Datasheet > GE2138-19

GE2138-19

更新时间： 2022-02-26 11:33:13

品牌	Logo	应用领域
ETL		/
页数	文件大小	规格书
5页	424K
描述
1 . 5 A C M O S L o w D r o p o u t V o l t a g e R e g u l a t o r

阅读下载

获取价格

如果您发现信息不准确，欢迎纠错

GE2138-19 数据手册

ISSUED DATE :2006/04/14

REVISED DATE :

GTM

CORPORATION

Detailed Description

The GE2138 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

150к, or the current exceeds 2.2A. During thermal shutdown, the output voltage remains low. Normal

operation is restored when the junction temperature drops below 120к.

The GE2138 behaves like a current source when the load reaches 2.2A. However, if the load impedance drops

below 0.3ꢂ, the current drops back to 600mA to prevent excessive power dissipation. Normal operation is

restored when the load resistance exceeds 0.75ꢂ.

External Capacitors

The GE2138 is stable with an output capacitance to ground of 4.7ꢀF 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 0.1ꢀF ceramic capacitor with a 10ꢀF 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 0.1ꢀF 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.

Characteristics Curve

GE2138

Page: 3/5

1 234 5

下载PDF

型号	品牌	描述	获取价格	数据表
GE2138-33	ETL	1 . 5 A C M O S L o w D r o p o u t V o l t a g e R e g u l a t o r	获取价格
GE2138-50	ETL	1 . 5 A C M O S L o w D r o p o u t V o l t a g e R e g u l a t o r	获取价格
GE2148	GTM	1.5A LOW DROPOUT VOLTAGE REGULATOR	获取价格
GE24	MEANWELL	15~24WAC-DC Single Output Interchangeable Wall-mounted type	获取价格
GE2405-P1J	MEANWELL	15~24WAC-DC Single Output Interchangeable Wall-mounted type	获取价格
GE2407-P1J	MEANWELL	15~24WAC-DC Single Output Interchangeable Wall-mounted type	获取价格