TPS22961 Datasheet, PDF (1/28 Pages) Texas Instruments – 3.5-V, 6-A, Ultra-low Resistance Load Switch

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TPS22961
SLVSCI4B – FEBRUARY 2014 – REVISED SEPTEMBER 2014
TPS22961 3.5-V, 6-A, Ultra-low Resistance Load Switch
1 Features
•1 Integrated Single Channel Load Switch
• VBIAS Voltage Range: 3 V to 5.5 V
• Input Voltage Range: 0.8 V to 3.5 V
• Ultra low R_ON Resistance
– R_ON = 4.4 mΩ at V_IN = 1.05 V (V_BIAS = 5 V)
• 6A Maximum Continuous Switch Current
• Low Quiescent Current < 1 µA (max)
• Low Control Input Threshold Enables use of 1.2-
V/1.8-V/2.5-V/3.3-V Logic
• Controlled Slew Rate
– t_R = 4.2 µs at V_IN = 1.05 V (V_BIAS = 5 V)
• Quick Output Discharge (QOD)
• SON 8-terminal Package with Thermal Pad
• ESD Performance Tested per JESD 22
– 2-kV HBM and 1-kV CDM
2 Applications
• Ultrabook™/Notebooks
• Desktops
• Servers
• Set-top Boxes
• Telecom Systems
• Tablet PC
3 Description
The TPS22961 is a small, ultra-low R_ON, single
channel load switch with controlled turn on. The
device contains an N-channel MOSFET that can
operate over an input voltage range of 0.8 V to 3.5 V
and supports a maximum continuous current of 6 A.
The combination of ultra-low R_ON and high current
capability of the device makes it ideal for driving
processor rails with very tight voltage dropout
tolerances. Quick rise time of the device allows for
power rails to come up quickly when the device is
enabled, thereby reducing response time for power
distribution. The switch can be independently
controlled via the ON terminal, which is capable of
interfacing directly with low-voltage control signals
originating from microcontrollers or low voltage
discrete logic. The device further reduces the total
solution size by integrating a 260 Ω pull-down
transistor for quick output discharge (QOD) when the
switch is turned off.
The TPS22961 is available in a small, space-saving 3
mm x 3 mm 8-SON package (DNY) with integrated
thermal pad allowing for high power dissipation. The
device is characterized for operation over the free-air
temperature range of –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE
TPS22961
WSON (8)
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
VBIAS
(4.5V to 5.5V)
Power
VIN
Supply
C_IN
VOUT
Processor
(x86, FPGA,
DSP)
C_L
ON _ON
OFF
TPS22961
GND
Typical Application: driving high current
core rails for a processor
R_ON vs V_IN (V_BIAS = 5 V, I_OUT = –200 mA)
8
7
6
5
4
3
2
-40SC
1
25SC
85SC
0
0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
V_IN (V)
C007
1
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.