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AAT1146IJS-0.6-T1

更新时间： 2024-01-06 12:52:53

品牌	Logo	应用领域
ANALOGICTECH		转换器稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
20页	768K
描述
Fast Transient 400mA Step-Down Converter

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技术参数
数据手册

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AAT1146IJS-0.6-T1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	TSOJ, TSSOJ8,.09,20	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.75	Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
JESD-30 代码：	R-PDSO-J8	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.4 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSOJ	封装等效代码：	TSSOJ8,.09,20
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	YES	最大切换频率：	2000 kHz
温度等级：	INDUSTRIAL	端子形式：	J BEND
端子节距：	0.5 mm	端子位置：	DUAL
Base Number Matches：	1

AAT1146IJS-0.6-T1 数据手册

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AAT1146

Fast Transient 400mA Step-Down Converter

Functional Block Diagram

OUT

VIN

See note

Err

Amp

Voltage

Logic

Reference

INPUT

PGND

AGND

Note: For adjustable version, the internal feedback divider is omitted and the OUT pin is tied directly

to the internal error amplifier.

input voltage. An additional feed-forward capacitor

can also be added to the external feedback to pro-

vide improved transient response (see Figure 1).

Functional Description

The AAT1146 is a high performance 400mA

1.4MHz monolithic step-down converter. It has

been designed with the goal of minimizing external

component size and optimizing efficiency over the

complete load range. Apart from the small bypass

input capacitor, only a small L-C filter is required at

the output. Typically, a 4.7μH inductor and a 4.7μF

ceramic capacitor are recommended (see table of

values).

At dropout, the converter duty cycle increases to

100% and the output voltage tracks the input volt-

age minus the R_DSONdrop of the P-channel high-

side MOSFET.

The input voltage range is 2.7V to 5.5V. The con-

verter efficiency has been optimized for all load

conditions, ranging from no load to 400mA.

The internal error amplifier and compensation pro-

vides excellent transient response, load, and line

regulation. Soft start eliminates any output voltage

overshoot when the enable or the input voltage is

applied.

The fixed output version requires only three external

power components (C_IN, C_OUT, and L). The

adjustable version can be programmed with external

feedback to any voltage, ranging from 0.6V to the

1146.2006.04.1.3

1...6 7 8910 11 12...20

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