RICOH R5322N Technical data

R5322N SERIES

120mA 2ch LDO REGULATORS

NO.EA-077-0606

OUTLINE

The R5322N Series are voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.

These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip enable function and prolong the battery life of each system. The line transient response and load transient response of the R5322N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment.

The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SOT-23-6W package, and include 2ch LDO regulators each, high density mounting of the ICs on boards is possible.

FEATURES

• Ultra-Low Supply Current.............................................. Typ. 75µA (VR1, VR2)

• Standby Current ............................................................Typ. 0.1µA (VR1, VR2)

• Output Voltage .............................................................. 1.5V to 4.0V

• Low Dropout Voltage.....................................................Typ. 0.15V (I

• High Ripple Rejection ...................................................Typ. 75dB (f=1kHz)

• High Output Voltage Accuracy ...................................... ±2.0%

• Low Temperature-Drift Coefficient of Output Voltage....Typ. ±100ppm/°C

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

• Small Packages ..........................................................SOT-23-6W

• Built-in chip enable circuit (A/B: active high)

• Built-in fold-back protection circuit ................................ Typ. 40mA (Current at short mode)

OUT=100mA ,VOUT=3.0V)

APPLICATIONS

• Power source for cellular phones such as GSM, CDMA and various kinds of PCS.

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

• Power source for battery-powered equipment.

1

R5322N

BLOCK DIAGRAMS

CE1

1

R5322NxxxA

6

V

OUT1

CE1

DD

V

CE2

1

2

3

Error Amp.

Vref

Current Limit

Error Amp.

Vref

Current Limit

R5322NxxxB

R1_1

R2_1

5

GND

R1_2

R2_2

VOUT2

4

6

OUT1

V

R1_2

R1_1

R2_1

5

4

GND

V

OUT2

VDD

CE2

2

3

Error Amp.

Vref

Error Amp.

Vref

Current Limit

R2_2

Current Limit

2

SELECTION GUIDE

The output voltage, mask option, and the taping type for the ICs can be selected at the user’s request.

The selection can be made with designating the part number as shown below;

R5322Nxxxx-xx-x ←Part Number

↑ ↑ ↑ ↑ a b c d

Code Contents

Setting combination of 2ch Output Voltage (V

a

b

c

d

Serial Number for Voltage Setting, Stepwise setting with a step of 0.1V in the range of

1.5V to 4.0V is possible for each channel.

Designation of Mask Option : A Version: without auto discharge function at OFF state. B Version: with auto discharge function at OFF state.

Designation of Taping Type : Ex. TR (refer to Taping Specifications; TR type is the standard direction.)

Designation of Composition of pin plating.

-F : Lead free plating

OUT) :

R5322N

3

R5322N

PIN CONFIGURATION

SOT-23-6W

OUT1

V

(mark side)

564

GND V

OUT2

CE1 V

123

DD

CE2

PIN DESCRIPTIONS

• SOT-23-6W

Pin No Symbol Pin Description

1 CE1 Chip Enable Pin 1

2 VDD Input Pin

3 CE2 Chip Enable Pin 2

4 VOUT2 Output Pin 2

5 GND Ground Pin

6 VOUT1 Output Pin 1

ABSOLUTE MAXIMUM RATINGS

Symbol Item Rating Unit

VIN Input Voltage 6.5 V

4

VCE Input Voltage (CE Pin)

VOUT Output Voltage

−0.3 to VIN + 0.3

IOUT1 Output Current 1 130 mA

IOUT2 Output Current 2 130 mA

PD Power Dissipation (SOT-23-6W) *

Topt Operating Temperature Range

Tstg Storage Temperature Range

Note1

430 mW

−40 to 85 °C

−55 to 125 °C

Note1: For Power Dissipation please refer to PACKAGE INFORMATION to be described.

V

R5322N

<

ELECTRICAL CHARACTERISTICS

• R5322NxxxA/B

Topt=25°C

Symbol Item Conditions Min. Typ. Max. Unit

IN=Set VOUT+1V,

VOUT Output voltage

V 1mA

IOUT

30mA

×0.98

×1.02

V

IOUT Output Current

∆VOUT/∆IOUT

Load regulation

VDIF Dropout Voltage

ISS Supply Current

Istandby Supply Current (Standby)

∆VOUT/∆VIN

Line regulation

RR Ripple Rejection

IN−VOUT=1.0V

V

IN=Set VOUT+1V,

IOUT

1mA

120mA

Refer to the ELECTRICAL CHARACTERISTICS

by OUTPUT VOLTAGE

IN=Set VOUT+1V

V

IN=VCE=Set VOUT+1V

V

Set V

OUT+0.5V

I

OUT=30mA

(In case that V

2.2V

f

=1kHz,Ripple 0.5Vp-p,

V

VIN

IN=Set VOUT+1V,IOUT=30mA

OUT

6.0))

VIN

1.6,

6.0V

VIN Input Voltage 2.2

∆VOUT/

∆Topt

Ilim Short Current Limit

Output Voltage Temperature Coefficient

OUT=30mA

I

−40°C

OUT=0V

V

Topt

85°C

RPD CE Pull-down Resistance 1.5 4.0 16.0

120 mA

12 40 mV

75 150

0.1 1.0

µA µA

0.05 0.20 %/V

75 dB

±100

6.0 V

ppm

/

°C

40 mA

M

VCEH CE Input Voltage “H” 1.5 VIN V

VCEL CE Input Voltage “L” 0.0 0.3 V

Ω

en Output Noise

RLOW

Low Output Nch Tr. ON Resistance (of B version)

BW=10Hz to 100kHz

VCE=0V

• Electrical Characteristics by Output Voltage

Output Voltage

VOUT (V)

<

1.5V

1.7V

1.9V

2.1V

2.8V

VOUT < 1.6V 0.36 0.70

= <

VOUT < 1.8V 0.30 0.50

= <

VOUT < 2.0V 0.28 0.45

= <

VOUT < 2.7V 0.24 0.40

= <

VOUT < 4.0V

=

Condition Typ. Max.

OUT = 120mA

I

30

70

Dropout Voltage VDIF(V)

0.18 0.30

µVrms

Ω

5

R5322N

TYPICAL APPLIATION

IN

(External Components) Output Capacitor; Tantalum Type

C1

3

CE2

R5322N

Series

DD

2

V

1

CE1

OUT2

V

GND

OUT1

V

4

C

5

6

OUT2

3

OUT1

2

C

6

=

TEST CIRCUIT

R5322N

CE2 V

3

R5322N

2

VDD

Series

GND

OUT2

4

C3

V

OUT2

I

V

5

SS

I

CE2 V

3

R5322N

2

VDD

Series

OUT2

GND

4

C3

5

A

C1

CE1 V

1

OUT1

6

C2

V

OUT1

I

C1

CE1 V

1

OUT1

6

V

1

C

Tantal 1.0µF

=

2

3

C

Tantal 2.2µF

=

1

C

=

2

3

C

=

Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit

Pulse

Generator

PG

CE2 V

3

R5322N

2

VDD

CE1 V

1

Series

GND

OUT2

OUT1

CE2 V

3

2

R5322N

Series

VDD

4

C3

OUT2

I

5

CE1 V

6

C2

I

OUT1

C1

1

OUT2

GND

OUT1

4

C3

5

OUT2b

I

6

OUT1b

I

C2

1.0µF

2.2µF

=

OUT2a

I

OUT1a

1

1.0µF

C

2

3

C

2.2µF

=

2

3

C

2.2µF

Fig.3 Ripple Rejection, Line Transient Response Fig.4 Load Transient Response Test Circuit Test Circuit

7

R5322N

TYPICAL CHARACTERISTICS

1) Output Voltage vs. Output Current

1.5V (VR1) 1.5V (VR2)

1.6

1.4

1.2

1.0

0.8

0.6

IN=1.8V

V

VIN=3.5V

VIN=2.0V

VIN=2.5V

0.4

Output V oltage VOUT(V)

0.2

0.0

0.00 0.10 Output Current IOUT(A)

0.300.20

2.8V (VR1) 2.8V (VR2)

3.0

1.6

1.4

(V)

1.2

OUT

1.0

0.8

0.6

0.4

Output V oltage V

0.2

0.0

0.00 0.10 0.150.05

3.0

IN

=1.8V

V

VIN=3.5V

Output Current I

OUT

(A)

VIN=2.0V

VIN=2.5V

0.300.20 0.25

IN

=3.1V

(V)

OUT

2.5

2.0

V

IN

=3.1V

VIN=3.3V

(V)

OUT

2.5

2.0

VIN=4.8V

1.5

1.0

0.5

Output Voltage V

0.0

0.00 0.10 0.150.05 Output Current I

VIN=3.5V

OUT

(A)

0.300.20 0.25

1.5

1.0

0.5

Output Voltage V

0.0

0.00 0.10 0.150.05

V

VIN=3.3V

VIN=4.8V

VIN=3.5V

Output Current I

4.0V (VR1) 4.0V (VR2)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

Output V oltage VOUT(V)

0.5

0.0

0.00 0.10 0.150.05

V

IN=4.3V

VIN=4.5V

VIN=6.0V

Output Current I

VIN=5.0V

OUT(A)

0.300.20 0.25

4.5

4.0

(V)

3.5

OUT

3.0

2.5

2.0

1.5

1.0

Output Voltage V

0.5

0.0

0.00 0.10 0.150.05

IN

=4.3V

V

VIN=4.5V

VIN=6.0V

Output Current I

OUT

(A)

VIN=5.0V

OUT

(A)

0.300.20 0.25

8