- 您现在的位置：买卖IC网 > PDF目录14767 > AS7620B-BQFT-500 (ams)IC REG BUCK 3.3V 0.5A 12MLPQ PDF资料下载
参数资料
| 型号： | AS7620B-BQFT-500 |
| 厂商： | ams |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V 0.5A 12MLPQ |
| 设计资源： | Design Support Tool |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 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： | 标准包装 |
| 供应商设备封装： | 12-MLPQ（4x4） |
| 其它名称： | AS7620B-BQFT-500DKR |
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
1 - 16
相关PDF资料 |
PDF描述 |
|---|---|
| HMM12DRYN | CONN EDGECARD 24POS DIP .156 SLD |
| MAX6377XR26+T | IC VOLT DETECT LP 2.63V SC70-3 |
| AS7620A-BQFT-500 | IC REG BUCK ADJ 0.5A 12MLPQ |
| MAX822LUS+T | IC MONITOR VOLT MPU SOT143-4 |
| MAX821MUS+T | IC MONITOR VOLT MPU SOT143-4 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS7620EB | 制造商:AMS 功能描述:Evaluation Board for AS7620 High Voltage Step-Down Converter |
| AS7620QF_EK_ST | 功能描述:AS7620 - DC/DC, Step Down with LDO 1, Non-Isolated Outputs Evaluation Board 制造商:ams 系列:- 零件状态:有效 主要用途:DC/DC，LDO 步降 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:- 电流 - 输出:- 电压 - 输入:3.6 V ~ 32 V 稳压器拓扑:降压 频率 - 开关:- 板类型:完全填充 所含物品:板 使用的 IC/零件:AS7620 标准包装:1 |
| AS762R0FLF | 制造商:TT Electronics / IRC 功能描述:AS762R0FLF |
| AS762R0HLF | 制造商:TT Electronics / IRC 功能描述:AS762R0HLF |
| AS762R0JLF | 制造商:TT Electronics / IRC 功能描述:AS762R0JLF |
发布紧急采购，3分钟左右您将得到回复。