ST1638-XXS23 STANSON [Stanson Technology], ST1638-XXS23 Datasheet

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ST1638-XXS23

Manufacturer Part Number
ST1638-XXS23
Description
Step-Up DC/DC Converter High Efficiency PFM
Manufacturer
STANSON [Stanson Technology]
Datasheet
1.ST1638-XXS23.pdf (7 pages)
Step-Up DC/DC Converter
High Efficiency PFM
DESCRIPTION
battery powered devices. Only three external components are required to construct a low ripple,
high efficiency converter. ST1638 can start up from 0.9V input voltage with 1mA load.
conscious applications.
PIN CONFIGURATION
PART MARKING
GND
SOT-23-3L
SOT-23-3L
Y ： Year
A ： Day Code
638YA
The ST1638 is a high efficiency PFM step-up DC/DC converter for application using
The space saving SOT-89 and SOT-23 packages make ST1638 an ideal choice for spce
VOUT
SW
STANSON TECHNOLOGY
120 Bentley Square, Mountain View, Ca 94040 USA
TEL: (650) 9389294 FAX: (650) 9389295
GND
S1638
Y ： Year
A ： Day Code
SOT-89
SOP-89
YW
VOUT
SW
APPLICATIONS
FEATURES
Battery Powered Devices
Camera
PDA
Hand Held Communication Equipment
Camcoder
Power Source for Applications which
Require Higher Voltage than Batteries
can Provide
Larger than 85% Efficiency
Low Startup Voltage, 0.9V at 1mA
Low Ripple and Low Noise
Low Quiescent Current
Minimum Number of External
Components
SOT-89 and SOT-23 Small Package
ST1638
Page 1

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ST1638-XXS23 Summary of contents

Page 1

... Only three external components are required to construct a low ripple, high efficiency converter. ST1638 can start up from 0.9V input voltage with 1mA load. The space saving SOT-89 and SOT-23 packages make ST1638 an ideal choice for spce conscious applications. PIN CONFIGURATION ...

Page 2

... Step-Up DC/DC Converter High Efficiency PFM TYPICAL APPLCTUON CIRCUIT TEST CIRCUITS PIN DESCRIPTION Pin Symbol 1 GND Ground 2 V Output Voltage OUT 3 SW Switch Voltage STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST1638 Descripton Page2 ...

Page 3

... Step-Up DC/DC Converter High Efficiency PFM BLOCK DIAGRAM ORDERING INFORMATION Part Number ST1638-XXS89 ST1638-XXS23 ※ XX: Output Voltage Tape Reel; Pb – Fr STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST1638 Package SOT-89 SOT-23 Part Marking ST1638 ...

Page 4

... Thermal Resistance Junction-Case(*) (*)The power dissipation and thermal resistance are evaluated under copper board mounted with free air conditions. STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST1638 Parameter SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 ...

Page 5

... SW Leakage Current LEAKAGE Fosc Max Oscillator Freq. D Oscillator Duty Cycle OSC Efficiency STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST1638 Conditions Min. Typ. Max. Unit -2 mA 0→2V OUT mA 2→0V ...

Page 6

... Step-Up DC/DC Converter High Efficiency PFM SOT- 89 PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST1638 Page 6 ...

Page 7

Green-Mode PWM Controller 300mA Driving Capability SOT-23-3L PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 ST6850 Page 7 ...

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