参数资料
型号: A8583KLPTR-T
厂商: Allegro Microsystems Inc
文件页数: 1/33页
文件大小: 0K
描述: IC REG BUCK ADJ 3.5A 16TSSOP
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 0.8V
输入电压: 4.7 V ~ 36 V
PWM 型: 电流模式
频率 - 开关: 250kHz ~ 2.45MHz
电流 - 输出: 3.5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 标准包装
供应商设备封装: 16-TSSOP-EP
其它名称: 620-1396-6
A8583
Wide Input Voltage, 2.4 MHz , 3.5 A
Asynchronous Buck Regulator
Features and Benefits
? Automotive AEC-Q100 qualified
? 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 3.5 A steady-state output current
? Adjustable output voltage as low as 0.8 V
? Internal 70 m Ω high-side switching MOSFET
? Adjustable switching frequency, f SW : 0.25 to 2.4 MHz
? Synchronization to external clock: 1.2 × f SW to 1.5 × f SW
? Sleep mode supply current less then 3 μ A
? Soft start time externally set via the SS pin
? Very low no-load current, typically 3.5 mA
? Pre-bias startup compatible
? 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
Package: 16-pin TSSOP (suffix LP)
Description
The A8583 is an adjustable frequency, high output current,
PWM regulator that integrates a low resistance, high-side,
N-channel MOSFET. The A8583 incorporates current-mode
control to provide simple compensation, excellent loop
stability, and fast transient response. The A8583 utilizes
external compensation to accommodate a wide range of power
components to optimize transient response without sacrificing
stability.
The A8583 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
3.5 A of load current. The A8583 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 A8583 only turns-on the lower
FET to charge the boot capacitor when needed, not every PWM
Continued on the next page…
Applications:
? GPS/infotainment
?
?
?
Automobile audio
Home audio
Network and telecom
Not to scale
Typical Application
A8583
V IN
CIN1
3.3 μ F
50 V
CIN2
50 V
Empty
1
2
3
5
1 2
7
VIN
VIN
VIN
GND
GND
EN/SY NC
SW
SW
BOOT
FBX
1 6
1 5
14
10
CBOOT
100 nF
L O
1.5 μ H
D1
4 A /40 V
SMB
RS1
16.5 k Ω
CO1
10 μ F
16 V
CO2
10 μ F
16 V
VOUT
4
SS
CFBX
120 pF
RS2
5.23 k Ω
CSS
22 nF
RFSET
11.5 k Ω
CP
4.7 pF
8
11
RZ
18.2 k Ω
CZ
1.2 nF
FSET
COMP
PAD
FB
POK
9
6
RFB2
5.23 k Ω
RFB1
16.5 k Ω
3.3V
RPU
2 k Ω
POK
Figure 1. Application schematic, at V IN 5 to 16 V, 3.3 V OUT , at 2 MHz
A8583-DS, Rev. 16
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相关代理商/技术参数
参数描述
A8584 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A8584 is an adjustable frequency, high output current, PWM regulator that integrates a low resistance, high-side, N-channel MOSFET.
A8584KLPTR-T 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A8584 is an adjustable frequency, high output current, PWM regulator that integrates a low resistance, high-side, N-channel MOSFET.
A8585KLKTR-T 功能描述:Buck Switching Regulator IC Positive Fixed 5V 1 Output 2A 10-LSOP (0.154", 3.90mm Width) Exposed Pad 制造商:allegro microsystems, llc 系列:汽车级,AEC-Q100 包装:剪切带(CT) 零件状态:有效 功能:降压 输出配置:正 拓扑:降压 输出类型:固定 输出数:1 电压 - 输入(最小值):4V 电压 - 输入(最大值):35V 电压 - 输出(最小值/固定):5V 电压 - 输出(最大值):- 电流 - 输出:2A 频率 - 开关:300kHz ~ 550kHz 同步整流器:无 工作温度:- 安装类型:表面贴装 封装/外壳:10-LSOP(0.154",3.90mm 宽)裸焊盘 供应商器件封装:10-SOIC 标准包装:1
A8585KLKTR-T-1 功能描述:WIDE INPUT VOLTAGE 2A BUCK REGUL 制造商:allegro microsystems, llc 系列:汽车级,AEC-Q100 包装:带卷(TR) 零件状态:在售 功能:降压 输出配置:正 拓扑:降压 输出类型:固定 输出数:1 电压 - 输入(最小值):4V 电压 - 输入(最大值):35V 电压 - 输出(最小值/固定):3.3V 电压 - 输出(最大值):- 电流 - 输出:2A 频率 - 开关:300kHz ~ 550kHz 同步整流器:无 工作温度:- 安装类型:表面贴装 封装/外壳:10-LSOP(0.154",3.90mm 宽)裸露焊盘 供应商器件封装:10-SOIC 标准包装:9,000
A8585KLKTR-T-2 功能描述:WIDE INPUT VOLTAGE 2A BUCK REGUL 制造商:allegro microsystems, llc 系列:汽车级,AEC-Q100 包装:带卷(TR) 零件状态:在售 功能:降压 输出配置:正 拓扑:降压 输出类型:固定 输出数:1 电压 - 输入(最小值):4V 电压 - 输入(最大值):35V 电压 - 输出(最小值/固定):5V 电压 - 输出(最大值):- 电流 - 输出:2A 频率 - 开关:300kHz ~ 550kHz 同步整流器:无 工作温度:- 安装类型:表面贴装 封装/外壳:10-LSOP(0.154",3.90mm 宽)裸露焊盘 供应商器件封装:10-SOIC 标准包装:9,000