SLVS915C February   2010  – July 2015 TPS73801

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adjustable Operation
      2. 7.3.2 Fixed Operation
      3. 7.3.3 Overload Recovery
      4. 7.3.4 Output Voltage Noise
      5. 7.3.5 Protection Features
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Capacitance and Transient Response
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
      1. 10.3.1 Calculating Junction Temperature
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
VIN Input voltage IN –20 20 V
OUT –20 20 V
Input-to-output differential (2) –20 20 V
FB –7 7 V
EN –20 20 V
tshort Output short-circuit duration Indefinite
TJ Operating virtual-junction temperature –40 125 °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.
(2) Absolute maximum input-to-output differential voltage cannot be achieved with all combinations of rated IN pin and OUT pin voltages. With the IN pin at 20 V, the OUT pin may not be pulled below 0 V. The total measured voltage from IN to OUT cannot exceed ±20 V.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1) 2000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins (2) 1000
(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.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VIN Input voltage range VOUT + VDO 20 V
VIH EN high-level input voltage 2 20 V
VIL EN low-level input voltage 0.25 V
TJ Recommended operating junction temperature range –40 125 °C

6.4 Thermal Information

THERMAL METRIC (1) TPS73801 UNIT
DCQ (SOT-223)
6 PINS
RθJA Junction-to-ambient thermal resistance 50.5 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 31.1 °C/W
RθJB Junction-to-board thermal resistance 5.1 °C/W
ψJT Junction-to-top characterization parameter 1.0 °C/W
ψJB Junction-to-board characterization parameter 5.0 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance — °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

Over operating temperature range TJ = –40°C to 125°C (unless otherwise noted)(1)
PARAMETER TEST CONDITIONS TJ MIN TYP (10) MAX UNIT
VIN Input voltage (2)(3) 25°C 2.2 1.9 20 V
VFB FB pin voltage (2)(4) TPS73801 VIN = 2.21 V, ILOAD = 1 mA 25°C 1.192 1.21 1.228 V
VIN = 2.5 V to 20 V,
ILOAD = 1 mA to 1.0A		 Full range 1.174 1.21 1.246
Line regulation TPS73801 (2) ΔVIN = 2.21 V to 20 V,
ILOAD = 1 mA		 Full range 1.5 5 mV
Load regulation TPS73801 (2) VIN = 2.5 V,
ΔILOAD = 1 mA to 1.0 A		 25°C 2 8 mV
Full range 18
VDO Dropout voltage (3)(6)(5)
VIN = VOUT(NOMINAL)		 ILOAD = 1 mA 25°C 0.02 0.06 V
Full range 0.10
ILOAD = 100 mA 25°C 0.1 0.17
Full range 0.22
ILOAD = 500 mA 25°C 0.19 0.27
Full range 0.35
ILOAD = 1.0 A 25°C 0.24 0.30
Full range 0.40
IGND GND pin current (5)(7)
VIN = VOUT(NOMINAL) + 1		 ILOAD = 0 mA Full range 1 1.5 mA
ILOAD = 1 mA Full range 1.1 1.6
ILOAD = 100 mA Full range 3.8 5.5
ILOAD = 500 mA Full range 15 25
ILOAD = 1.0 A Full range 35 80
VN Output voltage noise COUT = 10 µF, ILOAD = 1.0 A,
BW = 10 Hz to 100 kHz		 25°C 45 µVRMS
IFB FB pin bias current (2)(8)   25°C 3 10 µA
VEN Shutdown threshold VOUT = OFF to ON Full range 0.9 2 V
VOUT = ON to OFF Full range 0.25 0.75
IEN EN pin current VEN = 0 V 25°C 0.01 1 µA
VEN = 20 V 25°C 3 30
Quiescent current in shutdown VIN = 6 V, VEN = 0 V 25°C 0.01 1 µA
PSRR Ripple rejection VIN – VOUT = 1.5 V (avg), VRIPPLE = 0.5 VP-P,
fRIPPLE = 120 Hz, ILOAD = 0.75 A		 25°C 55 63 dB
ICL Current limit VIN = 7 V, VOUT = 0 V 25°C 2 A
VIN = VOUT(NOMINAL) + 1 Full range 1.6
IREV Input reverse leakage current VIN = –20 V, VOUT = 0 V Full range 1 mA
IRO Reverse output current (9) TPS73801 VOUT = 1.21 V, VIN < 1.21 V 25°C 300 600 µA
(1) The TPS73801 regulators are tested and specified under pulse load conditions such that TJ is approximately equal to TA. The TPS73801 is fully tested at TA = 25°C. Performance at –40°C and 125°C is specified by design, characterization, and correlation with statistical process controls.
(2) The TPS73801 is tested and specified for these conditions with the FB pin connected to the OUT pin.
(3) Dropout voltages are limited by the minimum input voltage specification under some output voltage/load conditions.
(4) Operating conditions are limited by maximum junction temperature. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited.
(5) To satisfy requirements for minimum input voltage, the TPS73801 is tested and specified for these conditions with an external resistor divider (two 4.12-kΩ resistors) for an output voltage of 2.4 V. The external resistor divider adds a 300-mA DC load on the output.
(6) Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout, the output voltage is equal to: VIN – VDROPOUT.
(7) GND pin current is tested with VIN = (VOUT(NOMINAL) + 1 V) and a current source load. The GND pin current decreases at higher input voltages.
(8) FB pin bias current flows into the FB pin.
(9) Reverse output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current flows into the OUT pin and out the GND pin.
(10) Typical values represent the likely parametric nominal values determined at the time of characterization. Typical values depend on the application and configuration and may vary over time. Typical values are not ensured on production material.

6.6 Typical Characteristics

TPS73801 vdo_iout_lvs820.gif
Figure 1. Dropout Voltage vs Output Current
TPS73801 iq_temp_lvs915.gif
VIN = 6 V IOUT = 0 A TPS73801
VEN = VIN
Figure 3. Quiescent Current vs Temperature
TPS73801 iq_vin_adj_lvs915.gif
TJ = 25 °C ROUT = 4.3 kΩ TPS73801
VEN = VIN
Figure 5. Quiescent Current vs Input Voltage
TPS73801 igdn_vin_il300_100_10_lvs915.gif
TJ = 25 °C VOUT = 1.21 V TPS73801
VEN = VIN
Figure 7. Ground Current vs Input Voltage
TPS73801 typchar1_slvs915.gif
VEN = 0 V
Figure 9. EN Input Current vs Temperature
TPS73801 shdn_thresh_off_on_lvs915.gif
IOUT = 1 mA
Figure 11. EN Threshold (Off to On) vs Temperature
TPS73801 iadjbias_temp_lvs915.gif
Figure 13. Fb Bias Current vs Temperature
TPS73801 current_lim_vin7v_lvs915.gif
VIN = 7 V VOUT = 0 V
Figure 15. Current Limit vs Temperature
TPS73801 irevout_temp_lvs915.gif
VIN = 0 V
Figure 17. Reverse Output Current vs Temperature
TPS73801 load_regulation_lvs915.gif
IOUT = 1 A
Figure 19. Load Regulation vs Temperature
TPS73801 load_trans_resp_il10_500_lvs915.gif
VIN = 4.3 V CIN = 10 µF COUT = 10 µF (ceramic)
Figure 21. Load Transient Response
TPS73801 line_trans_resp_lvs915.gif
IOUT = 1.5 A CIN = 10 µF
COUT = 10 µF (ceramic)
Figure 23. Line Transient Response
TPS73801 vdo_temp_lvs820.gif
Figure 2. Dropout Voltage vs Temperature
TPS73801 vout_temp_adj_lvs915.gif
VIN = 6 V IOUT = 1 mA TPS73801
Figure 4. Output Voltage vs Temperature
TPS73801 igdn_vin_il1p5_1_p5_lvs915.gif
TJ = 25 °C VOUT = 1.21 V TPS73801
VEN = VIN
Figure 6. Ground Current vs Input Voltage
TPS73801 ignd_iout_lvs915.gif
VIN = VOUT(nom) + 1
Figure 8. Ground Current vs Output Current
TPS73801 ishdn_vshdn_lvs915.gif
Figure 10. EN Input Current vs EN Input Voltage
TPS73801 shdn_thresh_on_off_lvs915.gif
IOUT = 1 mA
Figure 12. EN Threshold (On to Off) vs Temperature
TPS73801 current_lim_dvo100mv_lvs915.gif
ΔVOUT = 100 mV
Figure 14. Current Limit vs Input/Output Differential Voltage
TPS73801 irevout_vout_lvs915.gif
TJ = 25 °C VIN = 0 V
Current flows into OUT pin
Figure 16. Reverse Output Current vs Output Voltage
TPS73801 ripple_rejection_lvs915.gif
VIN = 2.7 V VRIPPLE = 0.05 VPP IOUT = 750 mA
CIN = 0 COUT = 10 µF (ceramic) TA = 25 °C
Figure 18. Ripple Rejection vs Frequency
TPS73801 out_noise_spec_dens_lvs915.gif
COUT = 10 µF (ceramic) IOUT = 1 A
Figure 20. Output Noise Voltage vs Frequency
TPS73801 load_trans_resp_il1p5_50_lvs915.gif
VIN = 4.3 V CIN = 10 µF COUT = 10 µF (ceramic)
Figure 22. Load Transient Response
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