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參數(shù)資料
| 型號(hào)： | MIC5190BMM TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 6/13頁 |
| 文件大小： | 463K |
| 描述： | IC REG CTRLR SGL POS ADJ 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 正，可調(diào)式 |
| 輸出數(shù)： | 1 |
| 輸出電壓： | 可調(diào) |
| 電流 - 電源： | 15mA |
| 輸入電壓： | 0.9 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC5190BMMTR MIC5190BMMTR-ND |
MIC5190
Micrel
Functional Diagram
Figure 1. MIC5190 Block Diagram
Functional Description
VIN
The VIN pin is connected to the N-Channel drain. VIN is the
input power being supplied to the output. This pin is also used
to power the internal current limit comparator and compare
the ISENSE voltage for current limit. The voltage range is
from 0.9V min to 5.5V max.
ISENSE
The ISENSE pin is the other input to the current limit com-
parator. The output current is limited when the ISENSE pin's
voltage is 50mV less than the VIN pin. In cases where there
is a current limited source and there isnt a need for current
limit, this pin can be tied directly to VIN. Its operating voltage
range, like the VIN pin, is 0.9V min to 5.5V max.
VCC1, VCC2
VCC1 supplies the error amplifier and internal reference,
while VCC2 supplies the output gate drive. For this reason,
ensure these pins have good input capacitor bypassing for
better performance. The operating range is from 4.5V to
13.2V and both VCC pins should be tied together. Ensure that
the voltage supplied is greater than a gate-source threshold
above the output voltage for the N-Channel MOSFET se-
lected.
Output
The output drives the external N-Channel MOSFET and is
powered from V
CC
. The output can sink and source over
150mA of current to drive either an N-Channel MOSFET or an
external NPN transistor. The output drive also has short
circuit current protection.
Enable
The MIC5190 comes with an active-high enable pin that
allows the regulator to be disabled. Forcing the enable pin low
disables the regulator and sends it into a low off-mode-
current state. Forcing the enable pin high enables the output
voltage. The enable pin cannot be left floating; a floating
enable pin may cause an indeterminate state on the output.
FB
The feedback pin is used to sense the output voltage for
regulation. The feedback pin is compared to an internal 0.5V
reference and the output adjusts the gate voltage accordingly
to maintain regulation. Since the feedback biasing current is
typically 13礎(chǔ), smaller feedback resistors should be used to
minimize output voltage error.
COMP
COMP is the external compensation pin. This allows com-
plete control over the loop to allow stability for any type of
output capacitor, load currents and output voltage. A detailed
explanation of how to compensate the MIC5190 is in the
Designing with the MIC5190 section.
SGND, PGND
SGND is the internal signal ground which provides an iso-
lated ground path from the high current output driver. The
signal ground provides the grounding for noise sensitive
circuits such as the current limit comparator, error amplifier
and the internal reference voltage.
PGND is the power ground and is the grounding path for the
output driver.
OUTPUT
CONTROL
AND
LEVEL
SHIFT
CURRENT LIMIT
AMPLIFIER
ERROR
AMPLIFIER
ENABLE
VIN
IS
VCC2
OUT
PGND
FB
0.5V
50mV
SGND
EN
VCC1
COMP
INTERNAL
VOLTAGE
REGULATOR
December 2005
6
M9999-120105
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| MIC5190YML | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Ultra High-Speed, High-Current Active Filter/LDO Controller |
| MIC5190YML TR | 功能描述:低壓差控制器 - LDO Ultra Hi-Speed Hi-Current Active Filter/LDO Controller(Lead Free) RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
| MIC5190YMM | 功能描述:低壓差控制器 - LDO Ultra Hi-Speed Hi-Current Active Filter/LDO Controller(Lead Free) RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
| MIC5190YMM TR | 功能描述:低壓差控制器 - LDO Ultra Hi-Speed Hi-Current Active Filter/LDO Controller(Lead Free) RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
| MIC5191 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Ultra High-Speed, High-Current Active Filter / LDO Controller |
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