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參數(shù)資料
| 型號： | MIC37151-2.5BR |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1.5 A LOW VOLTAGE UCAP LDO REGULATOR |
| 中文描述： | 2.5 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO5 |
| 封裝： | S-PAK-5 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 146K |
| 代理商： | MIC37151-2.5BR |
August 2003
9
MIC37150/37151/37152
MIC37150/37151/37152
Micrel
2.25V, respectively. This gives the PNP-based regulators a
distinct advantage over older, NPN-based linear regulators.
Minimum Load Current
The MIC37150/51/52 regulator is specified between finite
loads. If the output current is too small, leakage currents
dominate and the output voltage rises. A 10mA minimum load
current is necessary for proper operation.
Error Flag
The MIC37151 features an error flag circuit that monitors the
output voltage and signals an error condition when the
voltage 5% below the nominal output voltage. The error flag
is an open-collector output that can sink 10mA during a fault
condition.
Low output voltage can be caused by a number of problems,
including an overcurrent fault (device in current limit) or low
input voltage. The flag is inoperative during overtemperature
shutdown.
Enable Input
The MIC37151/37152 also features an enable input for on/off
control of the device. Its shutdown state draws “zero” current
(only microamperes of leakage). The enable input is TTL/
CMOS compatible for simple logic interface, but can be
connected to up to V
IN
. When enabled, it draws approxi-
mately 15
μ
A.
Adjustable Regulator Design
IN
R1
V
OUT
V
IN
C
OUT
R2
EN
OUT
ADJ
GND
MIC37152
ENABLE
SHUTDOWN
V
1.240V 1
R1
R2
OUT
=
+
Figure 1. Adjustable Regulator with Resistors
The MIC37152 allows programming the output voltage any-
where between 1.24V and the 5.5V maximum operating
rating of the family. Two resistors are used. Resistors can be
quite large, up to 1M
, because of the very high input
impedance and low bias current of the sense comparator:
The resistor values are calculated by:
R1 R2
V
1.240
1
OUT
Where V
OUT
is the desired output voltage. Figure 1 shows
component definition. Applications with widely varying load
currents may scale the resistors to draw the minimum load
current required for proper operation (see above).
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| MIC37150-1.65BR | 1.5 A LOW VOLTAGE UCAP LDO REGULATOR |
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| MIC37151 | FPGA 2000000 SYSTEM GATE 1.8 VOLT - NOT RECOMMENDED for NEW DESIGN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MIC37151-3.3BR | 功能描述:IC REG LDO 3.3V 1.5A SPAK-5 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)壓器拓撲結構: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 |
| MIC37151-3.3BR TR | 功能描述:IC REG LDO 3.3V 1.5A SPAK-5 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)壓器拓撲結構: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 |
| MIC37151-3.3WR | 功能描述:低壓差穩(wěn)壓器 - LDO LV, 1.5A uCap LDO in Spak(ROHS Compliant) 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(diào)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 |
| MIC37151-3.3WR TR | 功能描述:低壓差穩(wěn)壓器 - LDO LV, 1.5A uCap LDO in Spak(ROHS Compliant) 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(diào)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 |
| MIC37152 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.5 A LOW VOLTAGE UCAP LDO REGULATOR |
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