SP6654EB Datasheet, PDF (1/4 Pages) Sipex Corporation – Evaluation Board Manual

ƒ High Efficiency
Synchronous Step-Down
Converter with up to
98% efficiency
ƒ 800mA Output Current,
only 20uA Quiescent
Current
ƒ 2.7V-6.5V Input Voltage
range, Output Adjustable
down to 0.8V
ƒ µSOIC Package & DFN
Ceramic Capacitors for
small, low profile Power
Supply
SP6654EB
Evaluation Board Manual
DESCRIPTION
The SP6654 Evaluation Board is designed to help the user evaluate the performance
of the SP6654 for use as a single Li-Ion battery Step-Down DC-DC Converter. The
SP6654 operates from 2.7V to 5.5Vinput, with the highest efficiency in the range 3.0V to
4.2V where the Li-Ion battery has the most energy. The SP6654EB evaluation board is
a complete power supply circuit to provide ease of evaluation for the DC/DC Converter
performance.
FIGURE 1. SP6654 3.3V OUTPUT EVALUATION BOARD SCHEMATIC
Vin 2.7 - 5.5VDC
PWRGD
1
D1
2
3
1
D0
2
3
RVIN
10.0
CIN
22uF
U1 SP6654
1 _PVin
LX ¹⁰
2 _{Vin PGND} 9
3 _{PWRGD GND} 8
4
D1
7
Vout
5 _D0
FB ⁶
CVIN
1.0uF
L1 _10uH
Vout 3.3V 800mA
CF
22pF
RF
825K
RI
261K
COUT
22uF
Date: 02/18/05
SP6654 Evaluation Board Manual Copyright Sipex Corporation