DESCRIPTION

The SP4446 Evaluation Boards are designed to help the user evaluate the performance of the

SP4446 for use as a single or dual cell input to +5V output DC-DC Converter. The SP4446

have a fixed output voltage programmed to +5V (consult the factory for other voltage options).

The evaluation board is a completely assembled and tested surface mount board which

provides easy probe access points to all SP4446 Inputs and Outputs so that the user can

quickly connect and measure electrical characteristics and waveforms.

SP4446 EVALUATION BOARD SCHEMATIC

Easy Evaluation for the

SP4446 2V to 7V input to 25

to 30V Output

SP4446 provides up to

30mA output current

High Efficiency: up to 80%

SOT23-5 Package & SMT

components for small, low

profile Power Supply

SP4446

Evaluation Board Manual

R1

1.0M

C2

Open

R2

61.9K

J1 SHDN

1

2

3

1.2V to 5V

LOAD

C4

4.7uF

Murata LQH32CN100K11

C1

330pF

Vout

C3

2.2uF

L1 10uH 0.45A

U1 SP4446

3

4

FB

SHDN

D1

MBR0530