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| 型号： | MAX882ESA |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/17页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/ADJ .2A 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 3.3V，1.25 V ~ 11 V |
| 输入电压： | 2.9 V ~ 11.5 V |
| 电压 - 压降（标准）： | 0.32V @ 200mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 200mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
5V/3.3V or Adjustable, Low-Dropout,
Low I Q , 200mA Linear Regulators
INPUT
VOLTAGE
IN
OUT
OUTPUT
VOLTAGE
INPUT
IN
OUT
OUTPUT
LBI
VOLTAGE
LBI
VOLTAGE
MAX882
OFF
(STBY) MAX883
SET
R1
LOAD
R1
STBY
MAX882
C IN
O.1 μ F
MAX884
GND
R2
C OUT
2.2 μ F
C IN
O.1 μ F
R2
GND
SET
C OUT
2.2 μ F
V OUT = V SET , V SET = 1.20V
( ) ARE FOR MAX882.
R1 + R2
R2
V STBY TRIP = V STBY
R1+ R2
R2
, V STBY = 1.20V
Figure 2. Adjustable Output Using External Feedback
Resistors
Foldback Current Limiting
The MAX882/MAX883/MAX884 also include a foldback
current limiter. It monitors and controls the pass transis-
tor’s gate voltage, estimating the output current and
limiting it to 430mA for output voltages above 0.8V and
(V IN - V OUT ) > 0.7V. If the output voltage drops below
0.8V, implying a short-circuit condition, the output cur-
rent is limited to 170mA. The output can be shorted to
Figure 3. Setting an Undervoltage Lockout Threshold Using
STBY
Power Dissipation and Operating Region
Maximum power dissipation of the MAX882/MAX883/
MAX884 depends on the thermal resistance of the case
and PC board, the temperature difference between the
die junction and ambient air, and the rate of
air flow. The power dissipation across the device is
P = I OUT (V IN - V OUT ). The resulting power dissipation
is as follows:
ground for 1min without damaging the device if the
package can dissipate (V IN x 170mA) without exceed-
ing T J = +150°C. When the output is greater than 0.8V
P =
(T J ? T A )
( θ JB + θ BA )
and (V IN - V OUT ) < 0.7V (dropout operation), no current
limiting is allowed, to provide maximum load drive.
Thermal Overload Protection
Thermal overload protection limits total power dissipa-
tion in the MAX882/MAX883/MAX884. When the junc-
tion temperature exceeds T J = +160°C, the thermal
sensor sends a signal to the shutdown logic, turning off
the pass transistor and allowing the IC to cool. The
thermal sensor turns the pass transistor on again after
the IC’s junction temperature cools by 10°C, resulting in
a pulsed output during thermal overload conditions.
Thermal overload protection is designed to protect the
MAX882/MAX883/MAX884 if fault conditions occur. It is
not intended to be used as an operating mode.
Prolonged operation in thermal-shutdown mode may
reduce the IC’s reliability. For continual operation, do
not exceed the absolute maximum junction temperature
rating of T J = +150°C.
where (T J - T A ) is the temperature difference between
the MAX882/MAX883/MAX884 die junction and the sur-
rounding air, θ JB (or θ JC ) is the thermal resistance of
the package chosen, and θ BA is the thermal resistance
through the PC board, copper traces, and other materi-
als to the surrounding air.
The 8-pin small-outline package for the MAX882/
MAX883/MAX884 features a special lead frame with a
lower thermal resistance and higher allowable power
dissipation. This package’s thermal resistance package
is θ JB = 53°C/W, compared with θ JB = 110°C/W for an
8-pin plastic DIP package and θ JB = 125°C/W for an 8-
pin ceramic DIP package.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX882ESA/GH9 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX882ESA/GH9-T | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX882ESA+ | 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX882ESA+T | 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX882ESA-T | 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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