参数资料
| 型号： | AS1337A-BTDT |
| 厂商： | ams |
| 文件页数： | 3/16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： | AS1337A-BTDTDKR |
AS1337
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
VOUT 1
LX 2
PGND 3
AS1337
8 FB
7 VIN
6 POK
Pin Descriptions
Table 2. Pin Descriptions
GND 4
9 GND
5 EN
Pin Name
VOUT
LX
PGND
GND
EN
POK
VIN
FB
GND
Pin Number
1
2
3
4
5
6
7
8
9
Description
Output Voltage . Bias is derived from V OUT when V OUT exceeds V IN . PCB trace length from
V OUT to the output filter capacitor(s) should be as short and wide as is practical.
Switch Pin . Connect an inductor between this pin and V IN . Keep the PCB trace lengths as short
and wide as is practical to reduce EMI and voltage overshoot. If the inductor current falls to zero,
or pin EN is low, an internal 100 Ω anti-ringing switch is connected from this pin to V IN to minimize
EMI.
Note: An optional Schottky diode can be connected between this pin and V OUT .
Power Ground . Provide a short, direct PCB path between this pin and the output capacitor(s).
Ground
Enable Pin . Logic controlled enable input.
1 = Normal operation
0 = Shutdown
Note: In a typical application, EN should be connected to V IN through a 1M Ω
pull-up resistor.
POK. High when V OUT is within regulation.
Input Voltage . The AS1337 gets its start-up bias from V IN unless V OUT exceeds V IN , in which
case the bias is derived from V OUT . Thus, once started, operation is completely independent
from V IN . Operation is only limited by the output power level and the internal series resistance of
the supply.
Feedback Pin . Feedback input to the g m error amplifier. Connect a resistor divider tap to this pin.
The output voltage can be adjusted from 2.5V to 5V by: V OUT = 1.23V[1 + (R 1 /R 2 )]
Exposed Pad Ground
Revision 1.05
2 - 15
相关PDF资料 |
PDF描述 |
|---|---|
| AS1339-BWLT | IC CONV BUCK 650MA 16-WLP |
| AS1340A-BTDT-10-6K | IC REG BOOST SYNC ADJ 1.4A 8TDFN |
| AS1341-BTDT-6K | IC REG BUCK 5V/ADJ 0.6A 8TDFN |
| AS1346-BTDT-3318 | IC REG BUCK SYNC DL 12TDFN |
| AS1353-36-T | IC REG LDO 3.6V .15A SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1337A-BTDT EB | 制造商:ams 功能描述:Evaluation Board |
| AS1337A-TD_EK_ST | 功能描述:AS1337A - DC/DC, Step Up or Down 1, Non-Isolated Outputs Evaluation Board 制造商:ams 系列:- 零件状态:过期 主要用途:DC/DC，步升/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:200mA 电压 - 输入:0.65 V ~ 4.5 V 稳压器拓扑:升压，降压 频率 - 开关:1.2MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:AS1337A 标准包装:1 |
| AS1337BBTDT | 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1337B-BTDT | 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 |
| 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 |
发布紧急采购，3分钟左右您将得到回复。