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AAT2687IFK-AI-T1 PDF预览

AAT2687IFK-AI-T1

更新时间: 2024-01-20 02:56:16
品牌 Logo 应用领域
ANALOGICTECH 转换器电源电路电源管理电路集成电源管理电路
页数 文件大小 规格书
20页 3577K
描述
PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters

AAT2687IFK-AI-T1 技术参数

生命周期:Obsolete包装说明:HVQCCN,
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
Is Samacsys:N其他特性:ALSO REQUIRED 6V TO 24V
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-XQCC-N24长度:5 mm
信道数量:2功能数量:1
端子数量:24最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:UNSPECIFIED
封装代码:HVQCCN封装形状:RECTANGULAR
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE座面最大高度:0.8 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):2.7 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
温度等级:INDUSTRIAL端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
宽度:4 mmBase Number Matches:1

AAT2687IFK-AI-T1 数据手册

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PRODUCT DATASHEET  
AAT2687  
TM  
SystemPower  
PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters  
General Description  
Features  
The AAT2687 provides two independently regulated DC  
outputs; consisting of a high voltage step-down regula-  
tor and a low input voltage low dropout (LDO) regulator.  
The PMIC is optimized for low-cost 12V adapter inputs,  
making the device the ideal system-on-a-chip power  
solution for consumer communications equipment.  
2-Output Step-Down Converters:  
Channel 1 Step-Down: VIN1 = 6V to 24V  
VOUT1 Adjustable from 1.5V to 5.5V  
IOUT1 up to 4.5A  
High Switching Frequency  
Voltage Mode Control  
PWM Fixed Frequency for Low-Ripple  
Channel 1 is a step-down regulator with an input voltage  
range 6.0 to 24V, providing up to 4.5A output current.  
490kHz fixed switching frequency allows small L/C filter-  
ing components. Channel 1 utilizes voltage mode control  
configured for optimum performance across the entire  
output voltage and load range.  
Channel 2 (LDO): VIN2 = 2.7V to 5.5V  
IOUT2 up to 600mA  
1V Dropout Voltage at 600mA  
High Accuracy ±1.5%  
Small Solution Size  
System On a Chip  
Ultra-small External L/C  
Shutdown Current <35μA  
Channel 2 is a low-dropout (LDO) regulator providing up  
to 600mA output current. The device provides extremely  
low output noise, low quiescent current and excellent  
transient response.  
Independent Enable Pins  
Programmable Over-Current Protection  
Over-Temperature Protection  
Internal Soft Start  
4x5mm 24-Pin TQFN Low Profile Thermally Enhanced  
Package  
The controller includes integrated cycle-by-cycle over-  
current protection, soft-start and over-temperature dis-  
able features. Independent input and enable pins pro-  
vide maximum design flexibility.  
-40°C to 85°C Temperature Range  
The AAT2687 is available in the Pb-free, 4x5mm 24-pin  
TQFN package. The rated operating temperature range is  
-40°C to 85°C.  
Applications  
DSL and Cable Modems  
Notebook Computers  
Satellite Settop Box  
Wireless LAN Systems  
Typical Application  
VOUT1  
3.3V/4.5A  
L1  
LX1  
C3  
4.7µH 5.3A  
0.1µF  
D2  
BST  
C10  
R2 C4  
2k 220nF  
D1  
R3  
8.87k  
2.2nF  
BAS16  
2
1
VL1  
IN1  
R5  
450  
J1  
RS1  
OS1  
C14  
2.2µF  
C7  
C8  
C9  
VIN1  
6.0V - 24.0V  
22µF 22µF 22µF  
FB1  
COMP1  
C5  
2.2nF  
R1  
3.92K  
AAT2687  
C6  
150pF  
1.8V/600mA  
EN1  
R4  
1.96k  
OUT2  
IN2  
VOUT2  
VIN2  
C12  
2.2µF  
+
C1  
C13  
C2  
2.2µF  
220µF 1µF  
EN2 GND  
25V  
25V  
TQFN45-24  
w w w . a n a l o g i c t e c h . c o m  
2687.2008.06.1.0  
1

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