Fujitsu MB3771PF Power supply monitor Datasheet

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27400-11E
ASSP For power supply applications
BIPOLAR
Power Supply Monitor
MB3771
■ DESCRIPTION
The Fujitsu MB3771 is designed to monitor the voltage level of one or two power supplies (+5 V and an arbitrary
voltage) in a microprocessor circuit, memory board in large-size computer, for example.
If the circuit’s power supply deviates more than a specified amount, then the MB3771 generates a reset signal to
the microprocessor. Thus, the computer data is protected from accidental erasure.
Using the MB3771 requires few external components. To monitor only a +5 V supply, the MB3771 requires the
connection of one external capacitor. The level of an arbitrary detection voltage is determined by two external
resistors. The MB3771 is available in an 8-pin Dual In-Line, Single In-Line Package or space saving Flat Package.
■ FEATURES
•
•
•
•
•
•
•
•
•
•
Precision voltage detection (VSA = 4.2 V ± 2.5 %)
User selectable threshold level with hysteresis (VSB = 1.23 V ± 1.5 %)
Monitors the voltage of one or two power supplies (5 V and an arbitrary voltage, >1.23 V)
Usable as over voltage detector
Low voltage output for reset signal (VCC = 0.8 V Typ)
Minimal number of external components (one capacitor Min)
Low power dissipation (ICC = 0.35 mA Typ, VCC = 5 V)
Detection threshold voltage has hysteresis function
Reference voltage is connectable.
One type of package (SOP-8pin : 1 type)
■ APPLICATION
• Industrial Equipment
• Arcade Amusement
etc.
Copyright©2003-2006 FUJITSU LIMITED All rights reserved
MB3771
■ PIN ASSIGNMENT
(TOP VIEW)
CT
1
8
RESET
VSC
2
7
VSA
OUTC
3
6
VSB /RESIN
GND
4
5
VCC
(FPT-8P-M01)
■ BLOCK DIAGRAM
VCC
5
≅ 1.24 V
≅ 100 kΩ
+
+
− Comp. A
VSA 7
VSB / RESIN 6
− Comp. B
≅ 12 µA
−
≅ 40 kΩ
+
≅ 1.24 V
REFERENCE VOLTAGE
−
≅ 10 µA
−
+
2
VSC
4
GND
+
Comp. C
R
Q
S
1
CT
2
8
3
RESET OUTC
MB3771
■ FUNCTIONAL DESCRIPTIONS
Comparators Comp.A and Comp.B apply a hysteresis to the detected voltage, so that when the voltage at either
the VSA or VSB pin falls below 1.23 V the RESET output signal goes to “low” level.
Comp. B may be used to detect any given voltage(APPLICATION CIRCUIT 3 : Arbitrary Voltage Supply Monitor),
and can also be used as a forced reset pin (with reset hold time) with TTL input (APPLICATION CIRCUIT 6 :
5V Power Supply Monitor with forced RESET input (VCC = 5 V) ).
Note that if Comp.B is not used, the VSB pin should be connected to the VCC pin (APPLICATION CIRCUIT 1 : 5V
Power Supply Monitor).
Instantaneous breaks or drops in the power supply can be detected as abnormal conditions by the MB3771
within a 2 µs interval. However because momentary breaks or drops of this duration do not cause problems in
actual systems in some cases, a delayed trigger function can be created by connecting capacitors to the VSA or
VSB pin (APPLICATION CIRCUIT 8 : Supply Voltage Monitoring with Delayed Trigger).
Because the RESET output has built-in pull-up resistance, there is no need to connect to external pull-up
resistance when connected to a high impedance load such as a CMOS logic IC.
Comparator Comp. C is an open-collector output comparator without hysteresis, in which the polarity of input/
output characteristics is reversed. Thus Comp. C is useful for over-voltage detection (APPLICATION CIRCUIT
11 : Low Voltage and Over Voltage Detection (VCC = 5 V) ) and positive logic RESET signal output (APPLICATION
CIRCUIT 7 : 5 V Power Supply Monitor with Non-inverted RESET), as well as for creating a reference voltage
(APPLICATION CIRCUIT 10 : Reference Voltage Generation and Voltage Sagging Detection).
Note that if Comp. C is not used, the VSC pin should be connected to the GND pin (APPLICATION CIRCUIT 1 :
5V Power Supply Monitor).
■ FUNCTION EXPLANATION
VHYS
VS
VCC
0.8 V
VCC
CT
1
2
3
4
8
7
6
5
t
RESET
TPO
RESET
TPO
t
(1)
(2)
(3)
(4) (5) (6)
(7)
(8)
(1) When VCC rises to about 0.8V, RESET goes low.
(2) When VCC reaches VS +VHYS, CT then begins charging. RESET remains low during this time
(3) RESET goes high when CT begins charging.
TPO =: CT × 10 5 (Refer to “CT pin capacitance vs. reset hold time” in “TYPICAL CHARACTERISTICS”.)
(4) When VCC level drops lower then VS, then RESET goes low and CT starts discharging.
(5) When VCC level reaches VS + VHYS, then CT starts charging.
In the case of voltage sagging, if the period from the time VCC goes lower than or equal to VS to the time VCC
reaches VS +VHYS again, is longer than tPI, (as specified in the AC Characteristics), CT is discharged and
charged successively.
(6) After TPO passes, and VCC level exceeds VS + VHYS, then RESET goes high.
(7) Same as Point 4.
(8) RESET remains low until VCC drops below 0.8V.
3
MB3771
■ ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Symbol
Power supply voltage
Input voltage
Power dissipation
Storage temperature
Unit
Min
Max
VCC
−0.3
+20
V
VSA
−0.3
VCC + 0.3 ( < +20)
V
VSB
−0.3
+20
V
VSC
−0.3
+20
V
PD
⎯
200 (Ta ≤ 85 °C)
mW
Tstg
−55
+125
°C
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
Power supply voltage
Output current
Operating ambient temperature
Symbol
Value
Unit
Min
Max
VCC
3.5
18
V
IRESET
0
20
mA
IOUTC
0
6
mA
Ta
−40
+85
°C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of the
semiconductor device. All of the device’s electrical characteristics are warranted when the device is
operated within these ranges.
Always use semiconductor devices within their recommended operating condition ranges. Operation
outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representatives beforehand.
4
MB3771
■ ELECTRICAL CHARACTERISTICS
1. DC Characteristics
(VCC = 5 V, Ta = + 25 °C)
Parameter
Power supply current
Symbol
Min
Typ
Max
Unit
VSB = 5 V, VSC = 0 V
⎯
350
500
µA
ICC2
VSB = 0 V, VSC = 0 V
⎯
400
600
µA
VCC
4.10
4.20
4.30
V
Ta = −40 °C to +85 °C
4.05
4.20
4.35
V
VCC
4.20
4.30
4.40
V
Ta = −40 °C to +85 °C
4.15
4.30
4.45
V
50
100
150
mV
VSB
1.212
1.230
1.248
V
Ta = −40 °C to +85 °C
1.200
1.230
1.260
V
⎯
3
10
mV
14
28
42
mV
Detection voltage
VSAH (UP)
Hysteresis width
VHYSA
Detection voltage
VSB
Deviation of detection voltage
∆VSB
Hysteresis width
VHYSB
⎯
VCC = 3.5 V to 18 V
⎯
IIHB
VSB = 5 V
⎯
0
250
nA
IILB
VSB = 0 V
⎯
20
250
nA
IRESET = −5 µA, VSB = 5 V
4.5
4.9
⎯
V
IRESET = 3mA, VSB = 0 V
⎯
0.28
0.4
V
IRESET = 10mA, VSB = 0 V
⎯
0.38
0.5
V
VOHR
Output voltage
Value
ICC1
VSAL
(DOWN)
Input current
Conditions
VOLR
Output sink current
IRESET
VOLR = 1.0 V, VSB = 0 V
20
40
⎯
mA
CT charge current
ICT
VSB = 5 V, VCT = 0.5 V
9
12
16
µA
IIHC
VSC = 5 V
⎯
0
500
nA
IILC
VSC = 0 V
⎯
50
500
nA
1.225
1.245
1.265
V
1.205
1.245
1.285
V
Input current
Detection voltage
VSC
⎯
Ta = −40 °C to +85 °C
Deviation of detection voltage
∆VSC
VCC = 3.5 V to 18 V
⎯
3
10
mV
Output leakage current
IOHC
VOHC = 18 V
⎯
0
1
µA
Output voltage
VOLC
IOUTC = 4 mA, VSC = 5 V
⎯
0.15
0.4
V
Output sink current
IOUTC
VOLC = 1.0 V, VSC = 5 V
6
15
⎯
mA
Reset operation minimum
supply voltage
VCCL
VOLR = 0.4 V, IRESET = 200 µA
⎯
0.8
1.2
V
5
MB3771
2. AC Characteristics
Symbol
Conditions
VSA, VSB input pulse width
tPI
⎯
5.0
⎯
⎯
µs
Reset hold time
tPO
⎯
0.5
1.0
1.5
ms
RESET rise time
tr
⎯
1.0
1.5
µs
RESET fall time
tf
⎯
0.1
0.5
µs
⎯
2
10
µs
⎯
0.5
⎯
µs
⎯
1.0
⎯
µs
Parameter
RL = 2.2 kΩ,
CL = 100 pF
⎯
PD 1
t *
Propagation delay time
tPHL*2
tPLH*2
*1: In case of VSB termination.
*2: In case of VSC termination.
6
(VCC = 5 V, Ta = + 25 °C, CT = 0.01 µF)
Value
Unit
Min
Typ
Max
RL = 2.2 kΩ,
CL = 100 pF
MB3771
■ APPLICATION CIRCUIT
1. 5V Power Supply Monitor
Monitored by VSA. Detection threshold voltage is VSAL and VSAH
VCC
MB3771
CT
1
8
2
3
4
7
6
5
RESET
Logic
circuit
2. 5V Power Supply Voltage Monitor (Externally Fine-Tuned Type)
The VSA detection voltage can be adjusted externally.
Resistance R1 and R2 are set sufficiently lower than the IC internal partial voltage resistance, so that the detection
voltage can be set using the ratio between resistance R1 and R2. (Refer to the table below).
• R1, R2 calculation formula (when R1 << 100 kΩ, R2 <<40 kΩ)
VSAL =: (R1 + R2 ) × VSB /R2 [V], VSAH =: (R1 + R2 ) × (VSB + VHYSB) / R2 [V]
R1 (kΩ)
R2 (kΩ)
Detection voltage : VSAL (V) Detection voltage : VSAH (V)
10
3.9
4.37
4.47
9.1
3.9
4.11
4.20
VCC
MB3771
CT
1
2
3
4
8
7
6
5
RESET
R1
R2
Logic
Circuit
7
MB3771
3. Arbitrary Voltage Supply Monitor
(1) Case: VCC ≤ 18 V
• Detection Voltage can be set by R1 and R2.
Detection Voltage = (R1 + R2) × VSB/R2
• Connect Pin 7 to VCC when VCC less than 4.45 V.
• Pin 7 can be opened when VCC greater than 4.45 V
Power Dissipation can be reduced.
Note : Hysteresis of 28 mV at VSB at termination is available.
Hysteresis width dose not depend on (R1 + R2).
VCC
MB3771
1
2
3
4
CT
8
7
6
5
RESET
R1
R2
(2) Monitoring VCC > 18 V
• Detection Voltage can be set by R1 and R2
Detection Voltage = (R1 + R2) × VSB/R2
• The RESET signal output is =: 0V (low level) and =: 5 V (high level). VCC voltage cannot be output.
Do not pull up RESET to VCC.
• Changing the resistance ratio between R4 and R5 changes the constant voltage output, thereby changing the
voltage of the high level RESET output. Note that the constant voltage output should not exceed 18 V.
• The 5 V output can be used as a power supply for control circuits with low current consumption.
• In setting the R3 resistance level, caution should be given to the power consumption in the resistor. The table
below lists sample resistance values for reference (using 1/4 Ω resistance).
VCC (V)
Detection
voltage (V)
RESET Output min.
power supply voltage (V)
R1 (MΩ)
R2 (kΩ)
R3 (kΩ)
140
100
6.7
1.6
20
110
< 0.2
100
81
3.8
1.3
20
56
< 0.5
40
33
1.4
0.51
20
11
< 1.6
Output Current
(mA)
• Values are actual measured values (using IOUTC = 100 µA, VOLC = 0.4 V). Lowering the resistance value of R3
reduces the minimum supply voltage of the RESET output, but requires resistance with higher allowable loss.
VCC
R3
5 V output(Stablized)
CT
R4:
100 kΩ
R5:
33 kΩ
8
0.47 µF
1
8
2
7
3
6
4
5
RESET
R1
R2
MB3771
4. 5 V and 12 V Power Supply Monitor (2 types of power supply monitor VCC1 = 5 V, VCC2 =12 V)
• 5 V is monitored by VSA. Detection voltage is about 4.2 V
• 12 V is monitored by VSB. When R1 = 390 kΩ and R2 = 62 kΩ, Detection voltage is about 9.0 V.Generally the
detection voltage is determined by the following equation.
Detection Voltage = (R1 + R2) × VSB/R2
VCC2
VCC1
MB3771
CT
1
2
3
4
8
7
6
5
RESET
R1: 390 kΩ
Logic
circuit
R2: 62 kΩ
5. 5 V and 12 V Power Supply Monitor (RESET signal is generated by 5 V, VCC1 = 5 V, VCC2 = 12 V)
• 5 V is monitored by VSA, and generates RESET signal when VSA detects voltage sagging.
• 12 V is monitored by VSC, and generates its detection signal at OUTC.
• The detection voltage of 12 V monitoring and its hysteresis is determined by the following equations.
R1 + R2 + R3
Detection voltage =
× VSC
(8.95 V in the circuit above)
R2 + R3
Hysteresis width =
R1 (R3 − R3 // R4)
(R2 + R3) (R2 + R3 // R4)
× VSC
(200 mV in the circuit above)
VCC2
VCC1
R L: 10 kΩ
MB3771
R5: 100 kΩ
R1: 390 kΩ
1
2
3
4
R2: 33 kΩ
R4: 510 kΩ
8
7
6
5
RESET
IRQ
or
Port Logic Circuit
CT
R3: 30 kΩ
9
MB3771
6. 5 V Power Supply Monitor with forced RESET input (VCC = 5 V)
RESIN is an TTL compatible input.
RESIN
VCC
MB3771
CT
1
8
2
7
3
4
6
5
RESET
Logic Circuit
7. 5 V Power Supply Monitor with Non-inverted RESET
In this case, Comparator C is used to invert RESET signal. OUTC is an open-collector output.
RL is used an a pull-up resistor.
VCC
MB3771
RL: 10 kΩ
1
2
3
4
CT
RESET
8
7
6
5
8. Supply Voltage Monitoring with Delayed Trigger
When the voltage shown in the diagram below is applied at VCC, the minimum value of the input pulse width is
increased to 40 µs (when C1 = 1000 pF).
The formula for calculating the minimum value of the input pulse width [TPI] is:
TPI [µs] =: 4 × 10-2 × C1 [pF]
TP
VCC
5V
MB3771
4V
CT
10
1
2
3
4
8
7
6
5
RESET
C1
MB3771
9. Dual (Positive/Negative) Power Supply Voltage Monitoring (VCC = 5 V, VEE = Negative Power
Supply)
Monitors a 5 V and a negative (any given level) power supply. R1, R2, and R3 should be the same value.
Detection Voltage = VSB − VSB × R4/R3
Example if VEE = −5 V, R4 = 91 kΩ
Then the detected voltage = −4.37 V
In cases where VEE may be output when VCC is not output, it is necessary to use a Schottky barrier diode (SBD).
VCC
MB3771
R5 : 5.1 kΩ
R4
VEE
R3 :
20 kΩ
0.22 µF
CT
SBD
1
8
2
7
3
6
4
5
RESET
R1 : 20 kΩ
R2 : 20 kΩ
10. Reference Voltage Generation and Voltage Sagging Detection
(1) 9V Reference Voltage Generation and 5V/9V Monitoring
Detection Voltage = 7.2 V
In the above examples, the output voltage and the detection voltage are determined by the following equations:
Detection Voltage = (R1 + R2) × VSB/R2
15 V
R 5 : 3 kΩ
V CC : 5 V
MB3771
CT
0.47 µF
1
2
3
4
8
7
6
5
RESET
R3 :
7.5 kΩ
R4 :
1.2 kΩ
9 V (≅ 50 mA)
R 1: 300 kΩ
R 2: 62 kΩ
11
MB3771
(2) 5 V Reference Voltage Generation and 5V Monitoring (No.1)
Detection Voltage = 4.2 V
In the above examples, the output voltage and the detection voltage are determined by the following equations:
Output Voltage = (R3 + R4) × VSC/R4
15 V
R5 : 3 kΩ
MB3771
CT
0.47 µF
8
7
6
5
1
2
3
4
RESET
5 V(≅ 50 mA)
R3 : 3.6 kΩ
R4 : 1.2 kΩ
(3) 5 V Reference Voltage Generation and 5 V Monitoring (No. 2)
The value of R1 should be calculated from the current consumption of the MB3771, the current flowing at R2 and
R3, and the 5 V output current. The table below provides sample resistance values for reference.
VCC (V)
R1 (kΩ)
Output Current (mA)
40
11
< 1.6
24
6.2
< 1.4
15
4.7
< 0.6
VCC
R1
CT
1
8
2
7
3
4
6
5
RESET
5V
R2 :
100 kΩ
0.47 µF
R3 : 33 kΩ
GND
(4) 1.245 V Reference Voltage Generation and 5 V Monitoring
Resistor R1 determines Reference current. Using 1.2 kΩ as R1, reference current is about 2 mA.
VCC
(5 V)
R1 : 10 kΩ
CT
0.47 µF
GND
12
1
8
2
7
3
4
6
5
RESET
Reference Voltage
1.245 V Typ
MB3771
11. Low Voltage and Over Voltage Detection (VCC = 5 V)
VSH has no hysteresis. When over voltage is detected, RESET is held in the constant time as well as when
low voltage is detected.
VSL = (R1 + R2) × VSB/R2
VSH = (R3 + R4) × VSC/R4
VCC
R3
R1
MB3771
RESET
R4
1
2
3
4
CT
8
7
6
5
RESET
R2
VSL
VSH
VCC
12. Detection of Abnormal State of Power Supply System (VCC = 5 V)
• This Example circuit detects abnormal low/over voltage of power supply voltage and is indicated by LED
indicator. LED is reset by the CLEAR key.
• The detection levels of low/over voltages are determined by VSA, and R1 and R2 respectively.
VCC
LED
R1
MB3771
R2
1
2
3
4
8
7
6
5
R3: 620 Ω
CLEAR
R 4:
1 kΩ to 100 kΩ
13
MB3771
13. Back-up Power Supply System (VCC = 5 V)
•
•
•
•
Use CMOS Logic and connect VDD of CMOS logic with VCCO.
The back-up battery works after CS goes high as V2 < V1.
During tPO, memory access is prohibited.
CS‘s threshold voltage V1 is determined by the following equation:
V1 = VF + (R1 + R2 + R3) × VSB/R3
When V1 is 4.45 V or less, connect 7 pin with VCC.
When V1 is 4.45 V or more, 7 pin can be used to open.
• The voltage to change V2 is provided as the following equation:
V2 = VF + (R1 + R2 + R3) × VSC/ (R2 + R3)
However, please set V2 to 3.5 V or more.
VCC
V1
V2
t
CS
TPO
t
VCCO
t
VCC
MB3771
CT
1
2
D1
V F 0.6 V
R4 >1 kΩ
R 1: 100 kΩ
R 5: 100 kΩ
R 2: 6.2 kΩ
3
8
7
6
4
5
R 6: 100 kΩ
VCCO
CS
R3: 56 kΩ
* : Diode has been added to prevent Comp.C from malfunctioning when VCC voltage is low.
Set V1 and V2 with care given to VF temperature characteristics (typically negative temperature
characteristics).
14
MB3771
■ TYPICAL CHARACTERISTICS
Detection voltage (VSC) vs.
Operating ambient temperature
Detection voltage VSC (V)
700
600
500
Ta =
+25°C
−40°C
400
300
−40°C +85°C
200
+25°C
100
0
+85°C
0
5
10
15
1.30
1.25
1.20
− 50
20
Power supply voltage VCC (V)
Power supply current (ICC2) vs.
power supply voltage
600
Ta = +85°C +25°C
400
−40°C
300
−40°C
200
+25°C
100
0
+85°C
0
5
10
15
20
Power supply voltage VCC (V)
3
2
−40°C
1
2
3
4
Power supply voltage VCC (V)
+75
+100
VSBH
1.25
VSBL
1.20
−50
−25
0
+25
+50
+75
+100
Detection voltage (VSA) vs.
Operating ambient temperature
5
Detection voltage VSAH,VSAL (V)
Output voltage VRESET (V)
4
0 +85°C
0
+50
Operating ambient temperature Ta (°C)
5
Ta =
+25°C
+25
1.30
Output voltage (RESET) vs. power supply voltage
1
0
Detection voltage (VSB) vs.
Operating ambient temperature
700
500
−25
Operating ambient temperature Ta (°C)
Detection voltage VSBH,VSBL (V)
Power supply current ICC2 (µA)
Power supply current ICC1 (µA)
Power supply current (ICC1) vs.
power supply voltage
4.5
4.4
VSAH
4.3
VSAL
4.2
4.1
4.0
−50
−25
0
+25
+50
+75
+100
Operating ambient temperature Ta (°C)
(Continued)
15
MB3771
(Continued)
Output voltage (VOHR) vs. output current
1.27
5.0
VSBH
1.26
Output voltage VOHR (V)
Detection voltage VSC, VSBL,VSBH (V)
Detection voltage (VSB, VSC) vs. Power supply voltage
VSC
1.25
1.24
VSBL
1.23
1.22
1.21
1.20
0
5
10
15
20
4.5
Ta = − 40°C
+25°C
4.0
Output voltage VOLR (V)
Ta = − 40°C
+25°C
+85°C
0.5
0
0
5
10
15
Ta = − 40°C
+85°C
1.0
+25°C
0
20
0
1.0
Ta = +25°C
10 m
− 40°C
+85°C
10 µ
1µ
1 p 10 p 100 p 1000 p 0.01µ 0.1 µ 1 µ 10 µ 100 µ
16
Output voltage VOLC (V)
Reset hold time tPO (s)
10
100 m
20
30
40
50
Output voltage (VOLC) vs.
output sink current
Reset hold time (tPO) vs. CT pin capacitance
1
10
Output sink current IRESET (mA)
Power supply voltage VCC (V)
CT pin capacitance (F)
−15
Output voltage (VOLR) vs. output sink current
2.0
1.0
100 µ
−10
Output current IRESET (µA)
1.5
1m
−5
0
Power supply voltage VCC (V)
Reset hold time (tPO) vs.
power supply voltage (CT = 0.01µF)
Reset hold time tPO (ms)
+85°C
Ta = − 40°C
+25°C
+85°C
0.5
0
0
5
10
15
Output sink current IOUTC (mA)
20
MB3771
■ NOTES ON USE
• Take account of common impedance when designing the earth line on a printed wiring board.
• Take measures against static electricity.
- For semiconductors, use antistatic or conductive containers.
- When storing or carrying a printed circuit board after chip mounting, put it in a conductive bag or container.
- The work table, tools and measuring instruments must be grounded.
- The worker must put on a grounding device containing 250 kΩ to 1 MΩ resistors in series.
• Do not apply a negative voltage
- Applying a negative voltage of −0.3 V or less to an LSI may generate a parasitic transistor, resulting in
malfunction.
■ ORDERING INFORMATION
Part number
Package
Remarks
MB3771PF-❏❏❏
8-pin Plastic SOP
(FPT-8P-M01)
Conventional version
MB3771PF-❏❏❏E1
8-pin Plastic SOP
(FPT-8P-M01)
Lead Free version
■ 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 “E1” at the end of the part number.
■ MARKING FORMAT (Lead Free version)
Lead-Free version
3771
E1XXXX
XXX
INDEX
17
MB3771
■ LABELING SAMPLE (Lead free version)
lead-free mark
JEITA logo
MB123456P - 789 - GE1
(3N) 1MB123456P-789-GE1
1000
(3N)2 1561190005 107210
JEDEC logo
G
Pb
QC PASS
PCS
1,000
MB123456P - 789 - GE1
2006/03/01
ASSEMBLED IN JAPAN
MB123456P - 789 - GE1
1/1
0605 - Z01A
1561190005
Lead-Free version
18
1000
MB3771
■ MB3771PF-❏❏❏E1 Recommended Conditions of Moisture Sensitivity Level
Item
Condition
Mounting Method
IR (infrared reflow) , Manual soldering (partial heating method)
Mounting times
2 times
Storage period
Before opening
Please use it within two years after
Manufacture.
From opening to the 2nd
reflow
Less than 8 days
When the storage period after
opening was exceeded
Please processes within 8 days
after baking (125 °C, 24H)
5 °C to 30 °C, 70%RH or less (the lowest possible humidity)
Storage conditions
[Temperature Profile for FJ Standard IR Reflow]
(1) IR (infrared reflow)
H rank : 260 °C Max.
260 °C
255 °C
220 °C
170 °C
to
190 °C
(b)
RT
(a)
(a) Temperature Increase gradient
(b) Preliminary heating
(c) Temperature Increase gradient
(d) Actual heating
(d’) Main heating
(e) Cooling
(c)
(d)
(e)
(d')
: Average 1 °C/s to 4 °C/s
: Temperature 170 °C to 190 °C, 60s to 180s
: Average 1 °C/s to 4 °C/s
: Temperature 260 °C MAX; 255 °C or more, 10s or less
: Temperature 230 °C or more, 40s or less
or
Temperature 225 °C or more, 60s or less
or
Temperature 220 °C or more, 80s or less
: Natural cooling or forced 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
19
MB3771
■ PACKAGE DIMENSIONS
8-pin plastic SOP
(FPT-8P-M01)
8-pin plastic SOP
(FPT-8P-M01)
Lead pitch
1.27 mm
Package width ×
package length
5.3 × 6.35 mm
Lead shape
Gullwing
Sealing method
Plastic mold
Mounting height
2.25 mm MAX
Weight
0.10 g
Code
(Reference)
P-SOP8-5.3×6.35-1.27
Note 1) *1 : These dimensions include resin protrusion.
Note 2) *2 : These dimensions do not include resin protrusion.
Note 3) Pins width and pins thickness include plating thickness.
Note 4) Pins width do not include tie bar cutting remainder.
+0.25
+.010
+0.03
*1 6.35 –0.20 .250 –.008
0.17 –0.04
+.001
8
.007 –.002
5
*2 5.30±0.30 7.80±0.40
(.209±.012) (.307±.016)
INDEX
Details of "A" part
+0.25
2.00 –0.15
+.010
.079 –.006
1
1.27(.050)
"A"
4
0.47±0.08
(.019±.003)
0.13(.005)
(Mounting height)
0.25(.010)
0~8˚
M
0.50±0.20
(.020±.008)
0.60±0.15
(.024±.006)
+0.10
0.10 –0.05
+.004
.004 –.002
(Stand off)
0.10(.004)
C
20
2002 FUJITSU LIMITED F08002S-c-6-7
Dimensions in mm (inches).
Note: The values in parentheses are reference values.
MB3771
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; Fujitsu does not warrant proper
operation of the device with respect to use based on such
information. When you develop equipment incorporating the
device based on such information, you must assume any
responsibility arising out of such use of the information. Fujitsu
assumes no liability for any damages whatsoever arising out of
the use of the information.
Any information in this document, including descriptions of
function and schematic diagrams, shall not be construed as license
of the use or exercise of any intellectual property right, such as
patent right or copyright, or any other right of Fujitsu or any third
party or does Fujitsu warrant non-infringement of any third-party’s
intellectual property right or other right by using such information.
Fujitsu assumes no liability for any infringement of the intellectual
property rights or other rights of third parties which would result
from the use of information contained herein.
The products described in this document are designed, developed
and manufactured as contemplated for general use, including
without limitation, ordinary industrial use, general office use,
personal use, and household use, but are not designed, developed
and manufactured as contemplated (1) for use accompanying fatal
risks or dangers that, unless extremely high safety is secured, could
have a serious effect to the public, and could lead directly to death,
personal injury, severe physical damage or other loss (i.e., nuclear
reaction control in nuclear facility, aircraft flight control, air traffic
control, mass transport control, medical life support system, missile
launch control in weapon system), or (2) for use requiring
extremely high reliability (i.e., submersible repeater and artificial
satellite).
Please note that Fujitsu will not be liable against you and/or any
third party for any claims or damages arising in connection with
above-mentioned uses of the products.
Any semiconductor devices have an inherent chance of failure. You
must protect against injury, damage or loss from such failures by
incorporating safety design measures into your facility and
equipment such as redundancy, fire protection, and prevention of
over-current levels and other abnormal operating conditions.
If any products described in this document represent goods or
technologies subject to certain restrictions on export under the
Foreign Exchange and Foreign Trade Law of Japan, the prior
authorization by Japanese government will be required for export
of those products from Japan.
Edited
Business Promotion Dept.
F0605