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| 型号： | A8697ELJTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 4A 8SOIC |
| 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： | 0.8 V ~ 20 V |
| 输入电压： | 8 V ~ 25 V |
| PWM 型： | 电流模式 |
| 电流 - 输出： | 4A |
| 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-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-SOIC-EP |
| 产品目录页面： | 1142 (CN2011-ZH PDF) |
| 其它名称： | 620-1178-6 |
A8697
Wide Input Voltage 4.0 A Step Down Regulator
RTSET Selection. Correct selection of RTSET values will
ensure that minimum on-time of the switcher is not violated and
prevent the switcher from cycle skipping. For a given V IN to
V OUT ratio, the RTSET value must be greater than or equal to the
value defined by the curve in the plot below.
Note. The curve represents the minimum RTSET value. When
calculating R TSET , be sure to use V IN (max) / V OUT (min). Resistor
13.0
12.5
12.0
tolerance should also be considered, so that under no operating
conditions the resistance on the TSET pin is allowed to go below
the minimum value.
FB Resistor Selection. The impedance of the FB network
should be kept low to improve noise immunity. Large value resis-
tors can pick up noise generated by the inductor, which can affect
voltage regulation of the switcher.
11.5
11.0
10.5
10.0
Violation of
Minimum On-Time
um
in
lu
ET
R
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
M
im
Va
e
TS
of
Safe Operating Area
5.0
4.5
4.0
3.5
3.0
2.5
2.0
R TSET (k )
Maximum Load Current
Using Allegro A8698 Evaluation Board*
6
5
4
3
2
1
0
*To test maximum load current, the A8697 IC was mounted on
an A8698 Evaluation Board (see next page), and a thermocouple
attached to the IC case to measure T C . The assembly was placed in
an environmental chamber in still air. The initial air temperature in
the chamber temperature was 60°C (T A ), and during the test, I OUT
was adjusted until T C = 115°C.
0
1
2
3
4
5
Load Current (A)
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A8698 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage 3.0 A Step Down Regulator |
| A86989-000 | 制造商:TE Connectivity 功能描述:TXR40SJ00-2014BI 制造商:TE Connectivity 功能描述:TXR40SJ00-2014BI - Bulk |
| A8698ELJ-T | 功能描述:IC REG BUCK ADJ 3A 8SOIC 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:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| A8698ELJTR-T | 功能描述:IC REG BUCK ADJ 3A 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| A-869-M | 功能描述:端子 DISC MFG 07/01 22-18 MALE BLT DISC RoHS:否 制造商:AVX 产品:Junction Box - Wire to Wire 系列:9826 线规:26-18 接线柱/接头大小: 绝缘: 颜色:Red 型式:Female 触点电镀:Tin over Nickel 触点材料:Beryllium Copper, Phosphor Bronze 端接类型:Crimp |
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