- 您现在的位置：买卖IC网 > PDF目录14771 > AS1337B-BTDT (ams)IC REG BUCK BOOST SYNC ADJ 8TDFN PDF资料下载
参数资料
| 型号： | AS1337B-BTDT |
| 厂商： | ams |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 8TDFN |
| 标准包装： | 1 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 5 V |
| 输入电压： | 0.65 V ~ 4.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 200mA |
| 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： | 8-WDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-TDFN（3x3） |
| 其它名称： | AS1337B-BTDTDKR |
AS1337
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Component Selection
Only three power components are required to complete the design of the buck-boost converter, except the additional two resistors for the voltage
divider to set V OUT . The high operating frequency and low peak currents of the AS1337 allow the use of low value, low profile inductors and tiny
external ceramic capacitors.
Inductor Selection
The inductor should have low ESR to reduce the I2R power losses, and must be able to handle the peak inductor current without saturating.
High-frequency ferrite core inductor materials reduce frequency dependent power losses compared to less expensive powdered iron types,
which result in improved converter efficiency.
A 4.7μH to 15μH inductor value with a >850mA current rating and low DCR is recommended. For applications where radiated noise is a con-
cern, a toroidal or shielded inductor can be used.
Capacitor Selection
A 10μF capacitor is recommend for C IN as well as a 22μF for C OUT . Small-sized ceramic capacitors are recommended. X5R and X7R ceramic
capacitors are recommend as they retain capacitance over wide ranges of voltages and temperatures.
Output Capacitor Selection
Low ESR capacitors should be used to minimize V OUT ripple. Multi-layer ceramic capacitors are recommended since they have extremely low
ESR and are available in small footprints. A 1 to 10μF output capacitor is sufficient for most applications. Larger values up to 22μF may be used
to obtain extremely low output voltage ripple and improve transient response.
An additional phase lead capacitor may be required with output capacitors larger than 10μF to maintain acceptable phase margin. X5R and X7R
dielectric materials are recommended due to their ability to maintain capacitance over wide voltage and temperature ranges.
Input Capacitor Selection
Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. Ceramic capacitors are recom-
mended for input decoupling and should be located as close to the device as is practical. A 4.7μF input capacitor is sufficient for most applica-
tions. Larger values may be used without limitations.
Table 5. Recommended External Components
Name
C IN
C OUT
L1
Part Number
GRM219R60J106KE19
GRM21BR60J226ME39
MOS6020-472ML
Value
10μF
22μF
4.7μH
Rating
6.3V
6.3V
1.82A
Type
X5R
X5R
50m Ω
Size
0805
0805
6.8x6.0x2.4mm
Manufacturer
Murata
Coilcraft
PCB Layout Guidelines
The high-speed operation of the AS1337 requires proper layout for optimum performance.
A large ground pin copper area will help to lower the device temperature.
A multi-layer board with a separate ground plane is recommended.
Traces carrying large currents should be direct.
Trace area at pin FB should be as small as is practical.
The lead-length to the battery should be as short as is practical.
Revision 1.05
11 - 15
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6408BS22+T | IC DETECTOR VOLT 4-UCSP |
| RSC10DRTS-S734 | CONN EDGECARD 20POS DIP .100 SLD |
| SC185BULTRT | IC REG BUCK SYNC 1V 4A 16MLPQ |
| MAX6408BS23+T | IC DETECTOR VOLT 4-UCSP |
| MAX6406BS31+T | IC DETECTOR VOLT 4-UCSP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1339 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA RF Step-Down DC-DC for PA, with two LDOs |
| AS1339 EB | 功能描述:BOARD EVAL AS1339 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 |
| AS1339-BWLT | 功能描述:IC CONV BUCK 650MA 16-WLP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| AS1339-DB | 制造商:ams 功能描述:Evaluation Board |
| AS1339-EB | 功能描述:电源管理IC开发工具 AS1339 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 |
发布紧急采购，3分钟左右您将得到回复。