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| 型号： | AS1330-BTDT-AD |
| 厂商： | ams |
| 文件页数： | 9/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC ADJ 0.15A 8TDFN |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 3.3 V |
| 输入电压： | 0.6 V ~ 3 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 4MHz |
| 电流 - 输出： | 150mA |
| 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-UFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-TDFN（2x2） |
| 其它名称： | AS1330-BTDT-ADDKR |
AS1330
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS1330 can operate from a single-cell input voltage (V IN ) below 1V, and features fixed frequency (4MHz) and current mode PWM control for
exceptional line- and load-regulation. With low R DS(ON) and gate charge internal NMOS and PMOS switches, the device maintains high-
efficiency from light to heavy loads.
Modern portable devices frequently spend extended time in low-power or standby modes, switching to high power-drain only when certain
functions are enabled. The AS1330 is ideal for portable devices since it maintain high-power conversion efficiency over a wide output power
range, thus increasing battery life in these types of devices.
In addition to high-efficiency at moderate and heavy loads, the AS1330 includes an automatic powersave mode that improves efficiency of the
power converter at light loads. The powersave mode is initiated if the output load current falls below a factory programmed threshold.
Figure 19. AS1330 - Block Diagram
L1
1μH
1
SW
AA Battery
C1
4.7μF
6
VIN
Start Up
OSC
PWM
Control
A
B
A/B
MUX
Sync Drive
–
V OUT
Good
+
0.25 ? 0.35 ?
1.65V
5
VOUT
1.8V
Output
Control
4MHz
Ramp
Generator
Slope
Compensator
Σ
Current
Sense
AS1330
On
Off
4
EN
Shutdown
Control
+
PWM –
Comp
–
Shutdown
Powersave
R C
C C
C P2
–
g m Error
Amp
+
0.8V
3
FB
C2
4.7μF
1
SENSE
Powersave
Operation
Control
Sense & POK
Logic
2
GND
Ref
4
POK
Low-Voltage Start-Up
The AS1330 requires V IN of only 0.85V (typ) or higher to start up. The low-voltage start-up circuitry controls the internal NMOS switch up to a
maximum peak inductor current of 650mA (typ), with 1.5ms (approx.) off-time during start-up, allowing the devices to start up into an output load.
With a V OUT > 1.65V, the start-up circuitry is disabled and normal fixed-frequency PWM operation is initiated. In this mode, the AS1330 operates
independent of V IN , allowing extended operating time as the battery can drop to several tenths of a volt without affecting output regulation. The
limiting factor for the application is the ability of the battery to supply sufficient energy to the output.
Low-Noise Fixed-Frequency Operation
Oscillator
The AS1330 switching frequency is internally fixed at 4MHz allowing the use of very small external components.
Revision 1.06
8 - 17
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相关代理商/技术参数 |
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|---|---|
| AS1331 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:300mA Buck-Boost Synchronous DC/DC Converters |
| AS1331 EB | 制造商:AMS 功能描述:BOARD EVAL FOR AS1331 制造商:AMS 功能描述:Evaluation Board for the AS1331 Buck-Boost Convert IC |
| AS1331_07 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:300mA Buck-Boost Synchronous DC/DC Converters |
| A-S-133-10T | 制造商:ETC MOLEX-INACTIVE 功能描述:Cross Referenced to MOLEX - Part: MOL19203-0016 |
| AS1331-BTDT | 功能描述:IC REG BUCK BST SYNC ADJ 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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