ACTIVE
NR131A
Package：eSOIC8
NR131A is a switching regulator IC with built-in power MOSFET.
Supports ultra low ESR capacitor including ceramic capacitors, using current mode control.
Realizes high efficiency with pulse skip operation at light load.
The product reducies component count with built-in phase compensation.
Includes OCP, UVLO, TSD protection functions.
Soft start time can be adjusted by selecting the value of external capacitor. EN function allows ON/OFF with an external signal.
eSOIC8 package with heat slug on package backside.
Design Support
Related Documents
- ■Application Note
Features
-
・Current mode type PWM (normal load)
・Pulse skip operation (light load)
Switch mode for pulse skip load current
・Up to 95% efficiency
・Up to 85% Efficiency at light load
(@Vin=12V,Vo=5V,Io=10mA)
・Low ESR capacitor can be used for output
・Built-in phase compensation circuit
・Time adjustable soft start function
・External ON/OFF function
・Built-in protection functions
-Overcurrent protection (OCP):
Drooping-type, auto restart
-Thermal shutdown (TSD): Auto restart
-Undervoltage lock out circuit (UVLO)
・eSOIC8 package with thermally enhanced heat slug
Application
-
・ VIN=12V type for power supply bus unit
・Power supply for standby applications
(TV, Audio, Motor Driver), USB-Power
Specifications
| Built-in Power | Power IC |
|---|---|
| Output Method | Variable |
| Output Voltage | 14.0 V |
| Output Current | 3.0 A |
| Input Voltage Range | 4.5 to 17 V |
| Operating Frequency | 350 kHz |
| Synchronous / Asynchronous | Asynchronous |
| Current Mode Control | YES |
| Maximum Input Voltage | 19.00 V |
| Output On / Off | YES |
| Low ESR Capacitor Support | YES |
| Overcurrent Protection | Drooping Type |
| Phase Compensation | Built-in |
| Thermal Protection | YES |
| UVLO | YES |
| Package Weight (Typ.) | 0.08 g |
Typical Application
Block Diagram
Questions or Comments?
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