SNVS469F October   2006  – December 2015 LP5952

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  Electrical Characteristics: Quiescent Currents
    7. 6.7  Electrical Characteristics: Shutdown Currents
    8. 6.8  Electrical Characteristics: Enable Control
    9. 6.9  Electrical Characteristics: Thermal Protection
    10. 6.10 Electrical Characteristics: Transient Characteristics
    11. 6.11 Input and Output Capacitors (Recommended)
    12. 6.12 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 Dual-Rail Supply
      2. 7.3.2 No-Load Stability
      3. 7.3.3 Fast Turnon
      4. 7.3.4 Short-Circuit Protection
      5. 7.3.5 Thermal-Overload Protection
      6. 7.3.6 Reverse Current Path
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Dual-Rail Linear Regulator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 External Capacitors
          2. 8.2.1.2.2 Input Capacitor
          3. 8.2.1.2.3 Output Capacitor
          4. 8.2.1.2.4 Capacitor Characteristics
          5. 8.2.1.2.5 Power Dissipation and Device Operation
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Additional Application Circuit
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Device Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)(2)(3)
MIN MAX UNIT
IN, BATT pins: Voltage to GND, VIN ≤ VBATT –0.2 V
BATT pin to IN pin 0.2 V
EN pin, voltage to GND –0.2 V
Continuous power dissipation(4) Internally limited
Junction Temperature (TJ-MAX ) 150 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to the potential at the GND pin.
(3) If Military or Aerospace specified devices are required, contact Texas Instruments Sales Office or Distributors for availability and specifications.
(4) Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ = 165°C (typical) and disengages at TJ = 145°C (typical).

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Machine model ±200
(1) JEDEC document JEP155 states that 500-V HBM 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
Input voltage, VIN 0.7 4.5 V
Input voltage, VBATT 2.5 5.5 V
Input voltage, VEN 0 VBATT V
Recommended load current 0 350 mA
Junction temperature, TJ –40 125 °C
Ambient temperature, TA(1) –40 85 °C
(1) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP = 125°C), the maximum power dissipation of the device in the application (PD-MAX), and the junction-to ambient thermal resistance of the part/package in the application (RθJA), as given by: TA-MAX = TJ-MAX-OP – (RθJA × PD-MAX).

6.4 Thermal Information

THERMAL METRIC(1) LP5952 UNIT
YZR (DSBGA) NKH (USON)
5 PINS 6 PINS
RθJA Junction-to-ambient thermal resistance(2) 181.0 181.6 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 0.9 93.1 °C/W
RθJB Junction-to-board thermal resistance 110.3 116.7 °C/W
ψJT Junction-to-top characterization parameter 7.4 8.0 °C/W
ψJB Junction-to-board characterization parameter 110.3 116.7 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
(2) Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists, special attention must be paid to thermal dissipation issues in board design.

6.5 Electrical Characteristics

Unless otherwise noted, typical values are for TA = 25°C, and minimum and maximum limits apply over the full operating temperature range: –40°C ≤ TJ ≤ +125°C; specifications apply to the Typical Application Circuit with VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V (whichever is higher), IOUT = 1 mA, CVIN = 1 µF, COUT = 2.2 µF, VEN = VBATT.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ΔVOUT / VOUT Output voltage tolerance VIN = VOUT(NOM) + 0.3 V, TA = 25°C –1.5 1.5
VIN = VOUT(NOM) + 0.3 V 2 2
ΔVOUT / ΔVIN Line regulation error VIN = VOUT(NOM) + 0.3 V to 4.5 V, VBATT = 4.5 V 1 0.3 1 mV/V
ΔVOUT / ΔVBATT VBATT = VOUT(NOM) + 1.5 V (≥ 2.5 V) to 5.5 V 2.2 0.5 2.2
ΔVOUT / ΔmA Load regulation error IOUT = 1 mA to 350 mA DSBGA package 30 15 30 µV/mA
IOUT = 1 mA to 350 mA USON package 60 43 60 µV/mA
ISC Output current (short circuit) VOUT = 0 V, VEN = VIN = VBATT = VOUT(NOM) + 1.5 V 350 500 mA
VDO_VBATT
(4)		 Output voltage dropout VBATT(5) IOUT = 350 mA, VIN = VOUT(NOM) + 0.3 V DSBGA package 1.07 1.5 V
IOUT = 350 mA
VIN = VOUT(NOM) + 0.3 V 		USON package 1.08 1.5 V
IOUT = 150 mA
VIN = VOUT(NOM) + 0.3 V 		DSBGA package 0.96 1.3 V
IOUT = 150 mA
VIN = VOUT(NOM) + 0.3 V 		USON package 0.97 1.3 V
VDO_VIN Output voltage dropout VIN IOUT = 350 mA
VBATT = VOUT(NOM) + 1.5 V or 2.5 V		 DSBGA package 88 200 mV
IOUT = 350 mA
VBATT = VOUT(NOM) + 1.5 V or 2.5 V 		USON package 128 250 mV
EN Output noise 10 Hz to 100 kHz 100 µVRMS
PSRR Power Supply Rejection Ratio Sine modulated VBATT, ƒ = 10 Hz 70 dB
Sine modulated VBATT, ƒ = 100 Hz 65
Sine modulated VBATT, ƒ = 1 kHz 45
PSRR Power Supply Rejection Ratio Sine modulated VIN, ƒ = 10 Hz 80 dB
Sine modulated VIN, ƒ = 100 Hz 90
Sine modulated VIN, ƒ = 1 kHz 95
Sine modulated VIN, ƒ = 10 kHz 85
Sine modulated VIN, ƒ = 100 kHz 64
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option
(4) This specification does not apply if the battery voltage VBATT needs to be decreased below the minimum operating limit of 2.5 V during this test.
(5) Dropout voltage is defined as the input to output voltage differential at which the output voltage falls to 100mV below the nominal output voltage.

6.6 Electrical Characteristics: Quiescent Currents

Unless otherwise noted, typical values are for TA = 25°C, and minimum and maximum limits apply over the full operating temperature range: –40°C ≤ TJ ≤ +125°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
IQ_VBATT Current into VBATT ILOAD = 0 mA to 350mA 50 100 µA
IQ_VIN Current into VIN ILOAD = 0 11 28 µA
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option

6.7 Electrical Characteristics: Shutdown Currents

Unless otherwise noted, typical values are for TA = 25°C, and minimum and maximum limits apply over the full operating temperature range: –40°C ≤ TJ ≤ +125°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
IQ_VBATT Current into VBATT VEN = 0 V 0.1 1 µA
IQ_VIN Current into VIN VEN = 0 V 0.1 1 µA
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option.

6.8 Electrical Characteristics: Enable Control

Unless otherwise noted, typical values are for TA = 25°C, and minimum and maximum limits apply over the full operating temperature range: –40°C ≤ TJ ≤ +125°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
IEN Maximum input current at EN input 0.01 1 µA
VIL Low input threshold (shutdown) 0.4 V
VIH High input threshold (enable) 1 V
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option.

6.9 Electrical Characteristics: Thermal Protection

Typical values are for TA = 25°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TSHDN Thermal-shutdown temperature 165 °C
ΔTSHDN Thermal-shutdown hysteresis 20 °C
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option.

6.10 Electrical Characteristics: Transient Characteristics

Unless otherwise noted, typical values are for TA = 25°C, and minimum and maximum limits apply over the full operating temperature range: –40°C ≤ TJ ≤ +125°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ΔVOUT Dynamic line transient response VIN VIN = VOUT(NOM) + 0.3 V to
VOUT(NOM) + 0.9 V; tr, tf = 10 µs		 ±1 mV
ΔVOUT Dynamic line transient response VBATT VBATT = VOUT(NOM) + 1.5 V to
VOUT(NOM) + 2.1 V; tr, tf = 10 µs		 ±15 mV
ΔVOUT Dynamic load transient response Pulsed load 0 ...300 mA, di/dt = 300 mA/1 µs
 DSBGA package ±15 mV
Pulsed load 0 ...300mA, di/dt = 300 mA/1 µs
 USON package –35/+15 mV
TSTARTUP Start-up time EN to 0.95 × VOUT 70 150 µs
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option.

6.11 Input and Output Capacitors (Recommended)

All values are for TA = 25°C.(1)(2)(3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
COUT Output capacitance Capacitance(4) 1.5 2.2 10 µF
ESR 3 300 mΩ
CVIN Input capacitance at VIN Capacitance(4), not needed in typical post-regulation application (see Figure 18) 0.47 1 µF
ESR 3 300 mΩ
(1) All voltages are with respect to the potential at the GND pin.
(2) Minimum and maximum limits are ensured by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = VOUT(NOM) + 1 V, VBATT= VOUT(NOM) + 1.5 V or 2.5 V, whichever is higher, TA = 25°C.
(3) VOUT(NOM) is the stated output voltage option.
(4) The capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be considered when selecting a suitable capacitor to ensure that the minimum value of capacitance is always met. Recommended capacitor type is X7R. However, dependent on application, X5R, Y5V, and Z5U can also be used. The shown minimum limit represents real minimum capacitance, including all tolerances and must be maintained over temperature and DC bias voltage (See Detailed Design Procedure in Application and Implementation.)

6.12 Typical Characteristics

Unless otherwise specified, TA = 25°C, CIN = 1-µF ceramic, COUT = 2.2-µF ceramic, VIN = VOUT(NOM) + 1 V, VBATT = VOUT(NOM) + 1.5 V, EN pin is tied to VBATT (DSBGA package).
LP5952 20208515.gif
Figure 1. Output Voltage Change vs Temperature
LP5952 20208517.gif
1.5-V Option
Figure 3. Inrush Current VIN
LP5952 20208519.gif
Figure 5. Ground Current vs VBATT / VIN
LP5952 20208520.gif
1.5-V Option
Figure 7. Power Supply Rejection Ratio VIN
LP5952 20208516.gif
ILOAD = 350 mA
Figure 2. Dropout VIN vs Temperature
LP5952 20208522.gif
Figure 4. Quiescent Current IQ_VBATT vs VBATT
LP5952 20208523.gif
Figure 6. Ground Current vs Load Current
LP5952 20208521.gif
1.5-V Option
Figure 8. Power Supply Rejection Ratio VBATT