MB3771PF-G-BND-JN-ERE1 [CYPRESS]
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8;
| 型号： | MB3771PF-G-BND-JN-ERE1 |
| 厂家： | 
CYPRESS |
| 描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8 光电二极管 |
| 文件： | 总22页 (文件大小：315K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MB3771
Power Supply Monitor
Description
The Cypress 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.
Cypress Semiconductor Corporation
Document Number: 002-08511 Rev. *D
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised June 28, 2017
MB3771
Contents
Description ............................................................................. 1
Features .................................................................................. 1
Application ............................................................................. 1
Contents ................................................................................. 2
1. Pin Assignment ................................................................. 3
2. Block Diagram ................................................................... 3
3. Functional Descriptions .................................................... 4
4. Function Explanation ........................................................ 4
5. Absolute Maximum Ratings ............................................. 5
6. Recommended Operating Conditions ............................. 5
7. Electrical Characteristics .................................................. 6
7.1 DC Characteristics ..................................................... 6
7.2 AC Characteristics ...................................................... 7
8. Application Circuit ............................................................. 8
8.1 5V Power Supply Monitor ........................................... 8
8.2 5V Power Supply Voltage Monitor
(VCC = 5 V) .................................................................... 11
8.7 5 V Power Supply Monitor with Non-inverted
RESET ............................................................................ 11
8.8 Supply Voltage Monitoring with Delayed Trigger ..... 11
8.9 Dual (Positive/Negative) Power Supply Voltage
Monitoring (VCC = 5 V, VEE = Negative Power Supply). 12
8.10 Reference Voltage Generation and Voltage Sagging
Detection ........................................................................ 12
8.11 Low Voltage and Over Voltage Detection
(VCC = 5 V) .................................................................... 14
8.12 Detection of Abnormal State of Power Supply System
(VCC = 5 V) .................................................................... 14
8.13 Back-up Power Supply System (VCC = 5 V) ......... 15
9. Typical Characteristics ................................................... 17
10. Notes on Use .................................................................. 19
11. Ordering Information ..................................................... 19
12. RoHS Compliance Information ..................................... 19
13. Package Dimensions ..................................................... 20
Document History ................................................................ 21
Sales, Solutions, and Legal Information ........................... 22
(Externally Fine-Tuned Type) ........................................... 8
8.3 Arbitrary Voltage Supply Monitor ................................ 9
8.4 5 V and 12 V Power Supply Monitor (2 types of power
supply monitor VCC1 = 5 V, VCC2 =12 V) ..................... 10
8.5 5 V and 12 V Power Supply Monitor (RESET signal is
generated by 5 V, VCC1 = 5 V, VCC2 = 12 V) ............... 10
8.6 5 V Power Supply Monitor with forced RESET input
Document Number: 002-08511 Rev. *D
Page 2 of 22
MB3771
1. Pin Assignment
(TOP VIEW)
CT
VSC
1
2
3
4
8
7
6
5
RESET
VSA
OUTC
GND
VSB RESIN
VCC
(SOE008)
2. Block Diagram
VCC
5
≅ 1.24 V
≅ 1.24 V
REFERENCE VOLTAGE
≅ 100 kΩ
≅ 40 kΩ
+
−
+
−
≅ 12 μA
≅ 10 μA
V
SA
7
6
2
V
SC
Comp. A
−
+
−
+
Comp. C
+
−
R
S
Q
V
SB / RESIN
Comp. B
4
GND
1
8
3
OUT
C
CT
RESET
Document Number: 002-08511 Rev. *D
Page 3 of 22
MB3771
3. 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(8.Application Circuit 8.3 : Arbitrary Voltage Supply Monitor), and can also be used
as a forced reset pin (with reset hold time) with TTL input (8.Application Circuit 8.6 : 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 (8.Application Circuit 8.1 : 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 (8.Application Circuit 8.8 : 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 (8.Application Circuit 8.11 : Low Voltage and Over Voltage Detection
(VCC = 5 V) ) and positive logic RESET signal output (8.Application Circuit 8.7 : 5 V Power Supply Monitor with Non-inverted RESET),
as well as for creating a reference voltage (8.Application Circuit 8.10 : 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).
4. Function Explanation
V
HYS
V
S
V
CC
0.8 V
t
t
V
CC
1
2
3
4
8
7
6
5
RESET
C
T
T
PO
TPO
RESET
(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 “9.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 7.2.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.
Document Number: 002-08511 Rev. *D
Page 4 of 22
MB3771
5. Absolute Maximum Ratings
Rating
Parameter
Symbol
Unit
Min
−0.3
−0.3
−0.3
−0.3
–
Max
Power supply voltage
Input voltage
VCC
VSA
VSB
VSC
PD
+20
VCC + 0.3 ( < +20)
+20
V
V
V
+20
V
Power dissipation
200 (Ta ≤ 85°C)
+125
mW
°C
Storage temperature
Tstg
−55
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.
6. Recommended Operating Conditions
Value
Parameter
Symbol
Unit
Min
Max
Power supply voltage
Output current
VCC
IRESET
IOUTC
Ta
3.5
18
V
0
0
20
6
mA
mA
°C
Operating ambient temperature
−40
+85
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 Cypress representatives beforehand.
Document Number: 002-08511 Rev. *D
Page 5 of 22
MB3771
7. Electrical Characteristics
7.1 DC Characteristics
(VCC = 5 V, Ta = + 25°C)
Value
Parameter
Symbol
Conditions
Unit
Min
–
Typ
350
400
4.20
4.20
4.30
4.30
100
1.230
1.230
3
Max
500
600
4.30
4.35
4.40
4.45
150
1.248
1.260
10
Power supply current
Detection voltage
ICC1
ICC2
VSB = 5 V, VSC = 0 V
VSB = 0 V, VSC = 0 V
VCC
µA
µA
V
–
VSAL
(DOWN)
4.10
4.05
4.20
4.15
50
1.212
1.200
–
Ta = −40°C to +85°C
VCC
V
VSAH (UP)
V
Ta = −40°C to +85°C
–
V
Hysteresis width
Detection voltage
VHYSA
VSB
mV
V
VSB
Ta = −40°C to +85°C
VCC = 3.5 V to 18 V
–
V
Deviation of detection voltage
Hysteresis width
ΔVSB
VHYSB
IIHB
mV
mV
nA
nA
V
14
–
28
42
Input current
VSB = 5 V
0
250
250
–
IILB
VSB = 0 V
–
20
Output voltage
VOHR
VOLR
IRESET = −5 μA, VSB = 5 V
IRESET = 3mA, VSB = 0 V
IRESET = 10mA, VSB = 0 V
VOLR = 1.0 V, VSB = 0 V
VSB = 5 V, VCT = 0.5 V
VSC = 5 V
4.5
–
4.9
0.28
0.38
40
0.4
V
–
0.5
V
Output sink current
CT charge current
Input current
IRESET
ICT
20
9
–
mA
µA
nA
nA
V
12
16
IIHC
–
0
500
500
1.265
1.285
10
IILC
VSC = 0 V
–
50
Detection voltage
VSC
–
1.225
1.205
–
1.245
1.245
3
Ta = −40°C to +85°C
VCC = 3.5 V to 18 V
VOHC = 18 V
V
Deviation of detection voltage
Output leakage current
Output voltage
ΔVSC
IOHC
mV
µA
V
–
0
1
VOLC
IOUTC
VCCL
IOUTC = 4 mA, VSC = 5 V
VOLC = 1.0 V, VSC = 5 V
VOLR = 0.4 V, IRESET = 200 µA
–
0.15
15
0.4
Output sink current
6
–
mA
V
Reset operation minimum
supply voltage
–
0.8
1.2
Document Number: 002-08511 Rev. *D
Page 6 of 22
MB3771
7.2 AC Characteristics
Parameter
(VCC = 5 V, Ta = + 25°C, CT = 0.01 µF)
Value
Unit
Symbol
Conditions
Min
5.0
0.5
–
Typ
Max
VSA, VSB input pulse width
Reset hold time
tPI
tPO
tr
–
–
–
–
µs
ms
µs
µs
µs
µs
µs
1.0
1.0
0.1
2
1.5
1.5
0.5
10
–
RESET rise time
RL = 2.2 kΩ,
CL = 100 pF
RESET fall time
tf
–
1
Propagation delay time
tPD*
–
–
2
tPHL
*
*
RL = 2.2 kΩ,
CL = 100 pF
–
0.5
1.0
2
tPLH
–
–
*1: In case of VSB termination.
*2: In case of VSC termination.
Document Number: 002-08511 Rev. *D
Page 7 of 22
MB3771
8. Application Circuit
8.1 5V Power Supply Monitor
Monitored by VSA. Detection threshold voltage is VSAL and VSAH
VCC
MB3771
1
2
3
4
8
7
6
5
RESET
Logic
circuit
CT
8.2 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)
10
R2 (kΩ)
3.9
Detection voltage : VSAL (V)
Detection voltage : VSAH (V)
4.37
4.11
4.47
4.20
9.1
3.9
VCC
MB3771
1
2
8
7
RESET
R
1
2
Logic
Circuit
C
T
3
4
6
5
R
Document Number: 002-08511 Rev. *D
Page 8 of 22
MB3771
8.3 Arbitrary Voltage Supply Monitor
8.3.1 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).........
V
CC
MB3771
1
8
7
RESET
2
R
R
1
2
C
T
3
4
6
5
8.3.2 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).
Detection
RESET Output min. power
supply voltage (V)
Output Current
(mA)
VCC (V)
140
R1 (MΩ)
1.6
R2 (kΩ)
R3 (kΩ)
110
voltage (V)
100
6.7
20
20
20
< 0.2
< 0.5
< 1.6
100
40
81
33
3.8
1.4
1.3
56
11
0.51
■ 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.
V
CC
R3
5 V output(Stablized)
1
2
R
4
:
8
7
RESET
100 kΩ
CT
R
1
2
3
4
6
5
0.47 μF
R5:
33 kΩ
R
Document Number: 002-08511 Rev. *D
Page 9 of 22
MB3771
8.4 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
V
V
CC2
CC1
MB3771
1
8
7
6
5
RESET
R
1
2
: 390 kΩ
: 62 kΩ
2
3
4
Logic
circuit
C
T
R
8.5 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 =
Hysteresis width =
× VSC
(8.95 V in the circuit above)
R2 + R3
R1 (R3 − R3 // R4)
(R2 + R3) (R2 + R3 // R4)
× VSC
(200 mV in the circuit above)
V
V
CC2
CC1
R
L
: 10 kΩ
MB3771
R : 100 kΩ
5
R : 390 kΩ
1
1
2
3
4
RESET
IRQ
8
7
6
5
or
Port Logic Circuit
R
2
3
: 33 kΩ
: 30 kΩ
R4: 510 kΩ
CT
R
Document Number: 002-08511 Rev. *D
Page 10 of 22
MB3771
8.6 5 V Power Supply Monitor with forced RESET input (VCC = 5 V)
RESIN is an TTL compatible input.
RESIN
V
CC
MB3771
1
8
RESET
2
3
4
7
6
5
C
T
Logic Circuit
8.7 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.
V
CC
MB3771
R : 10 kΩ
L
1
8
7
6
5
CT
2
3
4
RESET
8.8 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 5 V
4 V
MB3771
1
8
7
6
5
RESET
2
3
4
CT
C1
Document Number: 002-08511 Rev. *D
Page 11 of 22
MB3771
8.9 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).
V
CC
R5 : 5.1 kΩ
MB3771
8
7
1
2
RESET
: 20 kΩ
R
4
V
EE
R
1
2
R3 :
20 kΩ
6
5
3
4
0.22 μF
CT
R
: 20 kΩ
SBD
8.10 Reference Voltage Generation and Voltage Sagging Detection
8.10.1 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
8
7
6
5
1
2
3
4
RESET
CT
9 V (≅ 50 mA)
R3 :
7.5 kΩ
R
R
1
2
: 300 kΩ
: 62 kΩ
0.47 μF
R4 :
1.2 kΩ
Document Number: 002-08511 Rev. *D
Page 12 of 22
MB3771
8.10.2 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
8
7
6
5
1
2
3
4
RESET
C
T
5 V(≅ 50 mA)
0.47 μF
R
3
4
: 3.6 kΩ
: 1.2 kΩ
R
8.10.3 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)
40
R1 (kΩ)
11
Output Current (mA)
< 1.6
< 1.4
< 0.6
24
6.2
15
4.7
V
CC
R1
1
2
8
7
RESET
5 V
3
4
6
5
CT
R2 :
100 kΩ
0.47 μF
R3
: 33 kΩ
GND
8.10.4 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
1
2
8
7
RESET
3
4
6
5
CT
Reference
Voltage
0.47 μF
GND
Document Number: 002-08511 Rev. *D
Page 13 of 22
MB3771
8.11 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
V
CC
R
R
3
4
R
R
1
MB3771
RESET
1
2
3
4
8
RESET
7
6
5
CT
2
V
CC
V
SL
VSH
8.12 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
R
1
2
MB3771
R3
: 620 Ω
CLEAR
1
8
7
6
5
R4:
2
3
4
1 kΩ to 100 kΩ
R
Document Number: 002-08511 Rev. *D
Page 14 of 22
MB3771
8.13 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
Document Number: 002-08511 Rev. *D
Page 15 of 22
MB3771
VCC
D1
R4 >1 kΩ
V F 0.6 V
R 1: 100 kΩ
R 2: 6.2 kΩ
R 5: 100 kΩ
MB3771
R 6: 100 kΩ
1
2
3
8
7
6
VCCO
CT
4
5
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).
Document Number: 002-08511 Rev. *D
Page 16 of 22
MB3771
9. Typical Characteristics
Detection voltage (VSC) vs.
Power supply current (ICC1) vs.
Operating ambient temperature
power supply voltage
700
1.30
600
500
400
300
200
100
0
Ta =
+25°C
−40°C
1.25
1.20
+85°C
−40°C
+25°C
+85°C
0
5
10
15
20
− 50
−25
0
+25
+50
+75
+100
Power supply voltage VCC (V)
Operating ambient temperature Ta (°C)
Power supply current (ICC2) vs.
power supply voltage
Detection voltage (VSB) vs.
Operating ambient temperature
700
1.30
600
500
+25°C
Ta =
+85°C
V
SBH
400
300
200
100
0
−40°C
1.25
1.20
−40°C
V
SBL
+25°C
+85°C
5
0
10
15
20
−50
−25
0
+25
+50
+75
+100
Power supply voltage VCC (V)
Operating ambient temperature Ta (°C)
Detection voltage (VSA) vs.
Operating ambient temperature
Output voltage (RESET) vs. power supply voltage
4.5
5
4
3
2
4.4
4.3
VSAH
V
SAL
4.2
4.1
4.0
Ta =
1
+25°C
−40°C
+85°C
0
−50
−25
0
+25
+50
+75
+100
0
1
2
3
4
5
Operating ambient temperature Ta (°C)
Power supply voltage VCC (V)
(Continued)
Document Number: 002-08511 Rev. *D
Page 17 of 22
MB3771
(Continued)
Output voltage (VOHR) vs. output current
Detection voltage (VSB, VSC) vs. Power supply voltage
1.27
5.0
4.5
4.0
V
SBH
1.26
1.25
1.24
1.23
1.22
1.21
1.20
V
SC
+85°C
V
SBL
− 40°C
Ta =
+25°C
0
5
10
15
20
0
− 5
−10
−15
Power supply voltage VCC (V)
Output current IRESET (μA)
Reset hold time (tPO) vs.
power supply voltage (CT = 0.01μF)
Output voltage (VOLR) vs. output sink current
1.5
2.0
Ta = − 40°C
+85°C
Ta =
− 40°C
+25°C
1.0
+85°C
1.0
+25°C
0.5
0
0
0
5
10
15
20
0
10
20
30
40
50
Output sink current IRESET (mA)
Power supply voltage VCC (V)
Output voltage (VOLC) vs.
output sink current
Reset hold time (tPO) vs. CT pin capacitance
10
1
1.0
0.5
0
− 40°C
Ta =
+25°C
+85°C
100 m
Ta =
+25°C
+85°C
10 m
1 m
− 40°C
100
10
1
μ
μ
μ
1 p 10 p 100 p 1000 p 0.01
μ 0.1 μ 1 μ 10 μ 100 μ
0
5
10
15
20
Output sink current IOUTC (mA)
CT pin capacitance (F)
Document Number: 002-08511 Rev. *D
Page 18 of 22
MB3771
10. 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.
11. Ordering Information
Part Number
Package
Remarks
8-pin Plastic SOP
(SOE008)
MB3771PF-❏❏❏E1
–
12. RoHS Compliance Information
The LSI products of Cypress 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.
Document Number: 002-08511 Rev. *D
Page 19 of 22
MB3771
13. Package Dimensions
Package Code: SOE008
ꢈ
0.25
ꢃ;
H
D
4
D
㻭
5
ꢏ
ꢅ
㻰
ꢅ
ꢏ
ꢈ
4
E1
E
INDEX AREA
ꢇ
0.25
H D
ꢃ;
ꢀ
ꢄ
ꢄ
ꢀ
0.40
C A-B D
㻮
5
BOTTOM VIEW
TOP VIEW
DETAIL A
L2
GAUGE
PLANE
ș
c
A
A
㻯
SEATING
PLANE
C
A'
b
A1
10
0.10
A-B
e
L
L1
SECTION A-A'
ꢎ
b
0.13
C
D
8
DETAIL A
SIDE VIEW
127(6
ꢁꢂ $/ꢂ ', 0(16, 21ꢂ $5ꢂ, ꢂ 0, //, 0(7( ꢁ
ꢁꢂ ', 0(16, 21, 1 ꢂ $1ꢂ 7 2/(5$1&, 1 ꢂ 3( ꢂꢂ $6 0ꢂ <ꢀ ꢁ ꢅ ꢆ ꢀꢇꢇ ꢁ
DIMENSION
SYMBOL
MIN. NOM. MAX.
2.25
ꢁꢂ ', 0(16, 21, 1 ꢂ ꢂ, 1&/ 8'ꢂ 02/ ꢂ )/$6 ꢉꢂ ', 0(16, 21, 1 ꢂ (ꢂ '2(ꢂ 12ꢂ, 1&/ 8'(
ꢂꢂꢂꢂ, 17(5/($ ꢂ )/$6 ꢂ 2ꢂ 3527586, 2 ꢁꢂ, 17(5/($ ꢂ )/$6 ꢂ 2ꢂ 3527586, 216
ꢂꢂꢂꢂ 6+$/ꢂ 12ꢂ (;&(( ꢂ ꢁ ꢊꢃꢂ Pꢂ 3( ꢂ 6, ' ꢁꢂ ꢂ DQꢂ (ꢂ ', 0(16, 2ꢂ $5ꢂ '(7(50, 1('
A
0.20
0.05
A1
D
ꢂꢂꢂꢂ $ꢂ '$78 ꢂ
ꢁ
6.35 BSC
7.80 BSC
5.30 BSC
ꢁꢂ 7+ꢂ 3$&.$*ꢂ 7 2ꢂ 0$ꢂ %ꢂ 6 0$//( ꢂ 7+$ ꢂ 7+ꢂ 3$&.$*ꢂ %277 2 ꢁ
ꢂꢂꢂꢂ ', 0(16, 21, 1 ꢂꢂ ꢂ DQꢂ (ꢂ $5ꢂ '(7(50, 1( ꢂ $ꢂ 7+ꢂ 287(50267
ꢂꢂꢂꢂ (;75( 0(ꢂ 2ꢂ 7+ꢂ 3/$67, ꢂ %2'ꢂ (;&/ 86, 9ꢂ 2ꢂ 02/ ꢂ )/$6 ꢉ
ꢂꢂꢂꢂ 7+ꢂ %$ ꢂ %855 ꢉꢂ *$7 ꢂ %855ꢂ $1ꢂ, 17(5/($ ꢂ )/$6 ꢉꢂ %8ꢂ, 1&/ 8', 1*
ꢂꢂꢂꢂ $1ꢂ 0, 6 0$7&ꢂ %(7 :(( ꢂ 7+ꢂ 7 2ꢂ $1ꢂ %277 2 ꢂ 2ꢂ 7+ꢂ 3/$67, ꢂ %2' ꢁ
E
E
1
ș
0°
0.13
0.39
0.45
8°
ꢁꢂ '$780ꢂ
ꢂ ꢂ ꢂ 7 ꢂ %ꢂ '(7(50, 1( ꢂ $ꢂ '$78 ꢂ ꢁ
0.20
0.55
0.75
c
b
L
L
L
e
ꢁꢂ ꢍ ꢂ, ꢂ 7+ꢂ 0$;, 08 ꢂ 180%( ꢂ 2ꢂ 7(50, 1$ꢂ 326, 7, 21ꢂ ) 2ꢂ 7+ꢂ 63(&, ), ('
ꢂꢂꢂꢂꢂ 3$&.$*ꢂ /(1*7 ꢁ
0.47
ꢁꢂ 7+ꢂ ', 0(16, 2ꢂ $33/ ꢂ 7 ꢂ 7+ꢂ )/$ꢂ 6(&7, 2ꢂ 2ꢂ 7+ꢂ /($ ꢂ %(7 :(( ꢂ ꢁ ꢀꢂ PP
0.60
ꢂꢂꢂꢂ 7 ꢂ ꢁ ꢃꢅ Pꢂ )52 ꢂ 7+ꢂ /($ ꢂ 7,
ꢁ
1.25 REF
0.25 BSC
1.27 BSC
1
ꢁꢂ ', 0(16, 2ꢂ ꢍ Eꢂ '2(ꢂ 12ꢂ, 1&/ 8'ꢂ 7+ꢂ '$ 0%$ ꢂ 3527586, 2 ꢁꢂ $// 2 :$%/(
ꢂꢂꢂꢂ '$ 0%$ ꢂ 3527586, 2ꢂ 6+$/ꢂ %ꢂ ꢁ ꢀꢊ Pꢂ 7 27$ꢂ, ꢂ (;&(6ꢂ 2ꢂ 7+ꢂ ꢍ Eꢂ ', 0(16, 21
ꢂꢂꢂꢂ $ꢂ 0$;, 08 ꢂ 0$7(5, $ꢂ &21', 7, 2 ꢁ
2
ꢂꢂꢂꢂ 7+ꢂ '$ 0%$ ꢂ 0$ꢂ 12ꢂ %ꢂ / 2&$7( ꢂ 2ꢂ 7+ꢂ / 2 :( ꢂ 5$', 8ꢂ 2ꢂ 7+ꢂ ) 22ꢁ
ꢁꢂ 7+, ꢂ &+$ 0)( ꢂ )($785ꢂ, ꢂ 237, 21$ ꢁꢂ / ꢂ, ꢂ, ꢂ 12ꢂ 35(6(1 ꢉꢂ 7+( ꢂ ꢂ 3, ꢂ ꢀ
ꢂꢂꢂꢂ, '(17, ), ( ꢂ 086ꢂ %ꢂ / 2&$7( ꢂ :, 7+, ꢂ 7+ꢂ, 1'(ꢂ $5(ꢂ, 1', &$7('
ꢀ ꢁꢂ ꢍ $ꢀꢂ, ꢂ '(), 1( ꢂ $ꢂ 7+ꢂ 9(57, &$ꢂ ', 67$1&ꢂ )52 ꢂ 7+ꢂ 6($7, 1 ꢂ 3/$1ꢂ 7 2
ꢂꢂꢂꢂꢂꢂꢂ 7+ꢂ / 2 :(6ꢂꢂ 32, 1ꢂ 2ꢂ 7+ꢂ 3$&.$*ꢂ %2'ꢂ (;&/ 8', 1 ꢂ 7+ꢂ /, ꢂ $1ꢂ 25
ꢂꢂꢂꢂꢂꢂꢂ 7+(50$ꢂ (1+$1&( 0(1ꢂ 2ꢂ &$9, 7 ꢂ '2 :ꢂ 3$&.$*ꢂ &21), *85$7, 21 ꢁ
11. JEDEC SPECIFICATION NO. REF : N/A
002-15857 Rev. **
Document Number: 002-08511 Rev. *D
Page 20 of 22
MB3771
Document History
Spansion Publication Number: DS04-27400-11Ea
Document Title: MB3771 Power Supply Monitor
Document Number: 002-08511
Orig. of
Change
Submission
Date
Revision
ECN
Description of Change
**
–
TAOA
05/12/2006 Migrated to Cypress and assigned document number 002-08511.
No change to document contents or format.
*A
*B
5177314
5550024
TAOA
03/16/2016 Updated to Cypress format.
Updated Pin Assignment: Change the package name from FPT-8P-M01 to SOE008
Updated Ordering Information: Change the package name from FPT-8P-M01 to SOE008
Updated Package Dimensions: Updated to Cypress format
HIXT
12/12/2016
Deleted Marking Format (Lead Free version)
Deleted Labeling Sample (Lead free version)
Deleted MB3771PF-❏❏❏E1 Recommended Conditions of Moisture Sensitivity Level
Deleted the part number, “MB3771PF-❏❏❏”, from Ordering Information
*C
*D
5606248
5788467
HIXT
01/31/2017
Deleted the words in the Remarks, “Lead Free version”, from Ordering Information
MASG
06/28/2017 Adapted Cypress new logo.
Document Number: 002-08511 Rev. *D
Page 21 of 22
MB3771
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
Products
PSoC® Solutions
ARM® Cortex® Microcontrollers
cypress.com/arm
cypress.com/automotive
cypress.com/clocks
cypress.com/interface
cypress.com/iot
PSoC 1 | PSoC 3 | PSoC 4 | PSoC 5LP | PSoC 6
Automotive
Cypress Developer Community
Clocks & Buffers
Interface
Forums | WICED IOT Forums | Projects | Video | Blogs | Training
| Components
Internet of Things
Memory
Technical Support
cypress.com/memory
cypress.com/mcu
cypress.com/support
Microcontrollers
PSoC
cypress.com/psoc
cypress.com/pmic
cypress.com/touch
cypress.com/usb
Power Management ICs
Touch Sensing
USB Controllers
Wireless/RF
cypress.com/wireless
© Cypress Semiconductor Corporation, 2003-2017. This document is the property of Cypress Semiconductor Corporation and its subsidiaries, including Spansion LLC (“Cypress”). This document,
including any software or firmware included or referenced in this document (“Software”), is owned by Cypress under the intellectual property laws and treaties of the United States and other countries
worldwide. Cypress reserves all rights under such laws and treaties and does not, except as specifically stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other
intellectual property rights. If the Software is not accompanied by a license agreement and you do not otherwise have a written agreement with Cypress governing the use of the Software, then Cypress
hereby grants you a personal, non-exclusive, nontransferable license (without the right to sublicense) (1) under its copyright rights in the Software (a) for Software provided in source code form, to
modify and reproduce the Software solely for use with Cypress hardware products, only internally within your organization, and (b) to distribute the Software in binary code form externally to end users
(either directly or indirectly through resellers and distributors), solely for use on Cypress hardware product units, and (2) under those claims of Cypress’s patents that are infringed by the Software (as
provided by Cypress, unmodified) to make, use, distribute, and import the Software solely for use with Cypress hardware products. Any other use, reproduction, modification, translation, or compilation
of the Software is prohibited.
TO THE EXTENT PERMITTED BY APPLICABLE LAW, CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS DOCUMENT OR ANY SOFTWARE
OR ACCOMPANYING HARDWARE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. To the extent
permitted by applicable law, Cypress reserves the right to make changes to this document without further notice. Cypress does not assume any liability arising out of the application or use of any
product or circuit described in this document. Any information provided in this document, including any sample design information or programming code, is provided only for reference purposes. It is
the responsibility of the user of this document to properly design, program, and test the functionality and safety of any application made of this information and any resulting product. Cypress products
are not designed, intended, or authorized for use as critical components in systems designed or intended for the operation of weapons, weapons systems, nuclear installations, life-support devices or
systems, other medical devices or systems (including resuscitation equipment and surgical implants), pollution control or hazardous substances management, or other uses where the failure of the
device or system could cause personal injury, death, or property damage (“Unintended Uses”). A critical component is any component of a device or system whose failure to perform can be reasonably
expected to cause the failure of the device or system, or to affect its safety or effectiveness. Cypress is not liable, in whole or in part, and you shall and hereby do release Cypress from any claim,
damage, or other liability arising from or related to all Unintended Uses of Cypress products. You shall indemnify and hold Cypress harmless from and against all claims, costs, damages, and other
liabilities, including claims for personal injury or death, arising from or related to any Unintended Uses of Cypress products.
Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, WICED, PSoC, CapSense, EZ-USB, F-RAM, and Traveo are trademarks or registered trademarks of Cypress in
the United States and other countries. For a more complete list of Cypress trademarks, visit cypress.com. Other names and brands may be claimed as property of their respective owners.
Document Number: 002-08511 Rev. *D
Revised June 28, 2017
Page 22 of 22
相关型号：
MB3773PF-G-BND-JN-ERE1
1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, 6.35 X 5.30 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8
CYPRESS
MB3773PF-G-BND-JN-ERE1
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MB3773PF-G-BND-JN-ERE1
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