SIP12101 Datasheet, PDF (1/13 Pages) Vishay Siliconix – High Performance Step-Down DC-DC Converter With Adjustable Output Voltage

SiP12101
Vishay Siliconix
High Performance Step-Down DC-DC Converter
With Adjustable Output Voltage
DESCRIPTION
The SiP12101 is a high efficiency 600 mA step down
converter with internal low on resistance power MOSFET
switch and synchronous rectifier transistors. It is designed to
convert one cell Lilon battery or three cell alkaline battery
voltages to an adjustable dc output. The integrated high
frequency error amplifier with internal compensation
minimizes external components.
2 MHz switching permits use of small external inductor and
capacitor sizes allowing one of the smallest solutions.
The SiP12101 is available in the 10 pin MSOP and is
specified to operate over the industrial temperature range of
- 40 °C to 85 °C.
FEATURES
• 2 MHz PWM operation
• Integrated MOSFET switches
• 2.6 V to 6.0 V input voltage range
• Minimal number of external components
• Up to 96 % conversion efficiency
• 600 mA load capability
• 100 % cuty cycle allows low dropout
• Integrated compensation circuit
• Over-current protection
• Shutdown current < 2 mA
• Thermal shutdown
• Integrated UVLO
• 10 pin MSOP
APPLICATIONS
• PDAs/palmtop PCs
• LCD podules
• Portable image scanners
• GPS receivers
• Smart phones
• MP3 players
• 3G cell phone
• Digital cameras
TYPICAL APPLICATIONS CIRCUIT
BATTERY
C_IN
10 µF
ENABLE
V_DD
V_IN
V_DD
LX
V_DD
SiP12101
PGND
FB
SD
REF
V_DD
AGND
2.2 µH
C_OUT
4.7 µF
REF
V_OUT
R₁
R₂
Document Number: 73057
S09-1453-Rev. B, 03-Aug-09
www.vishay.com
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