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参数资料
| 型号： | MC34160DWR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | IC REG/SUPERVSRY 5V 100MA 16SOIC |
| 标准包装： | 1 |
| 类型： | 稳压器/监控器 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 电压 - 阀值： | 4.55V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 剪切带 (CT) |
| 其它名称： | MC34160DWR2GOSCT |
MC34160, MC33160
Comparators
Three separate comparators are incorporated for voltage
monitoring. Their outputs can provide diagnostic information
to the microprocessor, preventing system malfunctions.
The Reset Comparator Inverting Input is internally
connected to the 2.6 V reference while the Noninverting
Input monitors V O . The Reset Output is active low when
V O falls approximately 180 mV below its regulated
voltage. To prevent erratic operation when crossing the
comparator threshold, 70 mV of hysteresis is provided.
The Power Warning Comparator is typically used to
detect an impending loss of system power. The Inverting
Input is internally connected to the reference, fixing the
threshold at 2.6 V. The input power source V in is monitored
by the Noninverting Input through the R 1 /R 2 divider
(Figure 11). This input features an adjustable 10 m A to 50
m A current sink I H that is programmed by the value selected
for resistor R H . A default current of 6.5 m A is provided if
R H is omitted. When the comparator input falls below 2.6
V, the current sink is activated. This produces hysteresis if
V in is monitored through a series resistor (R 1 ). The
comparator thresholds are defined as follows:
The Power Warning and Uncommitted Comparators
each have a transistor base ? emitter connected across their
inputs. The base input normally connects to a voltage
reference while the emitter input connects to the voltage to
be monitored. The transistor limits the negative excursion
on the emitter input to ? 0.7 V below the base input by
supply current from V CC . This clamp current will prevent
forward biasing the IC substrate. Zener diodes are
connected to the comparator inputs to enhance the ICs
electrostatic discharge capability. Resistors R 1 and R in
must limit the input current to a maximum of ± 2.0 mA.
Each comparator output consists of an open collector
NPN transistor capable of sinking 2.0 mA with a saturation
voltage less than 0.4 V, and standing off 40 V with minimal
leakage. Internal bias for the Reset and Power Warning
Comparators is derived from either V CC or the regulator
output to ensure functionality when either is below
nominal.
Heat Tab Package
The MC34160 is contained in a 16 lead plastic
dual ? in ? line package in which the die is mounted on a
special Heat Tab copper alloy lead frame. This tab consists
V th(lower) = V ref
1+
R1
R 2
? I IB R 1
of the four center ground pins that are specifically designed
to improve thermal conduction from the die to the
R1 + I H R 1
R 2
V th(upper) = V ref 1+
The nominal hysteresis current I H equals 1.2 V/R H
(Figure 5).
The Uncommitted Comparator can be used to
synchronize the microprocessor with the ac line signal for
timing functions, or for synchronous load switching. It can
also be connected as a line loss detector as shown in
Figure 12. The comparator contains 200 mV of hysteresis
preventing erratic output behavior when crossing the input
threshold.
surrounding air. The pictorial in Figure 9 shows a simple
but effective method of utilizing the printed circuit board
medium as a heat dissipator by soldering these tabs to an
adequate area of copper foil. This permits the use of
standard board layout and mounting practices while having
the ability to more than halve the junction to air thermal
resistance. The example and graph are for a symmetrical
layout on a single sided board with one ounce per square
foot copper.
V CC
+
V in
R 1
C in
14
Thermal
Shutdown
-
+
0.913 R
.01 R
R
+
-
Reset
11
7
C O
V O
MPU Reset
Chip
Disable
15
2.6 V
Reference
+
Power
16
V ref
R 2
9
I H
I H On/Off
-
+
Warning
8
Power Warning
R H
10
AC
Line
2.6 V
R in
2
1
+
+
-
Uncommitted
Comparator
6
Line Sync.
= Positive True Logic
4, 5, 12, 13
+
-
Sink Only
Figure 11. Typical Microprocessor Application
http://onsemi.com
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34160P | 功能描述:线性稳压器 - 标准 5V 100mA REG RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| MC34160PG | 功能描述:线性稳压器 - 标准 5V 100mA REG w/Supervisor RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| MC34161 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Universal Voltage Monitors |
| MC34161_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Universal Voltage Monitors |
| MC34161D | 功能描述:监控电路 Universal Voltage RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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