SP6651AEU Datasheet, PDF (1/4 Pages) Sipex Corporation – Evaluation Board Manual

SP6651AEU
Evaluation Board Manual
High Efficiency Synchronous
Step-Down Converter with up to
98% efficiency
800mA Output Current, only
20uA Quiescent Current
2.7V-6.5V Input Voltage range,
Output Adjustable down to 0.8V
µSOIC Package & Ceramic
Capacitors for small, low profile
Power Supply
Ideal for PDAs, Digital Cameras,
Wireless Modems, Cellular
Telephones
DESCRIPTION
The SP6651A Evaluation Board is designed to help the user evaluate the performance
of the SP6651A for use as a single Li-Ion battery Step-Down DC-DC Converter. The
SP6651A 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 SP6651AEU evaluation
board is a complete power supply circuit to provide ease of evaluation for the DC/DC
Converter performance.
FIGURE 1. SP6651A 3.3V OUTPUT EVALUATION BOARD SCHEMATIC
Vin 2.7 - 6.5VDC
CIN
22uF
BLON
1
D1 ^{J 1}
2
3
1
D0 ^{J 2}
2
3
RVIN
10.0
CVIN
1.0uF
U1
1 _PVin
LX ¹⁰
2
Vin
9
PGND
3
8
BLON GND
4
D1
7
Vout
5 _D0
FB ⁶
SP6651A
L1 _10uH
Vout 3.3V 800mA
CF
22pF
RF
825K
RI
261K
COUT
22uF