Datasheet > GM1112TA3R

GM1112TA3R

更新时间： 2022-12-18 02:32:51

品牌	Logo	应用领域
GAMMA		/
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描述
1A LOW DROPOUT PRECISION VOLTAGE REGULATOR

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GM1112TA3R 数据手册

GM1112

1A LOW DROPOUT

PRECISION VOLTAGE REGULATOR

Application Information

Stability Considerations

A capacitor of 10uF as a minimum is suggested to be connected in the input terminal and to be as

close as to the input source for better stability consideration. See typical application circuit page 1 for

reference.

The output compensation capacitor helps to determine three main characteristics of a linear

regulator's performance: start-up delay, load transient response, and loop stability. The capacitor

value and type is based on cost, availability, size and temperature constraints. A tantalum or aluminum

electrolytic capacitor is preferred, as a film or ceramic capacitor with almost zero ESR can cause

instability. An aluminum electrolytic capacitor is the least expensive type, but when the circuit operates

at low temperatures, both the value and ESR of the capacitor will vary widely. For optimum

performance over the full operating temperature range, a tantalum capacitor is best. A 22µF tantalum

capacitor will work fine in most applications, but with high current regulators such as the GM1112,

higher capacitance values will improve the transient response and stability. Most applications for the

GM1112 involve large changes in load current, so the output capacitor must supply instantaneous load

current. The ESR of the output capacitor causes an immediate drop in output voltage given by:

△V = △I X ESR

In microprocessor applications an output capacitor network of several tantalum and ceramic capacitors

in parallel is commonly used. This reduces overall ESR and minimizes the instantaneous output

voltage drop under transient load conditions. The output capacitor network should be placed as close

to the load as possible for the best results.

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型号	品牌	描述	获取价格	数据表
GM1112TA3T	GAMMA	1A LOW DROPOUT PRECISION VOLTAGE REGULATOR	获取价格
GM1112TB3T	GAMMA	1A LOW DROPOUT PRECISION VOLTAGE REGULATOR	获取价格
GM1112TC3R	GAMMA	1A LOW DROPOUT PRECISION VOLTAGE REGULATOR	获取价格
GM1112TC3T	GAMMA	1A LOW DROPOUT PRECISION VOLTAGE REGULATOR	获取价格
GM1116	GTM	0.6A Low Dropout Positive Adjustable or Fixed-Mode Regulator	获取价格
GM1117	GAMMA	Adjustable Shunt Regulators	获取价格