UP6014 datasheet(12/15 Pages) UPI

12 / 15 page

uP6014

uP6014-DS-P0000, July 2015

www.upi-semi.com

Application Information

Component Selection

External component selection begins with inductor value

selection based on the considerations of the output voltage,

output current, and the maximum/minimum input voltages.

Inductor Selection

Inductor selection should consider the inductor value, rated

current, DCR, size, core material, and cost. The inductor

value is selected based on the consideration of inductor

ripple current and the inductor rated saturation current

should be higher than the peak current at maximum load.

The inductor should have low core loss at 500kHz and low

DCR for better efficiency. Depending on the application,

inductor values between 2uH and 2.2uH are recommended.

Capacitor Selection

For better voltage filtering, the low ESR of capacitor is

recommended. It is recommended to use X5R or X7R type

capacitor for the best performance.

Layout Consideration

For best performance of the uP6014, the following guidelines

are recommended.

1. Input and output capacitors should be placed close to

the IC and connected to ground plane to reduce noise

coupling.

2. The GND should be connected to a strong ground plane

for heat sinking and noise protection.

3. Keep the main current traces as short and wide as

possible.

4. LX node of DC-DC converter is with high frequency

voltage swing. It should be kept at a small area.

5. Please keep the V

BAT trace away from the noise source

such as LX node and place C

BAT close to the IC and

connected to ground plane to reduce noise coupling.

6. Place the feedback components as close as possible to

the IC and keep away from the noisy devices.

VOUT

GND

VBAT

ILM01

GND

Inductor

CIN

COUT

CBAT

Via for GND

Via for ILM01

Figure 1. PSOP - 8L Layout Reference

UP6014 Datasheet(PDF) 12 Page - uPI Group Inc.

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