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): 5/12頁
文件大?。?/td> 170K
代理商: MIC2954
August 1999
5
MIC2954
MIC2954
Micrel
Note 11.
The MIC2954 features fold-back current limiting. The short circuit (V
OUT
= 0V) current limit is less than the maximum current with normal
output voltage.
Note 12.
Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 200mA load pulse at V
IN
= 20V (a 4W pulse) for t = 10ms.
Note 13.
V
REF
V
OUT
(V
IN
– 1V), 2.3V
V
IN
30V, 100
μ
A < I
L
250 mA, T
J
T
J(max).
Note 14.
Comparator thresholds are expressed in terms of a voltage differential at the FB pin below the nominal reference voltage measured at 6V
input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
/V
REF
= (R1 + R2)/R2. For
example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by
95mV
×
5V/1.235V = 384mV. Thresholds remain constant as a percent of V
OUT
as V
OUT
is varied, with the dropout warning occurring at
typically 5% below nominal, 7.5% guaranteed.
Note 15.
V
SHDN
2V, V
IN
30 V,V
OUT
= 0, with the FB pin connected to TAP.
Note 16.
When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to
ground.
Note 17.
Maximum positive supply voltage of 60V must be of limited duration (<10ms) and duty cycle (<1%). The maximum continuous supply voltage
is 30V.
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?。?- 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(yīng)商設(shè)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(yīng)商設(shè)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(yīng)商設(shè)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(yīng)商設(shè)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(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND