LC9018CB3TR263DC

LC9018 Low Voltage Detector With Built-in Delay Circuit DESCRIPTION FEATURES LC9018 is a series of high precision voltage detector with ultra-low current consumption (4.5uA typ. at Vin=3.0V) and a built-in delay circuit. It can work at very low voltage, which makes it perfect for system reset.      LC9018 is composed of high precision voltage reference, comparator, delay circuit, output driver and resistor array. Internally preset detect voltage has a low temperature drift and requires no external trimming.  High-precision detection voltage: 2% Detection voltage: 2.63V and 2.93V (customized other voltages) Built-in power on reset delay time circuit: Refer to selection guide Operating voltage range: 1.2V~6V Ultra-low current consumption: 4.5uA typ. (at Vin=3.0V) Two output forms: CMOS (active low) and Nchannel open-drain (active low) APPLICATIONS Two type of output, CMOS and N-channel opendrain are available.  LC9018 is available in TSOT-23 package which is Pb free.     Power monitor for portable equipment such as PDA, DSC, mobile phone, notebook, MP3 CPU and logic circuit reset Battery checker Battery back-up circuit Power failure detector ELECTRICAL CHARACTERISTICS TYPICAL APPLICATION Detector threshold=2.93V 6 VDD LC9018 Supply current(uA) VIN 5 VOUT VSS 4 3 2 -40℃ 1 25℃ 70℃ 0 0 www.leadchip.com.cn 1 1 2 3 4 Input Voltage(V) 5 6 Your final power solution LC9018 ORDERING INFORMATION PIN CONFIGURATION Product classification LC9018 □ 1□ 2□ 3□ 4□ 5□ 6 Code Marking XXX: Detector voltage XXXDC/ D:Delay time XXXDN D:200mS Description Temperature&Rohs: C:-40~85C ,Pb Free Rohs Std. Package type: B3:SOT-23-3(A) B3B:SOT-23-3(B) Packing type: TR:Tape&Reel (Standard) Detector voltage: e.g. 263=2.63V 293=2.93V Delay time: D:200mS Output forms: C:CMOS N:Nch □1 □2 □3 □4 □5 □6 LC9018CB3TR□□□ C:CMOS N:Nch Product classification LC9018CB3BTR□□□ Marking XXX: Detector voltage XXXDC/ D:Delay time XXXDN D:200mS C:CMOS N:Nch Vss VDD Vout Ground pin Supply voltage input Voltage detection output pin ABSOLUTE MAXIMUM RATING Parameter Value Input voltage Output voltage range Maximum output current Ambient temperature(TA) Power dissipation TSOT-23 Storage temperature(TS) Lead temperature & time -0.3V-8V -0.3V- 8V 70mA -40C -85C 250mW -40C -150C 260C,10S Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED WORK CONDITIONS Item Input voltage range Ambient temperature www.leadchip.com.cn Min Recommended Max. Unit 25 6 85 V C 1.2 -40 2 Your final power solution LC9018 ELECTRICAL CHARACTERISTICS LC9018CXXTR263DC/N(2.63V) (TOPT＝25℃,Unless otherwise specified.) Symbol -VDET ISS VDDH VDDL Parameter Detector threshold Current consumption Maximum operating voltage Minimum operating voltage IOUT Output current TDET Output delay time Reference data Min. Typ. Max. Conditions 2.577 0.5 V uA V V 2.0 mA 8 uS Reference data Min. Typ. Max. Unit VDD=4.63V Pch VDS=-2.1V，VDD=4.5V VDD drop from VDET+100mV to VDET-100mV 1.0 2.63 4.5 2.683 10 6 Unit LC9018CXXTR293DC/N(2.93V) (TOPT＝25℃,Unless otherwise specified.) Symbol -VDET ISS VDDH VDDL Parameter Conditions Detector threshold Current consumption Maximum operating voltage Minimum operating voltage IOUT Output current TDET Output delay time 2.871 VDD=4.93V Pch VDS=-2.1V，VDD=4.5V VDD drop from VDET+100mV to VDET-100mV 1.0 2.93 4.5 2.989 10 6 0.5 V uA V V 2.0 mA 8 uS ELECTRICAL CHARACTERISTICS BY OUTPUT DELAY TIME Part Number Test Condition LC9018CXXTRXXXDC/N VDD=1.0V to Vdet+1.0V www.leadchip.com.cn 3 Output Delay Time Min. Typ. Max. Unit 140 ms 200 300 Your final power solution LC9018 BLOCK DIAGRAM VDD Vout _ Vref Delay Time circuit + Vss N channel open drain VDD _ Vref Delay Time circuit + Vout Vss CMOS output FUNCTION DESCRIPTION VDD Ra _ Delay + Vref Vout Rb Vss High precision low temperature co-efficiency reference voltage is applied to the negative input of a comparator. Input voltage, divided by resistor array of Ra and Rb, is applied to the positive input of the comparator. Output of the comparator passes a delay circuit and a series of buffer to drive the output CMOS pair. VDET =VREF*(1+Ra/Rb) www.leadchip.com.cn 4 Your final power solution LC9018 Ⅰ Ⅱ Ⅳ Ⅲ B Supply A Voltage VDD Ⅴ Detector Treshold(Vdet) Release Voltage Minimum Operating Voltage Vss Output Voltage (Vout) Tdelay Vss No. I II III IV V Operation status Output status VDD>Vdet VDD drops below Vdet VDD drops further below VDDL VDD rises above VDDL VDD rises above Vdet Output voltage is equal to the supply voltage Output voltage equals to GND level Output voltage is undefined Output voltage equals to GND level Output voltage equals to supply voltage after Tdelay TEST CIRCUITS (1) Supply current test circuit (2) Detector threshold test circuit VDD VIN LC9018 VOUT VOUT VSS (3) NCH Drive Output Current Test Circuit (4) PCH Drive Output Current Test Circuit VDS VDD VIN LC9018 VSS www.leadchip.com.cn VDD VOUT IOUT VIN VDS LC9018 VSS 5 VOUT IOUT VDD - VDS Your final power solution LC9018 TYPICAL PERFORMANCE CHARACTERISTICS 1) Supply current vs. Input voltage 2) Detector Threshold vs. Temperature Detector threshold=2.93V 3.1 5 3.0 Detector threshold(V) Supply current(uA) Detector threshold=2.93V 6 4 3 2 -40℃ 1 2.9 2.8 2.7 2.6 25℃ 70℃ 2.5 0 0 1 2 3 4 Input Voltage(V) 5 -40 -30 -20 -10 0 6 3) Nch Driver Output Current vs. VDS 4) NCH Driver Output Current vs. Input Voltage Detector threshold=2.93V Detector threshold=2.93V 20 25 -40℃ 25℃ 70℃ 18 16 20 Output Current(mA) Output Current(mA) 10 20 30 40 50 60 70 80 90 Temperature(℃) 14 12 10 8 6 4 15 10 5 VDD=2V VDD=1V 2 0 0.0 0.5 1.0 1.5 VDS(V) 2.0 2.5 0 3.0 0 1 2 Input Voltage Vin(V) 3 4 5) PCH Driver Output Current vs. Input Current Detector threshold=2.93V 40 Vds=0.5V Vds=1.0V Vds=1.5V Vds=2.0V 35 Output Current(mA) 30 25 20 15 10 5 0 0 1 2 3 4 5 Input Voltage Vin(V) www.leadchip.com.cn 6 7 6 Your final power solution LC9018 PACKAGE LINE Package TSOT-23 Devices per reel 3000pcs Package dimension： Unit：mm www.leadchip.com.cn 7 Your final power solution