Switch. TPS22994 Datasheet

TPS22994 Datasheet PDF


Part

TPS22994

Description

Quad Channel Load Switch

Manufacture

etcTI

Page 30 Pages
Datasheet
Download TPS22994 Datasheet


TPS22994 Datasheet
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TPS22994
SLVSCL4B – AUGUST 2014 – REVISED SEPTEMBER 2014
TPS22994 Quad Channel Load Switch with GPIO and I2C Control
1 Features
1 Input Voltage: 1.0 V to 3.6 V
• Low ON-State Resistance (VBIAS = 7.2 V)
– RON = 41 mat VIN = 3.3 V
– RON = 41 mat VIN = 1.8 V
– RON = 41 mat VIN = 1.5 V
– RON = 41 mat VIN = 1.0 V
• VBIAS voltage range: 2.7 V to 17.2 V
– Suitable for 1S/2S/3S/4S Li-ion Battery
Topologies
• 1-A Max Continuous Current Per Channel
• Quiescent Current
– Single Channel < 12 µA
– All Four Channels < 22 µA
• Shutdown Current (All Four Channels) < 7 µA
• Four 1.2-V Compatible GPIO Control Inputs
• I2C Configuration (Per Channel)
– On/Off Control
– Programmable Slew Rate Control (5 options)
– Programmable ON-delay (4 options)
– Programmable Output Discharge (4 options)
• I2C SwitchALL™ Command for Multi-
channel/Multi-chip Control
• QFN-20 package, 3 mm x 3 mm, 0.75 mm height
2 Applications
• Ultrathin PC
• Notebook PC
• Tablets
• Servers
• All-In-One PC
3 Description
The TPS22994 is a multi-channel, low RON load
switch with user programmable features. The device
contains four N-channel MOSFETs that can operate
over an input voltage range of 1.0 V to 3.6 V. The
switch can be controlled by I2C making it ideal for
usage with processors that have limited GPIO
available. The rise time of the TPS22994 device is
internally controlled in order to avoid inrush current.
The TPS22994 has five programmable slew rate
options, four ON-delay options, and four quick output
discharge (QOD) resistance options.
The channels of the device can be controlled via
either GPIO or I2C. The default mode of operation is
GPIO control through the ONx terminals. The I2C
slave address terminals can be tied high or low to
assign seven unique device addresses.
The TPS22994 is available in a space-saving RUK
package (0.4-mm pitch) and is characterized for
operation over the free-air temperature range of
–40°C to 85°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS22994
WQFN (20)
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
PMIC or
PMU
1
VIN1
ON1
VBIAS
(2.7 V to 17.2 V)
VOUT1
VIN2
ON2
VIN3
ON3
TPS22994
VOUT2
VOUT3
VIN4
ON4
SDA SCL
VOUT4
ADD1
ADD2
ADD3
VDD
µC (1.62 to 3.6)
CL RL
CL RL
CL RL
CL RL
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.

TPS22994 Datasheet
TPS22994
SLVSCL4B – AUGUST 2014 – REVISED SEPTEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Device Comparison Table..................................... 3
7 Pin Configuration and Functions ......................... 4
8 Specifications......................................................... 5
8.1 Recommended Operating Conditions....................... 5
8.2 Absolute Maximum Ratings ..................................... 5
8.3 Handling Ratings....................................................... 5
8.4 Thermal Information .................................................. 6
8.5 Electrical Characteristics........................................... 6
8.6 Switching Characteristics, VBIAS = 7.2 V................... 9
8.7 Switching Characteristics, VBIAS = 3.3 V .................. 9
8.8 Typical Characteristics ............................................ 11
9 Detailed Description ............................................ 18
9.1 Overview ................................................................. 18
9.2 Functional Block Diagram ....................................... 18
9.3 Feature Description................................................. 19
9.4 Device Functional Modes........................................ 24
9.5 Register Map........................................................... 25
10 Applications and Implementation...................... 27
10.1 Application Information.......................................... 27
10.2 Typical Application ................................................ 30
11 Layout................................................................... 35
11.1 Board Layout......................................................... 35
12 Device and Documentation Support ................. 36
12.1 Trademarks ........................................................... 36
12.2 Electrostatic Discharge Caution ............................ 36
12.3 Glossary ................................................................ 36
13 Mechanical, Packaging, and Orderable
Information ........................................................... 36
5 Revision History
Changes from Revision A (September 2014) to Revision B
Page
• Updated MAX limits in the Electrical Characteristics table. ................................................................................................... 6
• Updated Detailed Design Procedure for Parallel Channels Application. ............................................................................. 30
Changes from Original (August 2014) to Revision A
Page
• Inital release of full version datasheet. .................................................................................................................................. 1
2 Submit Documentation Feedback
Product Folder Links: TPS22994
Copyright © 2014, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS22994 SLVSCL4B – AUGUST 2014 – REVISED SEPTEMBER 2014 TPS229 94 Quad Channel Load Switch with GPIO a nd I2C Control 1 Features •1 Input V oltage: 1.0 V to 3.6 V • Low ON-State Resistance (VBIAS = 7.2 V) – RON = 4 1 mΩ at VIN = 3.3 V – RON = 41 mΩ at VIN = 1.8 V – RON = 41 mΩ at VI N = 1.5 V – RON = 41 mΩ at VIN = 1. 0 V • VBIAS voltage range: 2.7 V to 1 7.2 V – Suitable for 1S/2S/3S/4S Li-i on Battery Topologies • 1-A Max Conti nuous Current Per Channel • Quiescent Current – Single Channel < 12 µA All Four Channels < 22 µA • Shutdo wn Current (All Four Channels) < 7 µA • Four 1.2-V Compatible GPIO Control Inputs • I2C Configuration (Per Chann el) – On/Off Control – Programmable Slew Rate Control (5 options) – Prog rammable ON-delay (4 options) – Progr ammable Output Discharge (4 options) I2C SwitchALL™ Command for Multichannel/Multi-chip Control • QFN-20 package, 3 mm x 3 mm, 0.75 mm height 2 Applicat.
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