R5104V SERIES
Microprocessor power management with Watchdog Timer
NO.EA-136-111104
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 (C
D
).
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 (C
TW
).
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
•
•
•
•
•
•
•
•
•
•
•
Supply current ................................................ Typ. 60μA (I
OUT
=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
Package ......................................................... SSOP-10
APPLICATION
•
Power source for microprocessors
1
R5104V
BLOCK DIAGRAMS
R5104VxxxA
CE
9
WDT
Level Shift
RESET
5
6
SCK
2
I
SENSE
4
EXT
3
V
OUT
Current Limit
C
TW
V
DD
7
1
Vref
－
＋
Vref
C
D
8
10
GND
R5104VxxxB
CE
9
WDT
Level Shift
RESET
5
6
SCK
2
I
SENSE
4
EXT
3
V
OUT
Current Limit
C
TW
V
DD
7
1
Vref
－
＋
Vref
C
D
8
10
GND
2
R5104V
SELECTION GUIDE
The output voltage, the detector threshold, and the operation of the CE pin for the ICs can be selected at the
users’ request.
Product Name
R5104Vxxx∗-E2-KG
Package
SSOP-10
Quantity per Reel
2,000 pcs
Pb Free
Yes
Halogen Free
Yes
xxx : The combination of output voltage and detector threshold for each channel can be designated by serial
numbers. (For details, please refer to MARK INFORMATIONS.)
∗
: The operation of the CE pin are options as follows.
(A) Watchdog timer off
(B) Standby mode
"-KG" of the product name shows that the product is for automotive (body system) use with the operating
temperature of -40°C to 125°C.
Please contact our sales representative or distributor for details.
PIN CONFIGURATION
SSOP-10
1
2
3
4
5
10
9
8
7
6
PIN DESCRIPTIONS
Pin No
1
2
3
4
5
6
7
8
9
10
Symbol
V
DD
I
SENSE
V
OUT
EXT
RESET
Pin Description
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.
Output Pin for Voltage Regulator
External Transistor Drive Pin
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.)
Clock Input Pin from Microprocessor
External Capacitor Pin for Setting Reset and Watchdog Timeout
Periods
External Capacitor Pin for Setting Delay Time of Voltage Detector
Control Switch Pin for halting Watchdog timer (A version),
or Chip Enable Pin (B version)
Ground Pin
SCK
C
TW
C
D
CE
GND
3
R5104V
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
PEAK
V
CD
V
CTW
V
OUT
V
RESET
V
CE
V
ISENSE
V
SCK
I
EXT
I
RESET
P
D
T
opt
T
stg
Output Current
Input Voltage
Output Voltage
∗2
Item
Supply Voltage
Peak Input Voltage
∗1
Rating
-0.3 to 50
60
Unit
V
V
V
V
V
V
V
V
V
mA
mA
mW
°C
°C
Voltage of C
D
Pin
Voltage of C
TW
Pin
Voltage of V
OUT
Pin
Voltage of
RESET
Pin
Voltage of CE Pin
Voltage of I
SENSE
Pin
Voltage of SCK Pin
Current of EXT Pin
Current of
RESET
Pin
∗3
V
SS
−0.3
to 7.5
V
SS
−0.3
to 7.5
V
SS
−0.3
to 7.5
V
SS
−0.3
to 7.5
V
SS
−0.3
to V
IN
+0.3
V
SS
−0.3
to V
IN
+0.3
V
SS
−0.3
to V
IN
+0.3
10
20
300
-40 to +125
-55 to +140
Power Dissipation (SSOP-10)
Storage Temperature Range
Operating Temperature Range
∗1)
duration time=200ms
∗2)
Do not force any voltage more than supply voltage to C
D
, C
TW
, V
OUT
, and
RESET
pins.
∗3)
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.
4
R5104V
ELECTRICAL CHARACTERISTICS
•
(Unless otherwise specified, V
IN
=CE=V
ISENSE
=12V,
I
OUT
=100mA,
C
CTW
=0.1μF,
C
D
=0.01μF)
R5104VxxxA (Overall)
Symbol
V
IN
I
SS
Ioff
V
CEH
V
CEL
VR part
Symbol
V
OUT
I
OUT
V
DIF
ΔV
OUT
/ΔI
OUT
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔT
opt
I
SINK1
I
SINK2
V
ISENSE
RR
*1)
Item
Operating Voltage
Supply Current
Supply Current (WDT inactive)
CE Input Voltage"H"
CE Input Voltage"L"
Item
Output Voltage
Output Current(*1)
Dropout Voltage(*1)
Load Regulation(*1)
Line Regulation(*1)
Output Voltage Temperature
Coefficient (*1)
EXT Output Sink Current Limit
EXT Output Sink Current Limit
(Output short)
Current Limit Detector
Threshold
Ripple Rejection
Conditions
V
IN
=12V
I
OUT
=300mA
V
IN
=12V,1mA≤I
OUT
≤1A
I
OUT
=100mA
V
OUT
+1V≤V
IN
≤36V
-40°C≤T
opt
≤125°C
V
IN
=12V, V
OUT
=V
OUT
-0.2V
V
IN
=12V, V
OUT
=0V
9
0.20
0.23
V
IN
=V
OUT
+1V, f=1kHz,
500mVp-p
I
OUT
=0mA
V
IN
=12V,
CE=0V
2.0
0
Min.
×0.98
1.0
Typ.
60
50
Conditions
Min.
Typ.
36
Topt=25°C
Max.
100
90
V
IN
+0.3
0.25
Max.
×1.02
Unit
V
μA
μA
V
V
Unit
V
A
mV
mV
%/V
ppm/°C
50
15
0.05
±50
14
0.50
0.30
55
60
0.10
20
0.85
0.37
mA
mA
V
dB
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
-V
DET
V
HYS
Δ-V
DET
/
ΔT
opt
V
TCD
I
CD
V
INL
WDT part
Symbol
t
WD
t
WR
V
IHSCK
V
ILSCK
T
SCKW
Item
Detector Threshold
Hysteresis Range
Detector Threshold Temperature
Coefficient
C
D
pin detector threshold
Internal Current value for
Delay Time Setting
Minimum Operating Voltage
Item
Watchdog Timeout period
Reset Hold Time of WDT
SCK Input Voltage"H"
SCK Input Voltage"L"
SCK Input Pulse Width
Conditions
Min.
×0.98
(-V
DET
)
×0.01
Typ.
(-V
DET
)
×0.02
±50
Max.
×1.02
(-V
DET
)
×0.03
Unit
V
V
ppm/°C
-40°C≤T
opt
≤125°C
2.35
0.12
V
OUT
pin voltage
Conditions
C
TW
=0.1μF
C
TW
=0.1μF
Min.
200
35
0.8×V
OUT
0
500
5000
2.50
0.30
2.65
0.47
2.0
V
μA
V
Unit
ms
ms
V
V
ns
Typ.
300
70
Max.
510
120
V
DD
+0.3
0.1
-V
DET
≥3.0V
-V
DET
≤2.9V
5
