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ST735SCN

Description
300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR
CategoryPower/power management    The power supply circuit   
File Size359KB,11 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
Environmental Compliance
Download Datasheet Parametric Compare View All

ST735SCN Overview

300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR

ST735SCN Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerSTMicroelectronics
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage6.2 V
Minimum input voltage4 V
Nominal input voltage5 V
JESD-30 codeR-PDIP-T8
JESD-609 codee3
Number of functions1
Number of terminals8
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current2 A
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height4.8 mm
surface mountNO
Switch configurationBUCK-BOOST
Maximum switching frequency300 kHz
technologyBICMOS
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
ST735S
ST735T
300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT
CURRENT-MODE PWM REGULATOR
s
s
s
s
s
s
s
s
s
s
s
CONVERTS +4.0V TO + 6.2V INPUT TO -5V
OUTPUT (735S) OR +3.5V TO + 9.0V TO A
NEGATIVE ADJUSTABLE OUTPUT (735T)
1W GUARANTEED OUTPUT POWER
72% TYPICAL EFFICIENCY
0.8mA QUIESCENT CURRENT
1µA SHUTDOWN MODE
300KHZ FIXED FREQUENCY OSCILLATOR
CURRENT MODE PWM CONVERTER
LOW NOISE AND JITTER
SOFT START
SIMPLE APPLICATION CIRCUIT
UNDERVOLTAGE LOCKOUT (735S)
DIP-8
SO-8
DESCRIPTION
The ST735S/ST735T is a Bi-CMOS, inverting
switch mode DC-DC regulator with internal Power
MOSFET that generates a fixed -5V (S version) or
a negative adjustable (T version) output voltage
from a 4V (3.5V for the 735T) to 6.2V input voltage
(9V for the 735T); is guaranteed an output current
of 200mA for inputs greater than 4.5V. The
quiescent current for this device is typically of
SCHEMATIC DIAGRAM
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0.8mA and, in shutdown mode it is reduced to
1µA.
These power-conserving features, along with high
efficiency and applications circuits, thaT lend itself
to minaturization, make the ST735S/ST735T
excellent in a broad range of on-card, HDD and
portable equipment applications. These device
employ a high performance current mode pulse
with modulation (PWM) control scheme to provide
tight output voltage regulation and low noise. The
fixed frequency oscillator is factory trimmed to
300KHz, allowing for easy noise filtering. The
regulator in production is tested to guarantee an
output accuracy within ±5% over all specified
conditions.
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October 2002
1/11

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Description 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR 300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR
Is it lead-free? Lead free Lead free - - Lead free - Lead free
Is it Rohs certified? conform to conform to - conform to conform to - conform to
Maker STMicroelectronics STMicroelectronics - STMicroelectronics STMicroelectronics - STMicroelectronics
Parts packaging code DIP SOIC - SOIC DIP - SOIC
package instruction DIP, DIP8,.3 SOP, SOP8,.25 - SOP, SOP8,.25 DIP, DIP8,.3 - SOP, SOP8,.25
Contacts 8 8 - 8 8 - 8
Reach Compliance Code compli compli - compli compli - compli
ECCN code EAR99 EAR99 - EAR99 EAR99 - EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR - SWITCHING REGULATOR SWITCHING REGULATOR - SWITCHING REGULATOR
control mode CURRENT-MODE CURRENT-MODE - CURRENT-MODE CURRENT-MODE - CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION
Maximum input voltage 6.2 V 6.2 V - 6.2 V 6.2 V - 6.2 V
Minimum input voltage 4 V 4 V - 4 V 4 V - 4 V
Nominal input voltage 5 V 5 V - 5 V 5 V - 5 V
JESD-30 code R-PDIP-T8 R-PDSO-G8 - R-PDSO-G8 R-PDIP-T8 - R-PDSO-G8
JESD-609 code e3 e4 - e4 e3 - e4
Number of functions 1 1 - 1 1 - 1
Number of terminals 8 8 - 8 8 - 8
Maximum operating temperature 125 °C 125 °C - 125 °C 125 °C - 125 °C
Minimum operating temperature -40 °C -40 °C - -40 °C -40 °C - -40 °C
Maximum output current 2 A 2 A - 2 A 2 A - 2 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code DIP SOP - SOP DIP - SOP
Encapsulate equivalent code DIP8,.3 SOP8,.25 - SOP8,.25 DIP8,.3 - SOP8,.25
Package shape RECTANGULAR RECTANGULAR - RECTANGULAR RECTANGULAR - RECTANGULAR
Package form IN-LINE SMALL OUTLINE - SMALL OUTLINE IN-LINE - SMALL OUTLINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED 260 - NOT SPECIFIED NOT SPECIFIED - 260
Certification status Not Qualified Not Qualified - Not Qualified Not Qualified - Not Qualified
Maximum seat height 4.8 mm 1.75 mm - 1.75 mm 4.8 mm - 1.75 mm
surface mount NO YES - YES NO - YES
Switch configuration BUCK-BOOST BUCK-BOOST - BUCK-BOOST BUCK-BOOST - BUCK-BOOST
Maximum switching frequency 300 kHz 300 kHz - 300 kHz 300 kHz - 300 kHz
technology BICMOS BICMOS - BICMOS BICMOS - BICMOS
Temperature level AUTOMOTIVE AUTOMOTIVE - AUTOMOTIVE AUTOMOTIVE - AUTOMOTIVE
Terminal surface Matte Tin (Sn) Nickel/Palladium/Gold (Ni/Pd/Au) - Nickel/Palladium/Gold (Ni/Pd/Au) Matte Tin (Sn) - Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal form THROUGH-HOLE GULL WING - GULL WING THROUGH-HOLE - GULL WING
Terminal pitch 2.54 mm 1.27 mm - 1.27 mm 2.54 mm - 1.27 mm
Terminal location DUAL DUAL - DUAL DUAL - DUAL
Maximum time at peak reflow temperature NOT SPECIFIED 30 - NOT SPECIFIED NOT SPECIFIED - 30
width 7.62 mm 3.9 mm - 3.9 mm 7.62 mm - 3.9 mm
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