TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
CARDBUS POWER-INTERFACE SWITCHES
FOR SERIAL PCMCIA CONTROLLERS
FEATURES
APPLICATIONS
• Provides S-CARD and M-CARD Power
Management for CableCARD™ Applications
• Single-Slot Switch: TPS2220A
Dual-Slot Switches: TPS2223A, TPS2224A,
TPS2226A
• Fast Current Limit Response Time
• Fully Integrated VCC and VPP Switching for
3.3 V, 5 V, and 12 V (no 12 V on TPS2223A)
• Meets Current PC Card™ Standards
• Vpp Output Selection Independent of VCC
• 12-V and 5-V Supplies Can Be Disabled
• TTL-Logic Compatible Inputs
• Short-Circuit and Thermal Protection
• 24-Pin HTSSOP, 24- or 30-Pin SSOP
• 140-µA (Typical) Quiescent Current from
3.3-V Input
• Break-Before-Make Switching
• Power-On Reset
• –40°C to 85°C Operating Ambient Temperature
Range
•
•
•
•
•
1
234
Notebook and Desktop Computers
Bar Code Scanners
Digital Cameras
Set-Top Boxes
PDAs
TPS2223A, TPS2224A
DB OR PWP PACKAGE
(TOP VIEW)
5V
5V
DATA
CLOCK
LATCH
NC
12V†
AVPP
AVCC
AVCC
GND
RESET
1
2
3
4
5
6
7
8
9
10
11
12
NC − No internal connection
† Pin 7 and 20 are NC for
24
23
22
21
20
19
18
17
16
15
14
13
5V
NC
NC
SHDN
12V†
BVPP
BVCC
BVCC
NC
OC
3.3V
3.3V
TPS2223A.
DESCRIPTION
The TPS2223A, TPS2224A, and TPS2226A CardBus™ power-interface switches provide an integrated
power-management solution for two PC Card sockets. The TPS2220A is a single-slot option for this family of
devices. These devices allow the controlled distribution of 3.3 V, 5 V, and 12 V to each card slot. The
current-limiting and thermal-protection features eliminate the need for fuses. Current-limit reporting helps the user
isolate a system fault. The switch rDS(on) and current-limit values have been set for the peak and average current
requirements stated in the PC Card specification, and optimized for cost. A faster maximum current limit
response time is the only difference between the TPS2223A, TPS2224A, and TPS2226A and the TPS2223,
TPS2224, and TPS2226.
Like the TPS2214 and TPS2214A and the TPS2216 and TPS2216A, this family of devices supports independent
VPP/VCC switching; however, the standby and interface-mode pins are not supported. Shutdown mode is now
supported independently on SHDN as well as in the serial interface. Optimized for lower power implementation,
the TPS2223A does not support 12-V switching to VPP. For the most current package and ordering information,
see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
1
2
3
4
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.
CableCARD is a trademark of Cable Tevelision Laboratories, Inc..
PC Card, CardBus are trademarks of PCMCIA (Personal Computer Memory Card International Association).
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2002–2008, Texas Instruments Incorporated
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
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.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
VI
Input voltage range for card power
TPA222xA
UNIT
VI(3.3V)
–0.3 to 5.5
V
VI(5V)
–0.3 to 5.5
V
VI(12V) (2)
–0.3 to 14
V
–0.3 to 6
V
VO(xVCC)
–0.3 to 6
V
VO(xVPP)
–0.3 to 14
V
Logic input/output voltage
VO
Output voltage
Continuous total power dissipation
See Dissipation Rating Table
IO(xVCC)
Internally Limited
IO
Output current
TJ
Operating virtual junction temperature range
–40 to 100
°C
Tstg
Storage temperature range
–55 to 150
°C
10
mA
IO(xVPP)
Internally Limited
OC sink current
(1)
(2)
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.
Not applicable for TPS2223A
DISSIPATION RATING TABLE
PACKAGE (1)
DB
PWP
(1)
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
356 mW
24
890 mW
8.9 mW/°C
489 mW
30
1095 mW
10.95 mW/°C
602 mW
438 mW
24
3322 mW
33.22 mW/°C
1827 mW
1329 mW
These devices are mounted on an JEDEC low-k board (2-oz. traces on surface).
RECOMMENDED OPERATING CONDITIONS
VI(3.3V) (1)
Input voltage, VI(3.3V) is required for all circuit
operations. 5V and 12V are only required for VI(5V)
their respective functions.
VI(12V) (2)
IO
Output current
f(clock)
Clock frequency
MIN
MAX
3
3.6
3
5.5
7
13.5
UNIT
V
IO(xVCC) at TJ = 100°C
1
IO(xVPP) at TJ = 100°C
100
mA
2.5
MHz
Data
200
Latch
250
Clock
100
Reset
100
A
tw
Pulse duration
th
Data-to-clock hold time (see Figure 2)
100
ns
tsu
Data-to-clock setup time (see Figure 2)
100
ns
td(latch)
Latch delay time (see Figure 2)
100
ns
td(clock)
Clock delay time (see Figure 2)
250
ns
(1)
(2)
2
ns
It is understood that for VI(3.3V) < 3 V, voltages within the absolute maximum ratings applied to pin 5V or pin 12V do not damage the IC.
Not applicable for TPS2223A
Submit Documentation Feedback
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
RECOMMENDED OPERATING CONDITIONS (continued)
Operating virtual junction temperature (maximum to be calculated at worst case PD at 85°C
ambient)
TJ
MIN
MAX
UNIT
–40
100
°C
ELECTRICAL CHARACTERISTICS
TJ = 25°C, VI(5V) = 5 V, VI(3.3V) = 3.3 V, VI(12V) = 12 V (not applicable for TPS2223A), all outputs unloaded (unless otherwise
noted)
TEST CONDITIONS (1)
PARAMETER
MIN
TYP
MAX
UNIT
POWER SWITCH
IO = 750 mA each
3.3V to xVCC (2)
Static drain-source
on-state resistance
3.3V or 5V to xVPP (2)
12V to xVPP (2)
Output discharge
resistance
IOS
TJ
140
95
130
IO = 500 mA each, TJ = 100°C
120
160
IO = 50 mA each
0.8
1
IO = 50 mA each, TJ = 100°C
1
1.3
IO = 50 mA each
2
2.5
2.5
3.4
IO = 50 mA each, TJ = 100°C
Discharge at xVCC
IO(disc) = 1 mA
0.5
0.7
1
Discharge at xVPP
IO(disc) = 1 mA
0.2
0.4
0.5
Short-circuit output current
Thermal shutdown
temperature (2)
110
IO = 500 mA each
5V to xVCC (2)
rDS(on)
85
110
IO = 750 mA each, TJ = 100°C
Thermal trip point
Limit (steady-state value), output
powered into a short circuit
IOS(xVCC)
1
1.4
2
IOS(xVPP)
120
200
300
Limit (steady-state value), output
powered into a short circuit,
TJ = 100°C
IOS(xVCC)
1
1.4
2
IOS(xVPP)
120
200
300
Rising temperature
135
Hysteresis
5V to xVCC = 5 V, with 100-mΩ short to GND
10
5V to xVPP = 5 V, with 100-mΩ short to GND
3
II(3.3V)
Normal
operation
II
Input current, quiescent
Shutdown mode
II(5V)
140
VO(xVCC) = VO(xVPP) = 3.3 V and
also for RESET = 0 V
8
12
180
II(3.3V)
0.3
2
0.1
2
VO(xVCC) = VO(xVPP) = Hi-z
0.3
VO(xVCC) = 5 V, VI(5V) = VI(12V) = 0 V
Ilkg
Leakage current,
output off state
Shutdown mode
VO(xVPP) = 12 V, VI(5V) = VI(12V) = 0 V
(1)
(2)
(3)
(4)
A
mA
A
mA
200
100
II(12V)
kΩ
µs
II(12V)
II(5V)
Ω
°C
10
Current-limit response time (3) (4)
mΩ
µA
2
10
TJ = 100°C
50
10
TJ = 100°C
µA
50
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
TPS2223A, TPS2224A, TPS2226A: two switches on. TPS2220A: one switch on.
Specified by design; not tested in production.
From application of short to 110% of final current limit.
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
3
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
ELECTRICAL CHARACTERISTICS (continued)
TJ = 25°C, VI(5V) = 5 V, VI(3.3V) = 3.3 V, VI(12V) = 12 V (not applicable for TPS2223A), all outputs unloaded (unless otherwise
noted)
TEST CONDITIONS (1)
PARAMETER
MIN
TYP
MAX
-20
-10
UNIT
LOGIC SECTION (CLOCK, DATA, LATCH, RESET, SHDN, OC)
(5)
II(/RESET)
II
Input current, logic
-1
RESET = 0 V
II(/SHDN) (5)
II(LATCH) (5)
II(CLOCK,
RESET = 5.5 V
DATA)
-30
SHDN = 5.5 V
SHDN = 0 V
1
-1
1
-50
-3
LATCH = 5.5 V
LATCH = 0 V
-1
1
0 V to 5.5 V
-1
1
VIH
High-level input voltage, logic
VIL
Low-level input voltage, logic
VO(sat)
Output saturation voltage at OC
IO = 2 mA
Ilkg
Leakage current at OC
VO(/OC) = 5.5 V
µA
50
2
V
0.8
V
0.14
0.4
V
0
1
µA
2.7
2.9
UVLO AND POR (POWER-ON RESET)
VI(3.3V)
Input voltage at 3.3V pin, UVLO
Vhys(3.3V)
UVLO hysteresis voltage at VA (6)
VI(5V)
Input voltage at 5V pin, UVLO
Vhys(5V)
tdf
4
5-V level below which only 5V switches are Hi-Z
Input voltage, power-on reset (6)
2.4
100
Delay from voltage hit (step from 3 V to 2.3 V) to
Hi-Z control (90% VG to GND)
(6)
Delay time for falling response, UVLO
VI(POR)
(5)
(6)
UVLO hysteresis voltage at 5V
3.3-V level below which all switches are Hi-Z
(6)
3.3-V voltage below which POR is asserted causing a
RESET internally with all line switches open and all
discharge switches closed.
2.3
2.5
V
mV
2.8
V
100
mV
4
µs
1.7
V
LATCH has low-current pulldown. RESET and SHDN have low-current pullup.
Specified by design; not tested in production.
Submit Documentation Feedback
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
SWITCHING CHARACTERISTICS
VCC = 5 V, TA = 25°C, VI(3.3V) = 3.3 V, VI(5V) = 5 V, VI(12) = 12 V (not applicable for TPS2223A) all outputs unloaded (unless
otherwise noted)
PARAMETER (1)
tr
tf
LOAD CONDITION
Output rise times (3)
Output fall times
(3)
TEST CONDITIONS (2)
0.9
VO(xVPP) = 12 V
0.26
CL(xVCC) = 150 µF, CL(xVPP) = 10 µF,
IO(xVCC) = 0.75 A, IO(xVPP) = 50 mA
VO(xVCC) = 5 V
1.1
VO(xVPP) = 12 V
0.6
VO(xVCC) = 5 V,
Discharge switches ON
0.5
VO(xVPP) = 12 V,
Discharge switches ON
0.2
CL(xVCC) = 0.1 µF, CL(xVPP) = 0.1 µF,
IO(xVCC) = 0 A, IO(xVPP) = 0 A
VO(xVCC) = 5 V
2.35
VO(xVPP) = 12 V
3.9
Latch↑ to xVPP (12V) (4)
Latch↑ to xVPP (5V)
CL(xVCC) = 0.1 µF, CL(xVPP) = 0.1 µF,
IO(xVCC) = 0 A, IO(xVPP) = 0 A
Latch↑ to xVPP (3.3V)
Latch↑ to xVCC (5V)
Latch↑ to xVCC (3.3V)
Propagation delay
times (3)
Latch↑ to xVPP (12V) (4)
Latch↑ to xVPP (5V)
CL(xVCC) = 150 µF, CL(xVPP) = 10 µF,
IO(xVCC) = 0.75 A, IO(xVPP) = 50 mA
Latch↑ to xVPP (3.3V)
Latch↑ to xVCC (5V)
Latch↑ to xVCC (3.3V)
(1)
(2)
(3)
(4)
TYP MAX
VO(xVCC) = 5 V
CL(xVCC) = 150 µF, CL(xVPP) = 10 µF,
IO(xVCC) = 0.75 A, IO(xVPP) = 50 mA
tpd
MIN
CL(xVCC) = 0.1 µF, CL(xVPP) = 0.1 µF,
IO(xVCC) = 0 A, IO(xVPP) = 0 A
tpdon
2
tpdoff
0.62
tpdon
0.77
tpdoff
0.51
tpdon
0.75
tpdoff
0.52
tpdon
0.3
tpdoff
2.5
tpdon
0.3
tpdoff
2.8
tpdon
2.2
tpdoff
0.8
tpdon
0.8
tpdoff
0.6
tpdon
0.8
tpdoff
0.6
tpdon
0.6
tpdoff
2.5
tpdon
0.5
tpdoff
2.6
UNIT
ms
ms
ms
ms
Refer to Parameter Measurement Information in Figure 1.
No card inserted, assumes a 0.1-µF output capacitor (see Figure 1).
Specified by design; not tested in production.
Not applicable for TPS2223A
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
5
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
FUNCTIONAL BLOCK DIAGRAM OF TPS2223A, TPS2224A and TPS2226A (see Note A)
13
S2
14
S5
1
5V
2
5V
5 V 24
S3
3.3 V
3.3 V
Power
Inputs
5V
10
S1
S6
17
CS
See Note B
See Note C
12 V
9
CS
See Note B
S4
See Note B
S8
7
18
8
CS
AVCC
AVCC
BVCC
BVCC
AVPP
Power Outputs
Power
Inputs
3.3V
S9
S7
Power
Inputs
12V
S10
See Note D
See Note B
CS
S12
12 V 20
See Note C
19
S13
S11
S14
Control Logic
21
12
SHDN
3
4
DATA
5
15
NOTES: A.
B.
C.
D.
6
BVPP
Discharge
Element
See Note C
Current Limit
RESET
Thermal Limit
CLOCK
LATCH
11
GND
UVLO
OC
POR
Diagram shown for 24-pin DB package.
Current sense
The two 12-V pins must be externally connected.
No connections for TPS2223A.
Submit Documentation Feedback
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
FUNCTIONAL BLOCK DIAGRAM OF TPS2220A
See Note A
S2
3.3 V
CS
AVCC
AVCC
S1
S3
5V
S4
See Note A
CS
AVPP
S5
S7
5V
12 V
See Note B
S6
12 V
See Note B
Control Logic
Current Limit
SHDN
RESET
Thermal Limit
DATA
CLOCK
GND
LATCH
UVLO
OC
POR
NOTES: A. Current sense
B. The two 12-V pins must be externally connected.
PIN ASSIGNMENTS
TPS2226A
DB PACKAGE
(TOP VIEW)
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
AVCC
GND
NC
RESET
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
TPS2220A
DB OR PWP PACKAGE
(TOP VIEW)
5V
NC
NC
NC
NC
SHDN
12V
BVPP
BVCC
BVCC
BVCC
NC
OC
3.3V
3.3V
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
GND
RESET
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
NC
NC
NC
SHDN
12V
NC
NC
NC
NC
OC
NC
3.3V
NC - No internal connection
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
7
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
TPS2220A TPS2223A TPS2224A TPS2226A
3.3V
13
13, 14
13, 14
15, 16, 17
I
3.3-V input for card power and chip power
5V
1, 2
1, 2, 24
1, 2, 24
1, 2, 30
I
5-V input for card power
12V
7, 20
NA
7, 20
7, 24
I
12-V input for card power (xVPP). The two 12-V pins must be
externally connected.
AVCC
9, 10
9, 10
9, 10
9, 10, 11
O
Switched output that delivers 3.3 V, 5 V, ground or high impedance to
card
AVPP
8
8
8
8
O
Switched output that delivers 3.3 V, 5 V, 12 V, ground or high
impedance to card (12 V not applicable to TPS2223A)
BVCC
–
17, 18
17, 18
20, 21, 22
O
Switched output that delivers 3.3 V, 5 V, ground or high impedance to
card
BVPP
–
19
19
23
O
Switched output that delivers 3.3 V, 5 V, 12 V, ground or high
impedance to card (12 V not applicable for TPS2223A)
GND
11
11
11
12
OC
15
15
15
18
O
Open-drain overcurrent reporting output that goes low when an
overcurrent condition exists. An external pullup is required.
SHDN
21
21
21
25
I
Hi-Z (open) all switches. Identical function to serial D8. Asynchronous
active-low command, internal pullup
RESET
12
12
12
14
I
Logic-level RESET input active low. Asynchronous active-low
command, internal pullup
CLOCK
4
4
4
4
I
Logic-level clock for serial data word
DATA
3
3
3
3
I
Logic-level serial data word
LATCH
5
5
5
5
I
Logic-level latch for serial data word, internal pulldown
6, 16, 22,
23
6, 13, 19,
26, 27, 28,
29
NC
8
6, 14, 16,
17, 18, 19,
22, 23, 24
6, 7, 16,
20, 22, 23
Submit Documentation Feedback
Ground
No internal connection
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
PARAMETER MEASUREMENT INFORMATION
xVPP
xVCC
IO(xVPP)
IO(xVCC)
LOAD CIRCUIT (xVCC)
LOAD CIRCUIT (xVPP)
VDD
LATCH
VDD
LATCH
50%
50%
GND
GND
tpd(off)
tpd(on)
VI(12V/5V/3.3V)
VI(5V/3.3V)
90%
VO(xVPP)
VO(xVCC)
Propagation Delay (xVCC)
tf
tf
tr
VI(12V/5V/3.3V)
VI(5V/3.3V)
VO(xVCC)
90%
GND
10%
GND
10%
Propagation Delay (xVPP)
VO(xVPP)
90%
GND
10%
tr
tpd(off)
tpd(on)
90%
GND
10%
Rise/Fall Time (xVCC)
Rise/Fall Time (xVPP)
VDD
LATCH
VDD
50%
50%
LATCH
GND
GND
toff
ton
VI(5V/3.3V)
VI(12V/5V/3.3V)
VO(xVPP)
toff
ton
VO(xVCC)
90%
90%
GND
10%
10%
Turnon/off Time (xVPP)
GND
Turnon/off Time (xVCC)
VOLTAGE WAVEFORMS
Figure 1. Test Circuits and Voltage Waveforms
DATA
D10
D9
D8
D7
Data Setup Time
D6
D5
Data Hold Time
D4
D3
D2
D1
D0
Latch Delay Time
LATCH
Clock Delay Time
CLOCK
NOTE: Data is clocked in on the positive edge of the clock. The positive edge of the latch signal should occur before the next
positive edge of the clock. For definition of D0 to D10, see the control logic table.
Figure 2. Serial-Interface Timing for TPS2226A
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
9
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
PARAMETER MEASUREMENT INFORMATION (continued)
Table of Graphs
FIGURE
Short-circuit response, short applied to powered-on 5-V xVCC-switch output
vs Time
3
Short-circuit response, short applied to powered-on 12-V xVPP-switch output vs Time
4
OC response with ramped overcurrent-limit load on 5-V xVCC-switch output
vs Time
5
OC response with ramped overcurrent-limit load on 12-V xVPP-switch output vs Time
6
xVCC Turnon propagation delay time L = 150 µF)
vs Junction temperature
7
xVCC Turnoff propagation delay time L = 150 µF)
vs Junction temperature
8
xVPP Turnon propagation delay time L = 10 µF)
vs Junction temperature
9
xVPP Turnoff propagation delay time L = 10 µF)
vs Junction temperature
10
xVCC Turnon propagation delay time (TJ = 25°C)
vs Load capacitance
11
xVCC Turnoff propagation delay time (TJ = 25°C)
vs Load capacitance
12
xVPP Turnon propagation delay time (TJ = 25°C)
vs Load capacitance
13
xVPP Turnoff propagation delay time (TJ = 25°C)
vs Load capacitance
14
xVCC Rise time
= 150 µF)
vs Junction temperature
15
xVCC Fall time L = 150 µF)
vs Junction temperature
16
xVPP Rise time L = 10 µF)
vs Junction temperature
17
xVPP Fall time L = 10 µF)
vs Junction temperature
18
xVCC Rise time (TJ = 25°C)
vs Load capacitance
19
xVCC Fall time (TJ = 25°C)
vs Load capacitance
20
xVPP Rise time (TJ = 25°C)
vs Load capacitance
21
xVPP Fall time (TJ = 25°C)
vs Load capacitance
22
L
SHORT-CIRCUIT RESPONSE,
SHORT APPLIED TO POWERED-ON 5-V
xVCC-SWITCH OUTPUT
SHORT-CIRCUIT RESPONSE,
SHORT APPLIED TO POWERED-ON 12-V
xVPP-SWITCH OUTPUT
VO(/OC)
5 V/div
VO(/OC)
2 V/div
VIN(5V)
2 V/div
IO(xVPP)
2 A/div
IO(VCC)
5 A/div
0
100
200
300
t − Time − µs
Figure 3.
10
Submit Documentation Feedback
400
500
0
1
2
3
4
5
t − Time − ms
Figure 4.
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
OC RESPONSE WITH RAMPED
OVERCURRENT-LIMIT LOAD ON 5-V
xVCC-SWITCH OUTPUT
OC RESPONSE WITH RAMPED
OVERCURRENT-LIMIT LOAD ON 12-V
xVPP-SWITCH OUTPUT
VO(/OC)
5 V/div
VO(/OC)
5 V/div
IO(xVCC)
1 A/div
IO(xVPP)
100 mA/div
0
10
20
30
40
50
0
t − Time − ms
Figure 5.
xVCC = 5 V
IO = 0.75 A
CL = 150 µF
0.6
0.5
0.4
0.3
0.2
0.1
−20
10
40
70
TJ − Junction Temperature − °C
Figure 7.
Copyright © 2002–2008, Texas Instruments Incorporated
100
t pd(off) − Turnoff Propagation Delay Time, xVCC − ms
t pd(on) − Turnon Propagation Delay Time, xVCC − ms
6
8
10
TURNOFF PROPAGATION DELAY TIME, xVCC
vs
JUNCTION TEMPERATURE
0.8
0
−50
4
t − Time − ms
Figure 6.
TURNON PROPAGATION DELAY TIME, xVCC
vs
JUNCTION TEMPERATURE
0.7
2
2.6
xVCC = 5 V
IO = 0.75 A
CL = 150 µF
2.55
2.5
2.45
2.4
2.35
2.3
2.25
−50
−20
10
40
70
TJ − Junction Temperature − °C
Figure 8.
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
100
11
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
xVPP = 12 V
IO = 0.05 A
CL = 10 µF
2.5
2
1.5
1
0.5
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
0.9
0.8
0.7
0.6
0.5
0.4
0.3
xVCC = 12 V
IO = 0.05 A
CL = 10 µF
0.2
0.1
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
Figure 9.
Figure 10.
TURNON PROPAGATION DELAY TIME, xVCC
vs
LOAD CAPACITANCE
TURNON PROPAGATION DELAY TIME, xVCC
vs
LOAD CAPACITANCE
0.7
xVCC = 5 V
IO = 0.75 A
TJ = 25°C
0.6
0.5
0.4
0.3
0.2
0.1
0
t pd(off) − Turnoff Propagation Delay Time, xVCC − ms
3
0.1
1
10
100
CL − Load Capacitance − µF
Figure 11.
12
TURNON PROPAGATION DELAY TIME, xVPP
vs
JUNCTION TEMPERATURE
Submit Documentation Feedback
1000
t pd(off) − Turnoff Propagation Delay Time, xVCC − ms
t pd(on) − Turnon Propagation Delay Time, xVCC − ms
t pd(on) − Turnon Propagation Delay Time, xVPP − ms
TURNON PROPAGATION DELAY TIME, xVPP
vs
JUNCTION TEMPERATURE
100
2.55
2.5
xVCC = 5 V
IO = 0.75 A
TJ = 25°C
2.45
2.4
2.35
2.3
2.25
0.1
1
10
100
CL − Load Capacitance − µF
1000
Figure 12.
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
TURNON PROPAGATION DELAY TIME, xVPP
vs
LOAD CAPACITANCE
2.25
2.2
xVPP = 12 V
IO = 0.05 A
TJ = 25°C
2.15
2.1
2.05
2
1.95
0.1
1
CL − Load Capacitance − µF
10
t pd(off) − Turnoff Propagation Delay Time, xVPP − ms
t pd(on) − Turnon Propagation Delay Time, xVPP − ms
TURNON PROPAGATION DELAY TIME, xVPP
vs
LOAD CAPACITANCE
0.8
xVPP = 12 V
IO = 0.05 A
TJ = 25°C
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1
1
CL − Load Capacitance − µF
Figure 13.
Figure 14.
RISE TIME, xVCC
vs
JUNCTION TEMPERATURE
FALL TIME, xVCC
vs
JUNCTION TEMPERATURE
1.22
10
2.41
xVCC = 5 V
IO = 0.75 A
CL = 150 µF
1.18
2.4
t f − Fall Time xVCC − ms
1.2
t r − Rise Time, xVCC − ms
0.9
1.16
1.14
1.12
1.1
xVCC = 5 V
IO = 0.75 A
CL = 150 µF
2.39
2.38
2.37
2.36
1.08
2.35
1.06
1.04
−50
−20
10
40
70
TJ − Junction Temperature − °C
Figure 15.
Copyright © 2002–2008, Texas Instruments Incorporated
100
2.34
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
Figure 16.
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
13
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
RISE TIME, xVPP
vs
JUNCTION TEMPERATURE
FALL TIME, xVPP
vs
JUNCTION TEMPERATURE
4.15
0.605
xVPP = 12 V
IO = 0.05 A
CL = 10 µF
4.1
t f − Fall Time, xVPP − ms
t r − Rise Time xVPP − ms
0.6
0.595
0.59
0.585
0.58
−20
10
40
70
TJ − Junction Temperature − °C
4
3.95
3.85
−50
100
Figure 18.
RISE TIME, xVCC
vs
LOAD CAPACITANCE
FALL TIME, xVCC
vs
LOAD CAPACITANCE
1.2
2.5
1
2
0.8
0.6
0.4
0
0.1
−20
10
40
70
TJ − Junction Temperature − °C
Figure 17.
xVCC = 5 V
IO = 0.75 A
TJ = 25°C
0.2
1
10
100
CL − Load Capacitance − µF
Figure 19.
14
4.05
3.9
t f − Fall Time xVCC − ms
t r − Rise Time, xVCC − ms
0.575
−50
xVPP = 12 V
IO = 0.05 A
CL = 10 µF
Submit Documentation Feedback
100
xVCC = 5 V
IO = 0.75 A
TJ = 25°C
1.5
1
0.5
1000
0
0.1
1
10
100
CL − Load Capacitance − µF
1000
Figure 20.
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
RISE TIME, xVPP
vs
LOAD CAPACITANCE
FALL TIME, xVPP
vs
LOAD CAPACITANCE
0.7
4
t f − Fall Time, xVPP − ms
t r − Rise Time, xVPP − ms
0.6
4.5
xVPP = 12 V
IO = 0.05 A
TJ = 25°C
0.5
0.4
0.3
0.2
xVPP = 12 V
IO = 0.05 A
TJ = 25°C
3.5
3
2.5
2
1.5
1
0.1
0
0.1
0.5
1
CL − Load Capacitance − µF
10
0
0.1
1
CL − Load Capacitance − µF
Figure 21.
10
Figure 22.
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
Input current, xVCC = 3.3 V
II
Input current, xVCC = 5 V
23
vs Junction temperature
Input current, xVPP = 12 V
25
Static drain-source on-state resistance, 3.3 V to xVCC switch
rDS(on)
Static drain-source on-state resistance, 5 V to xVCC switch
26
vs Junction temperature
Static drain-source on-state resistance, 12 V to xVPP switch
xVCC switch voltage drop, 5-V input
29
vs Load current
30
xVPP switch voltage drop, 12-V input
31
Short-circuit current limit, 3.3 V to xVCC
IOS
Short-circuit current limit, 5 V to xVCC
32
vs Junction temperature
Short-circuit current limit, 12 V to xVPP
Copyright © 2002–2008, Texas Instruments Incorporated
27
28
xVCC switch voltage drop, 3.3-V input
VO
24
33
34
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
15
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
INPUT CURRENT, xVCC = 3.3 V
vs
JUNCTION TEMPERATURE
INPUT CURRENT, xVCC = 5 V
vs
JUNCTION TEMPERATURE
180
14
I I − Input Current, xVCC = 5 V − µ A
I I − Input Current, xVCC = 3.3 V − µ A
160
140
120
100
80
60
40
12
10
8
6
4
2
20
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
0
−50
100
Figure 23.
rDS(on) − Static Drain-Source On-State Resistance,
3.3 V to xVCC Switch − Ω
I I − Input Current, xVPP = 12 V − µ A
120
100
80
60
40
20
−20
10
40
70
TJ − Junction Temperature − °C
Figure 25.
16
Submit Documentation Feedback
100
Figure 24.
INPUT CURRENT, xVPP = 12 V
vs
JUNCTION TEMPERATURE
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
3.3 V TO xVCC SWITCH
vs
JUNCTION TEMPERATURE
0.12
0.1
0.08
0.06
0.04
0.02
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
Figure 26.
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
SLVS428E – MAY 2002 – REVISED MSRCH 2008
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
5 V TO xVCC SWITCH
vs
JUNCTION TEMPERATURE
0.14
rDS(on) − Static Drain-Source On-State Resistance,
12 V to xVPP Switch − Ω
rDS(on) − Static Drain-Source On-State Resistance,
5 V to xVCC Switch − Ω
www.ti.com
0.12
0.1
0.08
0.06
0.04
0.02
0
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
12 V TO xVPP SWITCH
vs
JUNCTION TEMPERATURE
3
2.5
2
1.5
1
0.5
0
−50
Figure 27.
xVCC SWITCH VOLTAGE DROP, 3.3-V INPUT
vs
LOAD CURRENT
0.14
0.1
VO − xVCC Switch Voltage Drop, 5-V Input − V
VO − xVCC Switch Voltage Drop, 3.3-V Input − V
100
xVCC SWITCH VOLTAGE DROP, 5-V INPUT
vs
LOAD CURRENT
0.12
TJ = 100°C
0.08
TJ = 0°C
TJ = 25°C
0.06
TJ = −40°C
0.04
TJ = 85°C
0.02
0
−20
10
40
70
TJ − Junction Temperature − °C
Figure 28.
0
0.2
0.4
0.6
IL − Load Current − A
Figure 29.
Copyright © 2002–2008, Texas Instruments Incorporated
0.8
1
0.12
TJ = 100°C
0.1
TJ = 0°C
0.08
TJ = 25°C
0.06
TJ = −40°C
0.04
TJ = 85°C
0.02
0
0
0.2
0.4
0.6
IL − Load Current − A
Figure 30.
0.8
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
1
17
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
xVPP SWITCH VOLTAGE DROP, 12-V INPUT
vs
LOAD CURRENT
SHORT-CIRCUIT CURRENT LIMIT, 3.3 V TO xVCC
vs
JUNCTION TEMPERATURE
I OS − Short-Circuit Current Limit, 3.3 V to xVCC − A
VO − xVPP Switch Voltage Drop, 12-V Input − V
0.14
0.12
0.1
TJ = 100°C
0.08
TJ = 0°C
TJ = 25°C
0.06
0.04
TJ = −40°C
0.02
0
TJ = 85°C
0
0.01
0.02
0.03
IL − Load Current − A
0.04
0.05
1.385
1.38
1.375
1.37
1.365
1.36
1.355
−50
−20
10
40
70
TJ − Junction Temperature − °C
100
Figure 32.
SHORT-CIRCUIT CURRENT LIMIT, 5 V TO xVCC
vs
JUNCTION TEMPERATURE
SHORT-CIRCUIT CURRENT LIMIT, 12 V TO xVPP
vs
JUNCTION TEMPERATURE
I OS − Short-Circuit Current Limit, 12 V to xVPP − A
I OS − Short-Circuit Current Limit, 5 V to xVCC − A
1.39
Figure 31.
1.435
1.43
1.425
1.42
1.415
1.41
1.405
1.4
1.395
1.39
1.385
−50
−20
10
40
70
TJ − Junction Temperature − °C
Figure 33.
18
1.395
Submit Documentation Feedback
100
0.208
0.206
0.204
0.202
xVPP = 12 V
0.2
0.198
0.196
0.194
0.192
0.19
−50
−20
10
40
70
100
TJ − Junction Temperature − °C
Figure 34.
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
APPLICATION INFORMATION
OVERVIEW
PC Cards were initially introduced as a means to add flash memory to portable computers. The idea of add-in
cards quickly took hold, and modems, wireless LANs, global positioning satellite system (GPS), multimedia, and
hard-disk versions were soon available. As the number of PC Card applications grew, the engineering
community quickly recognized the need for a standard to ensure compatibility across platforms. Therefore, the
PCMCIA (Personal Computer Memory Card International Association) was established, comprising members
from leading computer, software, PC Card, and semiconductor manufacturers. One key goal was to realize the
plug-and-play concept, so that cards and hosts from different vendors would be transparently compatible.
PC CARD POWER SPECIFICATION
System compatibility also means power compatibility. The most current set of specifications (PC Card Standard)
set forth by the PCMCIA committee states that power is to be transferred between the host and the card through
eight of the 68 terminals of the PC Card connector. This power interface consists of two VCC, two Vpp, and four
ground terminals. Multiple VCC and ground terminals minimize connector-terminal and line resistance. The two
Vpp terminals were originally specified as separate signals, but are normally tied together in the host to form a
single node to minimize voltage losses. Card primary power is supplied through the VCC terminals; flash-memory
programming and erase voltage is supplied through the Vpp terminals. Cardbus cards of today typically do not
use 12 V, which is now more of an optional requirement in the host.
DESIGNING FOR VOLTAGE REGULATION
The current PCMCIA specification for output voltage regulation, VO(reg), of the 5-V output is 5% (250 mV). In a
typical PC power-system design, the power supply has an output-voltage regulation, VPS(reg), of 2% (100 mV).
Also, a voltage drop from the power supply to the PC Card results from resistive losses, VPCB, in the PCB traces
and the PCMCIA connector. A typical design would limit the total of these resistive losses to less than 1% (50
mV) of the output voltage. Therefore, the allowable voltage drop, VDS, for the TPS2220A, TPS2223A, TPS2224A,
and TPS2226A would be the PCMCIA voltage regulation less the power supply regulation and less the PCB and
connector resistive drops:
V
+V
–V
–V
DS
O(reg) PS(reg) PCB
Typically, this would leave 100 mV for the allowable voltage drop across the 5-V switch. The specification for
output voltage regulation of the 3.3-V output is 300 mV; therefore, using the same equation by deducting the
voltage drop percentages (2%) for power-supply regulation and PCB resistive loss (1%), the allowable voltage
drop for the 3.3-V switch is 200 mV. The voltage drop is the output current multiplied by the switch resistance of
the device. Therefore, the maximum output current, IO max, that can be delivered to the PC Card in regulation is
the allowable voltage drop across the IC, divided by the output-switch resistance.
V
I max + r DS
O
DS(on)
The xVCC outputs have been designed to deliver the peak and average currents defined by the PC Card
specification within regulation over the operating temperature range. The xVPP outputs of the device have been
designed to deliver 100 mA continuously.
OVERCURRENT AND OVERTEMPERATURE PROTECTION
PC Cards are inherently subject to damage that can result from mishandling. Host systems require protection
against short-circuited cards that can lead to power-supply or PCB trace damage. Even extremely robust
systems can undergo rapid battery discharge into a damaged PC Card, resulting in the sudden and unacceptable
loss of system power. In comparison, the reliability of fused systems is poor because blown fuses require
troubleshooting and repair, usually by the manufacturer.
The TPS2220A, TPS2223A, TPS2224A, and TPS2226A take a two-pronged approach to overcurrent protection,
which is designed to activate if an output is shorted or when an overcurrent condition is present when switches
are powered up. First, instead of fuses, sense FETs monitor each of the xVCC and xVPP power outputs. Unlike
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
19
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
sense resistors or polyfuses, these FETs do not add to the series resistance of the switch; therefore, voltage and
power losses are reduced. Overcurrent sensing is applied to each output separately. Excessive current
generates an error signal that limits the output current of only the affected output, preventing damage to the host.
Each xVCC output overcurrent limits from 1 A to 2.0 A, typically around 1.6 A; the xVPP outputs limit from 100
mA to 250 mA, typically around 200 mA.
Second, when an overcurrent condition is detected, the TPS2220A, TPS2223A, TPS2224A, and TPS2226A
assert an active low OC signal that can be monitored by the microprocessor or controller to initiate diagnostics
and/or send the user a warning message. If an overcurrent condition persists, causing the IC to exceed its
maximum junction temperature, thermal-protection circuitry activates, shutting down all power outputs until the
device cools to within a safe operating region, which is ensured by a thermal shutdown hysteresis. Thermal
limiting prevents destruction of the IC from overheating beyond the package power-dissipation ratings.
During power up, the devices control the rise times of the xVCC and xVPP outputs and limit the inrush current
into a large load capacitance, faulty card, or connector.
12-V SUPPLY NOT REQUIRED
Some PC Card switches use the externally supplied 12 V to power gate drive and other chip functions, which
requires that power be present at all times. The TPS2220A, TPS2224A and TPS2226A offer considerable power
savings by using an internal charge pump to generate the required higher gate drive voltages from the 3.3-V
input. Therefore, the external 12-V supply can be disabled except when needed by the PC Card in the slot,
thereby extending battery lifetime. A special feature in the 12-V circuitry actually helps to reduce the supply
current demanded from the 3.3-V input. When 12 V is supplied and requested at the VPP output, a voltage
selection circuit draws the charge-pump drive current for the 12-V FETs from the 12-V input. This selection is
automatic and effectively reduces demand fluctuations on the normal 3.3-V VCC rail. For proper operation of this
feature, a minimum 3.3-V input capacitance of 4.7 µF is recommended, and a minimum 12-V input ramp-up rate
of 12 V/50 ms (240 V/s) is required. Additional power savings are realized during a software shutdown in which
quiescent current drops to a maximum of 1 µA.
VOLTAGE-TRANSITIONING REQUIREMENT
PC Cards, like portables, are migrating from 5 V to 3.3 V to minimize power consumption, optimize board space,
and increase logic speeds. The TPS2220A, TPS2223A, TPS2224A, and TPS2226A meet all combinations of
power delivery as currently defined in the PCMCIA standard. The latest protocol accommodates mixed 3.3-V/5-V
systems by first powering the card with 5 V, then polling it to determine its 3.3-V compatibility. The PCMCIA
specification requires that the capacitors on 3.3-V-compatible cards be discharged to below 0.8 V before
applying 3.3-V power. This action ensures that sensitive 3.3-V circuitry is not subjected to any residual 5-V
charge and functions as a power reset. PC Card specification requires that VCC be discharged within 100 ms. PC
Card resistance cannot be relied on to provide a discharge path for voltages stored on PC Card capacitance
because of possible high-impedance isolation by power-management schemes. The devices include discharge
transistors on all xVCC and xVPP outputs to meet the specification requirement.
SHUTDOWN MODE
In the shutdown mode, which can be controlled by SHDN or bit D8 of the input serial DATA word, each of the
xVCC and xVPP outputs is forced to a high-impedance state. In this mode, the chip quiescent current is reduced
to 1 µA or less to conserve battery power.
POWER-SUPPLY CONSIDERATIONS
These switches have multiple pins for each 3.3-V (except for TPS2220A) and 5-V power input and for the
switched xVCC outputs. Any individual pin can conduct the rated input or output current. Unless all pins are
connected in parallel, the series resistance is higher than that specified, resulting in increased voltage drops and
power loss. It is recommended that all input and output power pins be paralleled for optimum operation.
To increase the noise immunity of the TPS2220A, TPS2223A, TPS2224A, and TPS2226A, the power-supply
inputs should be bypassed with at least a 4.7-µF electrolytic or tantalum capacitor paralleled by a 0.047-µF to
20
Submit Documentation Feedback
Copyright © 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
TPS2220A, TPS2223A
TPS2224A, TPS2226A
www.ti.com
SLVS428E – MAY 2002 – REVISED MSRCH 2008
0.1-µF ceramic capacitor. It is strongly recommended that the switched outputs be bypassed with a 0.1-µF (or
larger) ceramic capacitor; doing so improves the immunity of the IC to electrostatic discharge (ESD). Care should
be taken to minimize the inductance of PCB traces between the devices and the load. High switching currents
can produce large negative voltage transients, which forward biases substrate diodes, resulting in unpredictable
performance. Similarly, no pin should be taken below -0.3 V.
RESET INPUT
To ensure that cards are in a known state after power brownouts or system initialization, the PC Cards should be
reset at the same time as the host by applying low-impedance paths from xVCC and xVPP terminals to ground.
A low-impedance output state allows discharging of residual voltage remaining on PC Card filter capacitance,
permitting the system (host and PC Cards) to be powered up concurrently. The active low RESET input closes
internal ground switches S1, S4, S7, and S11 with all other switches left open. The TPS2220A, TPS2223A,
TPS2224A, and TPS2226A remain in the low-impedance output state until the signal is de-asserted and further
data is clocked in and latched. The input serial data cannot be latched during reset mode. RESET is provided for
direct compatibility with systems that use an active-low reset voltage supervisor. The RESET pin has an internal
150-kΩ pullup resistor.
CALCULATING JUNCTION TEMPERATURE
The switch resistance, rDS(on), is dependent on the junction temperature, TJ, of the die. The junction temperature
is dependent on both rDS(on) and the current through the switch. To calculate TJ, first find rDS(on) from Figure 26
through Figure 28, using an initial temperature estimate about 30°C above ambient. Then, calculate the power
dissipation for each switch, using the formula:
P +r
I2
D
DS(on)
Next, sum the power dissipation of all switches and calculate the junction temperature:
ǒȍ
Ǔ
T +
P
R
)T
J
D
qJA
A
where:
RθJA is the inverse of the derating factor given in the dissipation rating table.
Compare the calculated junction temperature with the initial temperature estimate. If the temperatures are not
within a few degrees of each other, recalculate using the calculated temperature as the initial estimate.
LOGIC INPUTS AND OUTPUTS
The serial interface consists of the DATA, CLOCK, and LATCH leads. The data is clocked in on the positive
edge of the clock (see Figure 2). The 11-bit (D0-D10) serial data word is loaded during the positive edge of the
latch signal. The positive edge of the latch signal should occur before the next positive edge of the clock occurs.
The serial interface of the device is compatible with serial-interface PCMCIA controllers.
An overcurrent output (OC) is provided to indicate an overcurrent or overtemperature condition in any of the
xVCC and xVPP outputs as previously discussed.
Copyright © 2002–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS2220A TPS2223A TPS2224A TPS2226A
21
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
TPS2220ADBR
ACTIVE
SSOP
DB
24
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2220A
Samples
TPS2220APWP
ACTIVE
HTSSOP
PWP
24
60
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
TPS2220A
Samples
TPS2223ADB
ACTIVE
SSOP
DB
24
60
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2223A
Samples
TPS2223ADBR
ACTIVE
SSOP
DB
24
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2223A
Samples
TPS2223APWP
ACTIVE
HTSSOP
PWP
24
60
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
TPS2223A
Samples
TPS2223APWPR
ACTIVE
HTSSOP
PWP
24
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
TPS2223A
Samples
TPS2224ADB
ACTIVE
SSOP
DB
24
60
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2224A
Samples
TPS2224ADBR
ACTIVE
SSOP
DB
24
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2224A
Samples
TPS2224APWP
ACTIVE
HTSSOP
PWP
24
60
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
TPS2224A
Samples
TPS2224APWPR
ACTIVE
HTSSOP
PWP
24
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
TPS2224A
Samples
TPS2226ADB
ACTIVE
SSOP
DB
30
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2226A
Samples
TPS2226ADBR
ACTIVE
SSOP
DB
30
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
TPS2226A
Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of