SNVSAF7C August   2016  – October 2025 LM27762

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Undervoltage Lockout
      2. 6.3.2 Input Current Limit
      3. 6.3.3 PFM Operation
      4. 6.3.4 Output Discharge
      5. 6.3.5 Power-Good Output (PGOOD)
      6. 6.3.6 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Enable Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Positive Low-Dropout Linear Regulator and OUT+ Voltage Setting
        2. 7.2.2.2 Charge-Pump Voltage Inverter
        3. 7.2.2.3 Negative Low-Dropout Linear Regulator and OUT– Voltage Setting
        4. 7.2.2.4 External Capacitor Selection
          1. 7.2.2.4.1 Charge-Pump Output Capacitor
          2. 7.2.2.4.2 Input Capacitor
          3. 7.2.2.4.3 Flying Capacitor
          4. 7.2.2.4.4 LDO Output Capacitor
        5. 7.2.2.5 Power Dissipation
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.6 Typical Characteristics

LM27762 Output Voltage Ripple vs Output Current
VIN = 3.7 VVOUT = ±3 V
Figure 5-1 Output Voltage Ripple vs Output Current
LM27762 LDO Dropout Voltage vs Output Current
VOUT = ± 3.3 V
Figure 5-3 LDO Dropout Voltage vs Output Current
LM27762 Line Regulation for OUT-
VOUT = –3.3 V
Figure 5-5 Line Regulation for OUT-
LM27762 Load Regulation for OUT-
VIN = 4.3 VVOUT = –3.3 V
Figure 5-7 Load Regulation for OUT-
LM27762 Efficiency for OUT–
VIN = 5.5 V
Figure 5-9 Efficiency for OUT–
LM27762 Shutdown
Figure 5-11 Shutdown
LM27762 Output Voltage Ripple vs Input Voltage
VOUT = ±3 VIOUT = ±100 mA
Figure 5-2 Output Voltage Ripple vs Input Voltage
LM27762 Charge Pump Output Resistance vs Output Current
VIN = 5.5 V
Figure 5-4 Charge Pump Output Resistance vs Output Current
LM27762 Line Regulation for OUT+
VOUT = 3.3 V
Figure 5-6 Line Regulation for OUT+
LM27762 Load Regulation for OUT+
VIN = 4.3 VVOUT = 3.3 V
Figure 5-8 Load Regulation for OUT+
LM27762 Start-Up
Figure 5-10 Start-Up