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A8582 PDF预览

A8582

更新时间: 2024-02-05 16:31:03
品牌 Logo 应用领域
急速微 - ALLEGRO 稳压器
页数 文件大小 规格书
32页 829K
描述
The A8582 is an adjustable frequency, high output current, PWM regulator that integrates a low resistance, high-side, N-channel MOSFET.

A8582 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:TSSOP
包装说明:HTSSOP, TSSOP16,.25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.74
其他特性:ALSO AVAILABLE ADJUSTABLE OUTPUT AS LOW AS 0.8V模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:36 V最小输入电压:4.7 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e3长度:5 mm
湿度敏感等级:2功能数量:1
端子数量:16最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:3.7 A
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK最大切换频率:2700 kHz
温度等级:AUTOMOTIVE端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:4.4 mmBase Number Matches:1

A8582 数据手册

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A8582  
Wide Input Voltage, 2.4 MHz, 2.0 A  
Asynchronous Buck Regulator  
Description  
Features and Benefits  
• Wide operating voltage range: 4.7 to 36 V  
• UVLO stop threshold is at 3.8 V (typ)  
• Supports 40 V input for surge and load dump testing  
• Capable of at least 2.0 A steady-state output current  
• Adjustable output voltage as low as 0.8 V  
• Internal 70 mΩ high-side switching MOSFET  
• Adjustable switching frequency, fSW: 0.25 to 2.4 MHz  
• Synchronization to external clock: 1.2×fSW to 1.5×fSW  
• Sleep mode supply current less then 3 μA  
• Soft start time externally set via the SS pin  
Very low no-load current, typically 3.5 mA  
• Pre-bias startup compatible  
The A8582 is an adjustable frequency, high output current,  
PWM regulator that integrates a low resistance, high-side,  
N-channel MOSFET. The A8582 incorporates current-mode  
control to provide simple compensation, excellent loop  
stability, and fast transient response. The A8582 utilizes  
external compensation to accommodate a wide range of power  
components to optimize transient response without sacrificing  
stability.  
The A8582 regulates input voltages from 4.7 to 36 V, down to  
output voltages as low as 0.8 V, and is able to supply at least  
2.0Aof load current.TheA8582 features include an externally  
adjustable switching frequency, an externally set soft start  
time to minimize inrush currents, an EN/SYNC input to either  
enable VOUT and/or synchronize the PWM switching  
frequency, and a Power OK (POK) output to indicate when  
VOUT is within regulation. The A8582 only turns on the  
lower FET to charge the boot capacitor when needed, not at  
• Power OK (POK) output  
• Pulse-by-pulse current limiting (OCP)  
• Hiccup mode short-circuit protection (HIC)  
• Overtemperature protection (TSD)  
• Overvoltage protection (OVP)  
• Missing asynchronous diode (D1) protection  
• Open-circuit and adjacent pin short-circuit tolerant  
• Short-to-ground tolerant at every pin  
• Externally adjustable compensation  
• Stable with ceramic output capacitors  
Continued on the next page…  
Package: 16-pin TSSOP (suffix LP)  
Applications:  
• GPS/infotainment  
• Automobile audio  
• Home audio  
• Network and telecom  
Not to scale  
Typical Application  
L
O
2.2 μH  
VIN  
VOUT  
1
16  
15  
VIN  
2
SW  
SW  
VIN  
CIN1  
3.3 μF  
50 V  
CIN2  
3
CBOOT  
100 nF  
D1  
CO1  
10 μF  
16 V  
VIN  
50 V  
3 A/40 V  
SMA  
A8582  
Empty  
5
12  
GND  
GND  
14  
10  
RS1  
16.5 kΩ  
BOOT  
FBX  
7
4
8
EN/SYNC  
SS  
RS2  
5.23 kΩ  
CFBX  
120 pF  
CSS  
22 nF  
FSET  
9
6
11  
FB  
COMP  
RFB1  
16.5 kΩ  
3.3V  
RFSET  
11.5 kΩ  
RFB2  
5.23 kΩ  
RZ  
PAD  
15.4 kΩ  
RPU  
2 kΩ  
CZ  
CP  
10 pF  
820 pF  
POK  
POK  
Figure 1. Application schematic, at VIN 5 to 16 V, 3.3 VOUT , at 2 MHz  
A8582-DS, Rev. 14  

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