MB3802 Fujitsu, MB3802 Datasheet
MB3802
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MB3802 Summary of contents
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... Power Management Switch MB3802 DESCRIPTION The MB3802 is a power management switch incorporating two switch circuits with extremely low ON resistance. NO diode is required because the switch block is configured with an N-ch MOS to prevent reverse current at switch OFF. The MB3802 starts at a very low voltage (typical V of the switching voltage because the internal DC/DC converter applies the optimum voltage for the N-ch MOS gate at switch ON ...
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... DLY 1 GND 8 GND 2 (TOP VIEW MB3802 (FPT-16P-M04) These pins switch ON at High level and OFF at Low level. They serve as power-supply pins for the DC/DC converter to generate the switch gate voltage. Switch Input pins: Two common pins are assigned to SWIN A SWIN . They serve as power-supply pins for the switch-OFF circuit ...
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... Note : The MB3802 incorporates two switch blocks as shown above. However, GND is common to both blocks. BLOCK DESCRIPTION The MB3802 is a one-way switching IC with the SWIN and SWOUT pins serving respectively for input and output. When V exceeds 2.2 V, the Comp. starts driving the DC/DC converter to switch the N-ch MOS and applies the IN optimum voltage for the switch gate ...
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... MB3802 ABSOLUTE MAXIMUM RATING Parameter Symbol Input Voltage Switching voltage Switching current Permissible loss Storage Temperature WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. RECOMMENDED OPERATING CONDITIONS Parameter Input voltage ...
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... SWIN ON2 IN SWIN OFF1 IN SWIN OFF2 IN SWIN HYS1 IN SWIN HYS2 IN SWIN MB3802 (Ta = +25 C) Value Unit Min Typ Max — 0 — A — 100 200 A — 230 460 A — 120 160 m — 130 175 m — 0.5 2.0 A 2.0 2.2 2.4 V 1.9 2.1 2.3 V ...
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... MB3802 AC CHARACTERISTIC TEST DIAGRAMS 1. Test Condition 2. Switch-ON/OFF Timing Chart OUT 0V SW OUT Note : The rise/fall times (10%/90 Open DLY VIN SWIN 1A SWOUT V S GND DCG Load current 90% 90% 50% 50% 90 are both less than OFF ...
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... Note : When using different power supplies for a single load, control them by connecting an external capacitor so that both switches are not ON at the same time. DCG A SWIN A SWOUT A SWIN B SWOUT DCG Load B andV can be used separated by controlling the voltages VIN SA SB SWIN A SWOUT A SWIN B SWOUT Load MB3802 Load A and VIN . ...
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... MB3802 3. Switching Two Loads VIN A VIN B Note : Make this connection to control two different loads separately for a single power supply. 4. Connecting Serial Switches VIN A VIN B Note : Make this connection to supply power from V 8 DCG A SWIN A SWOUT A SWIN B SWOUT B GND DCG B Load B DCG ...
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... Make this connection to produce an ON resistance that is much lower than the above connection. Also, connect the DLY pins in common. Consider the difference between the ON resistances and the switch-ON/OFF times between two devices (MB3802) and insure that load control is not offset at one device. DCG A ...
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... MB3802 7. Low-side Switch VIN A VIN V IN Switch-ON time Switch-OFF time R and Notes : Make this connection to control the switch ON/OFF at the lower load side. To assist the switch-OFF circuit operation driven by the SW resistances (R and this connection, the switch-OFF time is longer than the switch-ON time. ...
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... 150 SWIN 100 50 – (Input voltage characteristic: SW 500 SWIN 400 300 200 Ta = +25 C 100 5.5 6.0 3.0 3.5 MB3802 = V SWIN V SWIN IN 0.4 0.6 0.8 1.0 1.2. Load current (A) ON Resistance = VIN VIN °C Switch-ON time = ...
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... MB3802 Switch-OFF Time (Input voltage characteristic: SW 100 3.0 3.5 4.0 4.5 Input voltage (V) Switch-ON Time (DLY-pin connection capacitance: SW 100 10 1 0.1 100 1000 Capacitance (pF) Switch-OFF Time (DLY-pin connection capacitance: SW 10000 1000 100 10 100 1000 Capacitance (pF (Input voltage characteristic 100 SWIN –25° +25° ...
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... Input Current (Input voltage dependence) 300 200 Ta = +75° +25°C 100 1 (relationship between V 6 140 m 5 Open 4 510 pF Output voltage 1000 2.5 MB3802 = SWIN +75° +25° –25° DCG voltage ( –25°C 2.0 3.0 4.0 5.0 Input voltage (V) Switch-On resistance and 130 m 120 m 115 m ...
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... The work table, tools and measuring instruments must be grounded. - The worker must put on a grounding device containing 250 k • Do not apply a negative voltage - Applying a negative voltage of 0 less to an LSI may generate a parasitic transistor, resulting in malfunction. ORDERING INFORMATION Part number MB3802PF-G-BND resistors in series. Package 16-pin plastic SOP (FPT-16P-M04) Remarks ...
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... M (.018±.004) Details of "A" part "A" Dimensions in mm (inches) . Note : The values in parentheses are reference values. MB3802 2.10(.083)MAX (Mounting height) 0(0)MIN (STAND OFF) +0.40 5.40 –0.20 +.016 .213 –.008 +0 ...
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... MB3802 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 ...