onsemi NCP5030
The NCP5030 is a fixed frequency PWM buck−boost converter optimized for constant current applications such as driving high−powered white LED. The buck−boost is implemented in an H−bridge topology and has an adaptive architecture where it operates in one of three modes: boost, buck−boost, or buck depending on the input and output voltage condition. This device has been designed with high−efficiency for use in portable applications and is capable of driving in DC up to 900 mA into a high power LED for flashlight / torch applications.| Part No. | NCP5030 |
|---|---|
| Datasheet | NCP5030 Download |
| Manufacturer |  onsemi |
| Description | Buck Boost Converter |
| Buy | Stock & Price |
FEATURES
● Efficiency: 87% at 500 mA and 3.3 V VIN● Internal Synchronous Rectifier, No Schottky Diodes
● Adjustable Switching Limit Current to Optimize inductor size
● 0.3 mA Shut−down Control with “True−Cut off”
● Input Voltage Range from 2.7 V to 5.5 V
● 200 mV Feedback Voltage
● Output Over−voltage and Thermal Shut Down Protection Typical
APPLICATIONS
● Portable Flashlight / Torch Lights Vin 1 Cell Li−Ion 2.7 to 5.5 Cin 1 mF C2 10 mF Cin 39 k R1 ENABLE PCA CTRL VIN PVIN LX1 LX1 LX2 4.7 mH L1 VOUT VS NCP5030 C3 22 mF D1 Cout AGND COMP FB PGND L1: TDK RLF7030T−4R7M3R4 C1: 1 mF 6.3 V X5R C2: 10 mF 3.6 V 0805 TDK: C2012X5R0J106MT C3: 22 mF 6.3 V X5R TDK: C2012X5R0J226MTJ C4 22 pF R2 100 k C5 330 pF R3 220 m RSENSE Figure 1. Typical Application Circuit MARKING 12 DIAGRAM 1 1 WDFN12 3x4 MT SUFFIX CASE 506AY 5030 AYWWG G 5030 = Specific Device Code A = Assembly Location Y = Year WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS FB 1 COMP CTRL 2...
