R3500S Series
42 V Input 4ch Window Voltage Detector
No. EA-521-210302
1
The R3500S is a 4ch window voltage detector with manual reset function suited for systems requiring
functional safety. This device monitors over and under voltage from the multiple power supplies to SoCs,
memories and sensors to continuously supervise the system operating at normal voltage.
● Power supply from battery enables the voltage detector to operate independently from the power source.
● High-accuracy detection of the over and under voltages from -1.25% to 0.75% and the hysteresis of Max. 0.75%.
● Management of multiple power supplies with a single chip to save space.
● Operating Voltage Range (Max. Rating):
3.0 V to 42.0 V (50.0 V)
● Operating Temperature Range: −40°C to 105°C
● Supply Current: Typ. 10 µA
● Overvoltage Detection: 1.0 V to 5.9 V (0.01 V step)
● Undervoltage Detection:0.9 V to 5.0 V (0.01 V step)
● Detection Release Hysteresis: Max. 0.75%
(−40°C to 105°C)
● Detection Voltage Accuracy:
±0.5%
(Ta = 25°C)
-1.25% to 0.75% (−40°C to 105°C)
● Detection Delay Time: Typ.20 µs
● Rele
ase Delay Time: Typ. 4 ms (C
D
= 0.01 µF)
● Output Type: Nch. Open Drain
Product Name
Package
Quantity per Reel
R3500SxxxA-E2-FE HSOP-18 1,000 pcs
xxx: The combination of an overvoltage detection setting
voltage (V
OVSET
)
and an undervoltage detection setting
voltage (V
UVSET
) applied to 4ch.
Refer to “Product-Specific Electrical Characteristic” for
details
HSOP-18
5.2 x 6.2 x 1.45 (mm)
● Power Supply Voltage Monitoring for Laptop PCs, Digital TVs, Cordless Phones and Private LAN Systems
● Power Supply Voltage Monitoring for Multi-cell Battery Using Devices
OVERVIEW
KEY BENEFITS
KEY SPECIFICATIONS
SELECTION GUIDE
PACKAGE
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
R
3
VDD
VDD
CD1
GND
R3500S
SENSE3
Battery
SENSE2
SENSE1
C
D
DCDC
DCDC
DCDC
LDO
Vin1
Vin2
Vin3
Vin4
SOC
SENSE4
DOUT1
DOUT2
DOUT3
DOUT4
VCCDET
GPI0
GPI1
GPI2
GPI3
GPI4
CD2
CD3
CD4
MR
GPO
R
VCCDET
R
1
R
2
R
4
R3500S
No. EA-521-210302
2
SELECTION GUIDE
The overvoltage detection setting voltage (V
OVSET
) and the undervoltage detection setting voltage (V
UVSET
) are
user-selectable options.
Selection Guide
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R3500SxxxA-E2-FE HSOP-18 1,000 pcs Yes Yes
xxx: The combination of an overvoltage detection setting voltage (V
OVSET
) and an undervoltage detection
setting voltage (V
UVSET
).
Refer to Product-specific Electrical Characteristics for more details.
BLOCK DIAGRAM
R3500S Block Diagram
DOUT
1 - 4
SENSE
1 - 4
VREF
1 - 4
GND
Delay
Circuit
1 - 4
CD 1- 4
VDD
+
－
+
－
OVCMP
1 - 4
UVCMP1 - 4
DRV
1 - 4
VCCDET
INT
Regulator
OVLO
UVLO
MR
MR
UVCMP 1 - 4
OVCMP 1 - 4
VCC
VCC
GND
GND