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TPS22920, TPS22920L
SLVSAY8D – JUNE 2011 – REVISED JANUARY 2016
TPS22920x 3.6-V, 4-A, 5.3-mΩ On-Resistance, Integrated Load Switch with Controlled
Turn-on
1 Features
3 Description
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The TPS22920x is a small, space-saving load switch
with controlled turn on to reduce inrush current. The
device contains a N-channel MOSFET that can
operate over an input voltage range of 0.75 V to 3.6
V and switch currents up to 4 A. An integrated charge
pump biases the NMOS switch in order to achieve a
minimum switch ON resistance (rON). The switch is
controlled by an on/off input (ON), which is capable of
interfacing directly with low-voltage control signals.
1
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Input Voltage Range: 0.75 V to 3.6 V
Integrated Load Switch
Integrated Pass-FET rDSON = 2 mΩ (Typ) at 3.6 V
Typical ON-Resistance
– rON = 5.3 mΩ at VIN = 3.6 V
– rON = 5.4 mΩ at VIN = 2.5 V
– rON = 5.5 mΩ at VIN = 1.8 V
– rON = 5.8 mΩ at VIN = 1.2 V
– rON = 6.1 mΩ at VIN = 1.05 V
– rON = 7.3 mΩ at VIN = 0.75 V
CSP-8 Package 0.9 mm × 1.9 mm, 0.5 mm Pitch
4-A Maximum Continuous Switch Current
Shutdown Current 5.5-µA Max
ON-Logic Available in Both Active High/Low:
– TPS22920 is Active High
– TPS22920L is Active Low
Low Threshold Control Input
Controlled Slew-Rate to Avoid Inrush Current
Quick Output Discharge Resistor
ESD Performance Tested Per JESD 22
– 4000-V Human-Body Model
(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
The TPS22920x has a 1250-Ω on-chip resistor for
quick output discharge when the switch is turned off
which insures that the output is not left floating.
The TPS22920x has an internally controlled rise time
in order to reduce inrush current.
The TPS22920x is available in an ultra-small, spacesaving 8-pin CSP package and is characterized for
operation over the free-air temperature range of
–40°C to 85°C.
Device Information(1)
PART NUMBER
TPS22920x
PACKAGE
BODY SIZE (NOM)
DSBGA (8)
1.90 mm x 0.90 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
2 Applications
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Notebook / Netbook Computer
Tablet PC
PDAs / Smartphones
GPS Navigation Devices
MP3 Players
Typical Application
VIN
SMPS
CIN
VOUT
ON ON
CL
RL
OFF
TPS22920
GND
GND
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.
TPS22920, TPS22920L
SLVSAY8D – JUNE 2011 – REVISED JANUARY 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
8
1
1
1
2
3
3
4
Absolute Maximum Ratings ..................................... 4
ESD Ratings.............................................................. 4
Recommended Operating Conditions....................... 4
Thermal Information .................................................. 4
Electrical Characteristics........................................... 5
Switching Characteristics: VIN = 3.6 V ...................... 5
Switching Characteristics: VIN = 0.9 V ...................... 5
Typical DC Characteristics........................................ 6
TPS22920 Typical AC Characteristics...................... 7
TPS22920L Typical AC Characteristics................ 10
Parametric Measurement Information ............... 13
9
Detailed Description ............................................ 15
9.1
9.2
9.3
9.4
Overview .................................................................
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
15
15
15
15
10 Application and Implementation........................ 16
10.1 Application Information.......................................... 16
10.2 Typical Application ............................................... 16
11 Power Supply Recommendations ..................... 19
12 Layout................................................................... 19
12.1 Layout Guidelines ................................................. 19
12.2 Layout Example .................................................... 19
13 Device and Documentation Support ................. 20
13.1
13.2
13.3
13.4
Related Links ........................................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
20
20
20
20
14 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
Changes from Revision C (April 2015) to Revision D
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Page
Added Information about backside coating to Device Comparison table .............................................................................. 3
Changes from Revision November 2014 (B) to Revision C
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Added TPS22920L to the datasheet. ..................................................................................................................................... 1
Changes from Revision A (July 2013) to Revision B
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Page
Added Pin Configuration and Functions section, Handling Rating table, Feature Description section, Device
Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout
section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information
section ................................................................................................................................................................................... 1
Changes from Original (June 2011) to Revision A
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2
Page
Updated swapped image issue. ............................................................................................................................................. 7
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
Product Folder Links: TPS22920 TPS22920L
TPS22920, TPS22920L
www.ti.com
SLVSAY8D – JUNE 2011 – REVISED JANUARY 2016
5 Device Comparison Table
(1)
(2)
ORDERABLE PART
NUMBER
RON (TYP)
AT 3.6 V
RISE TIME
(TYP) at 3.6V
QUICK OUTPUT
DISCHARGE (1)
BACKSIDE
COATING (2)
ENABLE
TPS22920YZPR
5.3 mΩ
880 µS
Yes
No
Active High
TPS22920YZPRB
5.3 mΩ
880 µS
Yes
Yes
Active High
TPS22920LYZPR
5.3 mΩ
627 µS
Yes
Yes
Active Low
This feature discharges the output of the switch to ground through a 1250-Ω resistor, preventing the output from floating. See Output
Pull-Down.
CSP (DSBGA) devices manufactured with backside coating have an increased resistance to cracking due to the increased physical
strength of the package. Devices with backside coating are highly encouraged for new designs.
6 Pin Configuration and Functions
8-PIN
YZP PACKAGE
D
D
C
C
B
B
A
A
2
1
1
LASER MARKING
VIEW
2
BUMP VIEW
Pin Functions
PIN
I/O
DESCRIPTION
NAME
NO.
GND
D1
-
Ground
ON
D2
I
Switch control input. Do not leave floating
VOUT
A1, B1, C1
O
Switch output
VIN
A2, B2, C2
I
Switch input, bypass this input with a ceramic capacitor to ground
Table 1. Bump Assignments (YZP Package)
D
GND
ON
C
VOUT
VIN
B
VOUT
VIN
A
VOUT
VIN
1
2
Copyright © 2011–2016, Texas Instruments Incorporated
Product Folder Links: TPS22920 TPS22920L
Submit Documentation Feedback
3
TPS22920, TPS22920L
SLVSAY8D – JUNE 2011 – REVISED JANUARY 2016
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings (1)
MIN
MAX
UNIT
–0.3
4
V
VIN + 0.3
V
4
V
Maximum Continuous Switch Current
4
A
Maximum Pulsed Switch Current, pulse
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