R1172S091B-E2-F datasheet, PDF

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R1172S091B-E2-F: DescriptionFixed Positive LDO Regulator, 0.9V, 0.47V Dropout, CMOS, PDSO6, ROHS COMPLIANT, HSOP-6; CategoryPower/power management The power supply circuit; File Size898KB，25 Pages; ManufacturerRICOH Electronic Devices Co., Ltd.; Environmental Compliance

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R1172S091B-E2-F Overview

Fixed Positive LDO Regulator, 0.9V, 0.47V Dropout, CMOS, PDSO6, ROHS COMPLIANT, HSOP-6

R1172S091B-E2-F Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	RICOH Electronic Devices Co., Ltd.
Parts packaging code	SOIC
package instruction	ROHS COMPLIANT, HSOP-6
Contacts	6
Reach Compliance Code	unknown
ECCN code	EAR99
Maximum drop-back voltage 1	0.47 V
Maximum input voltage	6 V
Minimum input voltage	1.4 V
JESD-30 code	R-PDSO-G6
JESD-609 code	e2
length	5.02 mm
Number of functions	1
Number of terminals	6
Maximum output current 1	1.4 A
Maximum output voltage 1	0.93 V
Minimum output voltage 1	0.87 V
Nominal output voltage 1	0.9 V
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	1.85 mm
surface mount	YES
technology	CMOS
Terminal surface	Tin/Silver (Sn/Ag)
Terminal form	GULL WING
Terminal pitch	1.905 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm

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R1172x SERIES

SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO

NO.EA-122-090617

OUTLINE

The R1172x Series are CMOS-based positive voltage regulator ICs. The R1172x Series have features of super

low dropout, 1A output current capability. Even the output voltage is set at 1.5V, on resistance of internal FET is

typically 0.32Ω. Therefore, applications that require a large current at small dropout are suitable for the R1172x

series. Low input voltage is acceptable and low output voltage can be set. The minimum input voltage is 1.4V,

and the lowest set output voltage is 0.8V. Each of these ICs consists of a voltage reference unit, an error

amplifier, resistor net for setting output voltage, a current limit circuit at over-current, a chip enable circuit, a

thermal-shutdown circuit, and so on. A stand-by mode with ultra low consumption current can be realized with

the chip enable pin. The output voltage of R1172 is fixed in the IC.

Since the packages for these ICs are SOT-23-5, SOT-89-5, HSON-6, and HSOP-6J with high power

dissipation, high density mounting of the ICs on boards is possible.

FEATURES

•

Output Current ............................................................ 1A

Supply Current ............................................................. Typ. 60μA

Standby Current .......................................................... Typ. 0.1μA

Input Voltage Range ................................................... 1.4V to 6.0V

Output Voltage.............................................................. Stepwise setting with a step of 0.1V in the range of

0.8V to 5.0V

Dropout Voltage............................................................ Typ. 0.32V (V

OUT

=1.5V,

OUT

=1A)

Typ. 0.18V (V

OUT

=2.8V,

OUT

=1A)

Ripple Rejection ........................................................... Typ. 70dB (V

OUT

=2.8V)

Output Voltage Accuracy..............................................

±2.0%

Temperature-Drift Coefficient of Output Voltage .......... Typ.

±100ppm/°C

Line Regulation ............................................................ Typ. 0.05%/V

Load Regulation ......................................................... Typ. 15mV at I

OUT

=300mA,

Typ. 50mV at I

OUT

=1A

Packages .................................................................... SOT-23-5, SOT-89-5, HSON-6, HSOP-6J

Built-in Inrush current limit circuit ............................... Typ. 500 mA

Built-in Fold-Back Protection Circuit ........................... Typ. 250mA (Current at short mode)

Built-in Thermal Shutdown Circuit .............................. Thermal Shutdown Temperature ; Typ. 150°C

Released Temperature ; Typ. 120°C

Built-in Auto Discharge Function ................................ D version

Output capacitors ....................................................... C

OUT

=Tantalum

4.7μF (V

OUT

< 1.0V)

OUT

=Ceramic

4.7μF (V

OUT

1.0V)

APPLICATIONS

•

Local Power source for Notebook PC.

•

Local Power source for portable communication equipments, cameras, and VCRs.

•

Local Power source for home appliances.

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