SLVS749C November   2008  – January 2015 TPS22921 , TPS22922

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Typical Application
  5. 5 Revision History
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Electrical Characteristics
    6. 8.6  Switching Characteristics: VIN = 0.9 V
    7. 8.7  Switching Characteristics: VIN = 1 V
    8. 8.8  Switching Characteristics: VIN = 1.1 V
    9. 8.9  Switching Characteristics: VIN = 1.2 V
    10. 8.10 Switching Characteristics: VIN = 1.8 V
    11. 8.11 Switching Characteristics: VIN = 2.5 V
    12. 8.12 Switching Characteristics: VIN = 3 V
    13. 8.13 Switching Characteristics: VIN = 3.6 V
    14. 8.14 Typical Characteristics
      1. 8.14.1 Typical DC Characteristics
      2. 8.14.2 Typical AC Characteristics (TPS22921)
      3. 8.14.3 Typical AC Characteristics (TPS22922)
      4. 8.14.4 Typical AC Characteristics (TPS22922B)
      5. 8.14.5 Typical AC Characteristics (TPS22921 and TPS22922)
      6. 8.14.6 Typical AC Characteristics (TPS22921)
      7. 8.14.7 Typical AC Characteristics (TPS22922)
      8. 8.14.8 Typical AC Characteristics (TPS22922B)
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 ON/OFF Control
      2. 10.3.2 Quick Output Discharge
    4. 10.4 Device Functional Modes
  11. 11Application and Implementation
    1. 11.1 Application Information
      1. 11.1.1 Input Capacitor (Optional)
      2. 11.1.2 Output Capacitor (Optional)
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Managing Inrush Current
        2. 11.2.2.2 VIN to VOUT Voltage Drop
      3. 11.2.3 Application Curve
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Related Links
    2. 14.2 Trademarks
    3. 14.3 Electrostatic Discharge Caution
    4. 14.4 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

8 Specifications

8.1 Absolute Maximum Ratings(1)

MIN MAX UNIT
VIN Input voltage –0.3 4 V
VOUT Output voltage VIN + 0.3 V
VON Input voltage –0.3 4 V
P Power dissipation at TA = 25°C 0.645 W
IMAX Maximum continuous switch current 2 A
TA Operating free-air temperature –40 85 °C
Tlead Maximum lead temperature (10-s soldering time) 300 °C
Tstg Storage temperature –65 150 °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.

8.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±3000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
Machine model (MM) ±300
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

8.3 Recommended Operating Conditions

MIN MAX UNIT
VIN Input voltage range 0.9 3.6 V
VOUT Output voltage range VIN V
VIH High-level input voltage, ON 0.85 3.6 V
VIL Low-level input voltage, ON 0.4 V
CIN Input capacitor 1(1) µF

8.4 Thermal Information

THERMAL METRIC(1) TPS22921, TPS22922, TPS22922B TPS22921 UNIT
YFP YZP YZT
6 PINS
RθJA Junction-to-ambient thermal resistance 125.1 131 120.7 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 1.4 1.3 2.1
RθJB Junction-to-board thermal resistance 26 22.6 26.4
ψJT Junction-to-top characterization parameter 0.3 5.2 3.7
ψJB Junction-to-board characterization parameter 26 22.6 26.4
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

8.5 Electrical Characteristics

VIN = 0.9 V to 3.6 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TA MIN TYP(1) MAX UNIT
IQ Quiescent current IOUT = 0 mA VIN = 1 V Full 30 120 nA
VIN = 1.8 V Full 78 235
VIN = 3.6 V Full 200 880
IIN(OFF) OFF-state supply current VON = GND,
OUT = Open		 VIN = 1 V Full 10 210 nA
VIN = 1.8 V Full 35 260
VIN = 3.6 V Full 120 700
IIN(LEAKAGE) OFF-state switch current VON = GND,
VOUT = 0 V		 VIN = 1 V Full 12 140 nA
VIN = 1.8 V Full 50 230
VIN = 3.6 V Full 130 610
rON ON-state resistance IOUT = –200 mA VIN = 3.6 V 25°C 14 45 mΩ
Full 50
VIN = 2.5 V 25°C 20 55
Full 60
VIN = 1.8 V 25°C 33 65
Full 75
VIN = 1.2 V 25°C 67 100
Full 120
VIN = 1.1 V 25°C 82 150
Full 160
VIN = 1 V 25°C 116 160
Full 170
rPD Output pulldown resistance VIN = 3.3 V, VON = 0 V, IOUT = 30 mA
(TPS22922 and TPS22922B only)		 25°C 65 120 Ω
ION ON input leakage current VON = 1.1 V to 3.6 V or GND Full 25 nA
(1) Typical values are at the specified VIN and TA = 25°C.

8.6 Switching Characteristics: VIN = 0.9 V

VIN = 0.9 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 121 121 638 μs
CL = 1 μF 160 160 712
CL = 3 μF 188 188 799
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 46 40 40 μs
CL = 1 μF 308 279 279
CL = 3 μF 975 807 807
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 60 60 462 μs
CL = 1 μF 85 85 465
CL = 3 μF 107 107 507
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 119 51 51 μs
CL = 1 μF 969 434 434
CL = 3 μF 3174 1264 1264

8.7 Switching Characteristics: VIN = 1 V

VIN = 1 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 105 105 549 μs
CL = 1 μF 136 136 613
CL = 3 μF 157 157 683
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 46 28 28 μs
CL = 1 μF 309 186 186
CL = 3 μF 983 511 511
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 51 51 386 μs
CL = 1 μF 78 78 388
CL = 3 μF 88 88 419
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 121 34 34 μs
CL = 1 μF 986 306 306
CL = 3 μF 3300 908 908

8.8 Switching Characteristics: VIN = 1.1 V

VIN = 1.1 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 91 93 484 μs
CL = 1 μF 118 118 540
CL = 3 μF 137 137 599
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 44 21 21 μs
CL = 1 μF 311 144 144
CL = 3 μF 99 383 383
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 46 46 335 μs
CL = 1 μF 60 60 336
CL = 3 μF 76 76 363
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 122 29 29 μs
CL = 1 μF 1000 224 224
CL = 3 μF 3300 732 732

8.9 Switching Characteristics: VIN = 1.2 V

VIN = 1.2 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 83 83 435 μs
CL = 1 μF 103 103 485
CL = 3 μF 122 122 536
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 44 17 17 μs
CL = 1 μF 312 117 117
CL = 3 μF 1000 319 319
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 41 41 301 μs
CL = 1 μF 54 54 302
CL = 3 μF 67 67 325
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 123 25 25 μs
CL = 1 μF 1000 214 214
CL = 3 μF 3400 632 632

8.10 Switching Characteristics: VIN = 1.8 V

VIN = 1.8 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 54 54 282 μs
CL = 1 μF 67 67 314
CL = 3 μF 78 78 344
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 41 10 10 μs
CL = 1 μF 312 67 67
CL = 3 μF 1000 181 181
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 30 30 200 μs
CL = 1 μF 37 37 202
CL = 3 μF 47 47 219
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 121 17 17 μs
CL = 1 μF 1000 158 158
CL = 3 μF 3450 461 461

8.11 Switching Characteristics: VIN = 2.5 V

VIN = 2.5 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 40 40 211 μs
CL = 1 μF 50 50 233
CL = 3 μF 59 59 256
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 41 10 10 μs
CL = 1 μF 316 56 56
CL = 3 μF 1000 153 153
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 23 23 164 μs
CL = 1 μF 29 29 165
CL = 3 μF 38 38 177
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 122 16 16 μs
CL = 1 μF 1086 147 147
CL = 3 μF 3600 430 430

8.12 Switching Characteristics: VIN = 3 V

VIN = 3 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 30 30 182 μs
CL = 1 μF 38 38 201
CL = 3 μF 45 45 221
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 40 10 10 μs
CL = 1 μF 353 51 51
CL = 3 μF 1036 139 139
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 20 20 149 μs
CL = 1 μF 25 25 150
CL = 3 μF 33 33 161
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 104 15 15 μs
CL = 1 μF 1030 143 143
CL = 3 μF 3230 419 419

8.13 Switching Characteristics: VIN = 3.6 V

VIN = 3.6 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TPS22921 TPS22922 TPS22922B UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
tON Turn-ON time RL = 500 Ω CL = 0.1 μF 30 30 159 μs
CL = 1 μF 38 38 175
CL = 3 μF 45 45 193
tOFF Turn-OFF time RL = 500 Ω CL = 0.1 μF 42 10 10 μs
CL = 1 μF 310 51 51
CL = 3 μF 988 139 139
tr VOUT rise time RL = 500 Ω CL = 0.1 μF 20 20 137 μs
CL = 1 μF 25 25 138
CL = 3 μF 33 33 148
tf VOUT fall time RL = 500 Ω CL = 0.1 μF 120 15 15 μs
CL = 1 μF 1100 143 143
CL = 3 μF 3600 419 419

8.14 Typical Characteristics

8.14.1 Typical DC Characteristics

typ01_lvs749.gifFigure 1. rON vs VIN
typ02a_lvs749.gifFigure 3. Voltage Drop vs Load Current
typ04_lvs749.gifFigure 5. Quiescent Current vs Temperature
(VIN = 3.3 V, IOUT = 0 mA)
typ06_lvs749.gifFigure 7. Leakage Current vs VIN
typ08_lvs749.gifFigure 9. IIN (OFF) vs Temperature (VIN = 3.3 V)
typ02_lvs729.gifFigure 2. rON vs Temperature (VIN = 3.3 V)
typ03_lvs749.gifFigure 4. Quiescent Current vs VIN (VON = VIN)
typ05_lvs749.gifFigure 6. IIN Leakage Current vs Temperature (VIN = 3.3 V)
typ07_lvs749.gifFigure 8. IIN (OFF) vs VIN (VON = 0 V)
typ09_lvs749.gifFigure 10. ON-Input Threshold

8.14.2 Typical AC Characteristics (TPS22921)

tonoff_ta_tps21_lvs749.gifFigure 11. tON/tOFF vs Temperature (VIN = 3.3 V)
trf_ta_tps221_lvs749.gifFigure 12. trise/tfall vs Temperature (VIN = 3.3 V)

8.14.3 Typical AC Characteristics (TPS22922)

typ10_lvs749.gifFigure 13. tON/tOFF vs Temperature (VIN = 3.3 V)
typ11_lvs749.gifFigure 14. trise/tfall vs Temperature (VIN = 3.3 V)

8.14.4 Typical AC Characteristics (TPS22922B)

tonoff_ta_tps22b_lvs749.gifFigure 15. tON/tOFF vs Temperature (VIN = 3.3 V)
trf_ta_tps222b_lvs749.gifFigure 16. trise/tfall vs Temperature (VIN = 3.3 V)

8.14.5 Typical AC Characteristics (TPS22921 and TPS22922)

g_ton02_lvs749.gifFigure 17. tON Response
g_ton04_lvs749.gifFigure 19. tON Response
g_ton06_lvs749.gifFigure 21. tON Response
g_ton03_lvs749.gifFigure 18. tON Response
g_ton05_lvs749.gifFigure 20. tON Response

8.14.6 Typical AC Characteristics (TPS22921)

g_tofftps2101_lvs749.gifFigure 22. tOFF Response
g_tofftps2103_lvs749.gifFigure 24. tOFF Response
g_tofftps2105_lvs749.gifFigure 26. tOFF Response
g_tofftps2107_lvs749.gifFigure 28. tOFF Response
g_tofftps2102_lvs749.gifFigure 23. tOFF Response
g_tofftps2104_lvs749.gifFigure 25. tOFF Response
g_tofftps2106_lvs749.gifFigure 27. tOFF Response
g_tofftps2108_lvs749.gifFigure 29. tOFF Response

8.14.7 Typical AC Characteristics (TPS22922)

g_toff01_lvs749.gifFigure 30. tOFF Response
g_toff03_lvs749.gifFigure 32. tOFF Response
g_toff05_lvs749.gifFigure 34. tOFF Response
g_toff02_lvs749.gifFigure 31. tOFF Response
g_toff04_lvs749.gifFigure 33. tOFF Response
g_toff06_lvs749.gifFigure 35. tOFF Response

8.14.8 Typical AC Characteristics (TPS22922B)

g_tontps22b01_lvs749.gifFigure 36. tON Response
g_tontps22b03_lvs749.gifFigure 38. tON Response
g_tontps22b05_lvs749.gifFigure 40. tON Response
g_tontps22b07_lvs749.gifFigure 42. tON Response
g_tofftps22b01_lvs749.gifFigure 44. tOFF Response
g_tofftps22b03_lvs749.gifFigure 46. tOFF Response
g_tofftps22b05_lvs749.gifFigure 48. tOFF Response
g_tontps22b07_lvs749.gifFigure 50. tON Response
g_tontps22b02_lvs749.gifFigure 37. tON Response
g_tontps22b04_lvs749.gifFigure 39. tON Response
g_tontps22b06_lvs749.gifFigure 41. tON Response
g_tontps22b08_lvs749.gifFigure 43. tON Response
g_tofftps22b02_lvs749.gifFigure 45. tOFF Response
g_tofftps22b04_lvs749.gifFigure 47. tOFF Response
g_tofftps22b06_lvs749.gifFigure 49. tOFF Response
g_tofftps22b08_lvs749.gifFigure 51. tOFF Response