RICOH R5326x Technical data

R5326x SERIES

Automatic Mode Shift Dual 150mA LDO

NO.EA-138-120404

OUTLINE

The R5326x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, Typ. 5.5μA low supply current, and remarkably improved transient response compared with the conventional low supply current voltage regulators. The supply current of IC itself is automatically shifts between fast mode and low power mode depending on the load current. (The current threshold is fixed internally.) Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting the output voltage, a current limit circuit for preventing from the destruction by an over current, and so on.

The chip enable function realizes the standby mode with ultra low supply current.

Since the packages for these ICs are SOT-23-6 (Discontinued) and DFN(PLP)1820-6, and chip size package, WLCSP-6-P1 (Limited), dual LDO regulators are included in each package, high density mounting of the ICs on boards is possible.

FEATURES

• Supply Current (Low Power Mode)...................		Typ. 5.5μA×2 (VR1&VR2) (IOUT=0mA)
• Supply Current (Fast Mode)..............................		Typ. 50μA×2 (VR1&VR2) (IOUT=10mA)
• Standby Current ................................................		Typ. 0.1μA (VR1&VR2)
• Dropout Voltage ................................................		Typ. 0.19V (IOUT=150mA, VOUT=2.8V)
• Ripple Rejection................................................		Typ. 70dB (f=1kHz)
		Typ. 60dB (f=10kHz)
•	Input Voltage Range .........................................	1.4V to 6.0V
•	Output Voltage Range.......................................	0.8V to 4.2V (0.1V steps)
		(For details, please refer to MARK INFORMATIONS.)
• Output Voltage Accuracy...................................		±1.0% (VOUT>1.5V)
•	Line Regulation .................................................	Typ. 0.02%/V
•	Packages .........................................................	WLCSP-6-P1 (Limited), DFN(PLP)1820-6,
		SOT-23-6 (Discontinued)
•	Built-in fold-back protection circuit ....................	Typ. 50mA (Current at short mode)

• Ceramic Capacitor is recommended. ..............1.0μF to 3.3μF

(Depending on VIN and set VOUT. Refer to the electrical characteristics table.)

APPLICATIONS

•Power source for handheld communication equipment.

•Power source for electrical appliances such as cameras, VCRs and camcorders.

•Power source for battery-powered equipment.

1

R5326x

BLOCK DIAGRAMS

	R5326xxxxA
CE1	Error	VOUT1
	Amp.
		R1_1
	Vref	R2_1
	Current Limit
VDD		GND
	Error
	Amp.	R1_2

	Vref	R2_2
		Current Limit
CE2		VOUT2

		R5326xxxxB
CE1		Error		VOUT1
		Amp.
				R1_1
	Vref			R2_1
		Current Limit
VDD				GND
		Error
		Amp.	R1_2
	Vref		R2_2
		Current Limit
CE2				VOUT2

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R5326x

SELECTION GUIDE

The output voltage, auto discharge function, package for the ICs can be selected at the user’s request.

Product Name	Package	Quantity per Reel	Pb Free	Halogen Free
R5326Zxxx -E2-F	WLCSP-6-P1 (Limited)	5,000 pcs	Yes	Yes
R5326Kxxx -TR	DFN(PLP)1820-6	5,000 pcs	Yes	Yes
R5326Nxxx -TR-FE	SOT-23-6 (Discontinued)	3,000 pcs	Yes	Yes

xxx : The combination of output voltage for each channel can be designated by serial numbers. (from 001) The output voltage for each channel can be set in the range from 0.8V to 4.2V in 0.1V steps.

(For details, please refer to MARK INFORMATIONS.)

: The auto discharge function at off state are options as follows.

(A) without auto discharge function at off state

(B) with auto discharge function at off state

The products scheduled to be discontinued (be sold to limited customer) : "Limited"

These products will be discontinued in the future. You can not select these products newly.

We will provide these products to the customer who has been using or has ordered them before. But we recommend changing to other products as soon as possible.

3

R5326x

PIN CONFIGURATIONS

WLCSP-6-P1					DFN PLP 1820-6
Mark Side		Bump Side	Top View			Bottom View
			6	5	4	4	5	6
1	6	6	1
2	5	5	2
3	4	4	3
			1	2	3	3	2	1

SOT-23-6

6 5 4

(mark side)

1

2

3

PIN DESCRIPTIONS

• WLCSP-6-P1 (Limited), SOT-23-6 (Discontinued)

Pin No	Symbol	Pin Description
1	VOUT1	Output Pin 1
2	VDD	Input Pin
3	VOUT2	Output Pin 2
4	CE2	Chip Enable Pin 2 ("H" Active)
5	GND	Ground Pin
6	CE1	Chip Enable Pin 1 ("H" Active)

• DFN(PLP)1820-6

Pin No	Symbol	Pin Description
1	VOUT2	Output Pin 2
2	VDD	Input Pin
3	VOUT1	Output Pin 1
4	CE1	Chip Enable Pin 1 ("H" Active)
5	GND	Ground Pin
6	CE2	Chip Enable Pin 2 ("H" Active)

) Tab is GND level. (They are connected to the reverse side of this IC.)

The tab is better to be connected to the GND, but leaving it open is also acceptable.

4

			R5326x
ABSOLUTE MAXIMUM RATINGS
Symbol	Item	Rating	Unit
VIN	Input Voltage	6.5	V
VCE	Input Voltage (CE Pin)	−0.3 to 6.5	V
VOUT	Output Voltage	−0.3 to VIN+0.3	V
IOUT1, IOUT2	Output Current	200	mA
	Power Dissipation (WLCSP-6-P1) *(Limited)	633
PD			mW
	Power Dissipation (DFN(PLP)1820-6) *	880
	Power Dissipation (SOT-23-6) * (Discontinued)	420
Topt	Operating Temperature Range	−40 to 85	°C
Tstg	Storage Temperature Range	−55 to 125	°C

) For Power Dissipation, please refer to PACKAGE INFORMATION.

ABSOLUTE MAXIMUM RATINGS

Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured.

RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)

All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.

5

R5326x

ELECTRICAL CHARACTERISTICS

• R5326xxxxA/B

VR1/VR2

Topt=25°C

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

V −V

=1V

V

>

1.5V

×

0.99

×

1.01

V

VOUT

Output Voltage

IN

OUT

OUT

IOUT=1mA

VOUT =< 1.5V

−15

+15

mV

IOUT

Output Current

VIN−VOUT=1V

150

mA

VOUT/ IOUT

Load Regulation

VIN−VOUT=1V

80

mV

1mA =< IOUT =< 150mA

0.8V =< VOUT<0.9V

0.62

0.87

0.9V =< VOUT<1.0V

0.58

0.78

1.0V =< VOUT<1.2V

0.48

0.69

VDIF

Dropout Voltage

I

OUT=

150mA

1.2V = VOUT<1.5V

0.40

0.59

V

<

1.5V =< VOUT<2.0V

0.31

0.48

2.0V =< VOUT<2.8V

0.22

0.37

2.8 =< VOUT

0.19

0.27

ISS1

Supply Current

VIN−VOUT=1V, IOUT=0mA

5.5

16

μA

(Low Power Mode)

ISS2

Supply Current (Fast Mode)

VIN−VOUT=1V, IOUT=10mA

50

105

μA

Istandby

Standby Current

VIN=6V, VCE1=VCE2=GND

0.1

1.0

μA

IOUTL

Low Power Mode

VIN−VOUT=1V,

0.6

mA

Current threshold

IOUT=30mA to 1μA

IOUTH

Fast Response Mode

VIN−VOUT=1V,

3

mA

Current threshold

IOUT=1μA to 30mA

VOUT/ VIN

Line Regulation

VOUT+0.5V =< VIN =< 6V

±0.02

±0.2

%/V

IOUT=30mA

( VIN => 1.8V)

Ripple 0.2Vp-p,

70

VIN−VOUT=1V,

f=1kHz

RR

Ripple Rejection

IOUT=30mA

dB

(In case that

VOUT<1.5V,

f=10kHz

60

VIN−VOUT=1.5V)

VIN

Input Voltage

1.4

6.0

V

VOUT/ Topt

Output Voltage

IOUT=30mA,

±100

ppm/

Temperature Coefficient

−40°C =< Topt =< 85°C

°C

ISC

Short Current Limit

VOUT=0V

50

mA

IPD

CE Pull-down Current

0.15

0.30

0.45

μA

VCEH

CE Input Voltage "H"

1.0

6.0

V

VCEL

CE Input Voltage "L"

0

0.4

V

en

Output Noise

BW=10Hz to 100kHz

30

μVrms

RLOW

Low Output Nch Tr.

40

Ω

ON Resistance (of B version)

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R5326x

TYPICAL APPLIATION

	CE2	VOUT2	OUT2
		R5326x	C3
		Series
IN
	VDD	GND
	C1	VOUT1	OUT1
	CE1
			C2

(External Components)

Capacitor; Ceramic Type

C1 : 1.0μF Ceramic

C2, C3 : Refer to the following table

Recommended Ceramic capacitor for Output (C2, C3)

	Output Voltage Range	Minimum Input Voltage
		1.4V =< VIN < 1.65V	1.65V =< VIN
	0.8V =< VOUT < 1.2V	3.3μF or more	2.2μF or more
	1.2V =< VOUT =< 4.2V	3.3μF or more	1.0μF or more

Output Capacitors

3.3μF (Murata) GRM219B31A335KE18B

2.2μF (Murata) GRM155B30J225M

1.0μF (Murata) GRM155B31A105KE15

7

R5326x

TECHNICAL NOTES

When using these ICs, consider the following points:

Mounting on PCB

Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor with a capacitance value as much as 1.0μF or more as C1 between VDD and GND pin, and as close as possible to the pins.

Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as short as possible.

Phase Compensation

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use capacitors C2 and C3 which are shown below table “Recommended Ceramic capacitor for output “If you use a tantalum type capacitor and ESR value of the capacitor is Iarge, output might be unstable. Evaluate your circuit with considering frequency characteristics.

TEST CIRCUITS
	CE2	VOUT2	C3	VOUT2	IOUT2		CE2	VOUT2	C3
	R5326x						R5326x
				V
	Series						Series
	VDD	GND				ISS	VDD	GND
						A
C1	CE1	VOUT1	C2	VOUT1	IOUT1	C1	CE1	VOUT1	C2
				V
C1=Ceramic 1.0μF						C1=Ceramic 1.0μF
C2,C3=refer to the term of the external capacitors						C2,C3=refer to the term of the external capacitors
	Fig.1 Standard test Circuit					Fig.2 Supply Current Test Circuit

	CE2	VOUT2	C3	IOUT2
	R5326x
	Series
	VDD	GND
Pulse
Generator	CE1	VOUT1
PG			C2	IOUT1

C2,C3= refer to the term of the external capacitors

Fig.3 Ripple Rejection, Line Transient Response

Test Circuit

		CE2	VOUT2	C3
		R5326x
		Series			IOUT2a
		VDD	GND
		CE1	VOUT1	IOUT2b
	C1			IOUT1b	IOUT1a
				C2

C1=Ceramic 1.0μF

C2,C3= refer to the term of the external capacitors

Fig.4 Load Transient Response Test Circuit

8

R5326x

TYPICAL CHARACTERISTICS

1) Output Voltage vs. Output Current

		0.8V(VR1/VR2)
	0.9
OUT(V)	0.8
	0.7
	0.6
V
Voltage	0.5				VIN=1.4V
	0.4				VIN=1.5V
					VIN=1.6V
Output	0.3
	0.2				VIN=1.8V
					VIN=2.8V
	0.1
					VIN=3.8V
	0
	0	100	200	300	400	500
		Output Current IOUT(mA)

		2.8V(VR1/VR2)
	3.0
OUT(V)	2.5
	2.0
V
Voltage	1.5
Output	1.0				VIN=3.1V
					VIN=3.8V
	0.5				VIN=4.8V
	0
	0	100	200	300	400	500
		Output Current IOUT(mA)

2) Input Voltage vs. Output Voltage

			0.8V(VR1/VR2)
	1.0
OUT(V)	0.9
	0.7
	0.8
V	0.6
Voltage
	0.4
	0.5
Output	0.3				IOUT=1mA
					IOUT=10mA
	0.2				IOUT=100mA
	0.1				IOUT=150mA
	0
	0	1	2	3	4	5	6
			Input Voltage VIN(V)

		1.5V(VR1/VR2)
	1.6
OUT(V)	1.4
	1.2
V	1.0
Voltage
	0.8
	0.6
Output					VIN=1.8V
	0.4				VIN=2.5V
	0.2				VIN=3.5V
	0
	0	100	200	300	400	500
		Output Current IOUT(mA)

		4.0V(VR1/VR2)
	4.5
OUT(V)	4.0
	3.5
	3.0
V
Voltage	2.5
	2.0
Output	1.5				VIN=4.3V
	1.0				VIN=5.0V
	0.5				VIN=6.0V
	0
	0	100	200	300	400	500
		Output Current IOUT(mA)

			1.5V(VR1/VR2)
(V)OUT	1.8
	1.5
V	1.2
Voltage	0.9
Output	0.6				IOUT=1mA
					IOUT=100mA
	0.3
					IOUT=10mA
					IOUT=150mA
	0
	0	1	2	3	4	5	6
			Input Voltage VIN(V)

9