RT9816A-12GY

RT9816 Micro-Power Voltage Detectors with Manual Reset General Description The RT9816 is a micro-power voltage detector with deglitched manual reset input supervising the power supply voltage level for microprocessors (μP) or digital systems. It provides internally fixed threshold levels with 0.1V per step ranging from 1.0V to 5V, which covers most digital applications. It features low supply current of 3μA. The RT9816 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal will last the whole period before VDD recovering. Once VDD recovered upcrossing the threshold level, the reset signal will be released after a certain delay time. To pull reset signal low manually, just pull the manual reset input (MR) below the specified VIL level. RT9816 is provided in SC-82 package. Features Internally Fixed Threshold 1.0V to 5V in 0.1V Step High Accuracy ±1.5% Low Supply Current 3μA No External Components Required Quick Reset within 20μs Built-in Recovery Delay Include 0ms, 55ms, 220ms, 450ms Options 800ns Glitch Immunity of Manual Reset Input Low Functional Supply Voltage 0.9V N-Channel Open-Drain Output, Small SC-82 Package RoHS Compliant and 100% Lead (Pb)-Free Applications Computers Controllers Intelligent Instruments Critical μP and μC Power Monitoring Portable/Battery-Powered Equipment Ordering Information RT9816 Package Type Y : SC-82 Operating Temperature Range C : Commercial Standard P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Threshold Voltage 12 : 1.2V 13 : 1.3V : 49 : 4.9V 50 : 5.0V Reset Active Timeout Period A = 0ms (RESET) B = 55ms (RESET) C = 220ms (RESET) D = 450ms (RESET) E = 0ms (RESET) F = 55ms (RESET) G = 220ms (RESET) H = 450ms (RESET) Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100%matte tin (Sn) plating. DS9816-03 March 2007 Marking Information For marking information, contact our sales representative directly or through a RichTek distributor located in your area, otherwise visit our website for detail. Pin Configurations (TOP VIEW) VDD 4 1 GND MR 3 2 RESET/ RESET SC-82 Note : There is no pin1 indicator on top mark for SC-82 type, and pin 1 will be lower left pin when reading top mark from left to right. Pin2 of SC-82 is wider than other pins. www.richtek.com 1 RT9816 Typical Application Circuit VDD up RESET/ RESET 100k Pull Up RT9816 GND RESET/ RESET VDD MR Functional Pin Description Pin Name GND RESET RESET MR Pin Function Ground Pin Active Low Open-Drain Reset Output Active High Open-Drain Reset Output Manual Reset Power Pin VDD Function Block Diagram VDD MR RESET/ RESET VSET Threshold Voltage Setting CMP Timer N MOS GND POR Power On Reset www.richtek.com 2 DS9816-03 March 2007 RT9816 Absolute Maximum Ratings (Note 1) Terminal Voltage (with Respect to GND) VDD ------------------------------------------------------------------------------------------------------------------------ −0.3V to 6.0V All Other Inputs -------------------------------------------------------------------------------------------------------- −0.3V to VDD+0.3V Input Current, IVDD ----------------------------------------------------------------------------------------------------- 20mA Power Dissipation, PD @ TA = 25°C SC-82 -------------------------------------------------------------------------------------------------------------------- 0.25W Package Thermal Resistance (Note 4) SC-82, θJA --------------------------------------------------------------------------------------------------------------- 400°C Lead Temperature (Soldering, 10sec.) ---------------------------------------------------------------------------- 260°C Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 125°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 3) Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range ---------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics (VDD = 3V, unless otherwise specified) Parameter O perating V DD ( VOUT) Range S upply Current R eset Threshold M R Input Threshold M R Glitch Rejection Threshold Voltage Accuracy V DD Drop to Reset Delay RT9816A/E Reset Active Time Out Period RT9816B/F RT9816C/G RT9816D/H RESET Output Voltage Low Hysteresis Width Symbol V DD IDD V TH V IL V IH ΔV TH tRD Test Conditions Min 0.9 Typ -3 1.2 to 5.0 --800 -20 0 55 220 450 -0.01VT H Max 6 8 -0.25V DD --+1.5 --75 297 608 0.4 -- Units V μA V V ns % μs ms ms ms ms V V V TH = 3 V , VDD = 4.5V TA = 27 °C TA = 27° C TA = 27° C, V TH > 1 .2V TA = 27° C, V TH > 1 .2V TA = 27° C Drop = V TH - 125mV ---0.7V DD -−1.5 --- tRP VDD ≥ 1.02×VTH 35 143 292 V OL VHYS 3 = V DD < VTH IS INK >3.5mA --- DS9816-03 March 2007 www.richtek.com 3 RT9816 Note 1. Stresses listed as the above “ Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. Devices are ESD sensitive. Handling precaution recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. θJA i s measured in the natural convection at T A = 25 °C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. www.richtek.com 4 DS9816-03 March 2007 RT9816 Typical Operating Characteristics Nch Driver Output Current vs. VDS 2.4 Nch Driver Output Current vs. VDS 60 RT9816A-12 VDD = 1.1V RT9816C-30 VDD = 2.8V VDD = 2.5V Output Current (mA) 2 1.6 1.2 0.8 0.4 0 0 0.3 0.6 0.9 50 Output Current (mA) 40 30 VDD = 2.0V 20 10 0 VDD = 1.0V VDD = 1.5V 1.2 1.5 0 0.5 1 1.5 2 2.5 3 3.5 VDS (V) VDS (V) Nch Driver Output Current vs. VDS 120 100 Output Voltage vs. Input Voltage 7 6 RT9816A-45 RT9816 Output Current (mA) Output Volgate (V) 5 4 3 80 60 40 20 0 0 1 2 3 4 5 VDD = 4.4V = 4.0V = 3.5V = 3.0V = 2.5V = 2.0V = 1.5V 4.5V 2 1 0 0 1 2 3 4 5 6 1.2V VDS (V) Input Volgate (V) Supply Current vs. Input Voltage 6 5 Supply Current vs. Input Voltage 4 RT9816A-12 80°C RT9816C-30 80°C 3.5 Supply Current (uA) Supply Current (uA) 3 2.5 2 1.5 1 0.5 0 4 25°C 3 2 1 0 0 1 2 3 4 5 6 25°C -30°C -30°C 0 1 2 3 4 5 6 Input Voltage (V) Input Voltage (V) DS9816-03 March 2007 www.richtek.com 5 RT9816 Supply Current vs. Input Voltage 4 3.5 Power-Down Reset Delay vs. Temperature 14 RT9816A-45 RT9816A-12 Power-Down Reset Delay (us) 80°C 25°C -30°C 12 10 8 6 4 2 0 Supply Current (uA) 3 2.5 2 1.5 1 0.5 0 0 1 2 3 4 VDROP = 200mV VDROP = 150mV VDROP = 250mV 5 6 -50 -25 0 25 50 75 100 125 Input Voltage (V) Temperature (°C) Power-Down Reset Delay vs. Temperature 45 Power-Down Reset Delay vs. Temperature 45 RT9816C-30 RT9816A-45 Power-Down Reset Delay (us) 35 30 25 20 15 10 5 0 -50 -25 0 25 50 75 100 125 Power-Down Reset Delay (us) 40 40 35 30 25 20 15 VDROP = 200mV VDROP = 150mV VDROP = 200mV VDROP = 150mV VDROP = 250mV VDROP = 250mV 10 5 0 -50 -25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) Reset Threshold Deviation vs. Temperature 6 Nch Driver Sink Current vs. Input Voltage 40 RT9816 5.0V RT9816C-30, VDS = 0.5V -30°C 25°C 35 Reset Threshold (V) 4.5V 4 Sink Current ISINK (mA) 5 30 25 20 15 10 5 0 4.2V 80°C 3 2.2V 2 1.2V 1 -50 -25 0 25 50 75 100 125 0 0.5 1 1.5 2 2.5 3 3.5 Temperature (°C) Input Voltage(V) www.richtek.com 6 DS9816-03 March 2007 RT9816 Nch Driver Sink Current vs. Input Voltage 50 Power-Up Reset Time-Out vs. Temperature 500 -30°C Sink Current ISINK (mA) 40 Power-Up Reset Time-Out (ms) RT9816A-45, VDS = 0.5V RT9816C 400 25°C VTH = 2.9V 300 30 80°C 20 200 VTH = 3.0V 10 100 0 0 1 2 3 4 5 0 -50 -25 0 25 50 75 100 125 Input Voltage(V) Temperature (°C) Power-Up Reset Time-Out vs. Temperature 100 Output Delay Time vs. Load Capacitance 1000 Power-Up Reset Time-Out (us) RT9816A Output Delay Time (ms) 80 100 60 10 VTH = 5.0V 40 1 VTH = 1.2V VTH = 4.5V 20 0.1 VTH = 4.5V 0 -50 -25 0 25 50 75 100 125 0.01 0.0001 0.0010 0.0100 0.1000 1.0000 Temperature (°C) Load Capacitance (uF) Nch Driver Output Current vs. VDS 160 Nch Driver Output Current vs. Input Voltage 60 Nch Driver Output Current (mA)1 Nch Driver Output Current (mA)1 RT9816G-31 140 120 100 80 60 40 20 0 0 1 2 3 4 5 6 RT9816G-31 VDS = 0.5V 50 40 30 20 10 0 0 1 2 3 4 -30°C 25°C VDD = 6.0V = 5.5V = 5.0V = 4.5V = 4.0V = 3.5V 80°C 5 6 VDS (V) Input Voltage (V) DS9816-03 March 2007 www.richtek.com 7 RT9816 Power Down Reset Time-Out vs. Temperature Power Down Reset Time-Out (ms) 500 Output Voltage vs. Input Voltage 7 RT9816G-31 6 400 RT9816G-31 Output Voltage (V) -50 -25 0 25 50 75 100 125 5 4 3 2 1 300 200 100 0 0 0 1 2 3 4 5 6 Temperature (°C) Input Voltage (V) Power-Down Reset Time-Out vs. Temperature Power-Down Reset Time-Out (us) 30 25 20 RT9816G-31 VDROP = 200mV 15 10 5 0 -50 -25 0 25 50 75 100 125 VDROP = 150mV VDROP = 250mV Temperature (°C) www.richtek.com 8 DS9816-03 March 2007 RT9816 Application Information Multiple Supplies Mainly, the pull-up connected to the RT9816 will connect to the supply voltage that is being monitored at the IC’ s VCC pin. However, some systems may use the open-drain output to level-shift from the monitored supply to reset circuitry powered by some other supply. Benefits of Highly Accurate Reset Threshold Most μP supervisor ICs have reset threshold voltages between 1% and 1.5% below the value of nominal supply voltages. This ensures a reset will not occur within 1% of the nominal supply, but will occur when the supply is 1.5% below nominal. DS9816-03 March 2007 www.richtek.com 9 RT9816 Outline Dimension D e H L C B b b1 A e A1 Symbol A A1 B b b1 C D e H L Dimensions In Millimeters Min 0.800 0.000 1.150 0.150 0.350 1.800 1.800 1.300 0.080 0.200 0.260 0.460 Max 1.100 0.100 1.350 0.400 0.500 2.450 2.200 Dimensions In Inches Min 0.031 0.000 0.045 0.006 0.014 0.071 0.071 0.051 0.003 0.008 0.010 0.018 Max 0.043 0.004 0.053 0.016 0.020 0.096 0.087 SC-82 Surface Mount Package Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com www.richtek.com 10 DS9816-03 March 2007