MB3793-30APNF-E1 FUJITSU [Fujitsu Component Limited.], MB3793-30APNF-E1 Datasheet
MB3793-30APNF-E1
Related parts for MB3793-30APNF-E1
MB3793-30APNF-E1 Summary of contents
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... DESCRIPTION The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems ...
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... MB3793 -30A PIN ASSIGNMENTS PIN DESCRIPTION Pin no. Symbol Descriptions 1 RESET Outputs reset pin Watchdog timer monitor time 2 CTW setting pin Power-on reset hold time set- 3 CTP ting pin 4 GND Ground pin 2 (TOP VIEW RESET 2 7 CTW 3 6 CTP 4 5 GND ...
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... RESET Output circuit INH 6 CTW 2 Watchdog timer Pulse generator 1 CK1 8 Pulse generator 2 7 CK2 . . = 3 µ µ Logic circuit Comp.S Reference voltage generator . REF To GND of all blocks MB3793 -30A 360 kΩ − 240 kΩ 4 GND 3 ...
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... Comp comparator with hysteresis to compare the reference voltage with a voltage (V of dividing the power voltage (V This function enables the MB3793 to detect an abnormality when the power is cut or falls abruptly. 2. Output circuit The output circuit contains a RESET output control comparator that compares the voltage at the CTP pin to the threshold voltage to release the RESET output if the CTP pin voltage exceeds the threshold value ...
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... P D ⎯ −55 Tstg Symbol Conditions Min ⎯ V 1.2 CC ⎯ ⎯ − ⎯ C 0.001 TP ⎯ C 0.001 TW ⎯ −40 Ta MB3793 -30A Rating Unit Max + 0 ≤ + ≤ +7) +10 mA 200 mW +125 °C Value Unit Typ Max 3.3 6 — ...
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... MB3793 -30A ELECTRICAL CHARACTERISTICS 1. DC Characteristics Parameter Symbol Power supply current Detection voltage Detection voltage hysteresis V difference V Clock-input threshold voltage V Clock-input hysteresis V Inhibition-input voltage Input current (CK1, CK2, INH) V Reset output voltage Reset-output minimum power V voltage * : The values enclosed in parentheses ( ) are setting assurance values. ...
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... DIAGRAM 1. Basic operation (Positive clock pulse CK1 t CKT CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) (3) t CKW (4)(5) (5) (6) (7) (8) (9) (10) MB3793 -30A (11) (12) (13) 7 ...
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... MB3793 -30A 2. Basic operation (Negative clock pulse CK1 t CKT CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) (3) (4)(5) ( CKW (6) (7) (8) (9) (10) (11) (12) (13) ...
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... CTP V H CTW V L RESET Note : The MB3793 can monitor only one clock. The MB3793 checks the clock signal at every other input pulse. Therefore, set watchdog timer monitor time t to monitor the period twice as long as the input clock pulse. t CKW t CKT t ...
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... MB3793 -30A 4. Inhibition operation (Positive clock pulse CK1 CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) ( CKW t CKT (4)(5) (5) (6) (7) (11) (8) (9) (10) (12) (13) ...
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... V H CTW V L Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately. When a CK2 pulse is detected after detecting a CK1 pulse, the monitoring time setting capacity (C ) switches to charging from discharging. TW When two consecutive pulses occur on one side of this alternation before switching, the second pulse is ignored ...
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... Clock monitoring To use the MB3793 while monitoring only one clock, connect clock pins CK1 and CK2. Although the MB3793 operates basically in the same way as when monitoring two clocks, it monitors the clock signal at every other input pulse. Refer to “3. Single-clock input monitoring (positive clock pulse)” under “ DIAGRAM.” ...
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... (µ The value with V The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses clock pulse is input, the MB3793 repeats operations (6) and (7). ( lowered to the fall-time detected voltage (V CC MB3793 outputs a reset signal (setting the RESET pin to “L” level from “H” level). ...
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... MB3793 -30A TYPICAL CHARACTERISTICS Power supply current vs. Power supply voltage 50 Watchdog timer monitoring INH Watchdog timer stopping INH Power supply voltage V Reset output voltage vs. Reset output current (P-MOS side) 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 − − − ...
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... Operating ambient temperature Ta ( °C) (V) Watchdog timer monitoring time vs. Operating ambient temperature +120 −40 −20 Operating ambient temperature Ta ( °C) MB3793 -30A rising 3 +20 +40 +60 +80 +100 +120 = 3 +20 +40 +60 +80 +100 +120 (Continued) 15 ...
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... MB3793 -30A (Continued) Power-on reset hold time vs. C capacitance −40 ° +25 ° +85 °C 1 −1 10 −4 −3 −2 − Power-on reset hold time setting capacitance C Watchdog timer monitoring time vs. C capacitance −40 °C ...
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... Supply voltage monitor and watchdog timer (1-clock monitor GND * : Use a capacitor with less leakage current. The MB3793 monitors the clock (CK1, CK2) at every other input pulse. (2) Supply voltage monitor and watching timer (2-clock monitor CTW ...
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... MB3793 -30A 2. Supply voltage monitor and watchdog timer stop INH MB3793 2 CTW GND 3 CTP GND * : Use a capacitor with less leakage current. NOTES ON USE • Take account of common impedance when designing the earth line on a printed wiring board. ...
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... E1 8-pin Plastic SOP MB3793-30APNF- E1 8-pin Plastic SOP MB3793-30APFV- E1 8-pin Plastic SSOP RoHS Compliance Information of Lead (Pb) Free version The LSI products of Fujitsu with “E1” are compliant with RoHS Directive , and has observed the standard of lead, cadmium, mercury, Hexavalent chromium, polybrominated biphenyls (PBB) , and polybrominated diphenyl ethers (PBDE) . The product that conforms to this standard is added “ ...
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... MB3793 -30A MARKING FORMAT (Lead Free version) Lead Free version INDEX Lead Free version Lead Free version 20 3793AN E1XXXX XXX 3793AN XXXX E1 XXX 93AN 1 XXX XXX INDEX SOP-8 (FPT-8P-M01) SOP-8 (FPT-8P-M02) SSOP-8 (FPT-8P-M03) ...
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... LABELING SAMPLE (Lead free version) MB123456P - 789 - GE1 (3N) 1MB123456P-789-GE1 (3N)2 1561190005 107210 1,000 MB123456P - 789 - GE1 2006/03/01 MB123456P - 789 - GE1 1561190005 lead-free mark JEITA logo JEDEC logo G Pb 1000 QC PASS PCS ASSEMBLED IN JAPAN 0605 - Z01A 1000 1/1 Lead Free version MB3793 -30A 21 ...
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... Cooling Note : Temperature : the top of the package body (2) Manual soldering (partial heating method) Conditions : Temperature 400 °C MAX Times : 5 s max/pin 22 E1, MB3793-30APFV- Condition IR (infrared reflow) , Manual soldering (partial heating method) 2 times Before opening From opening to the 2nd reflow When the storage period after opening was exceeded 5 ° ...
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... Note 4) Pins width do not include tie bar cutting remainder. +0.03 0.17 –0.04 +.001 .007 –.002 5.30±0.30 7.80±0.40 Details of "A" part "A" 0.13(.005) M Dimensions in mm (inches). Note: The values in parentheses are reference values. MB3793 -30A 1.27 mm 5.3 × 6.35 mm Gullwing Plastic mold 2.25 mm MAX 0.10 g P-SOP8-5.3×6.35-1.27 +0.25 2.00 –0.15 (Mounting height) +.010 .079 – ...
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... MB3793 -30A 8-pin plastic SOP (FPT-8P-M02) 8-pin plastic SOP (FPT-8P-M02) +0.25 +.010 * 1 5.05 .199 –0.20 –.008 8 1 1.27(.050) 0.10(.004) 0.10(.004) 2002 FUJITSU LIMITED F08004S-c-4 Lead pitch Package width × package length Lead shape Sealing method Mounting height Weight Note These dimensions include resin protrusion. ...
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... M 0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006) Dimensions in mm (inches). Note: The values in parentheses are reference values. MB3793 -30A 0.80 mm 4.2 × 3.5 mm Gullwing Plastic mold 1.45 mm MAX 0.04 g P-SSOP8-4.2×3.5-0.80 (Mounting height) 0.25(.010) 0.10±0.10 (.004±.004) ...
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... MB3793 -30A FUJITSU LIMITED All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device ...