R5524x Series

R5524x Series
USB HIGH-SIDE POWER SWITCH
NO.EA-188-150402
OUTLINE
The R5524x is a CMOS-based high-side MOSFET switch IC which conforms to the universal serial bus (USB)
standard. The device is suitable for protecting a USB power source.
By using an Nch MOSFET with low On-resistance (Typ. 100 mΩ) as a switching transistor, the device can
provide low dropout voltage.
Internally, the device consists of an overcurrent limiting circuit, a thermal shutdown circuit, an undervoltage
lockout (UVLO) circuit and a reverse current protection circuit. The device also consists of an internal delay
circuit to prevent the output of false flag signals caused by inrush current.
To achieve simplification of layout design, the overcurrent detection accuracy has been improved.
The R5524x is offered in a 5-pin SOT-23-5 package and a 6-pin DFN(PLP)1820-6 package which achieve the
smallest possible footprint solution on boards where area is limited.
FEATURES

N-channel MOS High-Side Switch IC

Switch ON Resistance ······································· Typ. 100 mΩ at 5 V Input

Current Limit Threshold ····································· Min. 650 mA*1, Min. 1.25 A*2

Overcurrent Limit·············································· Min. 550 mA

Flag Delay Time ··············································· Typ. 20 ms

Under-voltage Lockout (UVLO) Circuit

Thermal Shutdown Circuit

Reverse Current Protection Circuit

Package ························································· SOT-23-5, DFN(PLP)1820-6*3
APPLICATIONS

PCs and PC Peripherals

Digital Televisions (DTV)

Set Top Boxes (STB)

Printers

PDA

Game Consoles
*1
only for R5524x001A/B, R5524x002A/B
only for R5524N004A
*3 only for R5524K001x, R5524K002x
*2
1
R5524x
NO.EA-188-150402
BLOCK DIAGRAMS
R5524xxxxA Block Diagram
VI N
V OUT
GATE
CONTROL
EN
UVLO
CURRENT
LIMIT
FLG DELAY
FLG
THERMAL
SHUTDOWN
GND
R5524xxxxB Block Diagram
VI N
V OU T
GATE
CONTROL
EN
UVLO
CURRENT
LIMIT
FLG DELAY
FLG
THERMAL
SHUTDOWN
GND
2
R5524x
NO.EA-188-150402
SELECTION GUIDE
The overcurrent limit protection type, the current limit threshold and the auto discharge options*1 for the ICs are
user-selectable options.
Selection Guide
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R5524N00x-TR-FE
SOT-23-5
3,000 pcs
Yes
Yes
DFN(PLP)1820-6
5,000 pcs
Yes
Yes
R5524K00x-TR
x: Specify the combination of Overcurrent Limit Protection type and Current Limit Threshold.
1: Latch-off Type, Current Limit Threshold: Min. 650 mA
2: Constant Current Type, Current Limit Threshold: Min. 650 mA
4: Cosntant Current Type, Current Limit Threshold: Min. 1.25 A*2
: Specify auto-discharge options.
A: Auto-discharge included
B: Auto-discharge not included
*1
Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the
active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.
*2
only for R5524N004A
PIN DESCRIPTIONS
5
1
4
2
3
SOT-23-5 Pin Configuration
SOT23-5 Pin Description
Pin No.
Symbol
Description
1
VIN
2
GND
3
EN
Chip Enable Pin, Active-high
4
FLG
Flag Pin, Open Drain Output
5
VOUT
Output Pin
Input Pin
Ground Pin
3
R5524x
NO.EA-188-150402
Top View
6
5
Bottom View
4
4
5
6
*1
1
2
3
3
2
DFN(PLP)1820-6 Pin Configuration
DFN(PLP)1820-6 Pin Description
*1
Pin No.
Symbol
Description
1
VOUT
Output Pin
2
NC
No Connection
3
FLG
Flag Pin, Open Drain Output
4
EN
Enable Pin, Active-high
5
GND
6
VIN
Ground Pin
Input Pin
The tab on the bottom of the package enhances thermal performance and is electrically connected to GND
(substrate level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left
floating.
4
R5524x
NO.EA-188-150402
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings
Symbol
Rating
Unit
6.0
V
VIN
Input Voltage
VEN
Enable Pin Input Voltage
−0.3 to 6.0
V
VFLG
Flag Pin Voltage
−0.3 to 6.0
V
IFLG
Flag Pin Current
14
mA
VOUT
Output Pin Voltage
−0.3 to 6.0
V
IOUT
Output Current
PD
Power Dissipation
(Standard Land Pattern)*1
Ta
Tstg
*1
Item
Internally Controlled
SOT-23-5
420
mW
DFN(PLP)1820-6
880
mW
Operating Temperature Range
−40 to 85
°C
Storage Temperature Range
−55 to 125
°C
Refer to PACKAGE INFORMATION for detailed 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.
5
R5524x
NO.EA-188-150402
ELECTRICAL CHARACTERISTICS
The specifications surrounded by
are guaranteed by design engineering at −40°C ≤ Ta ≤ 85°C.
Electrical Characteristics
Symbol
Item
VIN
IDD1
IDD2
RON
ton
toff
VUVLO
VHYS
ITH
Input Voltage
Supply Current (Active Mode)
Supply Current (Standby Mode)
Switch On Resistance
Output Turn-on Delay
Output Turn-off Delay
UVLO Release Voltage
UVLO Hysteresis Range
Current Limit Threshold
ILIM
Overcurrent Limit
tFD
Flag Delay Time*1
TTSD
TTSR
IEN
VEN1
VEN2
ILO
VLF
IFOF
IREV
RLOW
(Ta = 25°C)
Conditions
Thermal Shutdown
Temperature
Thermal Shutdown
Released Temperature
Enable Pin Input Current
Enable Pin Input Voltage 1
Enable Pin Input Voltage 2
Output Leakage Current
Flag "L" Output Voltage
Flag Off Current
Reverse Leakage Current
Nch. On-resistance for
Auto Discharge (R5524x00xA)
Min.
Typ.
Max.
Unit
5.5
V
110
0.1
100
400
50
2.5
0.1
180
1.0
150
µA
µA
mΩ
µs
µs
V
V
650
800
980
1.25
1.55
1.85
1.2
1.55
1.9
550
650
800
mA
7
20
30
ms
2.7
VOUT = OPEN, EN = ”H”, VIN = 5 V
VOUT = OPEN, EN = ”L”, VIN = 5 V
VIN = 5 V, IOUT = 500 mA
VIN = 5 V, RL = 60 Ω
VIN = 5V, RL = 60 Ω
VIN Rising
VIN Falling
R5524x001A/ 001B
VIN = 5 V
R5524x002A/ 002B
VIN = 5 V
R5524N004A
VIN = 5 V,
Ta = 0 to 70C
VIN = 5 V, VOUT = 0 V, after 5 ms
VIN = 5 V,
starts when overcurrent is detected
and ends when FLG = “L”
2.3
2.7
mA
A
Junction Temperature
135
C
Junction Temperature
120
C
0.01
VEN Rising
VEN Falling
2.0
−0.3
0.1
ISINK = 1 mA
VFLG = 5.5 V
VIN = 0 V, VOUT = 5.5 V
0.01
450
1.0
6.0
0.8
1.0
0.4
1.0
50
µA
V
V
µA
V
µA
µA
Ω
All test items listed under Electrical Characteristics are done under the pulse load condition (Tj ≈ Ta = 25°C) except Thermal
Shutdown Temperature and Thermal Shutdown Released Temperature.
*1
Flag Delay Time is dependent on Input Voltage.
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.
6
R5524x
NO.EA-188-150402
TYPICAL APPLICATION
VIN
10 k~ 100 k
VIN
Over Current
4 FLG
VIN
*1
1
R5524x
USB Host Controller
3
ON/OFF
EN
GND
2
VOUT
VOUT
5
USB Client
VBUS
Device
1 F
47 F
*2
R5524x Typical Application
*1
FLG pin is Nch. Open Drain Output.
*2
A 47 µF or more output capacitor is recommended. According to a USB standard, a 120 µF or more output capacitor
is required.
TECHNICAL NOTES
Bypass Capacitor
A 0.1µF to 1 µF bypass capacitor between the VIN pin and the GND pin, close to the device, is recommended.
This precaution reduces power supply transients that may cause ringing on the input.
Pull-up Resistor of FLG Pin
A 10 kΩ to 100 kΩ pull-up resistor is recommended for the FLG pin.
R5524x001A/001B
The R5524x001A/001B is equipped with a latch-off function which requires initialization before start-up.
Case 1: Start-up by EN Pin Control
EN pin must be enabled with the delay of 10 µs or more against 90% of VIN voltage rising edge.
Case 2: Start-up by EN Pin Tied to VIN Pin
Slew rate of VIN must be 40 µs/V or slower.
7
R5524x
NO.EA-188-150402
TIMING CHART
Output On-time and Output Off-time
tON
tOFF
50%
VEN
50%
10%
90%
VOUT
R5524x Timing Chart
Flag Delay Time
tFD
ITH
IOUT
VFLG
10%
R5524x001A/001B Timing Chart (Latch-off Type)
ITH
tFD
ILIM
IOUT
VFLG
10%
R5524x002A/002B and R5524N004A Timing Chart (Constant Current Type)
8
R5524x
NO.EA-188-150402
Overcurrent Limiting Function
The R5524x001A/001B has the built-in latch-off type over-current limit circuit. When the over-current is
detected, the protection circuit becomes active and the switch-transistor is turned OFF. The latch function is
released if the input voltage value is exceeded in the release threshold of the UVLO circuit value after when it
became lower than the detection threshold of the UVLO circuit value; or the EN pin set to the enabling condition
again after set to the disabling condition.
If the over current condition occurred when the input voltage value was close to the minimum operating input
voltage value. Under this condition, the voltage descends by the parasitic impedance on the power supply side,
and it might fall below the detection threshold of the UVLO circuit. In this case, the switch-transistor is turned OFF
and because of that the voltage drop of power line’s parasitic impedance stops; the latch function is released with
the UVLO and it becomes the over current condition again. The switch transistor keeps continual ON and OFF
until one of the following is done; increasing the input voltage value; the setting of EN pin is disabling; or reducing
the value of load current.
Moreover, the supply-voltage changed by the load-current dramatically changed depends upon the parasitic
impedance of the wiring on the load side or the power supply side. Due to this, decreasing the parasitic
impedance by the wiring on board is recommended.
The switch transistor of the R5524x001A/001B is turned OFF when the latch-off-function operates under the
condition of the load of the constant current as the load device, such as the electronic load and so on, connecting
with the VOUT pin of the R5524x001A/001B. Because the load device keeps the constant current, the VOUT pin
voltage may become negative potential. If the VOUT pin is exceed the absolute maximum rating may cause the
permanent damages to the device, please avoid using in this situation.
The R5524x002A/002B and R5524N004A have the built-in over current protection circuit as the constant
current type. It detects as the over-current condition, if the current flows as the ITH defined. Then operating the
switch transistor to limit the output current to be the constant current defined by the ILIM.
If the condition of the over-current limit caused by the VOUT pin clamped to the GND were continued the
temperature of the ICs would increase drastically. The switch-transistor is turned OFF if the temperature of the
ICs becomes over 135°C (Typ.). And after this, the switch-transistor is turned ON again when the temperature of
ICs decreased approximately 15°C. The switch-transistor keeps continual ON and OFF until either the switch is
turned OFF or the VOUT pin is removed from GND.
9
R5524x
NO.EA-188-150402
PACKAGE INFORMATION
Power Dissipation (SOT-23-5)
Power Dissipation (PD) of the package is dependent on PCB material, layout, and environmental conditions. The
following conditions are used in this measurement. This data is taken from a SOT-23-6 package data.
Measurement Conditions
Standard Land Pattern
Environment
Mounting on Board (Wind Velocity = m/s)
Board Material
Glass Cloth Epoxy Plastic (Double-sided)
40 mm × 40 mm × 1.6 mm
Board Dimensions
Copper Ratio
Top-side: Approx. 50%, Back-side: Approx. 50%
Through-holes
 0.5 mm × 44 pcs
Measurement Result
(Ta = 25°C, Tjmax = 125°C)
Standard Land Pattern
Free Air
Power Dissipation
420 mW
250 mW
Thermal Resistance
Θja = (125 − 25°C) / 0.42 W = 238°C/W
400°C/W
600
500
Standard Land Pattern
420
400
300
Free Air
250
40
Power Dissipation P D (mW)
40
200
100
0
0
25
50
75 85 100
125
150
Ambient Temperature (°C)
Power Dissipation vs. Ambient Temperature
10
IC Mount Area (Unit: mm)
Measurement Board Pattern
R5524x
NO.EA-188-150402
PACKAGE DIMENSIONS (SOT-23-5)
2.9±0.2
1.1±0.1
1.9±0.2
0.8±0.1
(0.95)
4
1
2
0～0.1
0.2mi n.
+0.2
1.6-0.1
5
2.8±0.3
(0.95)
3
+0.1
0.15-0.05
0.4±0.1
(Unit: mm)
SOT-23-5 Package Dimensions
MARK SPECIFICATION (SOT-23-5)
: Product Code … Refer to MARK SPECIFICATION TABLE (SOT-23-5)
: Lot Number … Alphanumeric Serial Number
5
4

1
2
3
SOT-23-5 Mark Specification
11
R5524x
NO.EA-188-150402
MARK SPECIFICATION TABLE (SOT-23-5)
Mark Specification Table
Product Name

12
R5524N001A
M AA
R5524N001B
MAB
R5524N002A
MAC
R5524N002B
MAD
R5524N004A
MAF
R5524x
NO.EA-188-150402
POWER DISSIPATION (DFN(PLP)1820-6)
Power Dissipation (PD) of the package is dependent on PCB material, layout, and environmental conditions.
The following conditions are used in this measurement.
Measurement Conditions
Standard Land Pattern
Environment
Mounting on Board (Wind Velocity = 0 m/s)
Board Material
Glass Cloth Epoxy Plastic (Double-sided)
Board Dimensions
40 mm × 40 mm × 1.6 mm
Copper Ratio
Top-side: Approx. 50%, Back-side: Approx. 50%
Through-hole
 0.54 mm × 30 pcs
Measurement Result
(Ta = 25°C, Tjmax = 125°C)
Standard Land Pattern
Power Dissipation
880 mW
Thermal Resistance
Θja = (125 − 25°C) / 0.88 W = 114°C/W
40
1000
880
800
Standard Land Pattern
600
40
Power Dissipation P D (mW)
1200
400
200
0
0
25
50
75 85 100
125
150
Ambient Temperature (°C)
Power Dissipation vs. Ambient Temperature
IC Mount Area (Unit: mm)
Measurement Board Pattern
13
R5524x
NO.EA-188-150402
PACKAGE DIMENSIONS (DFN(PLP)1820-6)
1.60.1
A
1.80
0.200.1
B
5
4
0.250.1 0.250.1
X4
0.05
2.00
1.00.1
*1
INDEX
3
0.6MAX.
0.5
0.05 S
2
1
0.1NOM.
0.30.1
0.05min
S
0.05 M AB
6
Bottom View
*1
(Unit: mm)
The tab on the bottom of the package enhances
thermal performance and is electrically connected
to GND (substrate level). It is recommended that
the tab be connected to the ground plane on the
board, or otherwise be left floating.
DFN(PLP)1820-6 Package Dimensions
MARK SPECIFICATION (DFN(PLP)1820-6)
: Product Code …Refer to MARK SPECIFICATION TABLE (DFN(PLP)1820-6
: Lot Number …Alphanumeric Serial Number
6
5
4


1
2
3
DFN(PLP)1820-6 Mark Specification
14
R5524x
NO.EA-188-150402
MARK SPECIFICATION TABLE (DFN(PLP)1820-6)
Mark Specification Table
Product Name

R5524K001A
EJ00
R5524K001B
EJ01
R5524K002A
EJ02
R5524K002B
EJ03
15
R5524x
NO.EA-188-150402
TEST CIRCUITS
V
IOUT
1 VIN
VOUT 5
R5524x
0.1F
2
GND
A
VIN
VEN
3 EN
1 VIN
VOUT 5
R5524x
0.1F
2
GND
VIN
FLG 4
VEN
Supply Current Test Circuit
0.1F
VIN
VEN
1 VIN
VOUT 5
R5524x
56
2
GND
3 EN
V
3 EN
3 EN
1 VIN
VOUT 5
R5524x
0.1F
2
GND
VIN
FLG 4
3 EN
FLG 4
Enable Input Voltage Test Circuit
16
FLG 4
UVLO Released Voltage Test Circuit
A
1 VIN
VOUT 5
R5524x
0.1F
2
100k
GND
VEN
V
VIN
VEN
Over current Limit Test Circuit
VIN
1 VIN
VOUT 5
R5524x
0.1F
2
100k
GND
FLG 4
1 VIN
VOUT 5
R5524x
0.1F
2
GND
VEN
FLG 4
Switch ON Resistance Test Circuit
Output ON Time/Output OFF Time Test Circuit
VIN
3 EN
3 EN
A
FLG 4
Current Limit Threshold Test Circuit
0.1F
V
VIN
VEN
1 VIN
VOUT 5
R5524x
2
GND
3 EN
FLG 4
10k
Flag Output Delay Time Test Circuit
V
R5524x
NO.EA-188-150402
TYPICAL CHARACTERISTICS
Note: Typical Characteristics are intended to be used as reference data; they are not guaranteed.
2) Supply Current vs. Input Voltage
120
120
4.5V
5.0V
5.5V
110
100
Supply Current IDD1 (μA)
Supply Current IDD1 (μA)
1) Supply Current vs. Temperature
90
80
70
60
-50
-25
0
25
50
75
-40°C
25°C
85°C
110
100
90
80
70
60
100
2.5
3.0
3.5
Temperature Topt (°C)
3) Switch ON Resistance vs. Temperature
140
120
Switch ON Resistance
RON (mΩ)
Switch ON Resistance
RON (mΩ)
IOUT=300mA
4.5V
5.0V
5.5V
100
80
60
40
-50
4.5
5.0
5.5
6.0
4) Switch ON Resistance vs. Input Voltage
160
160
4.0
Input Voltage VIN (V)
-40°C
25°C
85°C
140
IOUT=300mA
120
100
80
60
40
-25
0
25
50
75
2.5
100
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage VIN (V)
Temperature Topt (°C)
5) Output ON Time vs. Temperature (RL = 56 Ω) 6) Output ON Time vs. Input Voltage (RL = 56 Ω)
900
Output ON Time t ON (μs)
Output ON Time t ON (μs)
900
800
700
600
500
400
4.5V
5.0V
5.5V
300
200
100
0
-50
-25
0
25
50
75
Temperature Topt (°C)
100
800
-40°C
25°C
85°C
700
600
500
400
300
200
100
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage VIN (V)
17
R5524x
NO.EA-188-150402
7) UVLO Voltage vs. Temperature
8) Output Voltage vs. Input Voltage
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.55
Output Voltage VOUT (V)
UVLO Voltage V UVLO (V)
2.60
2.50
2.45
2.40
2.35
2.30
UVLO Threshold Voltage
UVLO Released Voltage
2.25
2.20
-50
-25
0
25
50
75
100
0
Temperature Topt (°C)
4
1.52
4.5V
5.0V
5.5V
860
850
Current Limit Treshold
Ith (A)
Current Limit Threshold
ITH (mA)
3
840
830
820
810
800
-50
-25
0
25
50
75
5
10) Current Limit Threshold vs. Temperature
(004A)
870
100
Temperature Topt (°C)
11) Current Limit Threshold vs. Input Voltage
(001x/ 002x)
4.5V
5.0V
5.5V
1.5
1.48
1.46
1.44
1.42
1.4
1.38
1.36
-50
-25
0
25
50
75
100
Temperature Topt (℃)
12) Current Limit Threshold vs. Input Voltage
(004A)
870
1.52
-40°C
25°C
85°C
860
850
Current Limit Threshold
Ith (A)
Current Limit Threshold
ITH (mA)
2
Input Voltage VIN (V)
9) Current Limit Threshold vs. Temperature
(001x/ 002x)
840
830
820
810
800
2.5
3.0
3.5
4.0
4.5
5.0
Input Voltage VIN (V)
18
1
5.5
6.0
-40℃
25℃
85℃
1.50
1.48
1.46
1.44
1.42
1.40
1.38
1.36
2.5
3
3.5
4
4.5
5
Input Voltage Vin (V)
5.5
6
R5524x
NO.EA-188-150402
14) Overcurrent Limit vs. Input Voltage
800
800
750
750
Over Current Limit
ILIM (mA)
Over Current Limit
ILIM (mA)
13) Overcurrent Limit vs. Temperature
700
650
600
4.5V
5.0V
5.5V
550
500
-50
0
25
50
75
650
600
550
2.5
100
Temperature Topt (°C)
3.0
4.0
4.5
5.0
5.5
6.0
16) Flag Delay Time vs. Input Voltage
Flag Delay Time tFD (ms)
35
25
20
15
4.5V
5.0V
5.5V
10
5
-25
0
25
50
75
30
25
20
15
10
-40°C
25°C
85°C
5
0
2.5
100
3.0
Temperature Topt (°C)
V IN=5V
1.35
1.30
1.25
1.20
1.15
1.10
VEN1
VEN2
1.05
1.00
-50
-25
0
25
50
4.0
4.5
5.0
5.5
6.0
75
Temperature Topt (°C)
100
18) Enable Input Voltage vs. Input Voltage
1.40
Enable Pin Input Voltage
VEN1 / VEN2 (V)
1.40
3.5
Input Voltage VIN (V)
17) Enable Input Voltage vs. Temperature
Enable Pin Input Voltage
VEN1 / VEN2 (V)
3.5
Input Voltage VIN (V)
30
Flag Delay Time tFD (ms)
700
500
-25
15) Flag Delay Time vs. Temperature
0
-50
-40°C
25°C
85°C
V opt=25°C
1.35
1.30
1.25
1.20
1.15
1.10
VEN1
1.05
VEN2
1.00
2.5
3.0
3.5
4.0
4.5
5.0
Input Voltage VIN (V)
5.5
6.0
19
R5524x
NO.EA-188-150402
19) Overcurrent Response with Ramped Load
(R5524x001x)
20) Overcurrent Response with Ramped Load
(R5524x002x)
V IN=5V
V IN=5V
EN=”L”
V FLG
(5V/div)
V FLG
(5V/div)
IOUT
(200mA/div)
IOUT
(200mA/div)
Time (5ms/div)
Time (5ms/div)
21) Overcurrent Response with Ramped Load (R5524x004A)
V IN=5.0V
V FLG
(5V/div)
EN="L"
IOUT
(200mA/div)
Time (5md/div)
22) Overcurrent Limit Transient Response
(Output short during enable "H")
(Enable "H" during Output Short)
V OUT
V EN
(5V/div)
(5V/div)
V IN=5V
V EN=H
IOUT
(200mA/div)
V IN=5V
V OUT=GND short
Time (10μs/div)
20
IOUT
(2A/div)
Time (10μs/div)
R5524x
NO.EA-188-150402
23) Thermal Shutdown Operation
24) Output Voltage vs. Output Current
5
V IN=5V
Output Voltage VOUT (V)
4.5
V EN
(5V/div)
V FLG
(5V/div)
IOUT
(500mA/div)
4
3.5
3
2.5
2
1.5
1
0.5
0
Time (50ms/div)
0
25) Output ON Time Response
0.2
0.4
0.6
0.8
Output Current IOUT (A)
1
26) Output OFF Time Response
V IN=5V
RL=56Ω
V EN
(5V/div)
V EN
(5V/div)
V OUT
V OUT
(2V/div)
(2V/div)
V IN=5V
RL=56Ω
IOUT
(50mA/div)
Time (100μs/div)
IOUT
(50mA/div)
Time (10μs/div)
27) Inrush current Characteristic
V EN
(5V/div)
IOUT
(200mA/div)
V IN=5V
RL=10Ω
EN
100μF
300μF
10μF
300μF
Time (1ms/div)
21
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, 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.
Halogen Free
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
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
RICOH ELECTRONIC DEVICES KOREA CO., LTD.
3F, Haesung Bldg, 504, Teheran-ro, Gangnam-gu, Seoul, 135-725, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2051-5713
RICOH ELECTRONIC DEVICES SHANGHAI CO., LTD.
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
RICOH ELECTRONIC DEVICES CO., LTD.
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