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SP9718 Datasheet(PDF) 1 Page - Stanson Technology

Part # SP9718
Description  1.5A LOW-NOISE PWM STEP-DOWN REGULATOR
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Manufacturer  STANSON [Stanson Technology]
Direct Link  http://www.stansontech.com
Logo STANSON - Stanson Technology

SP9718 Datasheet(HTML) 1 Page - Stanson Technology

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2007/12/20
Ver.1
Page 1
SP9718
1.5A LOW-NOISE PWM STEP-DOWN REGULATOR
DESCRIPTION
APPLICATIONS
The SP9718 is low-noise pulse-width-modulated,
DC-DC step-down converter. It powers logic and
transmitters in small wireless systems such as
cellular phones, communicating PDAs, and
handy-terminals. The device features an internal
synchronous rectifier for high efficiency; it requires
no external Schottky diode. Excellent noise
characteristics
and
fixed-frequency
operation
provide easy post-filtering. The SP9718 is ideally
suited for Li-Ion battery applications. It is also
useful for +3V or +5V fixed input applications.
The device operates in one of four modes. Forced
PWM mode operates at a fixed frequency
regardless of the load. Shutdown mode places the
device in standby, reducing quiescent supply
current to under 0.1μA.
The SP9718 can deliver over 1.5A. The output
voltage can be adjusted from VREF to VIN. The
input range is from 2.0V to 5.0V. Other features of
the SP9718 include high efficiency, low dropout
voltage. It is available in a space-saving 8-pin SOP
package.
• Cellular Phone
• Cordless Phone
• PDAs and Handy-Terminals
• CPU I/O Supplies
• Notebook Chipset Supplies
• Battery Operated Devices
• ADSL
FEATURES
PIN CONFIGURATION ( SOP-8 Power Pad )
PART MARKING
• 1.2MHz switching and synchronization
• Dynamic output-voltage adjustment from
VREF to VIN
• 1.5A Guaranteed Output Current
• 95% Efficiency
• No Schottky Diode Required
• External Soft Start
8-pin PSOP power packages


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