Document
R3117x SERIES
LOW VOLTAGE DETECTOR with SENSE pin
NO.EA-186-080617
OUTLINE
The R3117x series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low supply 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, resistors for detector threshold setting, an output driver and a hysteresis circuit. The detector threshold is fixed with high accuracy internally and does not require any adjustment.
The tolerance of the detector threshold is ±15mV (-VDET <= 1.5V) or ±1.0% (1.5V< -VDET). Since the sense pin is separated from the VDD pin of the IC, therefore, even if the sense pin voltage becomes to 0V, the output voltage keeps its "L" level.
Two output types, Nch open drain type and CMOS type are available. Three types of packages, SOT-23-5, SC-88A, and DFN(PLP)1010-4 are available.
FEATURES∗
• Supply Current ......................................................................Typ. 0.29µA (VDD=6.0V)
Consumption current through SENSE pin is not included.
• Range of Operating Voltage..................................................1.0V to 6.0V (-40°C <= Topt <= 105°C) • Detector Threshold Range....................................................Stepwise setting with a step of 0.1V in the range
of 0.7V to 5.0V • Accuracy Detector Threshold................................................±1.0% (-VDET >= 1.6V), ±15mV (-VDET<1.6V) • Temperature-Drift Coefficient of Detector Threshold ............Typ. ±30ppm/°C • Output Types.........................................................................Nch Open Drain and CMOS • Packages ..............................................................................SOT-23-5, DFN(PLP)1010-4, SC-88A
∗ Topt=25°C, unless otherwise noted.
APPLICATIONS
• CPU and Logic Circuit Reset • Battery Checker • Window Comparator • Wave Shaping Circuit • Battery Back-up Circuit • Power Failure Detector
1
R3117x
BLOCK DIAGRAMS
Nch Open Drain Output (R3117xxxxA) SENSE
CMOS Output (R3117xxxxC) SENSE
VDD
DOUT VDD
DOUT
Vref Vref
GND
GND
SELECTION GUIDE
The package type, the detector threshold, the output type and the taping type for the ICs can be selected at the users’ request.
The selection can be made with designating the part number as shown below;
R3117xxxxx-xx-x ← Part Number
↑ ↑ ↑↑ ↑ ↑ a b a' c d e
Code a, a'
b c d e
Contents
Designation of Package Type;
DFN(PLP)1010-4 : R3117Kxx1x-xx-x
SOT-23-5
: R3117Nxx1x-xx-x
SC-88A
: R3117Qxx2x-xx-x
Setting Detector Threshold (-VDET); Stepwise setting with a step of 0.1V in the range of 0.7V to 5.0V is possible.
Designation of Output Type; A: Nch Open Drain C: CMOS
Designation of Taping Type ; TR (Refer to Taping Specifications; TR type is the standard direction.)
Designation of Composition of pin plating
-F : Lead free solder plating (SOT-23-5, SC-88A)
None: Au plating
(DFN(PLP)1010-4)
2
PIN CONFIGURATIONS
• DFN(PLP)1010-4*1
Top View
Bottom View
43
34
R3117x
1
• SOT-23-5
54
2
21
• SC-88A
54
(mark side)
(mark side)
123
123
PIN DESCRIPTIONS
• DFN(PLP)1010-4*1
Pin No. Symbol
Description
1
DOUT
Output Pin
("L" at detection, "H" at released)
2 SENSE Voltage Detector Voltage Sense Pin
3 GND Ground Pin
4 VDD Input Pin
*1) Tab in the parts have GND level. (They are connected to the back side of this IC.) Do not connect to other wires or land patterns.
• SC-88A
Pin No. Symbol
Description
1 VDD Input Pin 2 NC No Connection*2
3 GND Ground Pin
4 SENSE Voltage Detector Voltage Sense Pin
5
DOUT
Output Pin
("L" at detection, "H" at released)
*2) In terms of NC pin of SC-88A, connect it to the GND or use it as open.
• SOT-23-5
Pin No. Symbol
Description
1
DOUT
Output Pin
("L" at detection, "H" at released)
2 VDD Input Pin
3 GND Ground Pin
4 NC No Connection
5 SENSE Voltage Detector Voltage Sense Pin
3
R3117x
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
VDD VSENSE VOUT
IOUT
PD
Supply Voltage SENSE Pin Voltage Output Voltage (Nch Open Drain Output) Output Voltage (CMOS Output) Output Current Power Dissipation (SOT-23-5)* Power Dissipation (DFN(PLP)1010-4)*
7.0 7.0 VSS−0.3 to 7.0 VSS−0.3 to VDD+0.3 20 420 400
Power Dissipation (SC-88A)*
380
Topt Tstg
Operating Temperature Range Storage Temperature Range
−40 to 105 −55 to 125
* ) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
Unit V V V mA
mW
°C °C
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.
ELECTRICAL CHARACTERISTICS
• R3117xxxxA/C
values indicate −40°C <= Topt <= 105°C, unless otherwise noted. Topt=25°C
Symbol
Item
Conditions
Min. Typ. Max. Unit
-VDET
Detector Threshold (Topt=25°C).