NJU7677 Series
1.8V Operate PWM Control Step-Up / Flyback Switching Regulator IC
NJU7677 Series
1.8V Operate PWM Control Step-Up / Flyback Switching Regulator IC
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Description
The NJU7677 is a high-speed switching regulator control IC for PWM control step-up and fly-back converter that operates from 1.8V. It incorporates a totem pole driver output, which can directly drive an external MOS-FET. The NJU7677 also has a soft-start function, dead time control and timer latch for short circuit protection and their times are all adjustable with external parts. It is available in a small and thin 8-lead MSOP (TVSP) package. It is suitable for battery powered applications.
Spec
Standard | |
---|---|
Input Voltage Range | 1.8 V to 7 V (8 V) |
Operating Temperature Range | -40°C to 85°C |
Supply Current | Typ. 600 µA |
Output Voltage Range | 1.8 V to - V |
Output Voltage Accuracy | ± 1 % |
Oscillator Frequency | 300kHz to 1MHz |
Maximum Duty Cycle | 90% typ. |
Package | MSOP8(TVSP8) |
Control | PWM switching control |
Function | Soft-Start Function (Internal : 4ms typ. or adjustable) Timer Latch for Short Circuit Protection Dead Time Control |
Protections / Functions
TSD | ILX | 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 |
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ILX | LX Current Limit Function |
OCP | Overcurrent Protection |
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 |
Technical Documents
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Related Links
Quality & Packages
Product Name | Compatibility | Package | Marking | Reliability |
---|---|---|---|---|
NJU7677RB1 |
|
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.
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NJU7677 Series