SP6655EB Datasheet, PDF (1/4 Pages) Sipex Corporation – Evaluation Board Manual

SP6655EB
Evaluation Board Manual
High Efficiency Synchronous
Step-Down Converter with up to
98% efficiency
400mA Output Current, only
20uA Quiescent Current
2.7V-6.5V Input Voltage range,
Output Adjustable down to 0.8V
DFN Package & Ceramic
Capacitors for small, low profile
Power Supply
Ideal for PDAs, Digital Cameras,
Wireless Modems, Cellular
Telephones
DESCRIPTION
The SP6655 Evaluation Board is designed to help the user evaluate the performance
of the SP6655 for use as a single Li-Ion battery Step-Down DC-DC Converter. The
SP6655 operates from 2.7V to 6.5V input, with the highest efficiency in the range 3.0V
to 4.2V where the Li-Ion battery has the most energy. The SP6655EB evaluation board
is a complete power supply circuit to provide ease of evaluation for the DC/DC
Converter performance.
FIGURE 1. SP6655 1.8V OUTPUT EVALUATION BOARD SCHEMATIC
Vin = 2.7V to 5.0V
BLON
1
D1 ²
3
1
D0 ²
3
RVIN
10.0
CIN
10uF
U1 SP6655
1 _PVin
LX ¹⁰
2 _{Vin PGND} 9
3 _{BLON GND} 8
4 _D1
Vout ⁷
5 _D0
FB ⁶
CVIN
1.0uF
L1 _10uH
Vout = 1.8V
CF
22pF
RF
249K
RI
200K
COUT
10uF