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AME1505ACBV250

更新时间： 2024-01-08 12:59:46

品牌	Logo	应用领域
安茂微 - AME		/
页数	文件大小	规格书
12页	69K
描述
High Power BiPolar Linear LDO

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AME1505ACBV250 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.59
Base Number Matches：	1

AME1505ACBV250 数据手册

AME, Inc.

High Power BiPolar Linear LDO

AME1505

n Application Description

1. Output voltage adjustment

3. Stability and load regulation

AME1505 requires a capacitor from V

provide compensation feedback to the internal gain stage.

This is to ensure stability at the output terminal. Typi-

cally, a 10mF tantalum or 50mF aluminum electrolytic is

sufficient.

to GND to

Like most regulators, the AME1505 regulates the out-

put by comparing the output voltage to an internally gen-

erated reference voltage. On the adjustable version, the

V_REFis available externally as 1.25V between V_OUTand

ADJ. The voltage ratio formed by R1 and R2 should be

set to conduct 10mA (minimum output load). The output

voltage is given by the following equation:

OUT

(Note: It is important that the ESR for this capacitor does not ex-

ceed 0.5W.)

V_OUT= V_REF( 1 +

) + I_ADJx R2

The output capacitor dose not have a theoretical upper

limit and increasing its value will increase stability. C_OUT

= 100mF or more is typical for high current regulator de-

sign.

On fixed versions of AME1505, the voltage divider is

factory-preset internally.

2. Current limit protection

For the adjustable version, the best load regulation is

accomplished when the top of the resistor divider (R1) is

connected directly to the output pin of the AME1505.

AME1505 is protected against overload conditions. Cur-

rent protection is triggered at typical 7.5A.

When so connected, R is not multiplied by the divider

ratio.

For fixed output versions, the top of R1 is internally

connected to the output. The ground pin can be connected

to low side of the load to eliminate ground loop errors.

V_CONTROL

V_POWER

V_IN

OUT

V_OUT

SENSE

ADJ

R_P

V_CONTROL

V_REF

C₁

Parasitic

Line Resistance

V_CONTROL

V_POWER

OUT

I_ADJ

V_POWER

SENSE

ADJ

(Connect R1 to case)

R_L

) + I_ADJx R2

V_OUT= V_REF(1+

Connect

R2 to load

1...3 4 567 8 9...12

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