ST735SCN datasheet, PDF - EEWORLD Datasheet

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ST735SCN: Description300kHz, -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

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ST735SCN Overview

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

ST735SCN Parametric

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

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ST735S

ST735T

300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT

CURRENT-MODE PWM REGULATOR

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

-O

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.

October 2002

1/11

ST735SCN Related Products

	ST735SCN	ST735TCD-TR	ST735T	ST735SCD-TR	ST735TCN	ST735S	ST735TCD
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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