ZHCSU10O March   2000  – December 2023 LP2981-N

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
  6. 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. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Enable
      2. 6.3.2 Dropout Voltage
      3. 6.3.3 Current Limit
      4. 6.3.4 Undervoltage Lockout (UVLO)
      5. 6.3.5 Thermal Shutdown
      6. 6.3.6 Output Pulldown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Functional Mode Comparison
      2. 6.4.2 Normal Operation
      3. 6.4.3 Dropout Operation
      4. 6.4.4 Disabled
  8. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
        1. 7.1.1.1 Recommended Capacitors for the Legacy Chip
        2. 7.1.1.2 Recommended Capacitors for the New Chip
      2. 7.1.2 Input and Output Capacitor Requirements
      3. 7.1.3 Estimating Junction Temperature
      4. 7.1.4 Power Dissipation (PD)
      5. 7.1.5 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 ON and OFF Input Operation
      3. 7.2.3 Application Curves
  9. Power Supply Recommendations
  10. Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Nomenclature
    2. 10.2 第三方产品免责声明
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Related Documentation
    5. 10.5 支持资源
    6. 10.6 Trademarks
    7. 10.7 静电放电警告
    8. 10.8 术语表
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

封装选项

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

Typical Characteristics

Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1 V, COUT = 4.7 μF, CIN = 1 μF all voltage options, ON/ OFF pin tied to VIN.

GUID-A185A334-ABB0-4C97-86FF-775B4DD865ED-low.png
VIN = 6 V, VOUT = 5 V
Figure 5-1 Output Voltage versus Temperature (Legacy Chip)
GUID-C59520EC-A35C-462A-93BC-3CB50AD79434-low.png
VIN = 4.0 V, VOUT = 3.0 V
Figure 5-3 Output Voltage versus Temperature (Legacy Chip)
GUID-B7B2723D-6236-4530-82A0-C0291A92A522-low.png
VOUT = 5.0 V
Figure 5-5 Output Voltage versus VIN (Legacy Chip)
GUID-1E69FCBD-B735-4849-8E24-CF44D0759648-low.png
VOUT = 3.0 V
Figure 5-7 Output Voltage versus VIN (Legacy Chip)
GUID-20231203-SS0I-NDPD-KM9W-LXPG2QXZPXDM-low.svg
VOUT = 3.3 V, IL = 1 mA
Figure 5-9 Output Voltage versus VIN and Temperature (New Chip)
GUID-001602EE-AF18-4599-AC23-8D00022D8BA5-low.png
Figure 5-11 Dropout Voltage (VDO) versus Temperature (Legacy Chip)
GUID-DED9BA92-2308-49F9-8584-AF60C6421A3B-low.png
Figure 5-13 Dropout Voltage (VDO) versus Load Current (Legacy Chip)
GUID-F1EA4CCC-4038-4290-BE27-76707922F4E4-low.png
Figure 5-15 Ground Pin Current (IGND) versus Temperature (Legacy Chip)
GUID-628271B7-590D-44B8-8A37-8D9C688529F9-low.png
Figure 5-17 Ground Pin Current (IGND) versus Load Current (Legacy Chip)
GUID-7B36134E-9063-4E0D-8B1D-4D4C9134436C-low.png
VOUT = 5 V, RL = ∞ and RL = 5 kΩ
Figure 5-19 Input Current versus Input Voltage (VIN) (Legacy Chip)
GUID-20231203-SS0I-JRBB-2HZM-MVLZLZHJTN8G-low.svg
VOUT = 3.3 V, RL = 3.3 kΩ
Figure 5-21 Input Current versus Input Voltage (VIN) (New Chip)
GUID-20231203-SS0I-SX1H-KLJ1-WKBNBDFXK7J9-low.svg
VOUT = 3.3 V, IL = 100 mA
Figure 5-23 Line Transient Response (New Chip)
GUID-20231203-SS0I-WTMH-J9VM-P3BW6DMJJ48C-low.svg
VOUT = 3.3 V, IL = 1 mA
Figure 5-25 Line Transient Response (New Chip)
GUID-0F830462-A607-4260-AD04-D30653FA4CA5-low.png
VOUT = 3.0 V, COUT = 10 μF
Figure 5-27 Load Transient Response (Legacy Chip)
GUID-D235BF97-9C35-4EAB-91D2-0C419B6457CB-low.png
VOUT = 5.0 V, COUT = 10 μF
Figure 5-29 Load Transient Response (Legacy Chip)
GUID-AF89FA89-4FE4-463D-99E9-745866BE0A23-low.png
VIN = 6.0 V
Figure 5-31 Short Circuit Current versus Time (Legacy Chip)
GUID-6B725C68-BEB0-4644-B24D-4D73C37AE050-low.png
VIN = 16.0 V
Figure 5-33 Short Circuit Current versus Time (Legacy Chip)
GUID-951C8610-A7CB-432D-9EF4-4BD730B6B725-low.png
Figure 5-35 Instantaneous Short Circuit Current versus Temperature (Legacy Chip)
GUID-4D394225-D7D9-462A-9323-F020C8A82C9A-low.png
VIN = 6.0 V
Figure 5-37 Short Circuit Current versus Output Voltage (VOUT) (Legacy Chip)
GUID-57658777-3D36-4C69-8C49-EBE3DEE46A8C-low.png
VOUT = 3.0 V
Figure 5-39 Output Impedance versus Frequency (Legacy Chip)
GUID-84F5C9AB-4F7F-409C-B1A3-361C6169E5C0-low.png
Figure 5-41 Ripple Rejection versus Frequency (Legacy Chip)
GUID-20231125-SS0I-RGJT-MNKF-D8MJRXBJBFWC-low.svg
Figure 5-43 Ripple Rejection versus Output Capacitor (CL) & Frequency (New Chip)
GUID-20231125-SS0I-9DRC-3HGD-TCKKHMQ98XRT-low.svg
Figure 5-45 Output Noise Density versus Load Current (IL) Frequency (New Chip)
GUID-407A8AC9-652F-4F7C-9B9D-D45FDDC7B2FE-low.png
Figure 5-47 Input-to-Output Leakage versus Temperature (Legacy Chip)
GUID-20231203-SS0I-SF7M-8CDN-FH6JKNWLD3DX-low.svg
Figure 5-49 Output Reverse Leakage versus Temperature (New Chip)
GUID-20231125-SS0I-37DK-VDB0-LKN3QRVMTSLL-low.svg
VOUT = 3.3 V, RL = 3.3 kΩ
Figure 5-51 Turn-on Waveform (New Chip)
GUID-20231203-SS0I-2MBB-KD6J-XNSCBWRFWGRC-low.svg
VOUT = 5 V, RL = 5 kΩ
Figure 5-53 Turn-off Waveform (New Chip)
GUID-20231125-SS0I-DJFT-CTS3-P9G2Z9HFP7H3-low.svg
VIN = 4.3 V
Figure 5-55 ON/ OFF Pin Current versus VON/ OFF (New Chip)
GUID-28D45904-DB57-4F14-8ECE-F3FD97CBF67C-low.png
Figure 5-57 ON/ OFF Threshold versus Temperature (Legacy Chip)
GUID-09EC1558-E753-4A80-A239-1950A85BBC0E-low.png
VIN = 4.3 V, VOUT = 3.3 V
Figure 5-2 Output Voltage versus Temperature (Legacy Chip)
GUID-20231125-SS0I-G9GL-ZP2T-TX1H73GRP4RX-low.svg
VIN = 4.3 V, VOUT = 3.3 V
Figure 5-4 Output Voltage versus Temperature (New Chip)
GUID-206126EF-4336-485E-8E24-56A01F645439-low.png
VOUT = 3.3 V
Figure 5-6 Output Voltage versus VIN (Legacy Chip)
GUID-20231125-SS0I-CN2F-NCHJ-Q1PQFQPLRLKT-low.svg
VOUT = 3.3 V
Figure 5-8 Output Voltage versus VIN (New Chip)
GUID-20231125-SS0I-C2MR-B8H0-WW3SW7LS6KZT-low.svg
VOUT = 3.3 , IL = 1 mA
Figure 5-10 Line Regulation versus VIN & Temperature (New Chip)
GUID-20231125-SS0I-VSQP-FQNP-PZGGFBP5BGGQ-low.svg
Figure 5-12 Dropout Voltage (VDO) versus Temperature (New Chip)
GUID-20231125-SS0I-Z33Z-BM64-G3DLT1MHNZH2-low.svg
Figure 5-14 Dropout Voltage (VDO) versus Load Current (New Chip)
GUID-20231203-SS0I-CZHF-QGSB-TLTR1L1T4ZT6-low.svg
Figure 5-16 Ground Pin Current (IGND) versus Temperature (New Chip)
GUID-20231125-SS0I-0QN0-TKQB-Z90PCZKNNDL1-low.svg
Figure 5-18 Ground Pin Current (IGND) versus Load Current (New Chip)
GUID-ED9F4E2C-B4BE-45BF-BD1B-48978D8D97C5-low.png
VOUT = 5 V, RL = 500 Ω and RL = 50 Ω
Figure 5-20 Input Current versus Input Voltage (VIN) (Legacy Chip)
GUID-019D17C2-4FCE-4D01-9EB4-4938A3DEFEF5-low.png
VOUT = 5 V, IL = 100 mA
Figure 5-22 Line Transient Response (Legacy Chip)
GUID-8D071DFA-F2FE-4158-A914-010EA2E845F3-low.png
VOUT = 5 V, IL = 1 mA
Figure 5-24 Line Transient Response (Legacy Chip)
GUID-76A911BF-991A-4B99-ADEB-07AA778A2E9C-low.png
VOUT = 3.0 V, COUT = 3.3 μF
Figure 5-26 Load Transient Response (Legacy Chip)
GUID-CF128C13-67C5-4B41-8BCA-8D2DD732618A-low.png
VOUT = 5.0 V, COUT = 3.3 μF
Figure 5-28 Load Transient Response (Legacy Chip)
GUID-20231125-SS0I-9RVB-XJLQ-43DK3B88T3LM-low.svg
VOUT = 3.3 V, COUT = 2.2 μF
Figure 5-30 Load Transient Response (New Chip)
GUID-20231125-SS0I-Z01T-FXGX-B7MZ5C7FGZLR-low.svg
VIN = 6.0 V
Figure 5-32 Short Circuit Current versus Time (New Chip)
GUID-20231125-SS0I-QJSP-XHBN-LFTJKMKGNRPM-low.svg
VIN = 16.0 V
Figure 5-34 Short Circuit Current versus Time (New Chip)
GUID-20231203-SS0I-ND4M-TNGH-1HTC9S3HVJJN-low.svg
Figure 5-36 Instantaneous Short Circuit Current versus Temperature (New Chip)
GUID-20221126-SS0I-FLNQ-FPBB-JBNSFTBXGNSS-low.svg
Figure 5-38 Short Circuit Current versus Output Voltage (VOUT) (New Chip)
GUID-8652A854-67AF-4CD0-90EC-A1D2DC4E307E-low.png
VOUT = 3.0 V
Figure 5-40 Output Impedance versus Frequency (Legacy Chip)
GUID-20231125-SS0I-GLSW-XG24-6WMLZXCJ2PBM-low.svg
Figure 5-42 Ripple Rejection versus Load Current (IL) & Frequency (New Chip)
GUID-D9FDCA07-3430-4C71-B004-A9722E43A7CC-low.png
Figure 5-44 Output Noise Density versus Frequency (Legacy Chip)
GUID-20231125-SS0I-ZHCM-HWLT-WSW4J55CKTQB-low.svg
Figure 5-46 Output Noise Density versus Output Capacitor (CL) Frequency (New Chip)
GUID-6AEA0F07-4763-4BBD-9B91-6123ADDB7D45-low.png
Figure 5-48 Output Reverse Leakage versus Temperature (Legacy Chip)
GUID-EE3964A6-D753-4B9B-8976-CBB92269F697-low.png
VOUT = 5 V, RL = 5 kΩ
Figure 5-50 Turn-on Waveform (Legacy Chip)
GUID-B71C4049-AA7C-4353-89B6-67424BA50DDF-low.png
VOUT = 5 V, RL = 5 kΩ
Figure 5-52 Turn-off Waveform (Legacy Chip)
GUID-B335BB87-FDB6-479F-9581-80A8795B6B17-low.png
Figure 5-54 ON/ OFF Pin Current versus VON/ OFF (Legacy Chip)
GUID-20231125-SS0I-L8CN-SRJC-K0LTB7R1RPHW-low.svg
VIN = 16.0 V
Figure 5-56 ON/ OFF Pin Current versus VON/ OFF (New Chip)
GUID-20231125-SS0I-D1T0-GHZ8-N7CTML9JV1Q9-low.svg
Figure 5-58 ON/ OFF Threshold versus Temperature (New Chip)