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NR885E

SANKEN
Part Number NR885E
Manufacturer SANKEN
Description 3A 18V 350kHz Synchronous Buck Regulator
Published May 8, 2014
Detailed Description 3A, 18V, 350kHz , Synchronous Buck Regulator NR885E General Descriptions The NR885E is synchronous buck regulator ICs i...
Datasheet PDF File NR885E PDF File

NR885E
NR885E

Overview
3A, 18V, 350kHz , Synchronous Buck Regulator NR885E General Descriptions The NR885E is synchronous buck regulator ICs integrates High-side and Low-side power MOSFETs.
With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used.
The ICs have protection functions such as Over-Current Protection (OCP), Under-Voltage Lockout (UVLO) and Thermal Shutdown (TSD).
An adjustable Soft-Start by an external capacitor prevents the excessive inrush current at turn-on the regulator.
The ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application.
The ON/OFF pin (EN Pin) turns the regulator on or off and helps to achieve low power consumption requirements.
The NR885E is available in an 8-pin SOIC package with an exposed thermal pad on the back side.
Oct.
/30/2013 Package  Exposed SOIC 8 Thermally enhanced 8-Pin package Features & Benefits  Current mode PWM control  Up to 95% efficiency  Stable with low ESR ceramic output capacitors  Built-in protection function Over Current Protection (OCP) Thermal Shutdown (TSD) Under Voltage Lockout (UVLO)  Built-in phase compensation  Adjustable Soft-Start with an external capacitor  Turn ON/OFF the regulator function Electrical Characteristics  3A output current  Operating input range VIN = 4.
5V～18V  Output adjustable VO= 0.
8V～14V  Fixed 350kHz frequency Applications  LCD TV / Blu-Ray / Set top box  Green Electronic products  Other power supply Typical Application Circuit VIN R3 C10 SW 3 L1 VIN_s C1 C2 R1 7 2 IN EN 1 BS Vo Vo_s NR885E 8 SS GND 4 FB NC 6 5 R5 C4 C5 R4 GND GND C9 R6 D1 Option SW C1, C2: 10μF / 25V C4, C5: 22μF / 16V C9: 0.
1μF C10: 0.
1μF R1: 100kΩ L1: 10μH R3: 22Ω R4: 8.
2 kΩ, R5: 4.
3kΩ (Vo=3.
3V) R6: 3.
9kΩ Rev.
1.
1 SANKEN ELECTRIC CO.
, LTD.
http://www.
sanken-ele.
co.
jp 1 http://www.
Datasheet4U.
com 3A, 18V, 350kHz , Synchronous Buck Regulator NR885E Series Lineup Product No.
NR885E (1) (...


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