SLVSCE3A June   2014  – June 2014 TPS82740A , TPS82740B

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1. 3.1 Typical Application
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
    2. Table 1. Output Voltage Setting TPS82740A
    3. Table 2. Output Voltage Setting TPS82740B
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 DCS-Control
      2. 9.3.2 LOAD Switch
      3. 9.3.3 Output Voltage Selection (VSEL1, VSEL2, VSEL3)
      4. 9.3.4 Output Discharge Function (VOUT and LOAD)
      5. 9.3.5 Internal Current Limit
      6. 9.3.6 CTRL / DVS (Dynamic Voltage Scaling TPS62741)
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable / Shutdown
      2. 9.4.2 Soft Start
      3. 9.4.3 POWER GOOD OUTPUT (PG)
      4. 9.4.4 Automatic Transition into 100% Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Input Capacitor Selection
          1. 10.2.2.1.1 Input Buffer Capacitor Selection
        2. 10.2.2.2 Output Capacitor Selection
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Surface Mount Information
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Links
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information
    1. 14.1 Tape and Reel Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • SIP|9
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5 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.)