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| 型号： | MAX6791TPVD4+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/24页 |
| 文件大小： | 0K |
| 描述： | IC REG LIN W/SPR VSR 20-TQFN |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 稳压器/监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 1.575V，可调 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 管件 |
High-Voltage, Micropower, Single/Dual Linear
Regulators with Supervisory Functions
Applications Information
Output Voltage Selection
The MAX6791–MAX6796 feature dual-mode operation:
these devices operate in either a preset voltage mode
or an adjustable mode. In preset voltage mode, internal
trimmed feedback resistors set the internal linear regula-
Selecting Reset Timeout Period
The reset timeout period is adjustable to accommodate
a variety of μP applications. Adjust the reset timeout
period by connecting a capacitor between CSRT and
GND. Use the following formula to set the reset timeout
period:
t RP = C CSRT ? 1 . 218 × 10 6
?
tor to +1.8V, +2.5V, +3.3V, or +5V (see the Selector
Guide). Select preset voltage mode by connecting SET1
(MAX6791 –MAX6794)/SET(MAX6795/MAX6796) to
?
?
V ?
A ?
V OUT SET ? 1 +
= V
?
GND. In adjustable mode, select an output voltage
between +1.8V and +11V using two external resistors
connected as a voltage-divider to SET1/SET (see Figure
1). Set the output voltage using the following equation:
? R 1 ?
? R 2 ?
where V SET = 1.2315V and R1, R2 ≤ 200k ? .
Available Output-Current Calculation
The MAX6791–MAX6794 provide up to 150mA per out-
put, and the MAX6795/MAX6796 provide up to 300mA
of load current. Since the input voltage can be as high
where t RP is in seconds and C CSRT is in Farads.
Connect CSRT to OUT1 (MAX6791–MAX6794) or to
OUT (MAX6795/MAX6796) to select an internally fixed
timeout period. Connect CSRT to GND to force RESET
low. C CSRT must be a low-leakage (< 10nA) type
capacitor. Ceramic capacitors are recommended; do
not use capacitors lower than 100pF to avoid the influ-
ence of parasitic capacitances.
V IN
as +72V, package power dissipation limits the amount
of output current available for a given input/output volt-
age and ambient temperature. Figure 2 shows the max-
IN
OUT1/OUT
imum power-dissipation curve for the MAX6791 –
MAX6796. The graph assumes that the exposed metal
MAX6791–MAX6796
R1
pad of the device package is soldered to a solid 1in 2
section of PC board copper. Use Figure 2 to determine
the allowable package dissipation for a given ambient
temperature. Alternately, use the following formula to
calculate the allowable package dissipation:
PD MAX = Maximum Power Dissipation
PD MAX = 2.666W, for T A ≤ +70°C
PD MAX = [2.666W - 0.0333W x (T A - 70°C)], for +70°C
< T A ≤ +125°C
SET1/SET
R2
GND
Figure 1. Setting the Output Voltage Using a Resistive-Divider
I OUT vs. (V IN - V OUT )
where 0.0333W is the MAX6791–MAX6796 package
thermal derating in W/°C and T A is the ambient temper-
ature in °C.
After determining the allowable package dissipation,
calculate the maximum output current using the follow-
ing formula:
PD = Power Dissipation
PD < PD MAX where PD = [(IN - OUT1) x I OUT1 ] + [(IN -
350
300
250
200
150
100
V OUT = 1.8V
+70 ° C SAFE OPERATION REGION FOR
EACH TEMPERATURE POINT IS
UNDER THE CURVE
+85 ° C
+125 ° C
OUT2) x I OUT2 ], for MAX6791–MAX6794.
Also, I OUT1 should be ≤ 150mA and I OUT2 should be
≤ 150mA in any case.
50
0
0
10
20
30
40
50
60
70 75
PD < PD MAX where PD = [(IN - OUT) x I OUT ], for
MAX6795/MAX6796.
Also, I OUT should be ≤ 300mA in any case.
(V IN - V OUT ) (V)
Figure 2. Maximum Power Dissipation for MAX6791–MAX6796
______________________________________________________________________________________
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6791TPVD4+ | 功能描述:线性稳压器 - 标准 Dual uPower Linear 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 |
| MAX6791TPVD4+T | 功能描述:线性稳压器 - 标准 Dual uPower Linear 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 |
| MAX6791TPWD0+ | 功能描述:线性稳压器 - 标准 Dual uPower Linear 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 |
| MAX6791TPWD0+T | 功能描述:线性稳压器 - 标准 Dual uPower Linear 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 |
| MAX6791TPWD1+ | 功能描述:线性稳压器 - 标准 Dual uPower Linear 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 |
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