LOW VOLTAGE DETECTOR WITH
OUTPUT DELAY
R3115Z SERIES
NO. EA-098-0301
OUTLINE
The R3115Z Series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low sup-
ply current, which can be operated at an extremely low voltage and is used for system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector threshold setting, an
output driver, a hysteresis circuit, and an output delay circuit. The detector threshold is fixed with high accuracy inter-
nally and does not require any adjustment. Two output types, Nch open drain type and CMOS type are available.
Since the package is WL-CSP high density mounting on boards is possible.
,
FEATURES
•
Built-in Output Delay Circuit ..................................................... Typ. 100ms with an external capacitor: 0.022µF
•
Ultra-low Supply Current
..........................................................................
Typ. 0.8µA (V
DD
=3.5V)
•
Wide Range of Operating Voltage
...........................................................
0.7∼6.0V (Topt=25°C)
•
Detector Threshold ..................................................................... Stepwise setting with a step of 0.1V in the range of
0.9V to 5.0V is possible.
•
High Accuracy Detector Threshold
.......................................................
±2.0%
•
Low Temperature-Drift Coefficient of Detector Threshold
........
Typ. ±100ppm/°C
•
Two Output Types
.........................................................................................
Nch Open Drain and CMOS
•
Two Types of Packages................................................................ WL-CSP
APPLICATIONS
•
Micro controller and Logic Circuit Reset
•
Battery Checker
•
Window Comparator
•
Wave Shaping Circuit
•
Battery Back-up Circuit
•
Power Failure Detector
1
R3115Z
BLOCK DIAGRAMS
•
Nch Open Drain Output (R3115Zxx1A)
V
DD
R
D
OUT
+
-
Vref
GND
C
D
•
CMOS Output (R3115Zxx1C)
V
DD
R
D
+
OUT
-
Vref
GND
C
D
2
R3115Z
SELECTION GUIDE
The detector threshold, the output type, and the taping type of R3115Z Series can be designated at the users’ re-
quest by specifying the part number as follows;
R3115Z
xx
1
x
-
xx
↑ ↑ ↑
a b c
Code
a
Setting Detector Threshold (-V
DET
);
Stepwise setting with a step of 0.1V in the range of 0.9V to 5.0V is possible.
Designation of Output Type;
b
A: Nch Open Drain
C: CMOS
c
Designation of Taping Type;
TR is prescribed as standard directions. (Refer to Taping Specifications)
Contents
←
Part Number
PIN CONFIGURATIONS
V
DD
4
Mark Side
GND 1
2 C
D
3 OUT
OUT
V
DD
C
D
Bump Side
GND
PIN DESCRIPTIONS
Pin No.
1
2
3
4
Symbol
GND
C
D
OUT
V
DD
Ground Pin
Pin for External Capacitor (for setting output delay)
Output Pin (Output “L” at detector threshold, Out-
put “H” at released voltage)
Voltage Supply Pin
Description
3
R3115Z
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
OUT1
V
OUT2
I
OUT
Topt
Tstg
Supply Voltage
Output Voltage (CMOS)
Output Voltage (Nch)
Output Current
Operating Temperature Range
Storage Temperature Range
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under any condi-
tions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute
maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do
not necessarily imply functional operation below these limits.
Power Dissipation
Power dissipation depends on the condition of the mounting on board, the experiment result below is just an example.
WL-CSP-4 Power Dissipation Example
Conditions: Mounted on board (Wind velocity: 0m/s)
Board: FR-4 (double-layer)
Board Size: 40mm×40mm×t1.6mm
Wire rate: 50%
Result: 530mW
Thermal Resistance: 186°C/W
700
600
500
400
300
200
100
0
0
25
50
75
100
125
Item
Rating
6.5
V
SS
-0.3∼V
DD
+0.3
V
SS
-0.3∼6.5
20
-40∼85
-55∼125
Unit
V
V
V
mA
°C
°C
P
D
(mW)
Temperature Topt(°C)
4
R3115Z
ELECTRICAL CHARACTERISTICS
•
R3115Z091A/C
Symbol
-V
DET
V
HYS
I
SS
V
DDH
V
DDL
Item
Detector Threshold
Detector Threshold Hysteresis
Supply Current
Maximum Operating Voltage
Minimum Operating
Voltage*
Note1
Output Current
(Driver Output Pin)
CD pin Threshold Voltage
CD pin Output Current
Output Delay Resistance
Detector Threshold
Temperature Coefficient
-40°C
≤
Topt
≤
85°C
Nch
Pch
Topt=25°C
-40°C
≤
Topt
≤
85°C
V
DS
=0.05V, V
DD
=0.70V
V
DS
=0.50V, V
DD
=0.85V
V
DS
=-2.1V, V
DD
=4.5V
V
DD
=0.99V
V
DS
=0.10V V
DD
=0.70V
,
V
DS
=0.50V V
DD
=0.85V
,
10
0.05
1.0
0.396
2
10
3.25
120
0.90
3.5
0.495
70
400
6.50
±100
13.00
0.594
V
DD
=0.8V
V
DD
=1.9V
Conditions
Min.
0.882
0.027
Typ.
0.900
0.045
0.6
0.5
Max.
0.918
0.063
2.0
2.0
6.0
0.7
0.8
Topt=25°C
Unit
V
V
µ
A
V
V
µA
mA
mA
V
µA
MΩ
ppm/
°C
I
OUT
V
TCD
I
CD
R
D
∆-V
DET
/
∆Topt
5
