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TPS22980

www.ti.com

SLVSB61C –DECEMBER 2011–REVISED SEPTEMBER 2013

3.3V TO 18V MUX with Overcurrent Limit

Check for Samples: TPS22980

FEATURES

APPLICATIONS

• Powered From 3.3V • Notebook Computers

• 4.5V to 19.8V High Voltage Switch • Desktop Computers

• 3V to 3.6V Switch • Power Management Systems

• Adjustable Current Limit

• Thermal Shutdown

• Make Before Break Switch

• High Voltage Discharge Before Low Voltage

Make

• Reverse Current Blocking

DESCRIPTION

The TPS22980 is a current-limited power mux providing a connection to a peripheral device from either a low

voltage supply (3.0V up to 3.6V) or a high voltage supply (5V up to 18V). The desired output is selected by digital

control signals.

The high voltage (VHV) and low voltage (V3P3) switch current limits are set with external resistance. Once the

current limit is reached, the TPS22980 will control the switch to maintain the current at the limit.

When the high voltage supply is not present, the TPS22980 will maintain the connection to the output from the

low voltage supply. When a high voltage line and high voltage enable signal is detected by the device, the high

voltage switch will be turned on in conjunction with the low voltage switch until a reverse current is detected by

the low voltage switch. The low voltage switch is then disabled allowing a seamless transition from a low voltage

to a high voltage supply with minimal drop and shoot-through current.

To prevent current backflow during a transition from a VHV connection to a V3P3 connection, the TPS22980 will

break the VHV connection and discharge the output to approximately 3.3V. Once the output reaches 3.3V the

device will connect V3P3 switch. If a load is present, the output will transition to 0V before returning to 3.3V.

The TPS22980 is available in a 4mm x 4mm x 1mm QFN package.

Figure 1. Typical Application

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 (18 pages)

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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 3.3V TO 18V MUX with Overcurrent Limit Check for Samples: TPS22980 FEATURES APPLICATIONS • • • • • • • • • • 1 • Powered From 3.3V 4.5V to 19.8V High Voltage Switch 3V to 3.
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TPS22980 SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) (2) VALUE (3) –0.3 to 3.6 Input voltage range on EN, HVEN, ISET_V3P3, ISET_S0, ISET_S3, S0 (3) –0.3 to V3P3+0.3 Input voltage range on V3P3 (VDD) VI Input voltage range on VHV (3) –0.3 to 20 Output voltage range at OUT (3) –0.3 to 20 UNIT V Output voltage range at V3P3OUT (3) –0.3 to V3P3+0.
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TPS22980 SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com RECOMMENDED OPERATING CONDITIONS V3P3 Supply voltage range VHV MIN MAX 3.0 3.6 UNIT 4.5 19.8 V 0 500 mA V ILIM3P3OUT V3P3OUT Switch current range VIH Input logic high EN, HV_EN, S0 V3P3-0.6 V3P3 VIL Input logic low EN, HV_EN, S0 0 0.6 V RSET_V3P3 3.3V switch current limit set resistance 25.3 402 kΩ RSET_S0 VHV switch current limit in S0 mode set resistance 25.
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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise noted the specification applies over the VDD range and operating junction temp –40°C ≤ TJ ≤ 85°C. Typical values are for V3P3 = 3.3V, VHV = 15V, and TJ = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX RSET_S0, 3 = 402 kΩ 100 110 150 RSET_S0, 3 = 80.6 kΩ 495 525 555 RSET_S0, 3 = 26.
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TPS22980 SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com APPLICATION INFORMATION CURRENT LIMIT The TPS22980 provides current limiting in the power switches. Both the VHV supply current limit and the V3P3 supply current limit are adjustable by external resistors. Figure 2 shows a simplified view of the TPS22980 current limit function. Both the VHV supply current limit and the V3P3 supply current limit are adjustable by external resistors. VHV 4.
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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 60% 1800 1600 50% % - variance from min - A ILIMHV/V3P3 - A 1400 1200 1000 800 min typ max 600 400 40% 30% min typ max 20% 10% 200 0 0% 0 50 100 150 200 250 300 RISET_S0/S3/V3P3 - W 350 400 Figure 4. ILIM vs RSET for VHV and V3P3 450 0 50 100 150 200 250 300 RISET_S0/S3/V3P3 - W 350 400 450 Figure 5.
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TPS22980 SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com Figure 6. Allowable Voltage Transitions Figure 7. Voltage Drop During Transitions from VHV DIGITAL CONTROL SIGNALS The voltage at OUT is controlled by two digital logic input signals, EN and HV_EN. HV_EN controls the state of the VHV switch and EN controls the state of V3P3 switch. Table 1 lists the possible output states given the conditions of the digital logic signals. State PD indicates a pulldown resistance of ROUTDIS to GND.
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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 Figure 8 shows possible combinations of EN and HV_EN controlling OUT of the TPS22980. EN HV_EN HV_UVLO HV_EN & HV_UVLO S3P3 SHV 18 V OUT 3.3 V 3.3 V 0V IDIS Figure 8.
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TPS22980 SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com Reverse Current Protection Reverse current protection for the V3P3 supply to OUT triggers at IREV3P3 causing the V3P3 supply switch to open. When the HV_EN signal is not asserted and reverse current protection is triggered, a discharge current source is turned on to bring the output voltage to 3.3V nominal. Thermal Shutdown The device enters thermal shutdown when junction temperature reaches TSD.
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TPS22980 www.ti.com SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013 REVISION HISTORY Changes from Original (December 2011) to Revision A Page • Changed Typical Application figure. ..................................................................................................................................... 1 • Added bottom view pin out information. ...............................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 PACKAGING INFORMATION Orderable Device Status (1) TPS22980RGPR ACTIVE Package Type Package Pins Package Drawing Qty QFN RGP 20 3000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Device Marking (3) CU NIPDAU Level-2-260C-1 YEAR (4/5) -40 to 85 PS22980 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPS22980RGPR Package Package Pins Type Drawing QFN RGP 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 3000 330.0 12.4 Pack Materials-Page 1 4.25 B0 (mm) K0 (mm) P1 (mm) 4.25 1.15 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS22980RGPR QFN RGP 20 3000 367.0 367.0 35.
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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.