LTC2930 Linear Technology, LTC2930 Datasheet
LTC2930
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LTC2930 Summary of contents
Page 1
... The RST output is guaranteed the correct state for V and may be externally pulled external voltage. The 52μA supply current makes the LTC2930 ideal for power conscious systems and it may be confi gured to monitor fewer than six inputs. ...
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... Reference Load Current (I ) ..............................±1mA VREF V4 Input Current (–ADJ Mode) ..............................–1mA RST Current .........................................................±10mA Operating Temperature Range LTC2930C ................................................ 0°C to 70°C LTC2930I.............................................. –40°C to 85°C LTC2930H .......................................... –40°C to 125°C Storage Temperature Range ................... –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH ...
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... Note 5: The output pin RST has a diode protected internal pull- typically 6μA. However, an external pull-up resistor may be used when faster rise times are required or for Monitor Timing n t RST t UV LTC2930 MIN TYP MAX ● ● 0.8 2 ● 0.52 1.2 ● ...
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... LTC2930 TYPICAL PERFORMANCE CHARACTERISTICS Normalized Threshold Voltages vs Temperature 1.015 1.010 1.005 1.000 0.995 0.990 0.985 –50 – 100 TEMPERATURE (°C) Supply Current vs Temperature www.DataSheet4U.com 40 –50 – 100 TEMPERATURE (°C) Transient Duration vs Comparator ...
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... V2. Pulls low when any voltage input is below the reset threshold and held low for the confi gured delay time after all voltage inputs are above threshold. Use an external pull-up to pull greater than V2. Leave open if unused. LTC2930 I vs Supply Voltage (RST) SINK 25° ...
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... LTC2930 PIN FUNCTIONS MR (Pin 6): Manual Reset Input. A logic low on this pin pulls RST low. When the MR pin returns high, RST returns high after the confi gured reset timeout if all six voltage inputs are above threshold. A weak internal pull-up allows the pin to be left open for normal monitor operation. ...
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... APPLICATIONS INFORMATION Supply Monitoring The LTC2930 is a low power, high accuracy confi gurable six supply monitoring circuit with a common reset output. An external capacitor sets the reset timeout period. An external resistive divider between VREF , VPG and GND selects possible input voltage monitor combinations. All six volt- age inputs must be above their predetermined thresholds for the reset not to be activated ...
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... VPG GND Figure 2. Mode Selection Monitor Confi guration Select the LTC2930 input voltage combination by placing the recommended resistive divider from VREF to GND and connecting the tap point to VPG, as shown in Figure 2. Table 1 offers recommended 1% resistor values for each of the 16 modes. The last column in Table 1 specifi es ...
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... A low leakage ceramic capacitor is recommended. OR-ed System Reset In Figure 5, two LTC2930s are confi gured to monitor 11 supply voltages simultaneously. The unused adjustable input pin is tied to the V1 input. The open-drain RST outputs are OR-tied and pulled through a 10kΩ ...
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... R2A 86.6k 1% 12V (9.6V THRESHOLD) LTM4600 OUT RUN EN LTC2950-1 INT KILL www.DataSheet4U.com 1500k 1% 100k 0.1μF 1% Figure 6. Using a Pushbutton On/Off Controller with the LTC2930 10 10k 5V 3V 12V RST 0.1μF V4 LTC2930 VREF 10k** VPG GND CRT MANUAL RESET C RT ...
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... Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1725 Rev A) 0.70 0.05 2.38 0.05 1.65 0.05 PACKAGE OUTLINE 0.45 BSC 2.25 REF 3.00 0.10 (4 SIDES) 0.75 0.05 0.00 – 0.05 MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE TOP AND BOTTOM OF PACKAGE LTC2930 R = 0.115 0.40 0.10 TYP 7 12 2.38 0.10 1.65 0.10 PIN 1 NOTCH R = 0.20 OR 0.25 45 CHAMFER 6 1 0.23 0.05 0.45 BSC 2 ...
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... Confi gurable Six Supply Monitor with Individual Comparator Outputs 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● Five Supply Monitor, 5% Threshold (3.3V, 1.5V, 1.2V, 1V, 0.9V) 68.1k 86.6k 124k LTC2930 V5 V6 VREF R1 100k 100k 100k VPG 71. 28k 1% www.linear.com ● ...