Datasheet > AAT3201IGV-2.0-T1

AAT3201IGV-2.0-T1

更新时间： 2024-01-31 06:12:35

品牌	Logo	应用领域
ANALOGICTECH		稳压器
页数	文件大小	规格书
14页	212K
描述
150mA OmniPower LDO Linear Regulator

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AAT3201IGV-2.0-T1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.84	湿度敏感等级：	3
Base Number Matches：	1

AAT3201IGV-2.0-T1 数据手册

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AAT3201

150mA OmniPower™ LDO Linear Regulator

The power dissipation for a 100mA load occurring

Printed Circuit Board Layout

Recommendations

for 91.8% of the duty cycle will be 229.5mW. Now

the power dissipation for the remaining 8.2% of the

duty cycle at the 150mA load can be calculated:

In order to obtain the maximum performance from

the AAT3201 LDO regulator, very careful attention

must be considered in regard to the printed circuit

board layout. If grounding connections are not prop-

erly made, power supply ripple rejection and LDO

regulator transient response can be compromised.

_D(MAX)= (V_IN- V_OUT)I_OUT+ (V_INx I_GND)

P_D(150mA)= (5.0V - 2.5V)150mA + (5.0V x 20µA)

P_D(150mA)= 375mW

P_D(8.2%D/C)= %DC x P_D(150mA)

P_D(8.2%D/C)= 0.082 x 375mW

P_D(8.2%D/C)= 30.75mW

The LDO Regulator external capacitors C_INand

C_OUTshould be connected as directly as possible

to the ground pin of the LDO Regulator. For maxi-

mum performance with the AAT3201, the ground

pin connection should then be made directly back

to the ground or common of the source power sup-

ply. If a direct ground return path is not possible

due to printed circuit board layout limitations, the

LDO ground pin should then be connected to the

common ground plane in the application layout.

The power dissipation for a 150mA load occurring

for 8.2% of the duty cycle will be 20.9mW. Finally,

the two power dissipation levels can summed to

determine the total true power dissipation under the

varied load.

_D(total)= P_D(100mA)+ P_D(150mA)

P_D(total)= 229.5mW + 30.75mW

P_D(total)= 260.25mW

The maximum power dissipation for the AAT3201

operating at an ambient temperature of 85°C is

267mW. The device in this example will have a total

power dissipation of 260.25mW. This is within the

thermal limits for safe operation of the device.

3201.2002.3.0.91

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