RICOH R5326K Technical data

R5326K Series

Automatic Mode Shift Low Voltage Dual 150mA LDO

The R5326K Series are CMOS-based auto mode switching dual LDO regulators featuring 150mA output. In auto switching mode, the operation can switch automatically to a fast response mode or a low power mode of the ECO function according 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=SET VOUT+1.0V)	• Temp. coeff. of Output Voltage ·······Typ. ± 100ppm/°C
• Supply Current (ISS1)·······················Typ. 5.5μA ×2 (Low power mode, same as above)	• Line Regulation·······························Typ. 0.02%/V (Fast mode)
• Standby Current (Istandby) ·················Typ. 0.1μA ×2 (VIN=6.0V, CE1/CE2="L")	• Fold-back Protection Circuit ···········Current limit Typ. 50mA
• Dropout Voltage (VDIF) ····················Typ. 0.19V (IOUT=150mA, VOUT=2.8V)	• Auto-Discharge function ·················B Version
• Ripple Rejection (RR)·····················Typ. 70dB (f=1kHz), Typ. 60dB (f=10kHz)	• Package··········································DFN(PLP)1820-6
• Input Voltage Range (VIN)···············1.4V to 6.0V	• Ceramic capacitors can be used. ···1μF to 3.3μF
• Output Voltage Range (VOUT)··········0.8V to 4.2V (internally fixed)

• Output Voltage Accuracy ················± 1%

		) For information about combination of output voltage, please check our website.
	BLOCK DIAGRAMS
	R5326KxxxA	R5326KxxxB
	(Without Auto-Discharge function)	(With Auto-Discharge function)

CE1	VOUT1
Error	R1_1
Amp.
Vref	R2_1
Current Limit
VDD	GND
	R1_2
Error
Amp.
Vref	R2_2
Current Limit
CE2	VOUT2

CE1	VOUT1
Error	R1_1
Amp.
Vref	R2_1
Current Limit
VDD	GND
	R1_2
Error
Amp.
Vref	R2_2
Current Limit
CE2	VOUT2

SELECTION GUIDES

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.

		PACKAGES (Top View)			TYPICAL CHARACTERISTIC
					R5326K (VR1/VR2) Dropout Voltage vs. Output Current
		DFN(PLP)1820-6

6	5	4
1	2	3
1	VOUT2
2	VDD
3	VOUT1
4	CE1
5	GND
6	CE2

						VOUT=2.8V
	0.30
DIF(V)			85°C
	0.25		25°C
			-40°C
V	0.20
Voltage
	0.15
Dropout	0.10
	0.05
	0
	0	25	50	75	100	125	150

) The tab is substrate level (GND).	Output Current IOUT(mA)
APPLICATIONS
• Power source for hand-held communication equipment, cameras, and VCRs	• Power source for battery-powered equipment
• Power source for home appliances

No.EK-138-120403

Dual CMOS LDO Regulator

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