R5104V004B [RICOH]
Microprocessor power management with Watchdog Timer; 微处理器的电源管理与看门狗定时器
| 型号： | R5104V004B |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Microprocessor power management with Watchdog Timer |
| 文件： | 总20页 (文件大小：794K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R5104V SERIES
Microprocessor power management with Watchdog Timer
NO.EA-136-070201
OUTLINE
The R5104V Series are high voltage tolerance CMOS-based microprocessor power management ICs with
high accuracy output voltage and detector threshold and with ultra low supply current. Each of these ICs consists
of a voltage regulator, a voltage detector and a watchdog timer. Thus, the R5104V Series have the function of a
power management for microprocessor, a monitor of the voltage of a power source and a microprocessor
supervisor.
The built-in voltage regulator with an external driver transistor can supply Min.1A current to a system.
Therefore these ICs are very suitable for various power supply systems for microprocessors. The output voltage
is monitored by the voltage detector which is built-in these ICs.
The built-in voltage detector has an output delay function and the delay time can be set by an external
capacitor (CD).
The output voltage and the detector threshold voltage can be set individually for each IC by laser trimming.
Furthermore, when a microprocessor works incorrectly, the watchdog timer which checks over microprocessor
generates reset signals intermittently to prevent a whole system from being malfunction.
The timeout periods for watchdog and reset can also be set individually by an external capacitor (CTW).
There are two kinds of power down function: "A" version turns off the supervisor of clock input for the
watchdog timer, while the "B" version turns off all the circuits and realizes the standby mode.
FEATURES
• Low supply current......................................... Typ. 60µA (IOUT=0mA)
• Standby Current (B version)........................... Typ. 0.1µA
• Output Voltage ............................................... 3.3V to 5.0V
• Detector Threshold Voltage ........................... 2.8V to 4.0V
• Maximum Operating Input Voltage................. Max. 36V
• High Accuracy Output Voltage of Voltage Regulator and Detector Threshold ..... ±2.0%
• Built-in a watchdog timer
• Timeout period for watchdog and generating a reset signal can be set by an external capacitor
• Watchdog timer can be stopped individually by CE Pin
• Power-on Reset Delay Time can be set by an external capacitor
• Small Package............................................... SSOP-10
APPLICATION
• Power source for microprocessors
1
BLOCK DIAGRAMS
R5104VxxxA
CE
9
Level Shift
WDT
SCK
6
2
RESET 5
ISENSE
Current Limit
CTW
VDD
7
1
EXT
4
3
VOUT
Vref
－
＋
＋
＋
Vref
CD
8
9
GND
10
R5104VxxxB
CE
Level Shift
WDT
SCK
6
2
RESET 5
ISENSE
Current Limit
CTW
VDD
7
1
EXT
4
3
VOUT
Vref
－
＋
＋
＋
Vref
CD
8
GND
10
2
SELECTION GUIDE
The selection can be made with designating the part number as shown below:
R5104Vxxxx-xx-x←Part Number
↑ ↑
↑
↑ ↑
a b
c
d e
Code
Contents
Designation of Package Type;
a
b
V: SSOP-10 (3.1mm×6.4mm)
Serial Number for Voltage setting combination from 001
Alphabetical Code for Mask Versions (Power-down mode)
c
A: Watchdog timer off type
B: Standby mode type
d
e
Designation of Taping TypeE2 is described as standard.
Designation of composition of Pin Plating.
-F: Lead free Plating
PIN CONFIGURATION
SSOP-10
1
2
3
4
5
10
9
8
7
6
PIN DESCRIPTIONS
Pin No
Symbol
Pin Description
1
VDD
Power supply Pin Clock
Sense Pin for Current Limit of VR.
Monitoring the dropout voltage generated at an external resistor
between pin 1 and pin 2, if the dropout exceeds 0.3V (Typ.),
the current limit works.
2
ISENSE
3
4
VOUT
Output Pin for Voltage Regulator
External Transistor Drive Pin
EXT
Output Pin for Reset signal of Watchdog timer and Voltage Detector.
(Output Type is Nch Open Drain, Output “L” at detecting Detector
Threshold and Watchdog Timer Reset.)
5
RESET
6
7
SCK
CTW
CD
Clock Input Pin from Microprocessor
External Capacitor Pin for Setting Reset and Watchdog Timeout
Periods
8
External Capacitor Pin for Setting Delay Time of Voltage Detector
Control Switch Pin for halting Watchdog timer (A version),
9
CE
or Chip Enable Pin (B version)
10
GND
Ground Pin
3
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
-0.3~50
Unit
V
VDD
Supply Voltage
VPEAK
VCD
Peak Input Voltage (*Note 1)
60
V
Voltage of CD Pin
Voltage of CTW Pin
Voltage of VOUT Pin
V
VSS −0.3 to 7.5
VSS −0.3 to 7.5
VSS −0.3 to 7.5
VSS −0.3 to 7.5
VSS −0.3~VIN+0.3
VSS −0.3~VIN+0.3
VSS −0.3~VIN+0.3
10
VCTW
VOUT
VRESET
VCE
V
Output Voltage
V
V
RESET
Voltage of
Pin
Pin
Voltage of CE Pin
Voltage of ISENSE Pin
Voltage of SCK Pin
Current of EXT Pin
V
Input Voltage
VISENSE
VSCK
IEXT
V
V
mA
mA
Output Current
IRESET
PD
20
RESET
Current of
Power Dissipation
300
mW
°C
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
-40~+125
-55~+140
°C
*Note 1 duration time=200ms
Do not force any voltage more than supply voltage to CD, CTW, VOUT, and
RESET
pins.
Operational Ratings (Electrical Characteristics)
Application circuits of semiconductors should be designed with operating within the operational ratings of
the semiconductors. Even the noise or surge, if their level is beyond the operational ratings, normal
operation of the semiconductor may not be expected. If the application circuits make the semiconductor
operate beyond the condition of operational ratings, the quality assurance level of the semiconductor
cannot be maintained.
Absolute Maximum Ratings
Absolute maximum ratings are threshold limit values that must not be exceeded even for any moment
under any conditions. More over, such values for any two or more items of the ratings must not be reached
simultaneously. Operation above these absolute maximum ratings may cause degradation or fatal damage
to the device. These mean stress ratings and do not necessarily imply functional operation below these
limits.
4
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VIN=CE=VISENSE=12V, IOUT=100mA, CCTW=0.1µF, CD=0.01µF)
• R5104VxxxA(Overall)
Topt=25°C
Symbol
VIN
ISS
Ioff
VCEH
VCEL
VR part
Symbol
VOUT
IOUT
VDIF
∆VOUT/∆IOUT
∆VOUT/
∆VIN
Item
Operating Voltage
Supply Current
Supply Current (WDT inactive)
CE Input Voltage “H”
CE Input Voltage “L”
Conditions
IOUT=0mA
Min.
Typ.
Max.
36
100
90
VIN+0.3
0.25
Unit
V
µA
µA
V
V
60
50
VIN=12V, CE=0V
2.0
0.00
Item
Output Voltage
Output Current(*1)
Dropout Voltage(*1)
Load Regulation(*1)
Conditions
Min.
×0.98
1.0
Typ.
Max.
×1.02
Unit
V
A
mV
mV
VIN=12V
50
15
IOUT=300mA
60
VIN=12V,1mA
IOUT
1A
=
=
IOUT=100mA
Line Regulation(*1)
0.05
0.10
%/V
VOUT+1V
VIN
36V
=
=
∆VOUT/
∆Topt
ISINK1
Output Voltage Temperature
Coefficient (*1)
-40°C Topt 125°C
±50
14
ppm/°C
mA
=
=
EXT Output Sink Current Limit
VIN=12V, VOUT=VOUT-0.2V
VIN=12V, VOUT=0V
9
20
EXT Output Sink Current Limit
ISINK2
VISENSE
RR
0.20
0.50
0.85
mA
(Output short)
Current Limit Detector
Threshold
0.23
0.30
0.37
V
VIN=VOUT+1V,f=1kHz,
Ripple Rejection
55
dB
500mVp-p
*1) Depending on the capability of an external PNP transistor. Use an hFE with approximately 100 to 300. The output
current does not always mean continuous current because of the limit of power dissipation of PNP transistor.
VD part
Symbol
-VDET
Item
Conditions
Min.
×0.98
Typ.
Max.
×1.02
Unit
V
Detector Threshold
(-VDET) (-VDET) (-VDET)
VHYS
Hysteresis Range
V
×0.01 ×0.02 ×0.03
∆-VDET/
∆Topt
VTCD
Detector Threshold Temperature
Coefficient
-40°C Topt 125°C
ppm/°C
±50
=
=
CD pin detector threshold
2.35
0.12
2.50
0.30
2.65
0.47
2.0
V
µA
V
Internal Current value for
ICD
Delay Time Setting
VINL
WDT part
Symbol
tWD
Minimum Operating Voltage
VOUT pin voltage
Item
Conditions
CTW=0.1µF
CTW=0.1µF
Min.
200
35
Typ.
300
70
Max.
510
120
VDD+0.3
0.1
Unit
ms
ms
V
Watchdog Timeout period
Reset Hold Time of WDT
SCK Input Voltage “H”
SCK Input Voltage “L”
tWR
VIHSCK
VILSCK
0.8×VOUT
0.0
500
5000
V
>
-VDET 3.0V
=
TSCKW
SCK Input Pulse Width
ns
-VDET 2.9V
=
5
(Unless otherwise specified, VIN=CE=VISENSE =12V, IOUT=100mA, CCTW=0.1µF, CD=0.01µF)
• R5104VxxxB (Overall)
Topt=25°C
Symbol
VIN
ISS
Ioff
VCEH
VCEL
VR part
Symbol
VOUT
Item
Operating Voltage
Supply Current
Supply Current (Standby)
CE Input Voltage “H”
CE Input Voltage “L”
Conditions
IOUT=0mA
Min.
Typ.
Max.
36
100
0.5
VIN+0.3
0.25
Unit
V
µA
µA
V
V
60
0.1
VIN=12V, CE=0V
2.0
0.0
Item
Output Voltage
Output Current(*Note 1)
Dropout Voltage(*Note 1)
Load Regulation(*Note 1)
Conditions
Min.
×0.98
1.0
Typ.
Max.
×1.02
Unit
V
A
mV
mV
IOUT
VDIF
VIN=12V
IOUT=300mA
50
15
60
∆VOUT/∆IOUT
VIN=12V ,1mA
IOUT
1A
=
=
=
∆VOUT/
IOUT=100mA
Line Regulation(*Note 1)
0.05
0.10
%/V
VOUT+1V
VIN
36V
∆VIN
=
∆VOUT/
∆Topt
ISINK1
Output Voltage Temperature
Coefficient (*Note 1)
-40°C Topt 125°C
±50
14
ppm/°C
mA
mA
V
=
=
EXT Output Sink Current Limit
VIN=12V, VOUT=VOUT-0.2V
VIN=12V, VOUT=0V
9
20
EXT Output Sink Current Limit
ISINK2
VISENSE
RR
0.20
0.23
0.50
0.30
55
0.85
0.37
(Output short)
Current Limit Detector Threshold
Ripple Rejection
VIN=VOUT+1V,f=1kHz,
dB
500mVp-p
*1) Depending on the capability of an external PNP transistor. Use an hFE with approximately 100 to 300. The
output current does not always mean continuous current because of the limit of power dissipation of PNP
transistor.
VD part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
-VDET
Detector Threshold
V
×0.98
×1.02
(-VDET) (-VDET) (-VDET)
VHYS
Hysteresis Range
V
×0.01 ×0.02 ×0.03
∆-VDET/
∆Topt
VTCD
Detector Threshold Temperature
Coefficient
-40°C Topt 125°C
ppm/°C
±50
=
=
CD pin detector threshold
2.35
0.12
2.50
0.30
2.65
0.47
2.0
V
µA
V
Internal Current value for
ICD
Delay Time Setting
VINL
WDT part
Symbol
tWD
Minimum Operating Voltage
VOUT pin Voltage
Item
Conditions
CTW=0.1µF
CTW=0.1µF
Min.
200
35
0.8×VOUT
0.0
Typ.
300
70
Max.
510
130
VDD+0.3
0.1
Unit
ms
ms
V
Watchdog Timeout period
Reset Hold Time of WDT
SCK Input Voltage “H”
SCK Input Voltage “L”
tWR
VIHSCK
VILSCK
V
>
-VDET 3.0V
=
500
5000
TSCKW
SCK Input Pulse Width
ns
-VDET 2.9V
=
6
(Unless otherwise specified, VIN=CE=VISENSE =12V, IOUT=100mA, CCTW=0.1µF, CD=0.01µF)
• R5104V007A (Overall)
Topt=25°C
Symbol
VIN
ISS
Ioff
VCEH
VCEL
VR part
Symbol
VOUT
Item
Operating Voltage
Supply Current
Supply Current (WDT inactive)
CE Input Voltage “H”
CE Input Voltage “L”
Conditions
IOUT=0mA
Min.
Typ.
Max.
36
80
80
VIN+0.3
0.25
Unit
V
µA
µA
V
V
45
45
VIN=12V, CE=0V
2.0
0.00
Item
Output Voltage
Output Current(*1)
Dropout Voltage(*1)
Conditions
Min.
×0.98
1.0
Typ.
Max.
×1.02
Unit
V
A
IOUT
VDIF
VIN=12V
IOUT=300mA
50
15
mV
∆VOUT/∆IOU
Load Regulation(*1)
60
mV
VIN=12V ,1mA
IOUT
1A
=
=
=
T
∆VOUT/
∆VIN
∆VOUT/
∆Topt
ISINK1
IOUT=100mA
Line Regulation(*1)
0.05
0.10
%/V
VOUT+1V
VIN
36V
=
Output Voltage Temperature
Coefficient (*1)
-40°C Topt 125°C
±50
14
ppm/°C
mA
=
=
EXT Output Sink Current Limit
VIN=12V, VOUT=VOUT-0.2V
VIN=12V, VOUT=0V
9
20
EXT Output Sink Current Limit
ISINK2
VISENSE
RR
0.20
0.50
0.85
mA
(Output short)
Current Limit Detector
Threshold
0.23
0.30
0.37
V
VIN=VOUT+1V,f=1kHz,
Ripple Rejection
55
dB
500mVp-p
*1) Depending on the capability of an external PNP transistor. Use an hFE with approximately 100 to 300. The
output current does not always mean continuous current because of the limit of power dissipation of PNP
transistor.
VD part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
-VDET
Detector Threshold
V
×0.98
×1.02
(-VDET) (-VDET) (-VDET)
VHYS
Hysteresis Range
V
×0.01 ×0.02 ×0.03
∆-VDET/
∆Topt
VTCD
Detector Threshold Temperature
Coefficient
-40°C Topt 125°C
ppm/°C
±50
=
=
CD pin detector threshold
2.35
0.12
2.50
0.30
2.65
0.47
2.0
V
µA
V
Internal Current value for
ICD
Delay Time Setting
VINL
WDT part
Symbol
tWD
Minimum Operating Voltage
VOUT pin Voltage
Item
Conditions
CTW=0.1µF
CTW=0.1µF
Min.
200
35
0.8×VOUT
0.0
Typ.
300
70
Max.
510
130
VDD+0.3
0.1
Unit
ms
ms
V
Watchdog Timeout period
Reset Hold Time of WDT
SCK Input Voltage “H”
SCK Input Voltage “L”
tWR
VIHSCK
VILSCK
V
>
-VDET 3.0V
=
500
5000
TSCKW
SCK Input Pulse Width
ns
-VDET 2.9V
=
7
TIMING CHART
R5104VxxxA
DD
V
CE
OUT
V
DET
+V
DET
-V
PLH
t
PLH
t
D
C
TCD
V
WD
t
H
Vref
TW
C
L
Vref
PLH
t
PLH
t
SCK
WR
t
RESET
8
R5104VxxxB
DD
V
CE
OUT
V
DET
+V
DET
-V
PHL
t
PHL
t
D
C
TCD
V
WD
t
H
Vref
TW
C
L
Vref
PHL
t
PHL
t
PHL
t
SCK
WR
t
RESET
9
OPERATION
R5104VxxxA (Watchdog Timer On/Off type)
The R5104VxxxA have the function that turns off the clock input of the watchdog timer. When the watchdog
timer is enabled (CE="H"), the output of the internal regulator and SCK input pulse are supervised, while the
watchdog timer is disabled (CE="L"), only the regulator is supervised.
R5104VxxxB (Standby Function)
Since the standby function is included in the R5104VxxxB, the consumption current of the system can be
reduced. The supply current at the standby mode is very small, typically 0.1µA.
Output Delay Time Setting of the built-in voltage detector
The released delay time from reset of the voltage detector (tPLH) can be calculated with the external capacitor
value CD and the next formula.
tPLH = VTCD x CD/ICD (S)
On the other hand, output delay time for detecting voltage (tPHL) is not specified, the time depends on the
capacitance value of CD.
TYPICAL APPLICATION
VIN
VDD
CE
ISENSE
EXT
RESET
CTW
CCTW
CIN
IOUT
VOUT
SCK
CD
CD
GND
COUT
10
TEST CIRCUITS
Standard Test Circuit
Test Circuit of Supply Current
VIN
VIN
A
VDD
CE
VDD
CE
RESET
CTW
ISENSE
EXT
RESET
CTW
ISENSE
EXT
CCTW
CIN
IOUT
VOUT
SCK
CD
CCTW
CD
VOUT
SCK
CD
GND
COUT
GND
COUT
Test Circuit of Standby Current
Test Circuit of EXT Sink Current
VIN
VIN
A
VDD
CE
RESET
CTW
VDD
CE
RESET
CTW
CIN
ISENSE
EXT
ISENSE
EXT
A
CCTW
VOUT
CCTW
VOUT
SCK
CD
VOUT
SCK
CD
COUT
GND
GND
COUT
Test Circuit of Ripple Rejection
VIN
Vp
VDD
CE
RESET
CTW
P.G.
ISENSE
EXT
IOUT
VOUT
SCK
CD
CCTW
COUT
GND
Vp
11
TYPICAL CHARACTERISTICS
(Unless otherwise provided, VIN=VISENSE=CE=12V, CIN=0.1µF, COUT=10µF, CTW=0.1µF, CD=10µF, Topt=25°C)
1) Output Voltage vs. Output Current
5.0V
3.3V
I
SENSE Resistance=0
Ω
ISENSE Resistance=0
Ω
6.0
5.0
4.0
3.0
2.0
1.0
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN=6V
VIN=9V
VIN=12V
V
V
V
IN=4.3V
IN=9V
IN=12V
0
500
1000
1500
2000
0
500
1000
1500
2000
Output Current IOUT(mA)
Output Current IOUT(mA)
5.0V
3.3V
ISENSE Resistance=1
Ω
I
SENSE Resistance=1
Ω
6.0
5.0
4.0
3.0
2.0
1.0
0.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
100
200
300
400
0
100
200
300
400
Output Current IOUT(mA)
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
5.0V
3.3V
IOUT=100mA
I
OUT=100mA
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
10
20
30
40
50
0
10
20
30
40
50
Input Voltage VIN(V)
Input Voltage VIN(V)
12
3) Output Voltage vs. Temperature
5.0V
3.3V
I
OUT=100mA
I
OUT=100mA
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature Topt(°C)
Temperature Topt(°C)
4) Base Current Limit vs. Output Voltage
5.0V
3.3V
V
IN=12V
VIN=12V
6.0
5.0
4.0
3.0
2.0
1.0
0.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10
15
20
0
5
10
15
20
EXT Output Current ISINK(mA)
EXT Output Current ISINK(mA)
5) Ripple Rejection vs. Frequency
V
IN=
V
OUT
+1V,500mVp-p
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
13
6) Input Transient Response
5.0V
3.3V
27
22
17
12
7
25.3
20.3
15.3
10.3
5.3
Input Voltage
Input Voltage
6.0
5.0
4.3
3.3
2.3
1.3
Output Voltage
4.0
Output Voltage
3.0
0
0.1
0.2
0.3
0.4
0
0.1
0.2
0.3
0.4
Time t (ms)
Time t (ms)
7) Load Transient Response
5.0V
3.3V
125
100
75
125
100
75
Output Current
Output Current
50
50
5.0
3.3
2.3
1.3
Output Voltage
4.0
Output Voltage
3.0
0
0.1
0.2
0.3
0.4
0
0.1
0.2
0.3
0.4
Time t (ms)
Time t (ms)
8) Detector Threshold vs. Temperature
4.0V
2.8V
4.15
2.90
2.85
2.80
2.75
2.70
4.10
4.05
4.00
3.95
3.90
3.85
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature Topt(°C)
Temperature Topt(°C)
14
9) Output Voltage vs. Output Current
10) C Pin Threshold vs. Temperature
D
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
2.80
2.75
2.70
2.65
2.60
2.55
2.50
2.45
2.40
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature Topt(°C)
Temperature Topt(°C)
11) CD Pin External Capacitance vs. Delay Time
12) WDT monitoring Time vs. Temperature
C
CTW=0.1µF
10000
1000
400
380
360
340
320
300
280
260
240
220
200
t
PLH
100
10
1
0.1
I
OUT=100mA
0.01
t
PHL
0.001
0.001
0.01
External Capacitance(µF)
0.1
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature Topt(°C)
13) WDT Reset Time vs. Temperature
14) External Capacitance vs.
WDT monitoring/Reset Time
C
CTW=0.1µF
100
95
90
85
80
75
70
65
60
55
50
10000
1000
tWD
100
10
1
t
WR
0.1
-40 -25 -10
5
20 35 50 65 80 95 110 125
0.001
0.01
0.1
1
Temperature Topt(°C)
External Capacitance(µF)
15
15) Supply Current vs. Temperature
16) Supply Current vs. Input Voltage
5.0V
I
OUT=0mA
I
OUT=0mA
80
60
40
20
0
120
100
80
60
40
20
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
5
10
20
30
40
50
Temperature Topt(°C)
Temperature Topt(°C)
17
)
Current limit detector threshold vs. Temperature 18) Nch Driver Output Current vs. VDS
-VDET=3.4V
0.40
0.38
0.36
0.34
0.32
0.30
0.28
0.26
0.24
0.22
0.20
6.0
5.0
4.0
3.0
2.0
1.0
0.0
V
OUT=3.4V
3.0V
2.5V
2.0V
-40 -25 -10
5
20 35 50 65 80 95 110 125
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Temperature Topt(°C)
VDS(V)
19) Nch Driver Output Current vs. VGS
-VDET=3.4V,RESET=0.05V
0.30
0.25
-40°C
0.20
0.15
25°C
0.10
85°C
0.05
125°C
0.00
0.0
1.0
2.0
3.0
4.0
5.0
V
GS(V)
16
TECHNICAL NOTES
The phase compensation is made with the phase compensation circuit in the IC and the ESR of the output
capacitor to make the operation stable. Therefore connect a 10µF or more value capacitor between VOUT and
GND. The ESR range of the output capacitor should be approximately 1Ω to 10Ω.
The fluctuation and the noise of the supply voltage, or a drastic change of the output voltage by the load
transition of the regulator might be the reason of the mis-operation of the watchdog timer. If the SCK input
pulse frequency is beyond 10kHz, or if the capacitance value of CTW pin is large, the watchdog timer is easily
affected by the fluctuation or noise of the supply voltage, or the fluctuation of the regulator output voltage, and
it may cause an unstable operation.
If VIN (supply voltage) may swing momentary, the regulator output is also swings. If the output of the voltage
regulator becomes lower than detector voltage threshold, the built-in detector may generate the reset signal.
Built-in over-current limit works as monitoring the sink current of EXT pin and limits the current. Considering
the over-current of the corrector current caused by short of EXT pin and GND externally, set a resistor
between EXT pin and the base of the external driver transistor to limit the base current.
Use a 100pF or more value capacitor for CTW pin.
Use a 10pF or more capacitor for CD pin. A capacitor must be connected to CD pin to use R5104VxxxA.
To avoid the mis-operation, during watchdog timer monitoring time, there is some ignoring time against clock
pulse. Therefore, during the ignoring time, input clock pulse (rising edge trigger) is ignored. The ignoring time
VREF2H is approximately as follows:
The time interval for CTW pin voltage from VREF2H to VREF2H−(VREF2H−VREF2L)/4
17
PE-SSOP-10-0707
PACKAGES INFORMATION
• SSOP-10
Unit: mm
PACKAGE DIMENSIONS
3.1±0.2
10
9 8 7 6
1
5
2
3
4
0.55TYP.
0° 10°
0.5±0.2
0.5
0.1
0.2±0.1
0.1
M
TAPING SPECIFICATION
4.0±0.1
+0.1
0
1.5
2.0±0.05
0.3±0.1
6.9
8.0±0.1
2.7MAX.
1.6±0.1
E2
User Direction of Feed
TAPING REEL DIMENSIONS
(1reel=2000pcs)
17.4±1
13.4±1
2±0.5
21±0.8
PE-SSOP-10-0707
PACKAGES INFORMATION
POWER DISSIPATION (SSOP-10)
This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board.
This specification is based on the measurement at the condition below:
Measurement Conditions
Standard Land Pattern
Environment
Board Material
Board Dimensions
Copper Ratio
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plactic (Single sided)
10mm × 10mm × 1.6mm
Approx. 10%
Through-hole
−
Measurement Result
(Topt=25°C,Tjmax=125°C)
Standard Land Pattern
450mW
Free Air
Power Dissipation
300mW
Thermal Resistance
θja=(125−25°C)/0.45W=222°C/W
333°C/W
10
500
450
400
On Board
300
200
Free Air
100
0
0
25
50
7585 100 125 150
Ambient Temperature (°C)
Power Dissipation
Measurement Board Pattern
IC Mount Area (Unit : mm)
RECOMMENDED LAND PATTERN
0.5
0.3
(Unit: mm)
ME-R5104V-0701
MARK INFORMATION
R5104V SERIES MARK SPECIFICATION
• SSOP-10 (0.5mm pitch)
1
5
8
4
7
to
to
: 5104 (Fixed)
1
2
3
4
5
10
9
7
2
8
3
9
4
10 11
: Product Code (refer to Part Number vs. Product Code)
: Lot No.
8
7
1
5
6
R
to 11
6
• Part Number vs. Product Code
Product Code
Part Number
1
2
3
4
5
6
7
R5104V002A
R5104V002B
R5104V003A
R5104V003B
R5104V004A
R5104V004B
R5104V007A
R5104V007B
R5104V008A
R5104V008B
5
5
5
5
5
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
4
4
4
4
4
4
4
4
4
4
0
0
0
0
0
0
0
0
0
0
2
2
3
3
4
4
7
7
8
8
A
B
A
B
A
B
A
B
A
B
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