nominal90%
V PG
Power Good high threshold V FB risng referenced to V FB nominal95%
V L Low level voltage I sink=500µA0.4V
I PG,LKG PG Leakage current V PG=5.0V0.010.17µA OUTPUT
V OUT Output voltage0.6D MAX.V IN V
PWM operation,T A=-40°C to85°C0.5880.60.612V
V FB Feedback regulation voltage PWM operation,T A=85°C0.5940.60.606V
PFM comparator threshold0.9%
I FB Feedback input bias current V FB=0.6V10100nA
High-side FET on resistance I SW=500mA,V IN=3.6V173
R DS(on)mΩLow-side FET on resistance I SW=500mA,V IN=3.6V105
I LIM,LS Low-side FET valley current limit  1.5A
I LIM,HS High-side FET peak current limit  1.8A
f SW Switchin
g frequency  1.5MHz
D MAX Maximum duty cycle95%
t OFF,MIN Minimum off time40ns Copyright©2013–2014,Texas Instruments Incorporated Submit Documentation Feedback5

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