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| 型号： | AS1341 EB |
| 厂商： | ams |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL AS1341 |
| 设计资源： | Design Support Tool |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 600mA |
| 输入电压： | 4.5 ~ 20 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 200kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS1341 |
AS1341
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9.5 Maximum Output Current
The AS1341 output current determines the regulator’s switching frequency. When the converter approaches continuous mode, the output
voltage falls out of regulation. For the typical application, the maximum output current is approximately:
I LOADMAX = 1/2 x I LXPEAKMIN
For low-input voltages, the maximum on-time may be reached and the load current is limited by:
I LOAD = (1/2 x (V IN - V OUT ) x 10μs)/L
9.6 Output Capacitor
Choose the output capacitor to service the maximum load current with acceptable voltage ripple. The output ripple has two components:
variations in the charge stored in the output capacitor with each LX pulse, and the voltage drop across the capacitor ’s equivalent series
resistance (ESR) caused by the current into and out of the capacitor:
V RIPPLE ? V RIPPLEESR + V RIPPLEC
The output voltage ripple as a consequence of the ESR and output capacitance is:
V RIPPLEESR = ESR x I PEAK
V RIPPLEC = (L x (I PEAK - I OUTPUT )2)/(2 x (C OUT x V OUTPUT )) x V IN /(V IN - V OUTPUT )
(EQ 5)
(EQ 6)
(EQ 7)
(EQ 8)
(EQ 9)
Where:
I PEAK is the peak inductor current (see Inductor Selection on page 11) . The worst-case ripple occurs at no-load.
Equations EQ 7 , EQ 8 , and EQ 9 are suitable for initial capacitor selection, but actual values should be set by testing a prototype or evaluation
circuit. As a general rule, a smaller amount of charge delivered in each pulse results in less output ripple. Since the amount of charge delivered
in each oscillator pulse is determined by the inductor value and input voltage, the voltage ripple increases with larger inductance, and as the
input voltage decreases.
Table 6. Recommended Output Capacitor
Part Number
T520V107M010ATE018
A700V826M006ATE018
T520B107M006ATE040
T520A336M006ATE070
A700V226M006ATE028
510X107M020ATE040
EEFUD0J101R
EEFCD0K330R
10TPB100ML
6TPB47M
www.ams.com/DC-DC_Step-Up/AS1341
C
100μF
82μF
100μF
33μF
22μF
10μF
100μF
33μF
100μF
47μF
ESR
18m ?
18m ?
40m ?
70m ?
28m ?
40m ?
15m ?
18m ?
55m ?
70m ?
Revision 1.09
Rated Voltage
10V
6.3V
6V
6.3V
6.3V
20V
6.3V
8V
10V
6.3V
Kemet
www.kemet.com
Panasonic
www.panasonic.com
Sanyo
www.edc.sanyo.com
12 - 18
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相关代理商/技术参数 |
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|---|---|
| AS1341-TD_EK_ST | 功能描述:AS1341 - 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:3.3V 电流 - 输出:600mA 电压 - 输入:4.5 V ~ 20 V 稳压器拓扑:降压 频率 - 开关:200kHz 板类型:完全填充 所含物品:板 使用的 IC/零件:AS1341 标准包装:1 |
| AS1343 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:42V, 1-2 Cells, Micropower, DC-DC Boost Converter |
| AS1343 EB | 功能描述:BOARD EVAL AS1343 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| AS1343ABTDT10 | 制造商:ams 功能描述:IC BOOST DC/DC CONVERTER TDFN-10 |
| AS1343A-BTDT-10 | 功能描述:IC REG BOOST ADJ 1.4A 10TDFN 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 |
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