R5326K Series
Automatic Mode Shift Low Voltage Dual 150mA LDO
No.EK-138-121001 Dual CMOS LDO Regulator
The R5326K Series are
CMOS-based aut o mode sw itching du al LDO regulators featuring 150 mA ou tput. In auto sw itching mode, the
operation can sw itch automatically to a fast response mode or a low power mode of the ECO function acc ording to output current.
(Automatic switching to fast response mode under IOUT > 3mA conditions or to low power mode under IOUT > 0.6mA conditions.) In low
power mode, supply current is as low as 5.5μA. In fast response mode, ripple rejection is 70dB and noise is low. R5326K
requires
neither ECO pin for switching mode nor microcontroller pin. R5326K supports low voltage, featuring input voltage from 1.4V and
output voltage from 0.8V. Standby mode and auto-discharge function are also available (see the Selection Guide). Ceramic capacitors
can be used.
FEATURES
• Supply Current (ISS2)·······················Typ. 50μA × 2 (Fast mode, VIN=VSET+1.0V)
• Supply Current (ISS1)·······················Typ. 5.5 μA × 2 (Low power mode, same as above)
• Standby Current (Istandby) ·················Typ. 0.1μA × 2 (VIN=6.0V, CE1/CE2="L")
• Dropout Voltage (VDIF) ····················Typ. 0.19V (IOUT=150mA, VSET=2.8V)
• Ripple Rejection (RR)·····················Typ. 70dB (f=1kHz), T y p. 60dB (f=10kHz)
• Input Voltage Range (VIN)···············1.4V to 6.0V
• Output Voltage Range (VOUT)··········0.8V to 4.2V∗ (Internally fixed)
• Output Voltage Accuracy················± 1%
• Temp. coeff. of Output Voltage·······Typ. ± 100ppm/°C
• Line Regulation·······························Typ. 0.02%/V
(
Fast mode
)
• Fold-back Protection Circuit ···········Current limit Typ. 50mA
• Auto-discharge Function·················B Version
• Package··········································DFN(PLP)1820-6
• Ceramic capacitors can be used.···1μF to 3.3μF
∗) For information about combination of output voltage, please check our website.
BLOCK DIAGRAMS
R5326KxxxA R5326KxxxB
(Without Auto- d ischarge fu ncti on) (With Auto-disc harge fun ctio n)
CE1
GND
VOUT1
Vref
Current Limit
Error
Amp. R1_1
R2_1
CE2
Vref
Current Limit
Error
Amp.
R1_2
R2_2
VDD
VOUT2
CE1
GND
V
OUT1
Vref
Current Limit
Error
Amp. R1_1
R2_1
CE2
Vref
Current Limit
Error
Amp.
R1_2
R2_2
V
DD
V
OUT2
SELECTION GUIDE
Halogen Free
Package
Q'ty per Reel
Part No.
DFN(PLP)1820-6 5,000 pcs
R5326K
.
xxx∗
-TR
.
xxx
: Specify a combination of output voltage for each output using serial
numbers.
.
∗
: Select from (
.
A
.
) without auto-discharge function or
(
.
B
.
) with auto-discharge function.
PACKAGE TYPICAL CHARACTERISTIC
DFN(PLP)1820-6
∗
Top View Bottom View
6 5 4
1 2 3
4 5 6
3 2 1
1 VOUT2
2 VDD
3 VOUT1
4 CE1
5 GND
6 CE2
R5326K (VR1/VR2) Dropout Voltage vs. Output Current
∗) The tab is substrate level (GND).
APPLICATIONS
• Power source for hand-held communication equipment, cameras, and VCRs
• Power source for home appliances • Power source for battery-powered equipment
0 100 1255025 75 150
85
°C
25
°C
-40
°C
Output Current IOUT (mA)
Dropout Voltage VDIF (V)
0
0.20
0.25
0.05
0.10
0.15
0.30
VSET=2.8V
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
http://www.ricoh.com/LSI/
For the conservation of the global environment, Ricoh is advancing the decrease of the negative environmental impact material.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
Basically after Apr. 1, 2012, we will ship out the Power Management ICs of the Halogen Free products only. (Ricoh Halogen Free products are
also Antimony Free.)
Halogen Free
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Higashi-ShinagawaOffice(InternationalSales)
3-32-3,Higashi-Shinagawa,Shinagawa-ku,Tokyo140-8655,Japan
Phone:+81-3-5479-2857Fax:+81-3-5479-0502
RICOHEUROPE(NETHERLANDS)B.V.
●SemiconductorSupportCentre
NieuwKronenburgProf.W.H.Keesomlaan1,1183DJ,Amstelveen,TheNetherlands
P.O.Box114,1180ACAmstelveen
Phone:+31-20-5474-309Fax:+31-20-5474-791
RICOHELECTRONICDEVICESKOREACo.,Ltd.
11floor,Haesung1building,942,Daechidong,Gangnamgu,Seoul,Korea
Phone:+82-2-2135-5700Fax:+82-2-2135-5705
RICOHELECTRONICDEVICESSHANGHAICo.,Ltd.
Room403,No.2Building,690#BiBoRoad,PuDongNewdistrict,Shanghai201203,
People'sRepublicofChina
Phone:+86-21-5027-3200Fax:+86-21-5027-3299
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Taipeioffice
Room109,10F-1,No.51,HengyangRd.,TaipeiCity,Taiwan(R.O.C.)
Phone:+886-2-2313-1621/1622Fax:+886-2-2313-1623
1.Theproductsandtheproductspecificationsdescribedinthisdocumentaresubjecttochangeor
discontinuationofproductionwithoutnoticeforreasons
suchasimprovement.Therefore,before
decidingtousetheproducts,pleaserefertoRicohsalesrepresentativesforthelatest
informationthereon.
2.Thematerialsinthisdocumentmaynotbecopiedorotherwisereproducedinwholeorinpart
withoutpriorwrittenconsentofRicoh.
3.Pleasebesuretotakeanynecessaryformalitiesunderrelevantlawsorregulationsbefore
exportingorotherwisetakingoutofyourcountrytheproductsorthetechnicalinformation
describedherein.
4.Thetechnicalinformationdescribedinthisdocumentshowstypicalcharacteristicsofand
exampleapplicationcircuitsfortheproducts.Thereleaseofsuchinformationisnottobe
construedasawarrantyoforagrantoflicenseunderRicoh'soranythirdparty'sintellectual
propertyrightsoranyotherrights.
5.
Theproductslistedinthisdocumentareintendedanddesignedforuseasgeneralelectronic
componentsinstandardapplications(officeequipment,telecommunicationequipment,
measuringinstruments,consumerelectronicproducts,amusementequipmentetc.).Those
customersintendingtouse
aproductinanapplicationrequiringextremequalityandreliability,
forexample,inahighlyspecificapplicationwherethefailureormisoperationoftheproduct
couldresultinhumaninjuryordeath(aircraft,spacevehicle,nuclearreactorcontrolsystem,
trafficcontrolsystem,automotiveand
transportationequipment,combustionequipment,safety
devices,lifesupportsystemetc.)shouldfirstcontactus.
6.Wearemakingourcontinuousefforttoimprovethequalityandreliabilityofourproducts,but
semiconductorproductsarelikelytofailwithcertainprobability.Inordertopreventanyinjuryto
personsordamagestopropertyresultingfromsuchfailure,customersshouldbecarefulenough
toincorporatesafetymeasuresintheirdesign,suchasredundancyfeature,firecontainment
featureandfail-safefeature.Wedonotassumeanyliability
orresponsibilityforanylossor
damagearisingfrommisuseorinappropriateuseoftheproducts.
7.Anti-radiationdesignisnotimplementedintheproductsdescribedinthisdocument.
8.
PleasecontactRicohsalesrepresentativesshouldyouhaveanyquestionsorcomments
concerningtheproductsorthetechnicalinformation.