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NJU7691 Series
300mA Synchronous Step-Down Switching Regulator IC

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ECAD Model: Learn more
  • Standard
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Description

The NJU7691 is a synchronous rectification switching regulator IC with a power MOSFET (300mA output).It incorporates an over-current detection and thermal shutdown circuit, which can make a power supply circuit with few external parts. The output voltage can be set from 1.8V.Therefore it is suitable for a power supply circuit for digital chips and logic ICs. The NJU7691 is available in a small and thin 8-lead MSOP (TVSP) package.

Spec

Standard
Input Voltage Range 2.2 V to 7 V (8 V)
Operating Temperature Range -40°C to 85°C
Supply Current Typ. 1300 µA
Standby Current 5 (max.) µA
Output Voltage Range 0.8 V to 6.5 V
Output Voltage Accuracy ± 1 %
Output Current 300 mA
Oscillator Frequency 300kHz to 1MHz
Maximum Duty Cycle 100%
Control PWM switching control
Function Soft-Start Function (4ms typ.)
Note Over Current Protection
300mA Synchronous Step-Down

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Protections / Functions

TSD OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust

Functional Description

TSD Thermal Shutdown Function
OCP Overcurrent Protection

Note: The function previously labeled as "ILX (LX Current Limit Function)" is now shown as "OCP."
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

Functional Description

TSD Thermal Shutdown Function
OCP Overcurrent Protection

Note: The function previously labeled as "ILX (LX Current Limit Function)" is now shown as "OCP."
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
VIN
min (V)		 2.2
VIN
max (V)		 7
VOUT
min (V)		 0.8
VOUT
max (V)		 6.5
IOUT
(mA)		 300
ISS
(µA)		 1300

Technical Documents

  • Related Links

    • Prime Designer

      Online Design Tool

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Quality & Packages

Product Name Compatibility Package Marking Reliability
NJU7691RB1
  • gradeConsumer
 MSOP8(TVSP8) - NJU-1-s-fr
  • Refer to the datasheets for the details on the product.
  • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

FAQ

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Buy / Contact

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    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support
NJU7691 Series