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| 型号： | AS1324-BTTT-AD |
| 厂商： | ams |
| 文件页数： | 12/21页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ TSOT23-5 |
| 设计资源： | Design Support Tool |
| 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： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 600mA |
| 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： | SOT-23-5 细型，TSOT-23-5 |
| 包装： | 标准包装 |
| 供应商设备封装： | TSOT-23-5 |
| 其它名称： | AS1324-BTTT-ADDKR |
AS1324
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Table 5. Recommended Inductors
Part Number
LQH32CN2R2M33
LQH32CN4R7M33
LPS3008-222MLC
LPS3015-222MLC
MOS6020-222MLC
MOS6020-472MLC
CDRH3D16NP-2R2N
CDRH3D16ND-4R7N
L
2.2μH
4.7μH
2.2μH
2.2μH
2.2μH
4.7μH
2.2μH
4.7μH
DCR
97m ?
150m ?
175m ?
110m ?
35m ?
50m ?
72m ?
105m ?
Current Rating
790mA
650mA
1100mA
2000mA
3260mA
1820mA
1200mA
900mA
Dimensions (L/W/T)
3.2x2.5x2.0mm
3.2x2.5x2.0mm
3.1x3.1x0.8mm
3.1x3.1x1.5mm
6.0x6.8x2.4mm
6.0x6.8x2.4mm
4.0x4.0x1.8mm
4.0x4.0x1.8mm
Murata
Coilcraft
www.coilcraft.com
Sumida
www.sumida.com
Figure 26. Efficiency Comparison of Different Inductors, V IN = 2.7V, V OUT = 1.8V and 1.2V
95
90
85
80
75
V OUT = 1.8V
95
90
85
80
75
V OUT = 1.2V
70
LQH32CN2R2
LPS3015-222
LQH32CN4R7
LPS3008-222
M OS6020-222
M OS6020-472
70
LQH32CN2R2
LPS3015-222
LQH32CN4R7
LPS3008-222
M OS6020-222
M OS6020-472
1
10
100
1000
1
10
100
1000
Output Current (mA)
Output Current (mA)
9.3 Output Capacitor Selection
The advanced fast-response voltage mode control scheme of the AS1324 allows the use of tiny ceramic capacitors. Because of their lowest
output voltage ripple low ESR ceramic capacitors are recommended. X7R or X5R dielectric output capacitor are recommended.
At high load currents, the device operates in PWM mode and the RMS ripple current is calculated as:
V OUT
= V OUT × ------------------------ × -----------------
I RMSC
OUT
1 – --------------
V IN 1
L × f 2 × 3
(EQ 4)
While operating in PWM mode the overall output voltage ripple is the sum of the voltage spike caused by the output capacitor ESR plus the
voltage ripple caused by charging and discharging the output capacitor:
V OUT
? V OUT = V OUT × ------------------------ × ? -------------------------------- + ESR ?
? 8 × C OUT × f
L × f
1 – --------------
V IN 1
?
(EQ 5)
Higher value, low cost ceramic capacitors are available in very small case sizes, and their high ripple current, high voltage rating, and low ESR
make them ideal for switching regulator applications. Because the AS1324 control loop is not dependant on the output capacitor ESR for stable
operation, ceramic capacitors can be used to achieve very low output ripple and accommodate small circuit size.
At light loads, the converter operates in powersave mode and the output voltage ripple is in direct relation to the output capacitor and inductor
value used. Larger output capacitor and inductor values minimize the voltage ripple in powersave mode and tighten DC output accuracy in
powersave mode.
www.ams.com/DC-DC_Step-Up/AS1324
Revision 1.06
12 - 21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1324-TT-AD_EK_ST | 功能描述:AS1324-AD - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board 制造商:ams 系列:- 零件状态:有效 主要用途:DC/DC，步降 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:1.8V 电流 - 输出:600mA 电压 - 输入:2.7 V ~ 5.5 V 稳压器拓扑:降压 频率 - 开关:1.5MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:AS1324-AD 标准包装:1 |
| AS1325 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:300mA Step-Up DC-DC Converter |
| AS1325-33 EB | 功能描述:BOARD EVAL AS1325-33 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 |
| AS1325-33-EB | 制造商:ams 功能描述:AS1325-33 Evaluation Board |
| AS1325-33-T | 制造商:ams 功能描述:300/185mA step-up DC-DC converter with a fixed output voltage of +3.3V/5.0V, (T/R) |
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