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SP6659EB Datasheet

  • SP6659EB

  • Evaluation Board Manual

  • 3頁

  • SIPEX

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SP6659EB
Evaluation Board Manual
Synchronous Buck regulator with
up to 94% efficiency
1.5MHz Constant frequency
operation
600mA Output Current
2.5V-5.5V Input Voltage range,
0.6V reference allow low output
voltage
No Schottky diode required
Current mode operation
Over-temperature protected
Low profile SOT23-5 Package &
Ceramic Capacitors for small,
low profile Power Supply
Ideal for PDAs, Digital Cameras,
Wireless Modems, Cellular
Telephones
DESCRIPTION
The
SP6659 Evaluation Board
is designed to help the user evaluate the performance
of the SP6659 for use as a single Li-Ion battery Step-Down DC-DC Converter. The
SP6659 operates from 2.5V to 5.5V input, with the highest efficiency in the range 3.0V
to 4.2V where the Li-Ion battery has the most energy. The SP6659EB evaluation board
is a complete power supply circuit to provide ease of evaluation for the DC/DC
Converter performance.
FIGURE 1. SP6659 1.8V OUTPUT
EVALUATION BOARD SCHEMATIC
U1
Vin=2.5-5.5V
1
2
3
SP6659
SW
3
4
1
2
L1 2.2 uH
CF
100pF
Vout=1.8V
VIN
RUN
CIN
4.7uF
J1
VFB
GND
5
R1
200K
COUT
10uF
VFB=0.6V
R2
100K
Rev 08/29/05
SP6659 Evaluation Board Manual
Copyright Sipex Corporation

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