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TPS62081

1µH

10µF

2.3V .. 6V

22µF

180k

OUT

POWER GOOD

1.8V

VOS

VIN

GND

MODE

TPS62080, TPS62080A

TPS62081, TPS62082

www.ti.com

SLVSAE8D –SEPTEMBER 2011–REVISED JULY 2013

1.2A High Efficient Step Down Converter with Snooze Mode

Check for Samples: TPS62080, TPS62080A, TPS62081, TPS62082

FEATURES

DESCRIPTION

The TPS6208x devices are a family of high frequency

• DCS-Control

Architecture for Fast Transient

synchronous step down converters. With an input

Regulation

voltage range of 2.3V to 6.0V, common battery

• Snooze Mode for 6.5µA Ultra Low Quiescent

technologies are supported. Alternatively, the device

Current

can be used for low voltage system power rails.

• 2.3V to 6.0V Input Voltage Range

The TPS6208x focuses on high efficient step down

• Supports High Output Capacitance up to

conversion over a wide output current range. At

100µF

medium to heavy loads, the converter operates in

PWM mode and automatically enters Power Save

• 100% Duty Cycle for Lowest Dropout

Mode operation at light load currents to maintain high

• Power Save Mode for Light Load Efficiency

efficiency over the entire load current range. To

• Output Discharge Function

maintain high efficiency at very low load or no load

currents, a Snooze Mode with an ultra low quiescent

• Short Circuit Protection

current is implemented, that is enabled by the Mode

• Power Good Output

pin. This function increases the run-time of battery

• Thermal Shutdown

driven applications and keeps the standby current at

its lowest level to meet green energy standards

• Available in 2x2mm 8-Pin SON Package

targeting for a low stand-by current.

APPLICATIONS

To address the requirements of system power rails,

the internal compensation circuit allows a large

• Battery Powered Portable Devices

selection of external output capacitor values ranging

• Point of Load Regulators

from 10µF up to 100uF effective capacitance. With its

• System Power Rail Voltage Conversion

DCS-Control

architecture excellent load transient

performance and output voltage regulation accuracy

is achieved. The device is available in 2x2mm SON

package with Thermal PAD.

Figure 1. Typical Application of TPS62081 (1.8V Fixed Output)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (27 pages)

PAGE 1
TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 1.2A High Efficient Step Down Converter with Snooze Mode Check for Samples: TPS62080, TPS62080A, TPS62081, TPS62082 FEATURES DESCRIPTION 1 • • • • • • • • • • • The TPS6208x devices are a family of high frequency synchronous step down converters. With an input voltage range of 2.3V to 6.0V, common battery technologies are supported. Alternatively, the device can be used for low voltage system power rails.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com Table 1. ORDERING INFORMATION TA OUTPUT VOLTAGE (1) PACKAGE MARKING PACKAGE PART NUMBER (2) Adjustable QVR 8-Pin SON TPS62080DSG 1.8 V QVS 8-Pin SON TPS62081DSG 3.3 V QVT 8-Pin SON TPS62082DSG Adjustable SBN 8-Pin SON TPS62080ADSG –40°C to 85°C (1) (2) Contact the factory to check availability of other fixed output voltage versions.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 ELECTRICAL CHARACTERISTICS Over recommended free-air temperature range, TA = -40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted), VIN=3.6V, MODE = LOW. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input voltage range 2.3 6.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com DEVICE INFORMATION 2 MODE 3 FB 4 MA GND ER 1 TH EN LP AD QFN 8 PIN 2X2 mm 8 VIN 7 SW 6 PG 5 VOS PIN FUNCTIONS PIN NAME NO. I/O DESCRIPTION VIN 8 PWR EN 1 IN Device Enable Logic Input. Logic HIGH enables the device, logic LOW disables the device and turns it into shutdown. MODE 3 IN Snooze Mode Enable Logic Input.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 FUNCTIONAL BLOCK DIAGRAMS MODE PG Control Logic Thermal Shutdown VIN High Side N-MOS Power Good Gate Driver Low Side N-MOS SW Active Output Discharge Snooze Mode GND EN ramp Softstart comparator direct control & compensation Under Voltage Shutdown VOS FB error amplifier minimum on-timer DSC-CONTROL REF TM Figure 2.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com PARAMETER MEASUREMENT INFORMATION TPS6208x VIN POWER GOOD VIN PG EN SW R3 L1 C3 C1 MODE VOUT C2 VOS R1 GND FB R2 Table 2. List of Components REFERENCE 6 DESCRIPTION MANUFACTURER C1 10uF, Ceramic Capacitor, 6.3V, X5R, size 0603 Std C2 22uF, Ceramic Capacitor, 6.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 TYPICAL CHARACTERISTICS Table 3. TABLE OF GRAPHS Figure TPS62080, Load Current, VOUT = 0.9V Figure 4 TPS62080, Load Current, VOUT = 1.2V Figure 5 TPS62080, Load Current, VOUT = 2.5V Figure 6 TPS62081, Load Current, VOUT = 1.8V Figure 7 TPS62082, Load Current, VOUT = 3.3V Figure 8 TPS62080, Input Voltage, VOUT = 0.9V Figure 9 TPS62080, Input Voltage, VOUT = 2.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com EFFICIENCY vs LOAD CURRENT EFFICIENCY vs LOAD CURRENT 100 100 TPS62080 VOUT = 2.5 V 90 80 80 70 70 Efficiency (%) Efficiency (%) 90 60 50 VIN = 3.6 V VIN = 4.2 V VIN = 5.0 V VIN = 3.6 V, Snooze Mode VIN = 4.2 V, Snooze Mode VIN = 5.0 V, Snooze Mode 40 30 20 10 0 10u 100u 1m 10m 100m Output Current (A) 1 TPS62081 VOUT = 1.8 V 60 50 VIN = 2.8 V VIN = 3.6 V VIN = 4.2 V VIN = 2.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 OUTPUT VOLTAGE vs INPUT VOLTAGE OUTPUT VOLTAGE vs LOAD CURRENT 3.36 3.34 0.910 TPS62082 VOUT = 3.3 V 0.908 0.906 Output Voltage (V) Output Voltage (V) 3.32 3.30 3.28 3.26 IOUT = 1A, TA = 25°C IOUT = 1A, TA = −40°C IOUT = 1A, TA = 85°C IOUT = 10mA, TA = 25°C IOUT = 10mA, TA = −40°C IOUT = 10mA, TA = 85°C 3.24 3.22 3.20 3.18 3.3 3.8 4.3 4.8 Input Voltage (V) 5.3 0.904 0.902 0.900 0.898 0.896 0.892 0.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com QUIESCENT CURRENT vs INPUT VOLTAGE HIGH SIDE FET RDS(on) vs INPUT VOLTAGE 9.5u 250 FET On−Resistance (mΩ) Quiescent Current (A) IOUT = 0 A, Snooze Mode 8u 6.5u 5u TA = 25°C TA = −40°C TA = 85°C 3.5u 2u 2.3 2.8 3.3 3.8 4.3 4.8 Input Voltage (V) 5.3 210 170 130 90 50 2.3 5.8 2.8 3.3 G017 3.8 4.3 4.8 Input Voltage (V) 5.3 5.8 G018 Figure 18. Figure 19.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 TYPICAL APPLICATION (PFM MODE) TYPICAL APPLICATION (SNOOZE MODE) SW 2V/div SW 2V/div VOUT 20mV/div VOUT 50mV/div L COIL 0.2A/div L COIL 0.2A/div t - 2µs/div t - 50µs/div Figure 24. Figure 25. LOAD TRANSIENT LINE TRANSIENT 1A LOAD 1A/div 4.2V VIN 1V/div 50mA 3.3V VOUT 20mV/div VOUT 50mV/div L COIL 1A/div t - 50µs/div Figure 26.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com START UP START UP (WITHOUT LOAD) EN 5V/div EN 5V/div PG 1V/div PG 1V/div VOUT 1V/div VOUT 1V/div L COIL 0.5A/div L COIL 0.2A/div t - 20µs/div t - 20µs/div Figure 28. Figure 29. SHUT DOWN EN 5V/div VOUT 0.5V/div t - 20ms/div Figure 30.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 DETAILED DESCRIPTION DEVICE OPERATION The TPS6208x synchronous switched mode converters are based on DCS™ Control (Direct Control with Seamless transition into Power Save Mode). This is an advanced regulation topology that combines the advantages of hysteretic and voltage mode control.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com RDS(on) = High side FET on-resistance RL = Inductor ohmic resistance ENABLING / DISABLING THE DEVICE The device is enabled by setting the EN input to a logic HIGH. Accordingly, a logic LOW disables the device. If the device is enabled, the internal power stage will start switching and regulate the output voltage to the programmed threshold.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 APPLICATION INFORMATION Output Filter Design The inductor and the output capacitor together provide a low pass frequency filter. To simplify this process Table 4 outlines possible inductor and capacitor value combinations for the most application. Table 4. Matrix of Output Capacitor / Inductor Combinations COUT [µF] (1) L [µH] (1) 10 22 47 100 1 + + (2) (3) + + 2.2 + + + + 150 0.47 4.
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TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com The architecture of the TPS6208X allows to use tiny ceramic-type output capacitors with low equivalent series resistance (ESR). These capacitors provide low output voltage ripple and are recommended. To keep its resistance up to high frequencies and to get narrow capacitance variation with temperature, it's recommended to use X7R or X5R dielectric.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 L V IN CIN V OUT 1 COUT GND R1 R2 Figure 32. PCB Layout Suggestion THERMAL INFORMATION Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires special attention to power dissipation.
PAGE 18
TPS62080, TPS62080A TPS62081, TPS62082 SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 www.ti.com TPS62080 VIN POWER GOOD 2.3V .. 6V VIN PG EN SW 180k 1mH 10µF MODE 1.2V VOUT 22µF VOS 65.3k GND FB 39.2k Figure 34. 1.2V Output Voltage Application (TPS62080) TPS62080 VIN POWER GOOD 3.0V .. 6V VIN 180k PG 1mH 10µF EN MODE 2.5V SW VOUT 22µF VOS 178.6k GND FB 39.2k Figure 35. 2.
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TPS62080, TPS62080A TPS62081, TPS62082 www.ti.com SLVSAE8D – SEPTEMBER 2011 – REVISED JULY 2013 REVISION HISTORY Changes from Original (September 2011) to Revision A Page • Added TPS62080A device .................................................................................................................................................... 1 • Added TPS62080ADSG (Product Preview) and TPS62080ADGN (Product Preview) to ORDERING INFORMATION ...... 2 • Added TPS62080A output discharge resistor .....
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 10-Jul-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Jun-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS62080ADSGR WSON DSG 8 TPS62080ADSGT WSON DSG TPS62080DSGR WSON DSG TPS62080DSGT WSON TPS62081DSGR SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 8 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 8 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Jun-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62080ADSGR WSON DSG 8 3000 195.0 200.0 45.0 TPS62080ADSGT WSON DSG 8 250 195.0 200.0 45.0 TPS62080DSGR WSON DSG 8 3000 195.0 200.0 45.0 TPS62080DSGT WSON DSG 8 250 195.0 200.0 45.0 TPS62081DSGR WSON DSG 8 3000 195.0 200.0 45.0 TPS62081DSGT WSON DSG 8 250 195.0 200.0 45.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.