Datasheet > AAT3258ITS-2.8-R-T1

AAT3258ITS-2.8-R-T1

更新时间： 2024-02-03 19:39:54

品牌	Logo	应用领域
ANALOGICTECH		稳压器
页数	文件大小	规格书
17页	252K
描述
300mA LDO Linear Regulator with UP Reset

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AAT3258ITS-2.8-R-T1 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSOPJW-8	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.83	可调性：	FIXED
最大回动电压 1：	0.6 V	标称回动电压 1：	0.4 V
最大绝对输入电压：	6 V	最大输入电压：	5.5 V
最小输入电压：	3.47 V	JESD-30 代码：	R-PDSO-J8
长度：	3.025 mm	最大电网调整率：	0.003024%
功能数量：	1	输出次数：	1
端子数量：	8	工作温度TJ-Max：	150 °C
工作温度TJ-Min：	-40 °C	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电压 1：	2.87 V
最小输出电压 1：	2.73 V	标称输出电压 1：	2.8 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSOJ
封装等效代码：	TSSOJ8,.11	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE	包装方法：	TR
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	座面最大高度：	1.0175 mm
表面贴装：	YES	端子形式：	J BEND
端子节距：	0.65 mm	端子位置：	DUAL
最大电压容差：	2.5%	宽度：	2.4 mm

AAT3258ITS-2.8-R-T1 数据手册

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AAT3258

300mA LDO Linear Regulator with µP Reset

The microprocessor reset section monitors the supply

asserted for a minimum of 150ms after V_DEThas risen

above the threshold, as shown in Figure 1.

voltage to a microprocessor and asserts a reset sig-

nal whenever the V_DETvoltage falls below a factory-

programmed threshold. This threshold is accurate

within +/-1.5% at 25°C. The reset signal remains

To assure the maximum possible performance is

obtained from the AAT3258, please refer to the fol-

lowing application recommendations.

V_TH

V_DET

t_RDY

RESET

Figure 1: Reset Signal Assertion.

Output Capacitor

LDO Regulator Applications

For proper load voltage regulation and operational

stability, a capacitor is required between pins V_OUT

and GND. The C_OUTcapacitor connection to

the LDO regulator ground pin should be made as

direct as practically possible for maximum device

performance.

Input Capacitor

Typically, a 1µF or larger capacitor is recommend-

ed for C_INin most applications. A C_INcapacitor is

not required for basic LDO regulator operation.

However, if the AAT3258 is physically located more

than three centimeters from an input power source,

a C_INcapacitor will be needed for stable operation.

C_INshould be located as closely to the device V_IN

pin as practically possible. C_INvalues greater than

1µF will offer superior input line transient response

and will assist in maximizing the highest possible

power supply ripple rejection.

The AAT3258 has been specifically designed to func-

tion with very low ESR ceramic capacitors. For best

performance, ceramic capacitors are recommended.

Typical output capacitor values for maximum output

current conditions range from 1µF to 10µF.

Applications utilizing the exceptionally low output

noise and optimum power supply ripple rejection

characteristics of the AAT3258 should use 2.2µF or

greater for C_OUT. If desired, C_OUTmay be increased

without limit.

Ceramic, tantalum, or aluminum electrolytic capaci-

tors may be selected for C_IN. There is no specific

capacitor ESR requirement for C_IN. However, for

300mA LDO regulator output operation, ceramic

capacitors are recommended for C_INdue to their

inherent capability over tantalum capacitors to with-

stand input current surges from low impedance

sources such as batteries in portable devices.

In low output current applications where output

load is less than 10mA, the minimum value for

C_OUTcan be as low as 0.47µF.

3258.2005.04.1.5

1...8 9 101112 13 14...17

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