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參數(shù)資料
| 型號(hào)： | GSC2127 |
| 廠商： | GTM CORPORATION |
| 元件分類： | 線性穩(wěn)壓 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 785K |
| 代理商： | GSC2127 |
GSC2127
Page: 3/6
ISSUED DATE :2006/02/24
REVISED DATE :
Ordering Information ( contd. )
Part Number
Marking
Output Voltage
Part Number
Marking
Output Voltage
GSC2127-15
7B152
XXXX
1.5V
GSC2127-18
7B182
XXXX
1.8V
GSC2127-25
7B252
XXXX
2.5V
GSC2127-33
7B332
XXXX
3.3V
Detailed Description
The GSC2127 series of COMS regulators contain a PMOS pass transistor, voltage reference, error amplifier,
over-current protection, and thermal shutdown.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal
protection circuits. During normal operation, the error amplifier compares the output voltage to a precision
reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds
140 : , or the current exceeds 2.2A. During thermal shutdown, the output voltage remains low. Normal
operation is restored when the junction temperature drops below 120 : .
The GSC2127 behaves like a current source when the load reaches 2.2A. However, if the load impedance
drops below 0.3ohms, the current drops back to 600mA to prevent excessive power dissipation. Normal
operation is restored when the load resistance exceeds 0.75ohms.
External Capacitors
The GSC2127 is stable with an output capacitance to ground of 4.7 F or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the
highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are
comparatively expensive. One option is to parallel a 0.1 F ceramic capacitor with a 10 F Aluminum Electrolytic.
The benefit is low ESR, high capacitance, and low overall cost.
A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be at least 0.1 F to have a beneficial effect.
All capacitors should be placed in close proximity to the pins. A “Quiet” ground termination is desirable. This
can be achieved with a “Star” connection.
Enable
When EN pin is pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In
this state, the quiescent current is less than 2 A. This pin behaves much like an electronic switch.
100K resistor is necessary between VEN source and EN pin when VEN is high than VIN.
(Note: There is no internal pull-up for EN pin. It can not be floating.)
Power Good
The GSC2127 includes the Power Good feature. When the output is not within D15% of the specified voltage,
it pulls low. This can occur under the following conditions:
1) Input Voltage too low.
2) During Over-Temperature.
3) During Over-Current.
4) If output is pulled up.
(Note: PG pin is an open-drain output.)
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相關(guān)代理商/技術(shù)參數(shù) |
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| GSC2128 | 制造商:GTM 制造商全稱:GTM 功能描述:CMOS LOW DROPOUT VOLTAGE REGULATOR |
| GSC2129 | 制造商:GTM 制造商全稱:GTM 功能描述:CMOS LOW DROPOUT VOLTAGE REGULATOR |
| GSC2138 | 制造商:GTM 制造商全稱:GTM 功能描述:1.5A CMOS LOW DROPOUT VOLTAGE REGULATOR |
| GSC2139 | 制造商:GTM 制造商全稱:GTM 功能描述:1.5A CMOS LOW DROPOUT VOLTAGE REGULATOR |
| GSC2146 | 制造商:GTM 制造商全稱:GTM 功能描述:600mA CMOS POSITIVE VOLTAGE REGULATOR |
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