參數(shù)資料
型號： MAX882CSA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 基準電壓源/電流源
英文描述： 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators
中文描述： FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.64 V DROPOUT, PDSO8
封裝： 0.150 INCH, MS-012AA, SOIC-8
文件頁數(shù)： 9/16頁
文件大小： 136K
代理商： MAX882CSA
M
5V /3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
_______________________________________________________________________________________
9
Foldbac k 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
ground for 1 minute 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
and (V
IN
- V
OUT
) < 0.7V (dropout operation), no current
limiting is allowed, to provide maximum load drive.
T hermal Overload Protec tion
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.
Power Dissipation and Operating Region
Maximum power dissipation of the MAX882/MAX883/
MAX884 depends on the thermal resistance of the case
and circuit 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:
(T
T )
(
J B
+
θ
θ
where (T
J
- T
A
) is the temperature difference between
the MAX882/MAX883/MAX884 die junction and the sur-
rounding air,
θ
J B
(or
θ
J C
) is the thermal resistance of
the package chosen, and
θ
BA
is the thermal resistance
through the printed circuit board, copper traces, and
other materials 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
J B
= 53°C/W, compared with
θ
J B
= 110°C/W for an
8-pin plastic DIP package and
θ
J B
= 125°C/W for an 8-
pin ceramic DIP package.
P
)
J
BA
=
Figure 2. Adjustable Output Using External Feedback
Resistors
Figure 3. Setting an Undervoltage Lockout Threshold Using
STBY
MAX882
MAX883
MAX884
C
IN
O.1
μ
F
C
OUT
2.2
μ
F
OUTPUT
VOLTAGE
INPUT
VOLTAGE
LBI
OFF
(STBY)
( ) ARE FOR MAX882
IN
R1
R2
R1 + R2
R2
V
OUT
= V
SET
, V
SET
= 1.20V
LOAD
OUT
GND
SET
MAX882
C
IN
O.1
μ
F
C
OUT
2.2
μ
F
OUTPUT
VOLTAGE
INPUT
VOLTAGE
LBI
SET
STBY
IN
R1
R2
R1+ R2
R2
V
STBY TRIP
= V
STBY
, V
STBY
= 1.20V
OUT
GND
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相關代理商/技術參數(shù)
參數(shù)描述
MAX882CSA+ 功能描述:低壓差穩(wěn)壓器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
MAX882CSA+T 功能描述:低壓差穩(wěn)壓器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
MAX882CSA-T 功能描述:低壓差穩(wěn)壓器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
MAX882CSA-TG074 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX882EPA 功能描述:低壓差穩(wěn)壓器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
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