参数资料
| 型号： | AS7620A-BQFT |
| 厂商： | ams |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 0.5A 12MLPQ |
| 设计资源： | Design Support Tool |
| 标准包装： | 6,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 32 V |
| 输入电压： | 3.6 V ~ 32 V |
| PWM 型： | 混合物 |
| 电流 - 输出： | 500mA |
| 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： | 12-VQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 12-MLPQ（4x4） |
A S7 6 2 0
6 50 m A , U lt r a lo w Ri p p le S te p Do w n D C/ DC Co n v e r te r
1 General Description
The AS7620 is an easy-to-use, high-efficiency, high-voltage,
hysteretic step-down DC-DC converter, operating in asynchronous
mode. Its low-power architecture extends hold-up time in battery-
backed and critical applications where maximum up-time over a wide
input supply voltage range is needed, while still providing for high
efficiencies of up to 90% during peak current demands.
Although the AS7620 is optimized for 24V applications found in
industrial and medical systems, its ability to support 100% Duty
Cycle makes the AS7620 ideal for applications demanding maximum
up-time and soft power fail behavior. In combination with low idle
current of only 30μA, on-demand switching reduces operating
current at low load currents.
By selecting an appropriate inductor value, operating current can be
lowered and switching frequencies tuned to certain load conditions.
A pin-strapped current limit input minimizes inductor peak current
and thus inductor size and cost for any given application.
The device further includes output short-circuit protection and
thermal shutdown. In shutdown mode, only 1μA (typ) of current is
consumed.
Figure 1. AS7620 - Block Diagram
VIN
LDO
Temp
2 Key Features
Low quiescent current for efficient partial load operation
Wide Supply Voltage Range, 3.6V to 32V
100% Duty Cycle extends operating range
Pin-programmable cycle-by-cycle current limit
Integrated PMOS eliminates bootstrap capacitor
Resistor-programmable Early Power Fail Warning Input
Power-Good Flag
Thermal Shutdown
Fixed 3.3V and adjustable output (1.2V to V IN )
Small 4x4mm 12-Lead MLPQ Enhanced Power Package
Specified from -40oC to +125oC junction and 85oC maximum
ambient temperatures
3 Applications
The AS7620 is suitable for Industrial 24VDC applications like PLCs,
robotics; Home Security and Building Control applications; Solid-
state utility meters; Signage and LED column power; and Sensor
interfaces.
Level
Shifter
SHDN
FB
Hysteretic
Controller
+
-
Soft-Start
I SENSE
LX
ILIM
+
-
+
V REF
AS7620
PG
PF
VEPF
-
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS7620ABQFT500 | 制造商:AMS 功能描述:IC STEP-DOWN DC/DC CONVERTER MLPQ-12 制造商:AMS 功能描述:IC, STEP-DOWN DC/DC CONVERTER, MLPQ-12 制造商:AMS 功能描述:IC, STEP-DOWN DC/DC CONVERTER, MLPQ-12; Primary Input Voltage:24V; No. of Outputs:1; Output Voltage:32V; Output Current:500mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Output Current Max:500mA;RoHS Compliant: Yes |
| AS7620A-BQFT-500 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| AS7620A-EB | 功能描述:电源管理IC开发工具 AS7620 Evaluation Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| AS7620B-BQFT | 功能描述:IC REG BUCK 3.3V 0.5A 12MLPQ 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 |
| AS7620BBQFT500 | 制造商:AMS 功能描述:IC STEP-DOWN DC/DC CONVERTER MLPQ-12 制造商:AMS 功能描述:IC, STEP-DOWN DC/DC CONVERTER, MLPQ-12; Primary Input Voltage:24V; No. of Outputs:1; Output Voltage:3.3V; Output Current:500mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:12-MLPQ ;RoHS Compliant: Yes |
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