参数资料
型号: A4490EES-T
厂商: Allegro Microsystems Inc
文件页数: 2/17页
文件大小: 0K
描述: IC REG BUCK ADJ 1.5A TRPL 20QFN
标准包装: 92
类型: 降压(降压)
输出类型: 可调式
输出数: 3
输出电压: 可调
输入电压: 4.5 V ~ 34 V
PWM 型: 电流模式
频率 - 开关: 550kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 20-QFN 裸露焊盘(4x4)
配用: 620-1388-ND - BOARD EVAL FOR A4490
其它名称: A4490SES-T
A4490SES-T-ND
A4490
Description (continued)
Triple Output Step-Down Switching Regulator
The A4490 is provided in a 20-contact, 4 mm × 4 mm, 0.75 mm
nominal overall height QFN, with exposed pad for enhanced thermal
dissipation. It is lead (Pb) free, with 100% matte tin leadframe
plating.
Applications include the following:
? Photo, inkjet, and portable printers
? Industrial
? Hand-held devices
? Portable applications
Selection Guide
Part Number
A4490EESTR-T
Packing
1500 pieces per 7-in. reel
Operating Temperature Range
(°C)
–40 to 85
Absolute Maximum Ratings ( reference to GND)
Characteristic
Load Supply Voltage
LX1, LX2, and LX3 Pins
PORZ and VDD Pins
ENBx Pin Input Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V BB
V LX n
V IN
I ENBx
T A
T J (max)
T stg
Notes
Driven by a current-limited voltage source
Range E
Rating
36
–1 to 36
–0.3 to 7
1
–40 to 85
150
–55 to 150
Units
V
V
V
mA
oC
oC
oC
Recommended Operating Conditions
Characteristic
Load Supply Voltage
LX1, LX2, and LX3 Pins
Operating Ambient Temperature
Junction Temperature
Symbol
V BB
V LX n
T A
T J
Conditions
To operate at V BB < 6 V, connect V DD
supply to the V BB supply. See Powering
Configurations section.
Min.
4.5
–0.7
–40
–40
Typ.
Max.
34
34
85
125
Units
V
V
oC
oC
Thermal Characteristics may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions*
Value Units
Package Thermal Resistance
R θ JA
On 4-layer PCB based on JEDEC standard
37
oC/W
*Additional thermal information available on the Allegro website.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
相关PDF资料
PDF描述
A4491EESTR-T IC REG BUCK ADJ 2.2A TRPL 20QFN
A4931MET-T IC DC MOTOR PREDRIVER 3PH 28QFN
A4934GLPTR-T IC BLDC DVR 3PHASE 16-ETSSOP
A4936METTR-T IC DC MOTOR PREDRIVER 3PH 32QFN
A4938EETTR-T IC DC MOTOR PREDRIVER 3PH 28-QFN
相关代理商/技术参数
参数描述
A4490EESTRT 制造商:ALLEGRO 功能描述:Pb Free
A4490EESTR-T 功能描述:IC REG BUCK ADJ 1.5A TRPL 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON(1.45x1) 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2
A4491 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Designed to provide the power supply requirements of printers, office automation, industrial, and portable equipment, the A4491 provides three high current,
A4491EESTR-T 功能描述:IC REG BUCK ADJ 2.2A TRPL 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:50 系列:- 类型:升压(升压) 输出类型:可调式 输出数:1 输出电压:5 V ~ 25 V 输入电压:2.3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:600kHz,1.2MHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP,8-MSOP(0.118",3.00mm 宽) 包装:管件 供应商设备封装:8-MSOP
A4492 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Designed to provide the power supply requirements for automotive applications, the A4492 provides three high current, high performance, switching regulator outputs with independent soft start.