參數(shù)資料
型號： MIC2954
廠商： Micrel Semiconductor,Inc.
英文描述： 250mA Low-Dropout Regulator
中文描述： 250mA的低壓差穩(wěn)壓器
文件頁數(shù)： 4/12頁
文件大?。?/td> 170K
代理商： MIC2954
MIC2954
Micrel
MIC2954
4
August 1999
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
/
P
D
e
n
Thermal Regulation,
Note 12
0.05
0.2
%/W
Output Noise Voltage
(10Hz to 100kHz)
I
L
= 100mA, C
L
= 2.2
μ
F
I
L
= 100mA, C
L
= 33
μ
F
MIC2954-02/-07 (
±
0.5%)
400
μ
V(rms)
260
μ
V(rms)
Reference Voltage
1.220
1.200
1.235
1.250
1.260
V
V
MIC2954-03/-08 (
±
1%)
1.210
1.200
1.235
1.260
1.270
V
V
Reference Voltage
MIC2954-02/-07 (
±
0.5%),
Note 13
1.190
1.270
V
MIC2954-03/-08 (
±
1%),
Note 13
1.185
1.285
V
Feedback Pin Bias Current
20
40
60
nA
nA
Reference Voltage
Temperature Coefficient,
Note 12
MIC2954-02/-07 (
±
0.5%)
20
ppm/
°
C
MIC2954-03/-08 (
±
1%)
50
ppm/
°
C
Feedback Pin Bias Current
Temperature Coefficient
0.1
40
nA/
°
C
Error Comparator
Output Leakage Current
V
OH
= 30V
0.01
1.00
2.00
μ
A
μ
A
Output Low Voltage
V
IN
= 4.5V, I
OL
= 400
μ
A
150
250
400
mV
mV
Upper Threshold Voltage
Note 14
60
40
25
mV
mV
Lower Threshold Voltage
Note 14
75
95
140
mV
mV
Hysteresis
Note 14
15
mV
Shutdown Input
Input Logic Voltage
low (on)
1.3
0.7
V
high (off)
2.0
V
Shutdown Pin Input Current
V
SHDN
= 2.4V
30
50
100
μ
A
μ
A
V
SHDN
= 30V
450
600
750
μ
A
μ
A
Regular Output Current in
Shutdown
Note 15
3
10
20
μ
A
μ
A
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
P
D(max)
= (T
J(max)
– T
A
)
÷ θ
JC
. Exceeding T
J(max)
will cause thermal shutdown.
Thermal resistance (
θ
) of the TO-220 package is 2.5
°
C/W, and 15
°
C/W for the SOT-223. Thermal resistance (
θ
) of the TO-92 package is
180
°
C/W with 0.4" leads and 160
°
C/W with 0.25" leads. Thermal resistance (
θ
JA
) of the SOP-8 is 160
°
C/W mounted on a printed circuit board
(See “Application Information: Thermal Calculation”).
Output voltage temperature coefficient is defined as the worst case voltage change divide by the total temperature range.
Line regulation for the MIC2954 is tested at 125
°
C for I
= 1mA. For I
= 100
μ
A and T
= 125
°
C, line regulation is guaranteed by design to
0.2%. See “Typical Characteristics” for line regulation versus temperature and load current.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects
are covered by the thermal regulation specification.
Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V
differential. At very low values of programmed output voltage, the minimum input supply voltage of 2 V (2.3V over temperature) must be taken
into account.
Note 10.
Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground
pin current.
Note 6.
Note 7.
Note 8.
Note 9.
相關(guān)PDF資料
PDF描述
MIC2954-02BT 250mA Low-Dropout Regulator
MIC2954-02BZ 250mA Low-Dropout Regulator
MIC2954-03BS 250mA Low-Dropout Regulator
MIC2954-03BT 250mA Low-Dropout Regulator
MIC2954-03BZ 250mA Low-Dropout Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC2954-02BS 功能描述:IC REG LDO 5V .25A SOT223 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND
MIC2954-02BS TR 功能描述:IC REG LDO 5V .25A SOT-223 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND
MIC2954-02BT 功能描述:IC REG LDO 5V .25A TO220-3 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND
MIC2954-02BZ 功能描述:IC REG LDO 5V .25A TO92-3 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND
MIC2954-02BZ TR 功能描述:IC REG LDO 5V .25A TO92-3 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND
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