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ZXSC100N8TA

Description
Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO8, SO-8
CategoryPower/power management    The power supply circuit   
File Size433KB,19 Pages
ManufacturerZetex Semiconductors
Websitehttp://www.zetex.com/
Environmental Compliance
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ZXSC100N8TA Overview

Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO8, SO-8

ZXSC100N8TA Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerZetex Semiconductors
package instructionSO-8
Reach Compliance Codeunknown
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE FREQUENCY MODULATION
Minimum input voltage1 V
Nominal input voltage1.2 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.89 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency200 kHz
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
width3.9 mm
Base Number Matches1
ZXSC100
SINGLE CELL DC-DC CONVERTER SOLUTION
DESCRIPTION
The ZXSC100 series is designed for DC-DC
applications where step-up voltage conversion from
very low input voltages is required. These applications
mainly operate from single nickel cadmium or nickel
metal hydride battery cells.
The ZXSC100 devices are non-synchronous PFM,
DC-DC controller ICs which drive an external
transistor. Zetex SuperSOT4
switching transistors,
with saturation resistance as low as 13mΩ, are
recommended as the external switching element.
These bipolar transistors are the best switching
devices available for this type of DC-DC conversion,
enabling high efficiency conversion with input
voltages down to below 1 volt.
The circuit can start up under full load with regulation
maintained down to an input voltage of only 0.926
volts. The solution configuration ensures optimum
FEATURES
SuperSOT4™ switching transistor
ZXT14N20DX:V
CE(sat)
45mV max @ 1A load
Efficiency maintained over a wide range of input
voltages and load currents
82% efficiency @ V
BATT
=1V
Startup under full load
Minimum operating input voltage V
BATT
=0.926V
Adjustable output voltage down to V
BATT
Quiescent current typically 150µA referred to
input voltage
MSOP8 Package
SO8 Package
Demonstration boards available
U1
EM
V
DRIVE
I
SENSE
FB
G
ND
BAS
RE
V
CC
efficiency over a wider range of load currents, several
circuit configurations are possible with power
dissipation up to 2W. The step up output voltage is
easily programmed with external resistors, the
non-synchronous architecture and SuperSOT4™
device enabling an output voltage down to the input
voltage level. For best performance the ZXSC100
quiescent current is a small 150µA ensuring minimum
battery drain in no load conditions.
For the best in space saving the ZXSC100 is offered in
the MSOP8 package, however the devices are also
available in SO8 packaging for applications where
space saving is not so critical.
The IC and discrete combination offers the ultimate
cost vs performance solution for single cell DC-DC
conversion.
APPLICATIONS(continued)
Hand Held Instruments
Portable Medical Equipment
Solar Powered Equipment
LED Flashlight
LED Backlight
TYPICAL APPLICATION CIRCUIT
V
BATT
L1
D1
ZHCS2000
3.3V/0.1A
R1
Q1
ZXT14N20DX
R3
C3
C2
APPLICATIONS
Cordless Telephones
MP3 Players
PDA
Pagers
Battery Backup Supplies
Electronic toothbrush
GPS Receivers
Digital Camera
Palmtop Computers
ZXSC100
C1
R2
R4
ISSUE 1 - JANUARY 2001
1

ZXSC100N8TA Related Products

ZXSC100N8TA ZXSC100N8TC ZXSC100X8TC
Description Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO8, SO-8 Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO8, SO-8 Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO8, MSOP-8
Maker Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors
package instruction SO-8 SOP, MSOP-8
Reach Compliance Code unknown unknown unknown
ECCN code EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE
Control Technology PULSE FREQUENCY MODULATION PULSE FREQUENCY MODULATION PULSE FREQUENCY MODULATION
Minimum input voltage 1 V 1 V 1 V
Nominal input voltage 1.2 V 1.2 V 1.2 V
JESD-30 code R-PDSO-G8 R-PDSO-G8 S-PDSO-G8
length 4.89 mm 4.89 mm 3 mm
Number of functions 1 1 1
Number of terminals 8 8 8
Maximum operating temperature 70 °C 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP TSSOP
Package shape RECTANGULAR RECTANGULAR SQUARE
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.1 mm
surface mount YES YES YES
Switch configuration SINGLE SINGLE SINGLE
Maximum switching frequency 200 kHz 200 kHz 200 kHz
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 0.65 mm
Terminal location DUAL DUAL DUAL
width 3.9 mm 3.9 mm 3 mm
Is it Rohs certified? conform to - conform to
JESD-609 code e3 - e3
Humidity sensitivity level 1 - 1
Terminal surface Matte Tin (Sn) - Matte Tin (Sn)
Base Number Matches 1 1 -
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