www.ti.com
Actual Size
(3,10 mm x 4,50 mm)
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
AUTOSWITCHING POWER MUX
FEATURES
D
Two-Input, One-Output Power Multiplexer
With Low r
DS(on)
Switches:
– 84 mΩ Typ (TPS2113)
– 120 mΩ Typ (TPS2112)
Reverse and Cross-Conduction Blocking
Wide Operating Voltage Range . . . .2.8 V to
5.5 V
Low Standby Current . . . . 0.5-µA Typ
APPLICATIONS
D
D
D
D
D
D
D
PCs
PDAs
Digital Cameras
Modems
Cell phones
Digital Radios
MP3 Players
PW PACKAGE
(TOP VIEW)
D
D
D
D
Low Operating Current . . . . 55-µA Typ
D
Adjustable Current Limit
D
Controlled Output Voltage Transition Times,
Limits Inrush Current and Minimizes Output
Voltage Hold-Up Capacitance
D
D
D
D
CMOS and TTL Compatible Control Inputs
Auto-Switching Operating Mode
Thermal Shutdown
Available in a TSSOP-8 Package
STAT
EN
VSNS
ILIM
1
2
3
4
8
7
6
5
IN1
OUT
IN2
GND
DESCRIPTION
The TPS211x family of power multiplexers enables seamless transition between two power supplies, such as a battery and
a wall adapter, each operating at 2.8–5.5 V and delivering up to 1 A. The TPS211x family includes extensive protection
circuitry, including user-programmable current limiting, thermal protection, inrush current control, seamless supply
transition, cross-conduction blocking, and reverse-conduction blocking. These features greatly simplify designing power
multiplexer applications.
TYPICAL APPLICATION
Switch Status
IN1: 2.8 – 5.5 V
TPS2113PW
1
2
3
4
STAT
EN
VSNS
ILIM
IN1
OUT
IN2
GND
8
7
6
5
CL
RL
0.1
µF
R1
RILIM
IN2: 2.8 – 5.5 V
0.1
µF
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 Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
2002, Texas Instruments Incorporated
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
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.
AVAILABLE OPTIONS
FEATURE
Current Limit Adjustment Range
Switching modes
Switch Status Output
Package
Manual
Automatic
TPS2110
0.31–0.75A
Yes
Yes
No
TSSOP-8
TPS2111
0.63–1.25A
Yes
Yes
No
TSSOP-8
TPS2112
0.31–0.75A
No
Yes
Yes
TSSOP-8
TPS2113
0.63–1.25A
No
Yes
Yes
TSSOP-8
TPS2114
0.31–0.75A
Yes
Yes
Yes
TSSOP-8
TPS2115
0.63–1.25A
Yes
Yes
Yes
TSSOP-8
ORDERING INFORMATION
TA
–40°C t 85°C
40°C to
PACKAGE
TSSOP-8
TSSOP 8 (PW)
ORDERING NUMBER(1)
TPS2112PW
TPS2113PW
MARKINGS
2112
2113
(1) The PW package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2112PWR) to indicate tape and reel.
PACKAGE DISSIPATION RATINGS
PACKAGE
TSSOP-8 (PW)
DERATING FACTOR ABOVE
TA = 25°C
3.87 mW/°C
TA
≤
25°C
POWER RATING
386.84 mW
TA = 70°C
POWER RATING
212.76 mW
TA = 85°C
POWER RATING
154.73 mW
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
TPS2112, TPS2113
Input voltage range at pins IN1, IN2, EN, VSNS, ILIM(2)
Output voltage range, VO(OUT), VO(STAT)(2)
Output sink current, IO(STAT)
Continuous output current IO
current,
Continuous total power dissipation
Operating virtual junction temperature range, TJ
Storage temperature range, Tstg
TPS2112
TPS2113
–0.3 V to 6 V
–0.3 V to 6 V
5 mA
0.9 A
1.5 A
See Dissipation Rating Table
–40°C to 125°C
–65°C to 150°C
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds
260°C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to GND.
RECOMMENDED OPERATING CONDITIONS
MIN
Input voltage at IN1 VI(IN1)
IN1,
Input voltage at IN2 VI(IN2)
IN2,
Input voltage, VI(EN), VI(VSNS)
TPS2112
Current limit adjustment range IO(OUT)
range,
Operating virtual junction temperature, TJ
TPS2113
VI(IN2)
≥
2.8 V
VI(IN2) < 2.8 V
VI(IN1)
≥
2.8 V
VI(IN1) < 2.8 V
1.5
2.8
1.5
2.8
0
0.31
0.63
–40
MAX UNIT
5.5
5.5
5.5
5.5
5.5
0.75
1.25
125
A
°C
V
V
V
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
MIN
Human body model
CDM
2
MAX UNIT
2
500
kV
V
www.ti.com
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
ELECTRICAL CHARACTERISTICS
over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400
Ω
(unless otherwise noted)
TPS2112
PARAMETER
POWER SWITCH
TJ = 25°C
25°C,
IL = 500 mA
TJ = 125°C
125°C,
IL = 500 mA
VI(IN1) = VI(IN2) = 5.0 V
VI(IN1) = VI(IN2) = 3.3 V
VI(IN1) = VI(IN2) = 2.8 V
VI(IN1) = VI(IN2) = 5.0 V
VI(IN1) = VI(IN2) = 3.3 V
VI(IN1) = VI(IN2) = 2.8 V
120
120
120
140
140
140
220
220
220
84
84
84
110
110
110
150
150
150
mΩ
mΩ
TEST CONDITIONS
MIN
TYP
MAX
MIN
TPS2113
TYP
MAX
UNIT
rDS( )(1)
DS(on)
Drain-source
D i
on-state
on state resistance
(INx–OUT)
(1) The TPS211x can switch a voltage as low as 1.5 V as long as there is a minimum of 2.8 V at one of the input power pins. In this specific case,
the lower supply voltage has no effect on the IN1 and IN2 switch on-resistances.
PARAMETER
LOGIC INPUTS (EN)
VIH
VIL
High-level input voltage
Low-level input voltage
EN = High, sink current
EN = Low, source current
VI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 5.5 V,
VI(IN2) = 3.3 V, IO(OUT) = 0 A
VI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 3.3 V,
VI(IN2) = 5.5 V, IO(OUT) = 0 A
VI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 5.5 V,
VI(IN2) = 3.3 V, IO(OUT) = 0 A
VI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 3.3 V,
VI(IN2) = 5.5 V, IO(OUT) = 0 A
VI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 5.5 V,
VI(IN2) = 3.3 V, IO(OUT) = 0 A
VI(VSNS) = 1.5 V, EN =Low (IN1 active), VI(IN1) = 3.3 V,
VI(IN2) = 5.5 V, IO(OUT) = 0 A
VI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 5.5 V,
VI(IN2)= 3.3 V, IO(OUT) = 0 A
VI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 3.3 V,
VI(IN2) =5.5 V, IO(OUT) = 0 A
EN = High (inactive), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A
EN = High (inactive), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V,
EN = High (inactive), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V,
EN = High (inactive), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V,
EN = High (inactive), VI(IN1) = 5.5 V, IN2 open,
VO(OUT) = 0 V (shorted), TJ = 25°C
EN = High (inactive), VI(IN2) = 5.5 V, IN1 open,
VO(OUT) = 0 V (shorted), TJ = 25°C
EN = High (inactive), VI(INx) = 0 V, VO(OUT) = 5.5 V, TJ = 25°C
IO(OUT) = 0 A
IO(OUT) = 0 A
IO(OUT) = 0 A
0.5
0.1
0.1
0.3
1
55
0.5
0.5
1.4
2
0.7
1
5
V
V
µA
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input current
SUPPLY AND LEAKAGE CURRENTS
55
1
90
12
µA
75
1
1
75
µA
12
90
2
1
1
2
5
5
5
µA
µA
µA
µA
µA
Su ly
Supply current from IN1
(operating)
Su ly
Supply current from IN2
(operating)
Quiescent current from IN1
(STANDBY)
Quiescent current from IN2
(STANDBY)
Forward leakage current from IN1
(measured from OUT to GND)
Forward leakage current from IN2
(measured from OUT to GND)
Reverse leakage current to INx
(measured from INx to GND)
STAT OUTPUT
Leakage current
Saturation voltage
Deglitch time (falling edge only)
VO(STAT) = 5.5 V
II(STAT) = 2 mA, IN1 switch is on
0.01
0.13
150
1
0.4
µA
V
µs
3
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
www.ti.com
ELECTRICAL CHARACTERISTICS (Continued)
over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400
Ω
(unless otherwise noted)
PARAMETER
CURRENT LIMIT CIRCUIT
TPS2112
Current limit accuracy
TPS2113
td
Current limit settling time(1)
Input current at ILIM
(1) Not tested in production.
PARAMETER
VSNS COMPARATOR
VSNS threshold voltage
VSNS comparator hysteresis(1)
Deglitch of VSNS comparator (both
↑↓)
(1)
Input current
UVLO
Falling edge
IN1 and IN2 UVLO
IN1 and IN2 UVLO hysteresis(1)
Falling edge
Internal VDD UVLO (the higher of IN1 and IN2)
Internal VDD UVLO hysteresis(1)
UVLO deglitch for IN1, IN2(1)
(1) Not tested in production.
PARAMETER
REVERSE CONDUCTION BLOCKING
∆V
O(I_block)
Minimum output-to-input voltage
difference to block switching
EN = high, VI(IN1) = 3.3 V and VI(IN2) = VI(VSNS) =
0 V. Connect OUT to a 5 V supply through a series
1-kΩ resistor. Let EN = low. Slowly decrease the
supply voltage until OUT connects to IN1.
TEST CONDITIONS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Rising edge
30
Falling edge
Rising edge
30
2.4
1.15
1.25
1.30
57
2.53
2.58
50
110
2.8
75
V
mV
µs
1.35
65
V
mV
0 V
≤
VI(VSNS)
≤
5.5 V
VI(VSNS)
↑
VI(VSNS)
↓
0.78
0.735
30
90
–1
150
0.8
0.755
0.82
0.775
60
220
1
V
mV
µs
µA
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RILIM = 400
Ω
RILIM = 700
Ω
RILIM = 400
Ω
RILIM = 700
Ω
Time for short–circuit output current to
settle within 10% of its steady state value.
VI(ILIM) = 0 V, IO(OUT) = 0 A
–15
0.51
0.30
0.95
0.47
0.63
0.36
1.25
0.71
1
0
0.80
0.50
1.56
0.99
ms
µA
A
TEST CONDITIONS
MIN
TYP
MAX
UNIT
80
100
120
mV
PARAMETER
THERMAL SHUTDOWN
Thermal shutdown threshold(1)
Recovery from thermal shutdown(1)
Hysteresis(1)
IN2–IN1 COMPARATORS
Hysteresis of IN2–IN1 comparator
Deglitch of IN2–IN1 comparator, (both
↑↓)
(1)
(1) Not tested in production.
MIN
TYP
MAX
UNIT
TPS211x is in current limit.
TPS211x is in current limit.
135
125
10
°C
C
0.1
90
150
0.2
220
V
µs
4
www.ti.com
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
SWITCHING CHARACTERISTICS
over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400
Ω
(unless otherwise noted)
TPS2112
PARAMETER
POWER SWITCH
tr
Output rise time from
an enable(1)
Output fall time from
a disable(1)
VI(IN1) = VI(IN2) = 5 V,
VI(VSNS) = 1.5 V
VI(IN1) = VI(IN2) = 5 V,
VI(VSNS) = 1.5 V
TJ = 25°C, CL = 1
µF,
IL = 500 mA,
See Figure 1(a)
TJ = 25°C, CL = 1
µF,
IL = 500 mA,
See Figure 1(a)
TJ = 125°C, CL = 10
µF,
IL = 500 mA
[Measure transition time
as 10–90% rise time or
from 3.4 V to 4.8 V on
VO(OUT)],
See Figure 1(b)
TJ = 25°C, CL = 10
µF,
IL = 500 mA,
See Figure 1(a)
TJ = 25°C, CL = 10
µF,
IL = 500 mA,
See Figure 1(a)
0.5
1.0
1.5
1
1.8
3
ms
TEST CONDITIONS
MIN
TYP
MAX
MIN
TPS2113
TYP
MAX
UNIT
tf
0.35
0.5
0.7
0.5
1
2
ms
tt
Transition time(1)
IN1 to IN2 transition,
VI(IN1) = 3.3 V,
VI(IN2) = 5 V,
VI(EN) = 0 V
VI(IN1) = VI(IN2) = 5 V
Measured from enable to
10% of VO(OUT),
VI(VSNS) = 1.5 V
VI(IN1) = VI(IN2) = 5 V,
Measured from disable
to 90% of VO(OUT),
VI(VSNS) = 1.5 V
Logic 1 to Logic 0
transition on VSNS ,
VI(IN1) = 1.5 V,
VI(IN2) = 5 V,
VI(EN) = 0 V,
Measured from VSNS to
10% of VO(OUT)
Logic 0 to Logic 1
transition on VSNS
VI(IN1) = 1.5V,
VI(IN2) = 5V,
VI(EN) = 0 V,
Measured from VSNS to
90% of VO(OUT)
40
60
40
60
µs
tPLH1
Turn-on propagation
delay from enable(1)
Turn-off propagation
delay from a
disable(1)
0.5
1
ms
tPHL1
3
5
ms
tPLH2
Switch-over rising
propagation delay(1)
TJ = 25°C, CL = 10
µF,
IL = 500 mA,
See Figure 1(c)
0.17
1
0.17
1
ms
tPHL2
Switch-over falling
propagation delay(1)
TJ = 25°C, CL = 10
µF,
IL = 500 mA,
See Figure 1(c)
2
3
10
2
5
10
ms
(1) Not tested in production.
5
京公网安备 11010802033920号
EEWORLD
