RS5RM5437B-T1-FA datasheet, PDF

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RS5RM5437B-T1-FA: DescriptionSwitching Regulator, Voltage-mode, 0.25A, 60kHz Switching Freq-Max, CMOS, PDSO8, SOP-8; CategoryPower/power management The power supply circuit; File Size586KB，29 Pages; ManufacturerRICOH Electronic Devices Co., Ltd.; Environmental Compliance

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RS5RM5437B-T1-FA Overview

Switching Regulator, Voltage-mode, 0.25A, 60kHz Switching Freq-Max, CMOS, PDSO8, SOP-8

RS5RM5437B-T1-FA Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	RICOH Electronic Devices Co., Ltd.
Parts packaging code	SOIC
package instruction	LSOP,
Contacts	8
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	DETECTOR VOLTAGE = 3.7 VOLT
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	10 V
Minimum input voltage	1.2 V
JESD-30 code	R-PDSO-G8
JESD-609 code	e2
length	5.2 mm
Number of functions	1
Number of terminals	8
Maximum operating temperature	80 °C
Minimum operating temperature	-30 °C
Maximum output current	0.25 A
Nominal output voltage	5.4 V
Package body material	PLASTIC/EPOXY
encapsulated code	LSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1.7 mm
surface mount	YES
Switch configuration	BOOST
Maximum switching frequency	60 kHz
technology	CMOS
Temperature level	COMMERCIAL EXTENDED
Terminal surface	Tin/Silver (Sn/Ag)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	4.4 mm

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PWM STEP-UP DC/DC CONVERTER WITH

VOLTAGE REGULATOR AND DETECTOR

RS5RM SERIES

OUTLINE

NO. EA-018-0311

The RS5RM Series are CMOS-based step-up DC/DC converter ICs equipped with a voltage regulator (VR) and

a voltage detector (VD). Each of these step-up DC/DC converter ICs consists of a PWM DC/DC converter, a linear

regulator and a voltage detector. These ICs are output-voltage-fixed type regulators which function as a linear

regulator when input voltage is high, and as step-up DC/DC converter+linear regulator when input voltage is low,

by using an inductor, a diode and a capacitor as external parts for the ICs.

Since a voltage detector is built in these ICs, the potentials such as the output voltage of DC/DC converters can

be monitored.

In addition, these step-up DC/DC converter ICs are suitable for battery-powered and hand-held instruments

because internal circuits can be turned off by the chip enable function so that the standby current can be mini-

mized.

FEATURES

• Low Supply Current ..........................................Typ. 55µA (RS5RM3624A : V

=3.0V,at no load)

• Standby Mode.....................................................Istandby=Max. 1.0µA (RS5RMxxxxA)

Istandby=Max. 10.0µA (RS5RMxxxxB)

• Low Voltage Operation Possible .......................Operating Voltage V

=1.2V to 10V

• High Output Voltage Accuracy .........................Fixed Output Voltage Accuracy±2.5%

• High Voltage Detection Accuracy .....................±2.5%

• Output Voltage can be set at User's request (refer to Selection Guide).

• Voltage close to battery's voltage can be output because these ICs are of a step-up / step-down type

(Ex. a fixed voltage of 3V can be output by a 3V battery).

• Soft Start Function, built-in Protection Circuits for Lx Driver

• Phase Compensation Circuits built in

• Pin for External Driver is equipped, and a large current output can be obtained.

• Small Packages ..................................................8pin SOP

APPLICATIONS

• Power source for cameras, camcorders, and hand-held audio equipment.

• Power source for small OA apparatus such as note book personal computers,and word processors.

• Power source for hand-held communication appliances such as pagers,cordless telephones, and cellular phones.

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