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MB3793-37APF-XXXE1: 产品描述Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8; 产品类别电源/电源管理电源电路; 文件大小250KB，共24页; 制造商FUJITSU(富士通); 官网地址http://edevice.fujitsu.com/fmd/en/index.html; 标准

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MB3793-37APF-XXXE1概述

Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8

MB3793-37APF-XXXE1规格参数

参数名称	属性值
是否Rohs认证	符合
厂商名称	FUJITSU(富士通)
包装说明	SOP,
Reach Compliance Code	compliant
ECCN代码	EAR99
其他特性	DETECTION THRESHOLD VOLTAGE IS 3.7V; POWER-ON RESET
可调阈值	NO
模拟集成电路 - 其他类型	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码	R-PDSO-G8
长度	6.35 mm
信道数量	1
功能数量	1
端子数量	8
最高工作温度	85 °C
最低工作温度	-40 °C
封装主体材料	PLASTIC/EPOXY
封装代码	SOP
封装形状	RECTANGULAR
封装形式	SMALL OUTLINE
峰值回流温度（摄氏度）	NOT SPECIFIED
认证状态	Not Qualified
座面最大高度	2.25 mm
最大供电电压 (Vsup)	6 V
最小供电电压 (Vsup)	1.2 V
标称供电电压 (Vsup)	5 V
表面贴装	YES
技术	BIPOLAR
温度等级	INDUSTRIAL
端子形式	GULL WING
端子节距	1.27 mm
端子位置	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED
宽度	5.3 mm

MB3793-37APF-XXXE1文档预览

FUJITSU MICROELECTRONICS

DATA SHEET

DS04-27403-4Ea

ASSP For Power Supply Applications

BIPOLAR

Power Voltage Monitoring IC

with Watchdog Timer

MB3793

-37A

■

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.

There is also a mask option that can detect voltages of 4.9 to 2.4 V in 0.1-V steps.

The model number is MB3793-37A corresponding to the detected voltage. The model number and package code

are as shown below.

Model No.

Marking code

Detection voltage

MB3793-37A

3793AF

3.7 V

■

FEATURES

•

•

•

•

•

•

•

Precise detection of power voltage fall:

±2.5%

Detection voltage with hysteresis

Low power dispersion: I

CC

= 30

µA

(reference)

Internal dual-input watchdog timer

Watchdog-timer halt function (by inhibition pin)

Independently-set wacthdog and reset times

Two types of packages (SOP-8pin : 2 types)

■

APPLICATION

• Arcade Amusement

etc

Copyright©1998-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved

2006.5

MB3793

-37A

■

PIN ASSIGNMENT

(Top view)

1

2

3

4

8

7

6

5

CK1

CK2

INH

V

CC

RESET

CTW

CTP

GND

(FPT-8P-M01)

(FPT-8P-M02)

■

PIN DESCRIPTION

Pin no.

1

2

3

4

Symbol

RESET

CTW

CTP

GND

Descriptions

Outputs reset pin

Watchdog timer monitor time

setting pin

Power-on reset hold time

setting pin

Ground pin

Pin no.

5

6

7

8

Symbol

V

CC

INH

CK2

CK1

Descriptions

Power supply pin

Inhibit pin

Inputs clock 2 pin

Inputs clock 1 pin

2

MB3793

-37A

■

BLOCK DIAGRAM

To V

CC

of all blocks

.

I

1

= 3

µA

.

=

I

2

. .

30

µA

5 V

CC

CTP 3

.

R

1

=

.

494 kΩ

RESET 1

Output circuit

Logic circuit

INH 6

Comp.S

CTW 2

Pulse generator 1

CK1 8

.

V

REF

= 1.24 V

.

R

2

. .

=

240 kΩ

To GND of

all blocks

Watchdog

timer

Reference

voltage

generator

−

+

V

S

Pulse generator 2

CK2 7

4 GND

3

MB3793

-37A

■

BLOCK DESCRIPTION

1. Comp. S

Comp. S is a comparator with hysteresis to compare the reference voltage with a voltage (V

S

) that is the result of

dividing the power voltage (V

CC

) by resistors 1 and 2. When V

S

falls below 1.24 V, a reset signal is output.

This function enables the MB3793 to detect an abnomality within 1

µs

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.

Since the reset (RESET) output buffer has CMOS organization, no pull-up resistor is needed.

3. Pulse generator

The pulse generator generates pulses when the voltage at the CK1 and CK2 clock pins changes to High from Low

level (positive-edge trigger) and exceeds the threshold voltage; it sends the clock signal to the watchdog timer.

4. Watchdog timer

The watchdog timer can monitor two clock pulses. Short-circuit the CK1 and CK2 clock pins to monitor a single

clock pulse.

5. Inhibition pin

The inhibition (INH) pin forces the watchdog timer on/off. When this pin is High level, the watchdog timer is stopped.

6. Logic circuit

The logic circuit contains flip-flops.

Flip-flop RSFF1 controls the charging and discharging of the power-on reset hold time setting capacitor (C

TP

).

Flip-flop RSFF2 turns on/off the circuit that accelerates charging of the power-on reset hold time setting capacitor

(C

TP

) at a reset. The RSFF2 operates only at a reset; it does not operate at a power-on reset when the power is

turned on.

4

MB3793

-37A

■

ABSOLUTE MAXIMUM RATINGS

Rating

Min

–0.3

–0.3

Max

+7

+7

Parameter

Power supply voltage*

CK1

Input voltage*

CK2

INH

Reset output current

Allowable loss

Storage temperature

RESET

Symbol

V

CC

V

CK1

V

CK2

I

INH

I

OL

I

OH

P

D

Tstg

Conditions

—

—

—

—

—

Ta

≤

+85°C

—

Unit

V

V

–10

—

–55

+10

200

+125

mA

mW

°C

*: The power supply voltage is based on the ground voltage (0 V).

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

Reset (RESET) output current

Power-on reset hold time setting

capacity

Watchdog-timer monitoring time

setting capacity*

Operating ambient temperature

Symbol

V

CC

I

OL

I

OH

C

TP

C

TW

Ta

Conditions

—

—

—

—

—

Value

Min

1.2

–5

0.001

0.001

–40

Typ

—

—

—

—

—

Max

6.0

+5

10

1

+85

Unit

V

mA

µF

µF

°C

*: The watchdog timer monitor time range depends on the rating of the setting capacitor.

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

representatives beforehand.

5

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MB3793-37APF-XXXE1相似产品对比

	MB3793-37APF-XXXE1	MB3793-37APNF-XXXE1	MB3793-37APNF-XXX	MB3793-37APF-XXX
描述	Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8	Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 3.90 X 5.05 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, SOP-8	Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 3.90 X 5.05 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, PLASTIC, SOP-8	Power Supply Management Circuit, Fixed, 1 Channel, BIPolar, PDSO8, 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, PLASTIC, SOP-8
是否Rohs认证	符合	符合	不符合	不符合
厂商名称	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)
包装说明	SOP,	SOP,	SOP,	SOP,
Reach Compliance Code	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	EAR99
其他特性	DETECTION THRESHOLD VOLTAGE IS 3.7V; POWER-ON RESET	DETECTION THRESHOLD VOLTAGE IS 3.7V; POWER-ON RESET	DETECTION THRESHOLD VOLTAGE IS 3.7V; POWER-ON RESET	DETECTION THRESHOLD VOLTAGE IS 3.7V; POWER-ON RESET
可调阈值	NO	NO	NO	NO
模拟集成电路 - 其他类型	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
长度	6.35 mm	5.05 mm	5.05 mm	6.35 mm
信道数量	1	1	1	1
功能数量	1	1	1	1
端子数量	8	8	8	8
最高工作温度	85 °C	85 °C	85 °C	85 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	SOP	SOP	SOP	SOP
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
峰值回流温度（摄氏度）	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	2.25 mm	1.75 mm	1.75 mm	2.25 mm
最大供电电压 (Vsup)	6 V	6 V	6 V	6 V
最小供电电压 (Vsup)	1.2 V	1.2 V	1.2 V	1.2 V
标称供电电压 (Vsup)	5 V	5 V	5 V	5 V
表面贴装	YES	YES	YES	YES
技术	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR
温度等级	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
端子形式	GULL WING	GULL WING	GULL WING	GULL WING
端子节距	1.27 mm	1.27 mm	1.27 mm	1.27 mm
端子位置	DUAL	DUAL	DUAL	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
宽度	5.3 mm	3.9 mm	3.9 mm	5.3 mm

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