- 您现在的位置：买卖IC网 > PDF目录1844 > MAX6331TUR-T (Maxim Integrated Products)IC VREF SHUNT PREC 3.3V SOT-23-3 PDF资料下载
参数资料
| 型号： | MAX6331TUR-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC 3.3V SOT-23-3 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 基准类型： | 旁路，精度 |
| 输出电压： | 3.3V |
| 容差： | ±1.5% |
| 输入电压： | 3 V ~ 200 V |
| 通道数： | 1 |
| 电流 - 阴极： | 100µA |
| 电流 - 输出： | 50mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23-3 |
| 包装： | 带卷 (TR) |
Precision Shunt Regulators with Reset
in SOT23-3
capacitor allows a sharper drop in V SHUNT when the
load transient occurs, and will suffer from a steeper
overshoot when the device re-enters regulation. On the
other hand, the increased compensation on a larger
bypass capacitor will lead to a longer recovery time to
regulation. The Typical Operating Characteristics graph
Overshoot vs. Bypass Capacitance (C L ) illustrates this
trade-off.
If the compensation of the bypass capacitor chosen is
insufficient, the output (V SHUNT ) can oscillate. Before
choosing a bypass capacitor for the desired shunt cur-
rent, observe the stability boundary conditions indicated
in the Typical Operating Characteristics . The minimum
output capacitance is 0.03μF to ensure stability over the
full load-current range.
Adding Hysteresis
In certain circumstances, the MAX6330 can be trapped
in a state that forces it to enter into and exit from a reset
condition indefinitely. This usually occurs in systems
where V SHUNT is just below the device’s trip threshold
and the system draws less quiescent current under reset
conditions than when operating out of reset. The differ-
ence in supply current when the device is in or out of
reset can translate to a significant change in the voltage
drop across R S , which the MAX6330’s built-in hysteresis
may not overcome. A 100k ? pull-up resistor will over-
come this condition and add hysteresis (Figure 5).
R S
Note that adding this pull-up resistor to the MAX6330 will
render RESET invalid with V SHUNT < 1V, since this output
loses sinking capability at this point, and the pull-up resis-
tor would invalidate the signal. This does not present a
problem in most applications, since most μPs and other
circuitry are inoperative when V SHUNT is below 1V.
Interfacing to μPs with
Bidirectional Reset Pins
Microprocessors with bidirectional reset pins (such as
the Motorola 68HC11 series) can contend with
MAX6330’s reset output. If, for example, the MAX6330’s
RESET output is asserted high and the μP wants to pull
it low, indeterminate logic levels may result. To correct
this, connect a 4.7k ? resistor between the RESET out-
put and the μP reset I/O (Figure 6). Buffer the RESET
output to other system components. Also, R S must be
sized to compensate for additional current drawn by
the μP during the fault condition.
Shunt Current Effects
on V SHUNT and V TH
When sinking large shunt currents, power dissipation
heats the die to temperatures greater than ambient.
This may cause the V SHUNT and V TH tolerances to
approach ±3% at high ambient temperatures and high
shunt currents. Limit the die temperature to less than
+150°C using Θ JA = 0.25°C/mW.
___________________Chip Information
TRANSISTOR COUNT: 283
TO OTHER SYSTEM
V IN
R S
V SHUNT
COMPONENTS
SHUNT
MAX6330
C L
R HYST
100k
V CC
μ P
V IN
SHUNT
C L
V CC
RESET
RESET
INPUT
MAX6330
MAX6331
4.7k
μ P
RESET
(RESET)
GND
GND
GND
( ) ARE FOR MAX6331
GND
Figure 5. Adding Hysteresis to the MAX6330
Figure 6. Interfacing to μPs with Bidirectional Reset I/O
_______________________________________________________________________________________
7
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6334UR18D3-T | IC MPU LV 1.80V 100MS SOT23-3 |
| MAX6336US23D3-T | IC MPU/RESET CIRC 2.3V SOT143-4 |
| MAX6338IUB | IC VOLT MONITOR QUAD 10-UMAX |
| MAX6339GUT+T | IC SUPERVISOR MPU QUAD SOT23-6 |
| MAX6344MUT+T | IC RESET MPU W/COMP SOT23-6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6332_V3 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3-Pin, Ultra-Low-Voltage, Low-Power ??P Reset Circuits |
| MAX6332UR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3-Pin, Ultra-Low-Voltage, Low-Power uP Reset Circuits |
| MAX6332UR16D1 | 制造商:Maxim Integrated Products 功能描述:3-PIN ULTRA-LOW-VOLTAGE LOW-POWER - Rail/Tube |
| MAX6332UR16D1+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.6V 3.3UA 3PIN SOT-23 - Rail/Tube |
| MAX6332UR16D1+T | 功能描述:监控电路 3-Pin uPower Reset Circuit 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 |
发布紧急采购，3分钟左右您将得到回复。