ZHCSCJ5A June   2014  – June 2014 TPS82740A , TPS82740B

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 典型应用
  5. 5 修订历史记录
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  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 DCS-Control
      2. 10.3.2 LOAD Switch
      3. 10.3.3 Output Voltage Selection (VSEL1, VSEL2, VSEL3)
      4. 10.3.4 Output Discharge Function (VOUT and LOAD)
      5. 10.3.5 Internal Current Limit
      6. 10.3.6 CTRL / DVS (Dynamic Voltage Scaling TPS62741)
    4. 10.4 Device Functional Modes
      1. 10.4.1 Enable / Shutdown
      2. 10.4.2 Softstart
      3. 10.4.3 POWER GOOD OUTPUT (PG)
      4. 10.4.4 Automatic Transition into 100% Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Input Capacitor Selection
          1. 11.2.2.1.1 Input Buffer Capacitor Selection
        2. 11.2.2.2 Output Capacitor Selection
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
    3. 13.3 Surface Mount Information
  14. 14器件和文档支持
    1. 14.1 文档支持
      1. 14.1.1 相关链接
    2. 14.2 商标
    3. 14.3 静电放电警告
    4. 14.4 术语表
  15. 15机械封装和可订购信息

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • SIP|9
散热焊盘机械数据 (封装 | 引脚)
订购信息

8 Specifications

8.1 Absolute Maximum Ratings(1)

Over operating free-air temperature range (unless otherwise noted)
VALUE UNIT
MIN MAX
Pin voltage (2) VIN –0.3 6 V
EN, CTRL, VSEL1, VSEL2, VSEL3 –0.3 VIN +0.3V V
VOUT, LOAD –0.3 3.7 V
Operating ambient temperature range, TA(3) -40 85 °C
Operating junction temperature TJ -40 125 °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 voltage values are with respect to network ground terminal GND.
(3) In applications where ambient temperature (TA) constantly stays above 70°C, the product life time might degrade. MLCC capacitor reliability and lifetime is depending on temperature and applied voltage conditions. At higher temperatures, MLCC capacitors are subject to stronger stress. The most critical parameter is the Insulation Resistance (IR) resulting in leakage current.

8.2 Handling Ratings

MIN MAX UNIT
Tstg Storage temperature range –55 125 °C
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) 0 2000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) 0 1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. The human body model is a 100-pF capacitor discharged through a 1.5-kΩ resistor into each pin.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

8.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VIN Supply voltage VIN 2.2 5.5 V
IOUT + ILOAD Device output current (sum of IOUT and ILOAD) VOUTnom + 0.7V ≤ VIN ≤ 5.5V 200 mA
VOUTnom ≤ VIN ≤ VOUTnom +0.7V 100
ILOAD Load current (current from LOAD pin) 100
COUT Additional output capacitance connected to VOUT pin (not including LOAD pin) 10 µF
CLOAD Capacitance connected to LOAD pin 10
TJ Operating junction temperature range -40 90 °C
TA Operating ambient temperature range -40 85

8.4 Thermal Information

THERMAL METRIC(1) TPS82740 UNIT
µSIP
9 PINS
RθJA Junction-to-ambient thermal resistance 83 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 53
RθJB Junction-to-board thermal resistance -
ψJT Junction-to-top characterization parameter -
ψJB Junction-to-board characterization parameter -
RθJC(bot) Junction-to-case (bottom) thermal resistance -
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

8.5 Electrical Characteristics

VIN = 3.6V, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
VIN Input voltage range 2.2 5.5 V
IQ Operating quiescent current EN = VIN, CTRL = GND, IOUT = 0µA, VOUT = 1.8V / 2.6V, device not switching 360 2300 nA
EN = VIN, IOUT = 0mA, CTRL = GND, VOUT = 1.8V device switching 460
EN = VIN, IOUT = 0mA, CTRL = GND, VOUT = 2.6V, device switching 500
EN = VIN, IOUT = 0mA., CTRL = VIN, VOUT = 1.8V, device not switching 12.5 µA
EN = VIN, IOUT = 0mA., CTRL = VIN, VOUT = 2.6V, device not switching 13.5
ISD Shutdown current EN = GND, shutdown current into VIN 70 nA
EN = GND, shutdown current into VIN, TA = 60°C 150
VTH_UVLO+ Undervoltage lockout threshold Rising VIN 2.075 2.15 V
VTH_UVLO- Falling VIN 1.925 2
INPUTS EN, CTRL, VSEL 1-3
VIH TH High level input threshold 2.2V ≤ VIN ≤ 5.5V 1.1 V
VIL TH Low level input threshold 2.2V ≤ VIN ≤ 5.5V 0.4 V
IIN Input bias Current TA = 25°C 10 nA
TA = –40°C to 85°C 25
POWER SWITCHES
ILIMF High side MOSFET switch current limit 2.2V ≤ VIN ≤ 5.5V 430 mA
Low side MOSFET switch current limit 430 mA
OUTPUT DISCHARGE SWITCH (VOUT)
RDSCH_VOUT MOSFET on-resistance EN = GND, IOUT = -10mA into VOUT pin 30 65 Ω
IIN_VOUT Bias current into VOUT pin EN = VIN, VOUT = 2V / 2.8V, CTRL = GND TA = 25°C 40 660 nA
TA = –40°C to 85°C 1570
LOAD OUTPUT (LOAD)
RLOAD High side MOSFET on-resistance ILOAD = 50mA, CTRL = VIN, VOUT = 2.0V / 2.8V, 2.2 V ≤ VIN ≤ 5.5V 0.6 1.25 Ω
RDSCH_LOAD Low side MOSFET on-resistance CTRL = GND, 2.2V ≤ VIN ≤ 5.5V, ILOAD = - 10mA 30 65
tRise_LOAD VLOAD rise time Starting with CTRL low to high transition, time to ramp VLOAD from 0V to 95%, VOUT = 1.8V / 2.6V, 2.2V ≤ VIN ≤ 5.5V, ILOAD = 1mA, TA = 25°C 315 800 µs
AUTO 100% MODE TRANSITION
VTH_100+ Auto 100% Mode exit detection threshold (1) Rising VIN,100% Mode is left with VIN = VOUT + VTH_100+ , max value at TJ = 85°C 170 250 340 mV
VTH_100- Auto 100% Mode enter detection threshold (1) Falling VIN, 100% Mode is entered with VIN = VOUT + VTH_100-, max value at TJ = 85°C 110 200 280
OUTPUT
tStartup_delay Regulator start up delay time From transition EN = low to high until device starts switching 10 25 ms
tSoftstart Softstart time with reduced switch current limit 2.2V ≤ VIN ≤ 5.5V, EN = VIN 400 1200 µs
ILIM_softstart High side MOSFET switch current limit Reduced switch current limit during softstart 80 150 200 mA
Low side MOSFET switch current limit 150
VVOUT Output voltage range Output voltages are selected with pins VSEL1, VSEL2, VSEL3 TPS82740A 1.8 2.5 V
TPS82740B 2.6 3.3
Output voltage accuracy IOUT = 10mA, VOUT = 1.8V / 2.6V -2.5 0 2.5 %
IOUT = 100mA, VOUT = 1.8V / 2.6V –2 0 2
DC output voltage load regulation VOUT = 1.8V / 2.6V, CTRL = VIN 0.001 %/mA
DC output voltage line regulation VOUT = 1.8V / 2.6V, CTRL = VIN, IOUT = 10 mA, 2.5V ≤ VIN ≤ 5.5V 0 %/V
(1) VIN is compared to the programmed output voltage (VOUT). When VIN–VOUT falls below VTH_100- , the device enters 100% Mode by turning the high side MOSFET on. 100% Mode is exited when VIN–VOUT exceeds VTH_100+ and the device starts switching. The hysteresis for the 100% Mode detection threshold VTH_100+ - VTH_100- is always positive and 50 mV(typ.)

8.6 Typical Characteristics

TABLE OF GRAPHS FIGURE
η Efficiency vs Output Current Figure 3, Figure 4, Figure 5, Figure 6
η Efficiency vs Input Voltage Figure 7, Figure 8, Figure 9, Figure 10
VOUT Output voltage vs Output curent Figure 11, Figure 12, Figure 13, Figure 14
IQ Operating quiescent current vs Input voltage Figure 1
ISD Shutdown current vs Input voltage Figure 2
Automatic Transition into 100% Mode Figure 18, Figure 19, Figure 20
FSW Switching frequency vs Output current Figure 15, Figure 16, Figure 17
Line and Load Transient Performance Figure 21, Figure 22, Figure 23, Figure 24, Figure 25, Figure 26, Figure 27, Figure 28, Figure 29, Figure 30
AC load regulation performance Figure 31, Figure 32
LOAD LOAD Output Behavior Figure 33, Figure 34, Figure 35
Input Voltage Ramp up / down Figure 36, Figure 37, Figure 38, Figure 39
TPS82740A TPS82740B D019_SLVSCE3_TPS82740.gif
EN = VIN
CTRL = GND
Device not switching
Figure 1. TPS82740 Quiescent Current IQ
TPS82740A TPS82740B D008_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 3. TPS82740A Efficiency VOUT = 1.8V
TPS82740A TPS82740B D001_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 5. TPS82740B Efficiency VOUT = 2.6V
TPS82740A TPS82740B D010_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 7. TPS82740A Efficiency VOUT = 1.8V
TPS82740A TPS82740B D004_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 9. TPS82740B Efficiency VOUT = 2.6V
TPS82740A TPS82740B D012_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 11. TPS82740A Output voltage VOUT = 1.8V
TPS82740A TPS82740B D014_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 13. TPS82740B Output voltage VOUT = 2.6V
TPS82740A TPS82740B D016_SLVSCE3_TPS82740.gif
Figure 15. TPS82740A Switching frequency VOUT = 1.8V
TPS82740A TPS82740B D018_SLVSCE3_TPS82740.gif
Figure 17. TPS82740B switching frequency VOUT = 3.0V
TPS82740A TPS82740B D006_SLVSCE3_TPS82740.gif
Figure 19. TPS82740A 100% Mode Transition VOUT = 2.5V
TPS82740A TPS82740B 1- 50uA to 10mA Vout 1.8V.gif
Figure 21. TPS82740A Load Transient Response VOUT = 1.8V
TPS82740A TPS82740B 3- 50uA to 10mA Vout 2.6V.gif
Figure 23. TPS82740B Load Transient Response VOUT = 2.6V
TPS82740A TPS82740B 5 - 0mA to 100mA Vout 1.8V.gif
Figure 25. TPS82740A Load Transient Response VOUT = 1.8V
TPS82740A TPS82740B 7- 0mA to 100mA Vout 2.6V.gif
Figure 27. TPS82740B Load Transient Response VOUT = 2.6V
TPS82740A TPS82740B 9- line 10mA 2V1.gif
Figure 29. TPS82740A Line Transient Response
IOUT = 10mA
TPS82740A TPS82740B 11- 50uA to 200mA sweep Vout 1.8V.gif
Figure 31. TPS82740A AC Load Sweep VOUT = 1.8V
TPS82740A TPS82740B 13- Loadstep at LOAD 0 to 50mA 1.8V.gif
Figure 33. TPS82740A Load Step at LOAD Output
TPS82740A TPS82740B 15- Load output on off 2.6V.gif
Figure 35. TPS82740B Load Output ON / OFF
TPS82740A TPS82740B 21- input voltage ramp 2.6V.gif
Figure 37. TPS82740B Input Voltage Ramp Up / Down
TPS82740A TPS82740B 23- Enter - Exit 100 pro mode.gif
Figure 39. TPS82740B Enter / Exit 100% Mode Operation
TPS82740A TPS82740B D020_SLVSCE3_TPS82740.gif
EN = GND
Figure 2. TPS82740 Shutdown current ISD
TPS82740A TPS82740B D009_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 4. TPS82740A Efficiency VOUT = 2.1V
TPS82740A TPS82740B D002_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 6. TPS82740B Efficiency VOUT = 3.3V
TPS82740A TPS82740B D011_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 8. TPS82740A Efficiency VOUT = 2.1V
TPS82740A TPS82740B D003_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 10. TPS82740B Efficiency VOUT = 3.3V
TPS82740A TPS82740B D013_SLVSCE3_TPS82740.gif
Figure 12. TPS82740A Output voltage VOUT = 2.1V
TPS82740A TPS82740B D015_SLVSCE3_TPS82740.gif
CTRL = GND
Figure 14. TPS82740B Output voltage VOUT = 3.3V
TPS82740A TPS82740B D017_SLVSCE3_TPS82740.gif
Figure 16. TPS82740A Switching frequency VOUT = 2.1V
TPS82740A TPS82740B D005_SLVSCE3_TPS82740.gif
Figure 18. TPS82740A 100% Mode Transition VOUT = 2.1V
TPS82740A TPS82740B D007_SLVSCE3_TPS82740.gif
Figure 20. TPS82740B 100% Mode Transition VOUT = 3.3V
TPS82740A TPS82740B 2- 0.5mA to 150mA Vout 1.8V CTRL=VIN.gif
Figure 22. TPS82740A Load Transient Response VOUT = 1.8V
TPS82740A TPS82740B 4- 0.5mA to 150mA Vout 2.6V CTRL=VIN.gif
Figure 24. TPS82740B Load Transient Response VOUT = 2.6V
TPS82740A TPS82740B 6- 0mA to 100mA Vout 1.8V CTRL H.gif
Figure 26. TPS82740A Load Transient Response VOUT = 1.8V
TPS82740A TPS82740B 8- 0mA to 100mA Vout 2.6V CTRL H.gif
Figure 28. TPS82740B Load Transient response VOUT = 2.6V
TPS82740A TPS82740B 10- line 100mA 2V1.gif
Figure 30. TPS82740A Line Transient Response
IOUT = 100mA
TPS82740A TPS82740B 12- 50uA to 200mA sweep Vout 2.6V.gif
Figure 32. TPS82740B AC Load Sweep VOUT = 2.6V
TPS82740A TPS82740B 14- Loadstep at LOAD 0 to 50mA 2.6V.gif
Figure 34. TPS82740B Load Step at LOAD Output
TPS82740A TPS82740B 20- input voltage ramp 1.8V.gif
Figure 36. TPS82740A Input Voltage Ramp Up / Down
TPS82740A TPS82740B 22- input voltage ramp 3.3V.gif
Figure 38. TPS82740B Input Voltage Ramp Up / Down
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