ASSP Power Supply Applications Power Management Switch MB380

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ASSP Power Supply Applications Power Management Switch MB380

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DS04-27601-2E
ASSP Power Supply Applications
Power Management Switch
MB3802
DESCRIPTION
MB3802 power management switch incorporating switch circuits with extremely resistance. diode required because switch block configured with N-ch prevent reverse current switch OFF. MB3802 starts very voltage (typical 2.2V) stable resistance obtained irrespective switching voltage because internal DC/DC converter applies optimum voltage N-ch gate switch Moreover, load-side capacitor discharged switch OFF, power supply various power supply systems switched efficiently.
FEATURES
Extremely resistance: 0.12 (typical) 0.06 (typical parallel connection) Reverse current protection load side switch Operation start input voltage: 2.2V (typical) power consumption switch OFF: (input voltage) switch Load discharge function External control ON/OFF time Break-before-make operation
PACKAGE
Plastic
(FPT-16P-M04)
MB3802
ASSIGNMENT
(TOP VIEW)
GNDA DCGA SWINA SWINA SWINB SWINB DCGB GNDB MB3802 SWOUTB SWOUTB DLYB VINB VINA DLYA SWOUTA SWOUTA
(FPT-16P-M04)
DESCRIPTION (SCSI Interface)
symbol VINA VINB SWINA SWINB SWOUTA SWOUTB DCGA DCGB DLYA Description These pins switch High level level. They serve power-supply pins DC/DC converter generate switch gate voltage. Switch Input pins: common pins assigned SWINA SWINB. They serve power-supply pins switch-OFF circuit which starts 1.5V min. Switch output pins: common pins assigned SWOUTA SWOUTB. When DCGA DCGB High level, loaddischarge circuit starts discharge these pins. SWOUTA/SWOUTB-side discharge control pins: These pins used discharge from load-side capacitor switch OFF. Connect them when discharge required. Switch-ON/OFF control pins: ON/OFF time delayed connecting external capacitor. Both times delayed about three fold installing 500-pF capacitor between these pins GND. Leave these pins open when they used. generated when these pins open. keep these pins high impedance, take care mount device that current leaks (less than µA). Ground pins input threshold reference voltage load discharge: When switching circuits used, ground both pins.
DLYB GNDA GNDB
MB3802
BLOCK DIAGRAM EXTERNAL CONNECTIONS
Extemal capacitor Power supply
Switch-ON circuit DC/DC converter
Comp
Switch-OFF circuit Switch control Load Load discharge circuit
Note: MB3802 incorporates switch blocks shown above. However, common both blocks.
BLOCK DESCRIPTION
MB3802 one-way switching with SWIN SWOUT pins serving respectively input output. When exceeds 2.2V, Comp. starts driving DC/DC converter switch N-ch applies optimum voltage switch gate. DC/DC converter boosts voltage. When below 2.1V, Comp. stops DC/DC converter, starts switch-OFF circuit, discharges voltage from switch gate GND. switch-OFF circuit powered from SWIN consumes 0.4µA Since N-ch back gate connected GND, switch-OFF reverse current prevented irrespective High level state between SWIN SWOUT. Note, however, that turning on/off with less applied SWIN cause reverse current flow because switch-off circuit does work then. method compensating operation switch-off circuit, section "sAPPLICATIONS 7.Lowside Switch." load discharge circuit installed between SWOUT powered pin, discharges load-side capacitor switch OFF. When necessary discharge load, connect GND. pins connection external capacitor delay switch-ON/OFF time. surge current load side power-on controlling switch-ON time. switch-ON time depends boot time DC/DC converter. Consequently, when level high SWIN level low, switch-ON time small; when SWIN level high, switch-OFF time small.
MB3802
ABSOLUTE MAXIMUM RATING
Parameter Input Voltage Switching voltage Switching current Permissible loss Storage Temperature Symbol TSTG Condition switch switch switch-ON peak 75°C Ratings -0.3 -0.3 -0.3 +125 +25°C) Unit
WARNING: Semiconductor devices permanently damaged application stress (voltage, current, temperature, etc.) excess absolute maximum ratings. exceed these ratings.
RECOMMENDED OPERATING CONDITIONS
Parameter Input voltage Switching level Switching current Gate-pin connection capacitance Gate-pin mounting leak current Input voltage load discharge circuit Operating temperature Symbol VSWIN IDLY VDCG Conditions switch switch switch (for single switch) Ratings Min. -0.1 Typical Max. +7.5 Unit
WARNING: recommended operating conditions required order ensure normal operation semiconductor device. device's electrical characteristics warranted when device operated within these ranges. Always semiconductor devices within their recommended operating condition ranges. Operation outside these ranges adversely affect reliability could result device failure. warranty made with respect uses, operating conditions, combinations represented data sheet. Users considering application outside listed conditions advised contact their FUJITSU representatives beforehand.
MB3802
ELECTRICAL CHARACTERISTICS
Characteristics
+25°C) Parameter Symbol IIN1 Input current IIN2 RON1 Swiching resistance RON2 Switch-OFF leak current Input threshold voltage Input hysteresis width Switch resistance Switch charge resistance Input voltage switch charge circuit VTH1 VTH2 VHYS RDCG1 RDCG2 IDCG Condition 0.5A, VSWIN 0.5A, VSWIN VSWIN switch switch 0.5A -40° +75°C VSWOUT VDCG VSWOUT VDCG VDCG Ratings 1500 1000 Unit
Characteristics
+25°C) Parameter Switch-ON time Switch time Switch ON/OFF time Symbol tON1 tON2 tOFF1 tOFF2 tHYS1 tHYS2 Condition VSWIN VSWIN VSWIN VSWIN VSWIN VSWIN Ratings Unit
MB3802
CHARACTERISTIC TEST DIAGRAMS
Test Condition
Open
SWIN
SWOUT
Load current
Switch-ON/OFF Timing Chart
SWIN
SWOUT
Note: rise/fall times (10%/90%) both less than 1µs.
MB3802
APPLICATIONS
Separate Switching Circuits
DCGA VINA
SWINA SWOUTA SWINB
VINB
SWOUTB DCGB Load Load
Notes: power supplies andVSB used separated controlling voltages VINA VINB> Connect when used.
Switching Power Supplies
VINA
SWINA SWOUTA SWINB
VINB
SWOUTB Load
Note: When using different power supplies single load, control them connecting external capacitor that both switches same time.
MB3802
Switching Loads
DCGA VINA
SWINA SWOUTA SWINB
VINB
SWOUTB DCGB Load Load
Note: Make this connection control different loads separately single power supply.
Connecting Serial Switches
DCGA VINA
SWINA SWOUTA SWINB
VINB
SWOUTB DCGB Load Load
Note: Make this connection supply power from load load
MB3802
Connecting Parallel Switches
DLYA VINA SWINA SWOUTA SWINB VINB DLYB DCGB Load SWOUTB DCGA
Note: Connect circuits parallel produce resistance (RON 0.06). this case, connect DLYA DLYB pins common give synchronous ON/OFF between both switches.
Resistance
DCGA VINA
DLYA
SWINA SWOUTA SWINB
VINB DLYB
SWOUTB DCGB Load
DCGA VINA DLYA SWINA SWOUTA SWINB VINB DLYB SWOUTB DCGB
Notes: Make this connection produce resistance that much lower than above connection. Also, connect pins common. Consider difference between resistances switch-ON/OFF times between devices (MB3802) insure that load control offset device.
MB3802
Low-side Switch
VINA
SWINA SWOUTA SWINB SWOUTB DLYA DLYB
Load
VINB
Load
V,VS Switch-ON time Switch-OFF time
V,VS
Notes: Make this connection control switch ON/OFF lower load side. assist switch-OFF circuit operation driven SWIN power supply, connect high resistances pins without overloading DC/DC converter. this connection, switch-OFF time longer than switch-ON time.
MB3802
TYPICAL PERFORMANCE CHARACTERISTICS
Resistance (Input-voltage dependence)
VSWIN VSWIN VSWIN VSWIN VSWIN VSWIN VSWIN
Resistance (Load current dependence)
VSWIN V,VIN VSWIN V,VIN
resistance
Switch-ONTime (µs)
VSWIN V,VIN VSWIN V,VIN
Input voltage Resistance (Temperature dependence: SWIN
VSWIN
Load current
1.2.
Resistance (Temperature dependence: SWIN
VSWIN
resistance
resistance
(°C)
VVIN VVIN
(°C) Switch-ON time (Input voltage characteristic: SWIN
VSWIN
Switch-ON time (Input voltage characteristic: SWIN
VSWIN
Switch-ON time (µs)
Switch ONtime (µs)
-25°C +25°C
-25°C +25°C
+75°C
+75°C
Input voltage
Input voltage
(Continued)
MB3802
Switch-OFF Time (Input voltage characteristic: SWIN
VSWIN
Switch-OFF Time (Input voltage characteristic: SWIN
VSWIN
Switch-OFF time (µs)
-25°C +25°C
Switch-OFF time (µs)
+75°C
-25°C +25°C +75°C
Input voltage Switch-ON Time (DLY-pin connection capacitance: SWIN
VSWIN
Input voltage Switch-ON Time (DLY-pin connection capacitance: SWIN
VSWIN
ON-time (ms)
ON-time (ms)
1000
10000
1000
10000
Capacitance (pF) Switch-OFF Time (DLY-pin connection capacitance: SWIN
VSWIN
Capacitance (pF) Switch-OFF Time (DLY-pin connection capacitance: SWIN
VSWIN
10000
10000
OFF-time (ms)
OFF-time (ms)
1000
1000
1000
10000
1000
10000
Capacitance (pF)
Capacitance (pF)
(Continued)
MB3802
(Continued)
Discharge Resistance (DCG voltage dependence: SWIN
VSWIN
VSWIN
Discharge Resistance (DCG voltage dependence: SWIN
Discharge resistance
Discharge resistance
+75°C +25°C
+75°C +25°C
-25°C
-25°C
voltage
Output Leak Current switch OFF)
1000
voltage
Input Current (Input voltage dependence)
Leak current (nA)
Input current (µA)
+75°C +25°C -25°C
+75°C +25°C -25°C
SWIN voltage
Surge Current Output Voltage Boot (DLY-pin connection capacitance dependence)
Input voltage
Switch-On resistance (relationship between
Switch voltage
Open Output voltage 1000 Open Surge current 1000
Output Input (Surge current) Time
voltage
SWIN Load capacitance
mA/div. (surge current) V/div. (output voltage) µs/div. (time axis)
MB3802
PACKAGE DIMENSIONS
Plastic (FTP-16P-M04)
10.15 -0.20 .400 -.008
+0.25 +.010
2.10(.083)MAX
0(0)MIN (STAND OFF) INDEX 3.90±0.30 (.154±.012) 6.40±0.40 (.252±.016) 5.40 -0.20 +.016 .213 -.008
+0.40
1.27(.050)TYP
0.45±0.10 (.018±.004)
0.15 -0.02 +.002 .006 -.001 Details part
+0.05
0.50±0.20 (.020±.008)
0.20(.008)
0.10(.004) 8.89(.350)REF
0.50(.020) 0.18(.007)MAX 0.68(.027)MAX
1994 FUJITSU LIMITED F16012S-4C-4
Dimensions (inch)
MB3802
FUJITSU LIMITED
further information please contact:
Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-8588, Japan Tel: 81(44) 754-3763 Fax: 81(44) 754-3329
Rights Reserved. contents this document subject change without notice. Customers advised consult with FUJITSU sales representatives before ordering. information circuit diagrams this document presented examples semiconductor device applications, intended incorporated devices actual use. Also, FUJITSU unable assume responsibility infringement patent rights other rights third parties arising from this information circuit diagrams. FUJITSU semiconductor devices intended standard applications (computers, office automation other office equipment, industrial, communications, measurement equipment, personal household devices, etc.). CAUTION: Customers considering products special applications where failure abnormal operation directly affect human lives cause physical injury property damage, where extremely high levels reliability demanded (such aerospace systems, atomic energy controls, floor repeaters, vehicle operating controls, medical devices life support, etc.) requested consult with FUJITSU sales representatives before such use. company will responsible damages arising from such without prior approval. semiconductor devices have inherent chance failure. must protect against injury, damage loss from such failures incorporating safety design measures into your facility equipment such redundancy, fire protection, prevention over-current levels other abnormal operating conditions. products described this document represent goods technologies subject certain restrictions export under Foreign Exchange Foreign Trade Japan, prior authorization Japanese government will required export those products from Japan.
http://www.fujitsu.co.jp/
North South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street Jose, 95134-1804, Tel: (408) 922-9000 Fax: (408) 922-9179 Customer Response Center Mon. Fri.: (PST) Tel: (800) 866-8608 Fax: (408) 922-9179
http://www.fujitsumicro.com/
Europe FUJITSU MIKROELEKTRONIK GmbH Siebenstein 6-10 D-63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122
http://www.fujitsu-ede.com/
Asia Pacific FUJITSU MICROELECTRONICS ASIA #05-08, Lorong Chuan Tech Park Singapore 556741 Tel: (65) 281-0770 Fax: (65) 281-0220
http://www.fmap.com.sg/
F9902 FUJITSU LIMITED Printed Japan

ASSP Power Supply Applications Power Management Switch MB380

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