TPS22994 Datasheet, PDF (1/44 Pages) Texas Instruments – Quad Channel Load Switch with GPIO and I2C Control

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
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 (V_BIAS = 7.2 V)
– R_ON = 41 mΩ at V_IN = 3.3 V
– R_ON = 41 mΩ at V_IN = 1.8 V
– R_ON = 41 mΩ at V_IN = 1.5 V
– R_ON = 41 mΩ at V_IN = 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 R_ON 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.