MUX. TPS22980 Datasheet

TPS22980 Datasheet PDF


Part

TPS22980

Description

3.3V TO 18V MUX

Manufacture

etcTI

Page 18 Pages
Datasheet
Download TPS22980 Datasheet


TPS22980 Datasheet
www.ti.com
TPS22980
SLVSB61C – DECEMBER 2011 – REVISED SEPTEMBER 2013
3.3V TO 18V MUX with Overcurrent Limit
Check for Samples: TPS22980
FEATURES
1
• Powered From 3.3V
• 4.5V to 19.8V High Voltage Switch
• 3V to 3.6V Switch
• Adjustable Current Limit
• Thermal Shutdown
• Make Before Break Switch
• High Voltage Discharge Before Low Voltage
Make
• Reverse Current Blocking
APPLICATIONS
• Notebook Computers
• Desktop Computers
• Power Management Systems
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.
RSVD
Figure 1. Typical Application
1
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.
Copyright © 2011–2013, Texas Instruments Incorporated

TPS22980 Datasheet
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.
TOP VIEW / FOOTPRINT
BOTTOM VIEW
15 14 13 12 11
RSVD 16
S0 17
V3P3OUT 18
V3P3 19
V3P3 20
Exposed
Pad
(Connect to GND)
10 ISET_S0
9 ISET_S3
8 ISET_V3P3
7 VHV
6 VHV
1 23 45
1 23 45
V3P3 20
V3P3 19
V3P3OUT 18
S0 17
RSVD 16
Exposed
Pad
(Connect to GND)
6 VHV
7 VHV
8 ISET_V3P3
9 ISET_S3
10 ISET_S0
15 14 13 12 11
Package Size: 4mm x 4mm x 1mm height, Pad Pitch: 0.5mm
PIN
NO. NAME
1
2
GND
3
4
5 EN
6
VHV
7
8 ISET_V3P3
9 ISET_S3
10
11
12, 14
13
15
16
17
18
19
20
EP
ISET_S0
HV_EN
OUT
GND
RSVD
S0
V3P3OUT
V3P3
GND
PIN FUNCTIONS
DESCRIPTION
Device ground
Device Enable.
High voltage power supply input. Place a minimum of 0.1µF capacitor as close to this pin as possible.
Sets the current limit for V3P3. Place resistor between this pin and GND. See Equation 1 to calculate resistor
value.
Sets the current limit for VHV in S3 mode. Place resistor between this pin and GND. See Equation 1 to
calculate resistor value.
Sets the current limit for VHV in S0 mode. Place resistor between this pin and GND. See Equation 1 to
calculate resistor value.
High voltage output enable.
Power output. Place a minimum of 1µF capacitor as close to this pin as possible.
Device ground.
Reserved. Must Tie to GND.
When this pin is asserted, the device is put in S0 mode. Otherwise the device operates in S3 mode.
3.3V bypass output. Place a minimum of 0.1µF capacitor as close to this pin as possible.
3.3V power supply input. Place a minimum of 0.1µF capacitor as close to this pin as possible.
2 Submit Documentation Feedback
Product Folder Links :TPS22980
Copyright © 2011–2013, Texas Instruments Incorporated


Features Datasheet pdf www.ti.com TPS22980 SLVSB61C – DECEMB ER 2011 – REVISED SEPTEMBER 2013 3.3 V TO 18V MUX with Overcurrent Limit Che ck for Samples: TPS22980 FEATURES 1 Powered From 3.3V • 4.5V to 19.8V H igh Voltage Switch • 3V to 3.6V Switc h • Adjustable Current Limit • Ther mal Shutdown • Make Before Break Swit ch • High Voltage Discharge Before Lo w Voltage Make • Reverse Current Bloc king APPLICATIONS • Notebook Compute rs • Desktop Computers • Power Mana gement Systems DESCRIPTION The TPS2298 0 is a current-limited power mux provid ing 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 se lected by digital control signals. The high voltage (VHV) and low voltage (V3P 3) switch current limits are set with e xternal resistance. Once the current li mit is reached, the TPS22980 will contr ol the switch to maintain the current a t the limit. When the high voltage supply is not present, the TPS22980 will maintain the .
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