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ILC5062
SOT-23 Power Supply reset Monitor with 1% precision
Features
• • • • • • • All-CMOS design in SOT-23 or SC70 package A grade ±1% precision in Reset Detection Standard grade : ±2% precision in Reset Detection Only 1µA of Iq Over 2mA of sink current capability Built-in hysteresis of 5% of detection voltage Voltage options of 2.6, 2.7, 2.8, 2.9, 3.1, 4.4, and 4.6V fit most supervisory applications • Active low push-pull output
Description
All-CMOS voltage monitoring circuit in either a 3-lead SOT-23 or SC70 package offers the best performance in power consumption and accuracy. The ILC5062 is available in a series of ±1% (A-grade) or 2% (standard grade) accurate trip voltages to fit most microprocessor applications. Even though its output can sink over 2mA, the device draws only 1µA in normal operation. Additionally, a built-in hysteresis of 5% of detect voltage simplifies system design.
Applications
• • • • Microprocessor reset circuits Memory battery back-up circuitry Power-on reset circuits Portable and battery powered electronics
Block Diagram
Pin-Package Configurations
VIN
Top View
VOUT
VOUT
1
VOUT
1
SC-70
VREF VSS Complementary CMOS Output
3
VIN VSS 2
SOT-23
3
VIN
VSS
2
Rev. 2.2 8/14/02
PRODUCT SPECIFICATION
ILC5062
Absolute Maximum Ratings
Parameter Input Voltage Output Current Output Voltage Continuous Total Power Dissipation (SOT-23) Operating Ambient Temperature Storage Temperature Symbol VIN IOUT VOUT PD Topr Tstg Ratings 12 50 VSS-0.3~VIN=+0.3 150 -30~+80 -40~+125 Units V mA V mW °C °C
Electrical Characterisitcs ILC5062 (TA=25°C)
Parameter Detect Fail Voltage Detect Fail Voltage Hysteresis Range Supply Current Symbol VDF VDF VHYS Conditions A grade Standard grade VIN = 1.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VDF = 2.1 ~ 6.0V N-ch VDS = 0.5V VIN = 1.0V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V P-Ch VDS = 2.1V VIN = 8V Temperature Characteristics ∆VDF/(∆Topr•VDF) -30°C < Topr < 80°C Delay Time (Release tDLY Voltage Output Inversion) (VDR to VOUT Inversion) -200 Min. VDF X 0.99 VDF X 0.98 VDF X 0.02 Typ. VDF VDF VDF X 0.05 0.9 1.0 1.3 1.6 2.0 Max. VDF X 1.01 VDF X 1.02 VDF X 0.08 2.6 3.0 3.4 3.8 4.2 10.0 Units V V V
ISS
µA
Operating Voltage Output Current
VIN
1.5 2.2 7.7 10.1 11.5 13.0 -10
V
IOUT
mA
±100
+200 0.1
ppm/°C ms
Note1: An additional resistor between the VIN pin and supply voltage may cause deterioration of the characteristics due to increasing of VDR. Note2: Vout=Gnd when 1V< VIN <1.5V Note3: Iout < 10uA when VIN <1V
Rev. 2.2 8/14/02
2
PRODUCT SPECIFICATION
ILC5062
Functional Description
The following designators 1~6 refer to the timing diagram below. 1. While the input voltage (VIN) is higher than the detect voltage (VDF), the output voltage at VOUT pin equals the input voltage at VIN pin. 2. When the input VIN voltage falls lower than VDF, VOUT drops near ground voltage. 3. If the input voltage decreases below the minimum operating voltage (VMIN), the VOUT output voltage will be undefined. 4. During an increase of the input voltage from the VSS voltage, VOUT is undefined at the voltage below VMIN. Exceeding the VMIN level, the ouput stays at the ground level (VSS) between the minimum operating voltage (VMIN) and the detect release voltage (VDR). 5. If the input voltage increases more than VDR, the output voltage at VOUT pin equals the input voltage at VIN pin. 6. The difference between VDR and VDF is the hysteresis in the system.
INPUT VOLTAGE (VIN) DETECT RELEASE VOLTAGE (VDR) 6 DETECT FAIL VOLTAGE (VDF)
MINIMUM OPERATING VOLTAGE (VMIN) GROUND VOLTAGE (VSS) OUTPUT VOLTAGE (VOUT)
GROUND VOLTAGE (VSS) 1 2 3 4 5
Rev. 2.2 8/14/02
3
ILC5062
PRODUCT SPECIFICATION
Typical Performance Characteristics - General conditions for all curves
Supply Current vs Input Voltage
4 SUPPLY CURRENT ISS (µA) ILC5062M-27 TA = 80˚C 3 25˚C 2 -30˚C 1
Supply Current vs Input Voltage
4 SUPPLY CURRENT ISS (µA) ILC5062M-44
3
TA = 80˚C
25˚C 2 -30˚C 1
0 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE VIN (V)
0 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE VIN (V)
N-ch Driver Output Current vs VDS
40
OUTPUT CURRENT:IOUTNch (mA)
N-ch Driver Output Current vs VDS
80 OUTPUT CURRENT:IOUTNch (mA) 70 60 3.5V 50 3.0V 40 30 20 10 1.5V 0 0 1 2 VDS (V) 3 4 2.0V 2.5V ILC5062M-44 VIN = 4.0V
ILC5062M-27
30 VIN = 2.5V 20 2.0V 10 1.5V
0 0 0.5 1.0 1.5 VDS (V) 2.0 2.5 3.0
VOUT vs VIN
VOUT vs VIN
4 OUTPUT VOLTAGE:VOUT (V) ILC5062M-27
OUTPUT VOLTAGE:VOUT (V) 6
ILC5062M-44 TA = 80˚C 25˚C -30˚C
5
3
TA = 80˚C 25˚C -30˚C
4
3
2
2
1
1 0
0 0 1 2 3 4 INPUT VOLTAGE VIN (V)
0
1
2
3
4
5
6
INPUT VOLTAGE VIN (V)
4
Rev. 2.2 8/14/02
PRODUCT SPECIFICATION
ILC5062
Typical Performance Characteristics - General conditions for all curves
N-ch Driver Output Current vs Input Voltage
20
OUTPUT CURRENT:IOUTNch (mA)
N-ch Driver Output Current vs Input Voltage
25 OUTPUT CURRENT:IOUTNch (mA) ILC5062M-44 VDS = 0.5V TA = -30˚C
ILC5062M-27 VDS = 0.5V
20
15
TA .