RP173K251B-TR [RICOH]

Output Current Typ. 150mA;


型号：	RP173K251B-TR
厂家：	RICOH ELECTRONICS DEVICES DIVISION
描述：	Output Current Typ. 150mA 光电二极管输出元件调节器
文件：	总22页 (文件大小：847K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RP173x SERIES

11V Input 150mA LDO

OUTLINE

NO.EA-256-111020

The RP173x Series are CMOS-based voltage regulator ICs featuring 150 mA output and low supply current of

Typ.2.0μA. Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage

setting, a current limit circuit, a chip enable circuit and a Reverse Current Protection Circuit. RP173x Series are

suitable for the power source such as the equipment being in the standby-mode. A version with /CE input pin has

reduced CE pull-up resistance to make its supply current ultra low.

The RP173x Series have Max.11V Input voltage and are applicable to the portable communication equipment

that require the 2-cell Li-ion battery. Also they are applicable to the non-portable communication equipments. As

this series includes Reverse Current Protection Circuit, there is little leakage current, if it's used as back-up

circuit.

Since the packages for these ICs are the SOT-23-5 package, SC-88A, or DFN(PLP)1010-4 of 1mm square,

high density mounting of the ICs on boards is possible.

FEATURES

• Output Current ............................................................. Typ. 150mA

• Supply Current............................................................. Typ. 2.0μA

• Standby Current........................................................... Typ. 0.2μA

• Input Voltage Range .................................................... 2.5V to Set V^OUT+6.5V (Max.11V)

• Output Voltage Range.................................................. 1.2V to 5.5V (0.1V steps)

(For other voltages, please refer to MARK INFORMATIONS.)

• Dropout Voltage ........................................................... Typ. 0.13V ( IOUT=30mA, VOUT=3.0V)

Typ. 0.90V ( I^OUT=150mA, VOUT=3.0V)

• Output Voltage Accuracy.............................................. ±1.0%(1.5V < V^OUT≤ 5.5V, Topt=25°C)

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

• Line Regulation............................................................ Typ. 0.02%/V

• Packages ..................................................................... DFN(PLP)1010-4, SC-88A, SOT-23-5

• Built-in Reverse Current Protection Circuit

• Short Current Limit....................................................... Typ. 45mA

• Built-in Peak Current Limit Circuit

• Output capacitors......................................................... 0.1μF or more

APPLICATIONS

• Power source for portable communication equipments.

• Power source for battery-powerd equipments.

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

• Power source for digital home appliances.

RP173x

BLOCK DIAGRAMS

RP173xxxxA

RP173xxxxB

VDD

VOUT

Vref

Current Limit

Reverse

Detector

Reverse

Detector

GND

(Pull-up resistance is not built-in.)

RP173xxxxD

VDD

VOUT

Vref

Current Limit

Reverse

Detector

GND

SELECTION GUIDE

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

Product Name

RP173Kxx1∗-TR

Package

DFN(PLP)1010-4

SC-88A

Quantity per Reel

10,000 pcs

Pb Free

Yes

Halogen Free

Yes

3,000 pcs

Yes

RP173Qxx2∗-TR-FE

RP173Nxx1∗-TR-FE

SOT-23-5

3,000 pcs

Yes

xx: The output voltage can be designated in the range of 1.2V (12) to 5.5V (55) in 0.1V steps.

(For other voltages, please refer to MARK INFORMATIONS.)

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

(A) "L" acrive, without auto discharge function at off state (Pull-up resistance is not built-in.)

(B) "H" active, without auto discharge function at off state

(D) "H" active, with auto discharge function at off state

RP173x

PIN CONFIGURATIONS

•

DFN(PLP)1010-4

•

SC-88A

•

SOT-23-5

Top View

Bottom View

∗

(mark side)

PIN DESCRIPTIONS

zDFN(PLP)1010-4

Pin No.

Symbol

VOUT

Description

Output Pin

GND

Ground Pin

Chip Enable Pin

Input Pin

/CE

VDD

∗) 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.

zSC-88A

Pin No.

Symbol

Description

Chip Enable Pin

No Connection

Ground Pin

Output Pin

/CE

GND

VOUT

VDD

Input Pin

zSOT-23-5

Pin No.

Symbol

VDD

Description

Input Pin

GND

Ground Pin

Chip Enable Pin

No Connection

Output Pin

/CE

VOUT

RP173x

ABSOLUTE MAXIMUM RATINGS

Symbol

Item

Rating

Unit

VIN

Input Voltage

VCE

Input Voltage (CE pin)

Output Voltage

VOUT

IOUT

−0.3 to 6.0

165

Output Current

Power Dissipation

(DFN(PLP)1010-4)*

(SC-88A)*

400

380

(SOT-23-5)*

420

Topt

Tstg

Operating Temperature Range

Storage Temperature Range

−40 to +85

−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.

RP173x

ELECTRICAL CHARACTERISTICS

Unless otherwise noted,VIN=Set VOUT +1.0V(VOUT >1.5), IOUT=1mA,CIN=COUT=0.1μF.

The values in

are applicable under the condition of −40°C ≤ Topt ≤ 85°C.

• RP173xxxxA

Topt=25°C

Symbol

Item

Conditons

Min.

×0.99

−15

Typ.

Max.

×1.01

Unit

VOUT＞1.5V

Topt=25°C

V^OUT≤ 1.5V

VOUT＞1.5V

V^OUT≤ 1.5V

VOUT

Output Voltage

×0.982

×1.018

−40°C ≤ Topt ≤ 85°C

−

IOUT

ΔVOUT/ΔIOUT

VDIF

Output Current

Load Regulation

Dropout Voltage

Supply Current

150

0.1mA ≤ I^OUT≤ 150mA

−30

−3

Refer to the "Dropout Voltage"

2.0

ISS

3.7

0.6

I^OUT=0mA

μA

V^IN=VIN（Max.）

V^CE=0V

Istandby

Standby Current

0.2

Set V^OUT+0.5V ≤ VIN ≤ VIN（Max.）

When V^OUT≤ 2.0V,

2.5V ≤ V^IN≤ VIN（Max.）

Load Regulation

0.02

0.20

%/V

ΔVOUT/ΔVIN

ｆ=1kHz,

Rippke 0.2Vp−p,I^OUT=10mA

※When V^OUT＜2.0V,VIN=3.0V

Ripple Rejection

Input Voltage

1.2 ≤ VOUT < 4.5

4.5 ≤ V^OUT≤ 5.5

2.5

Vset+6.5

VIN

ppm

/℃

Output Voltage

Temperature Coefficient

ΔVOUT/ΔTopt

−40°C ≤ Topt ≤ 85°C

V^OUT=0V

±100

ISC

Short Current Limit Circuit

VCEH

VCEL

IREV

1.7

Input Voltage"H"

Input Voltage"L"

0.8

Reverse Current

0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V

0 ≤ V^IN≤ 11.0V, VOUT ≥ 1.5V

0.16

μA

Reverse Current

Protection Mode

Detection Offset,

V^REV=VDD−VOUT

Reverse Current

Protection Mode

Release Offset

VREV_DET*

VREV_REL*

100

120

0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V

The values in

have been tested and guaranteed by Design Engineering.

All of units are tested and specified under the pulse load conditions such that Tj≈Topt 25°C except for Ripple

Rejection and Output Voltage Temperature Coefficient.

*) The operation coverage of the Reverse Current Protection Circuit is VOUT ≥ 1.5V. However, under the

condition of VIN=VOUT=0V, always the Reverse Current Protection Circuit is operating.

RP173x

Unless otherwise noted,VIN=Set VOUT +1.0V(VOUT >1.5), IOUT=1mA, CIN=COUT=0.1μF.

The values in

are applicable under the condition of −40°C ≤ Topt ≤ 85°C.

• RP173xxxxB/D

Topt=25°C

Symbol

Item

Conditons

Min.

×0.99

−15

Typ.

Max.

×1.01

Unit

VOUT＞1.5V

Topt=25°C

V^OUT≤ 1.5V

VOUT＞1.5V

V^OUT≤ 1.5V

VOUT

Output Voltage

×0.982

×1.018

−40°C ≤ Topt ≤ 85°C

−

IOUT

ΔVOUT/ΔIOUT

VDIF

Output Current

Load Regulation

Dropout Voltage

Supply Current

150

0.1mA ≤ I^OUT≤ 150mA

−30

−3

Refer to the "Dropout Voltage"

2.0

ISS

3.7

0.6

I^OUT=0mA

μA

V^IN=VIN_Max.

V^CE=0V

Istandby

Standby Current

Load Regulation

0.2

Set V^OUT+0.5V≦VIN≦VIN_Max.

When V^OUT≤ 2.0V,

2.5V ≤ V^IN≤ Set VOUT+6.5V

0.02

0.20

%/V

ΔVOUT/ΔVIN

ｆ=1kHz,

Ripple Rejection

Input Voltage

Rippke 0.2Vp−p,I^OUT=10mA

※When V^OUT＜2.0V,VIN=3.0V

1.2 ≤ VOUT < 4.5

4.5 ≤ V^OUT≤ 5.5

2.5

Vset+6.5

VIN

ppm

/℃

Output Voltage

Temperature Coefficient

ΔVOUT/ΔTopt

−40°C ≤ Topt ≤ 85°C

V^OUT=0V

±100

ISC

IPD

Short Current Limit Circuit

CE Pull-down Current

CE Input Voltage"H"

CE Input Voltage"L"

Reverse Current

μA

0.30

0.90

VCEH

VCEL

IREV

1.7

0.8

0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V

0 ≤ V^IN≤ 11.0V, VOUT ≥ 1.5V

0.16

μA

Reverse Current

Protection Mode

Detection Offset,

V^REV=VDD−VOUT

Reverse Current

Protection Mode

Release Offset

VREV_DET*

100

120

VREV_REL*

RLOW

0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V

Autodischarge Nch Tr.

ON Resistance

（D Version only）

380

V^IN=7.0V, VCE=0V

The values in

have been tested and guaranteed by Design Engineering.

All of units are tested and specified under the pulse load conditions such that Tj≈Topt=25°C except for Ripple

Rejection and Output Voltage Temperature Coefficient.

*) The operation coverage of the Reverse Current Protection Circuit is VOUT ≥ 1.5V. However, under the

condition of VIN=VOUT=0V, always the Reverse Current Protection Circuit is operating.

RP173x

• Dropout Voltage

Topt=25°C

Dropout Voltage VDIF (V)

Output Voltage

V^OUT(V)

Condition

Typ.

1.68

1.63

1.48

1.16

0.90

0.61

0.39

Max.

2.59

2.49

2.23

2.19

1.47

1.05

0.76

1.2 ≤ VOUT < 1.3

1.3 ≤ VOUT < 1.5

1.5 ≤ VOUT < 1.8

1.8 ≤ VOUT < 2.3

2.3 ≤ VOUT < 3.0

3.0 ≤ VOUT < 4.0

4.0 ≤ VOUT ≤ 5.5

I^OUT=150mA

The values in

are applicable under the condition of −40°C ≤ Topt ≤ 85°C.

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.

RP173x

TYPICAL APPLICATIONS

VOUT

VDD

VOUT

RP173x

Series

GND

External Parts Example:

C2: Ceramic Capacitor 0.1µF, Murata,GRM155B31C104KA87D

TECHNICAL NOTES

When using the ICs, please note the following points.

Phase Compensation

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For

this purpose, use a 0.1μF or more capacitor C2.

In case of using a tantalum capacitor, the output may be unstable due to inappropriate ESR. Therefore, the full

range of operating conditions for the capacitor in the application should be considered.

PCB Layout

Make V^DDand GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.

Connect a capacitor C1 with a capacitance value as much as 0.1μF or more between V^DDand GND pin, and as

close as possible to the pins.

Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring

as short as possible.

POWER ACTIVATION

If the ICs are started up with VIN and VCE under the no-load condition, the both pin voltages have to be started

up with faster than 2.0V/s. If the IC is started up with slower than 2.0V/s under the no-load condition, start up the

IC only with V^CE.

RP173x

REVERSE CURRENT PROTECTION CIRCUIT

The RP173 Series include a Reverse Current Protection Circuit, which stops the reverse current from VOUT pin

to V^DDpin or to GND pin when VOUT becomes higher than VIN.

Usually, the LDO using Pch output transistor contains a parasitic diode between V^DDpin and VOUT pin.

Therefore, if V^OUTis higher than VIN, the parasitic diode becomes forward direction. As a result, the current flows

from V^OUTpin to VDD pin.

The ICs of this series switches the mode to the reverse current protection mode before V^INbecomes lower

than V^OUTby connecting the parasitic diode of Pch output transistor to the backward direction, and connecting

the gate to V^OUTpin. As a result, the Pch output transistor is turned off and the all the current pathways from VOUT

pin to GND pin are shut down to maintain the reverse current lower than [I^REV] of the Electrical Characteristics.

Switching to either the normal mode or to the reverse current protection mode is determined by the magnitude

of V^INvoltage and VOUT voltage. For the stable operation, offset and hysteresis are set as the threshold. The

detection/ release thresholds of both normal and reverse current protection modes are specified by [V^REV_DET]

and [V^REV_REL] of the Electrical Characteristics. Therefore, the minimum dropout voltage under the small load

current condition is restricted by the value of [V^REV_REL].

Fig.1 and Fig.2 show the diagrams of each mode, and Fig.3 shows the load characteristics of each mode.

When giving the V^OUTpin a constant-voltage and decreasing the VIN voltage, the dropout voltage will become

lower than the [V^REV_DET]. As a result, the reverse current protection starts to function to stop the load current. By

increasing the dropout voltage higher than the [V^REV_REL], the protection mode will be released to let the load

current to flow. If the dropout voltage to be used is lower than [V^REV_REL], the detection and the release may be

repeated.

The operation coverage of the Reverse Current Protection Circuit is V^OUT≥ 1.5V. However, under the condition

of V^IN=0V, always the reverse current protection mode is operating.

Fig. 1 Normal Mode

Fig. 2 Reverse Current Protection Mode

V_IN

V_{REV_REL}

V_{REV_DET}

V_OUT

I_OUT

Normal Mode

Reverse Current Protection Mode

Normal Mode

I_REV

Fig. 3 Reverse Current Protection Mode Detection/ Release &

Reverse Current/ Output Current Characteristics

RP173x

TEST CIRCUITS

VDD

VOUT

RP173x

Series

OUT

VOUT

GND

C1=Ceramic 0.1μF

C2=Ceramic 0.1μF

Basic Test Circuit

VOUT

OUT

RP173x

Series

ISS

CE GND

C1=Ceramic 0.1μF

C2=Ceramic 0.1μF

Supply Current Test Circuit

Pulse

Generator

VDD

OUT

RP173x

Series

IOUT

P.G.

CE GND

C2=Ceramic 0.1μF

Ripple Rejection Test Circuit

OUT

VDD

OUT

RP173x

Series

GND

IOUTa

OUTb

C1=Ceramic 0.1μF

C2=Ceramic 0.1μF

Load Transient Response Test Circuit

RP173x

TYPICAL CHARACTERISTICS

1) Output Voltage vs. Output Current （C =Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x12xx

RP173x18xx

1.4

1.2

1.0

0.8

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

Vdd=2.8V

Vdd=3.8V

Vdd=5.5V

Vdd=8.3V

0.6

Vdd=2.5V

Vdd=3.2V

Vdd=4.2V

Vdd=5.5V

Vdd=7.7V

0.4

0.2

0.0

100

200

300

400

100

200

300

400

Output Current I_OUT(mA)

RP173x30xx

RP173x55xx

3.5

3.0

2.5

2.0

1.5

1.0

0.5

Vdd=6.5V

Vdd=11V

Vdd=4V

Vdd=5.5V

Vdd=9.5V

0.0

100

200

300

400

100

200

300

400

Output Current I_OUT(mA)

2） Output Voltage vs. Input Voltage (C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x12xx RP173x18xx

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

1.4

1.2

1.0

0.8

0.6

0.4

0.2

IOUT=1mA

IOUT=30mA

IOUT=50mA

IOUT=1mA

IOUT=30mA

IOUT=50mA

0.0

Input Voltage V_IN(V)

RP173x

RP173x30xx

RP173x55xx

3.5

3.0

2.5

2.0

1.5

1.0

0.5

IOUT=1mA

IOUT=30mA

IOUT=50mA

IOUT=1mA

IOUT=30mA

IOUT=50mA

0.0

Input Voltage V_IN(V)

3） Supply Current vs. Input Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x12xx

RP173x18xx

2.5

2.0

1.5

1.0

0.5

2.5

2.0

1.5

1.0

0.5

0.0

Input Voltage V_OUT(V)

RP173x30xx

RP173x55xx

2.5

2.0

1.5

1.0

0.5

2.5

2.0

1.5

1.0

0.5

0.0

Input Voltage V_OUT(V)

RP173x

4） Output Voltage vs. Temperature (C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, IOUT=1mA）

RP173x12xx RP173x18xx

1.24

1.23

1.22

1.21

1.20

1.19

1.18

1.17

1.84

1.83

1.82

1.81

1.80

1.79

1.78

1.77

-50

-25

100

-50

-25

100

Temperature Topt (°C)

RP173x30xx

RP173x55xx

3.03

3.02

3.01

3.00

2.99

2.98

2.97

2.96

5.56

5.54

5.52

5.50

5.48

5.46

5.44

5.42

-50

-25

100

-50

-25

100

Temperature Topt (°C)

5） Dropout Voltage vs. Output Current （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF）

RP173x12xx RP173x30xx

2000

1800

1600

1400

1200

1000

800

700

600

500

400

300

200

100

℃

-40

℃

600

℃

400

-40

℃

200

100 125 150

100

125

150

Output Current I_OUT(mA)

RP173x

RP173x55xx

500

450

400

350

300

250

200

150

100

℃

-40

℃

100 125 150

Output Current I_OUT(mA)

6） Dropout Voltage vs. Set Output Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x

1800

1600

1400

1200

Iout=150mA

1000

Iout=50mA

800

600

400

200

Iout=30mA

Set Output Voltage V_REG(V)

7） Minimum Operating Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=−40～85°C）

4.0

3.5

3.0

2.5

2.0

100

125

150

Output Current I_OUT(mA)

RP173x

8） Ripple Rejection vs. Input Vias Voltage

（

none, C2

Ceramic 0.1

F, Ripple=0.2Vp-p, Topt=25°C）

RP173x28xx

I_OUT=1mA

I_OUT=30mA

100Hz

1kHz

10kHz

100kHz

100Hz

1kHz

10kHz

100kHz

Input Bias Voltage V_IN(V)

RP173x28xx

I_OUT=50mA

100Hz

1kHz

10kHz

100kHz

Input Bias Voltage V_IN(V)

9） Ripple Rejection vs.Temperature （C1=none, C2=Ceramic 0.1μF, Ripple=0.2Vp-p, Topt=25°C）

RP173x12xx RP173x18xx

V_IN=2.5V

V_IN=2.8V

Iout=1mA

Iout=30mA

Iout=50mA

Iout=30mA

Iout=50mA

0.1

100

1000

0.1

100

1000

Frequency f (kHz)

RP173x

RP173x30xx

RP173x55xx

V_IN=4.0V

V_IN=6.5V

Iout=1mA

Iout=30mA

Iout=50mA

Iout=30mA

Iout=50mA

0.1

100

1000

0.1

100

1000

Frequency f (kHz)

10） Input Transient Response （C1=none, C2=Ceramic 0.1μF, tr=tf=5.0μs, Topt=25°C）

RP173x12xx

RP173x18xx

I_OUT=1mA

4.0

3.5

3.0

2.5

4.0

3.5

3.0

2.5

Input Voltage

2.2

2.0

1.8

1.6

1.4

1.2

1.6

1.4

1.2

1.0

0.8

0.6

Output Voltage

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x30xx

RP173x55xx

I_OUT=1mA

5.5

5.0

4.5

4.0

8.0

7.5

7.0

6.5

Input Voltage

3.4

3.2

3.0

2.8

2.6

2.4

5.9

5.7

5.5

5.3

5.1

4.9

Output Voltage

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x

RP173x12xx

RP173x18xx

I_OUT=30mA

4.0

3.5

3.0

2.5

4.0

3.5

3.0

2.5

Input Voltage

2.2

2.0

1.8

1.6

1.4

1.2

1.6

1.4

1.2

1.0

0.8

0.6

Output Voltage

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x30xx

RP173x55xx

I_OUT=30mA

8.0

7.5

7.0

6.5

5.5

5.0

4.5

4.0

Input Voltage

5.9

5.7

5.5

5.3

5.1

4.9

3.4

3.2

3.0

2.8

2.6

2.4

Output Voltage

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

11） Load Transient Response （C1=Ceramic 0.1μF,C2=Ceramic 0.1μF, tr=tf=0.5μs,Topt=25°C）

RP173x12xx

RP173x18xx

V_IN=2.5V

V_IN=2.8V

Output Current

1mA 10mA

⇔

1.6

1.4

1.2

1.0

0.8

0.6

2.2

2.0

1.8

1.6

1.4

1.2

Output Voltage

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x

RP173x30xx

RP173x55xx

V_IN=4.0V

V_IN=6.5V

Output Current

1mA 10mA

⇔

1mA 10mA

⇔

3.4

3.2

3.0

2.8

2.6

5.9

5.7

5.5

5.3

5.1

4.9

Output Voltage

2.4

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x12xx

RP173x18xx

V_IN=4.0V

150

100

150

100

Output Current

50mA 100mA

Output Current

50mA 100mA

⇔

1.8

1.5

1.2

0.9

0.6

2.4

2.1

1.8

1.5

1.2

0.9

Output Voltage

0.3

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x30xx

RP173x55xx

V_IN=6.5V

V_IN=4.0V

150

100

150

100

Output Current

50mA 100mA

⇔

3.6

3.3

3.0

2.7

2.4

5.8

5.5

5.2

4.9

4.6

Output Voltage

2.1

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

-0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Time t (ms)

RP173x

12） Turn on Speed （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x12xx

RP173x18xx

V_IN=2.8V (I_OUT=0,1,30mA)

V_IN=4.0V (I_OUT=100mA)

V_IN=2.5V (I_OUT=0,1,30mA)

V_IN=4.0V (I_OUT=100mA)

CE Input Voltage 0V 4.0V

⇒

CE Input Voltage

0V 2.8V

⇒

0V 2.5V

⇒

Iout=0mA

1.5

1.0

0.5

Iout=0mA

Iout=1mA

2.0

1.0

Iout=30mA

Iout=100mA

Iout=30mA

Iout=100mA

Output Voltage

0.0

-100 -50

50 100 150 200 250 300 350 400

Time t (µs)

-100 -50

50 100 150 200 250 300 350 400

Time t (µs)

RP173x30xx

RP173x55xx

V_IN=6.5V

V_IN=4.0V

CE Input Voltage

0V 6.5V

⇒

CE Input Voltage

4.0V

⇒

Iout=0mA

3.0

2.0

1.0

6.0

4.0

2.0

Iout=1mA

Iout=30mA

Iout=100mA

Iout=30mA

Iout=100mA

Output Voltage

0.0

-100 -50

50 100 150 200 250 300 350 400

Time t (µs)

-100 -50

50 100 150 200 250 300 350 400

Time t (µs)

13） Turn off Speed with CE pin （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）

RP173x12xx RP173x18xx

V_IN=2.5V(I_OUT=0,1,30mA)

V_IN=4.0V(I_OUT=100mA)

V_IN=2.8V(I_OUT=0,1,30mA)

V_IN=4.0V(I_OUT=100mA)

CE Input Voltage

4.0V 0V

⇒

CE Input Voltage

2.5V 0V

Iout=0mA

Iout=1mA

Iout=30mA

Iout=100mA

Iout=0mA

Iout=1mA

Iout=30mA

Iout=100mA

CE Input Voltage

2.8V 0V

⇒

1.5

1.0

0.5

⇒

Output Voltage

2.0

1.0

Output Voltage

0.0

-100 -50

50 100 150 200 250 300 350 400

Times t (µs)

-100 -50

50 100 150 200 250 300 350 400

Times t (µs)

RP173x

RP173x30xx

RP173x55xx

V_IN=6.5V

V_IN=4.0V

7.5

5.0

2.5

0.0

CE Input Voltage

6.5V 0V

⇒

4.0V 0V

⇒

Iout=0mA

Iout=1mA

Iout=30mA

Iout=100mA

4.5

3.0

1.5

Iout=0mA

Iout=1mA

Iout=30mA

Iout=100mA

6.0

4.0

2.0

Output Voltage

0.0

-100 -50

50 100 150 200 250 300 350 400

Times t (µs)

-100 -50

50 100 150 200 250 300 350 400

Times t (µs)

ESR vs.Output Current

When using these ICs, consider the following points:The relations between IOUT (Output Current) and ESR of

an output capacitor are shown below.The conditions when the white noise level is under 40μV (Avg.) are marked

as the hatched area in the graph.

Measurement Conditions

Frequency Band : 10Hz to 2MHz

Temperature

C1,C2

: −40ﾟC to 85ﾟC

:0.1μF

RP173x0121x

RP173x301x

V_IN=3.0V 9.5V

V_IN=2.5V 7.7V

～

100

0.1

0.01

0.1

0.01

100

125

150

100

125

150

Output Current (mA)

RP173x

RP173x551x

V_IN=5.5V 11V

～

100

0.1

0.01

100

125

150

Output Current (mA)

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

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, ﬁre containment 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.

Ricoh is committed to reducing the environmental loading materials in electrical devices

with a view to contributing to the protection of human health and the environment.

Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since

Halogen Free

April 1, 2012.

http://www.e-devices.ricoh.co.jp/en/

Sales & Support Oﬃces

RICOH ELECTRONIC DEVICES CO., LTD.

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

Prof. W.H. Keesomlaan 1, 1183 DJ Amstelveen, The Netherlands

Phone: +31-20-5474-309

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Phone: +82-2-2135-5700 Fax: +82-2-2051-5713

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Room 403, No.2 Building, No.690 Bibo Road, Pu Dong New District, Shanghai 201203,

People's Republic of China

Phone: +86-21-5027-3200 Fax: +86-21-5027-3299

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Taipei oﬃce

Room 109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)

Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623

RP173K251B-TR [RICOH]

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RP173K401A-TR

RP173K401B-TR

RP173K401D-TR

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