CS8151: 5 V / 100 mA Low Dropout (LDO) Voltage Regulator with Reset, Delay Reset, Watchdog & Wake Up

Datasheet: 5V, 100mA Low Dropout Linear Regulator with WATCHDOG, RESETbar, & WAKE UP
Rev. 18 (168.0kB)
Product Overview
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Product Change Notification
The CS8151 is a precision 5.0 V, 100 mA micro-power voltage regulator with very low quiescent current (400 mA typical at 200 mA load). The 5.0 V output is accurate within +/-2% and supplies 100 mA of load current with a typical dropout voltage of 400 mV. Microprocessor control logic includes Watchdog, Wake Up and RESETbar. This unique combination of low quiescent current and full microprocessor control makes the CS8151 ideal for use in battery operated, microprocessor controlled equipment.

The CS8151 Wake Up function brings the microprocessor out of Sleep mode. The microprocessor in turn, signals its Wake Up status back to the CS8151 by issuing a Watchdog signal.

The Watchdog logic function monitors an input signal (WDI) from the microprocessor. The CS8151 responds to the falling edge of the Watchdog signal which it expects at least once during each wake-up period. When the correct Watchdog signal is received, a falling edge is issued on the wake-up signal line.

RESETbar is independent of VIN and operates correctly to an output voltage as low as 1.0 V. A RESETbar signal is issued in any of three situations. During power up the RESETbar is held low until the output voltage is in regulation. During operation if the output voltage shifts below the regulation limits, the RESETbar toggles low and remains low until proper output voltage regulation is restored. And finally, a RESETbar signal is issued if the regulator does not receive a Watchdog signal within the Wake Up period.

The RESETbar pulse width, Wake Up signal frequency, and Wake Up delay time are all set by one external capacitor CDelay.

The regulator is protected against short circuit, over voltage, and thermal runaway conditions. The device can withstand 74 volt peak transients, making it suitable for use in automotive environments.
Features   Benefits
     
  • 5V +/-2% / 100 mA Output Voltage
 
  • Perfect for powering microprocessors.
  • Micropower Compatible Control Functions:
    - Wake Up
    - Watchdog
    - RESETbar
 
  • Provides design flexibility for microprocessor control.
  • Low Dropout Voltage: 400mV @ 100mA
 
  • Provides maximum regulated output voltage at low battery input voltage.
  • Low Sleep Mode Quiescent Current (400mA typ)
 
  • Meets automotive module requirements for low quiescent current.
  • Protection Features:
    - Thermal Shutdown
    - Short Circuit
    - 74V Load Dump
    - Reverse Transient (-50V)
 
  • Protects device from catastrophic damage.
  • Internally Fused Leads in DIP-16 and SO-16L Packages
 
  • Better thermal performance as compared to packages without fused leads
  • Pb-Free Packages are Available
 
  • RoHS compliant to meet environmental regulations.
Applications   End Products
  • Body and Chassis
  • Powertrain
  • Safety
 
  • Automotive
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (7)
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CS8151CGN8G Obsolete 
Pb-free
Halide free
CS8151 PDIP-8 626-05 NA Tube 50  
CS8151D2G Obsolete
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS8151 SOIC-14 751A-03 3 260 Tube 55  
CS8151D2R2G Obsolete
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS8151 SOIC-14 751A-03 3 260 Tape and Reel 2500  
CS8151YDPS7G Obsolete 
Pb-free
Halide free
CS8151 D2PAK-7 936AB 3 260 Tube 50  
CS8151YDPSR7G Obsolete 
Pb-free
Halide free
CS8151 D2PAK-7 936AB 3 260 Tape and Reel 750  
CS8151YDWF16G Obsolete 
Pb-free
Halide free
CS8151 SOIC-16W 751G-03 3 260 Tube 47  
CS8151YDWFR16G Obsolete 
Pb-free
Halide free
CS8151 SOIC-16W 751G-03 3 260 Tape and Reel 1000  
CS8151YNF16G Obsolete 
Pb-free
Halide free
CS8151 PDIP-16 648-08 NA Tube 25  
CS8151YT7G Obsolete 
Pb-free
CS8151 NA Tube 50  
CS8151YTHA7G Obsolete 
Pb-free
CS8151 TO-220-7 821H-02 NA Tube 50  
CS8151YTVA7G Obsolete 
Pb-free
CS8151 TO-220-7 821J-02 NA Tube 50  
CS8151CGN8 Obsolete
CS8151 PDIP-8 626-05 NA Tube 50  
CS8151YDPS7 Obsolete
CS8151 D2PAK-7 936AB 2 235 Tube 50  
CS8151YDPSR7 Obsolete
CS8151 D2PAK-7 936AB 2 235 Tape and Reel 750  
CS8151YDWF16 Obsolete
CS8151 SOIC-16W 751G-03 1 235 Tube 47  
CS8151YDWFR16 Obsolete
CS8151 SOIC-16W 751G-03 1 235 Tape and Reel 1000  
CS8151YNF16 Obsolete
CS8151 PDIP-16 648-08 NA Tube 25  
CS8151YT7 Obsolete 
CS8151 NA Tube 50  
CS8151YTHA7 Obsolete 
CS8151 TO-220-7 821H-02 NA Tube 50  
CS8151YTVA7 Obsolete 
CS8151 TO-220-7 821J-02 NA Tube 50  
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Case Outlines
648-08    751A-03    626-05    751G-03    936AB    821H-02    821J-02   
Packages
CS8151: 5 V / 100 mA Low Dropout (LDO) Voltage Regulator with Reset, Delay Reset, Watchdog & Wake Up
CS8151: 5 V / 100 mA Low Dropout (LDO) Voltage Regulator with Reset, Delay Reset, Watchdog & Wake Up
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