- 您现在的位置：买卖IC网 > PDF目录13806 > AS1323-BTTT-27 (ams)IC REG BOOST SYNC 2.7V TSOT23-5 PDF资料下载
参数资料
| 型号： | AS1323-BTTT-27 |
| 厂商： | ams |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 2.7V TSOT23-5 |
| 设计资源： | Design Support Tool |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 2.7V |
| 输入电压： | 0.75 V ~ 2 V |
| 电流 - 输出： | 100mA |
| 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： | AS1323-BTTT-27DKR |
AS1323
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS1323 is a compact, high-efficiency, step-up DC-DC converter guaranteed to start up with voltages as low as 0.95V, and operate with an
input voltage down to 0.75V. Consuming only 1.6μA of quiescent current, the device includes an integrated synchronous rectifier that eliminates
the need for an external diode and improves overall efficiency by minimizing losses (see Synchronous Rectification on page 8) . The AS1323 also
features an active-low shutdown circuit that supply current to 0.1μA.
Figure 20. Block Diagram
L1
1
4
0.95 to
1.6V
VBATT
C IN
Comparator
Comparator
Discharge
VOUT
C OUT
Voltage
Control
3
SHDNN
AS1323
Logic
Startup
System
Timing
5
LX
Ref
Comparator
Charge
2
VSS
8.1 PFM Control
A forced discontinuous, current-limited, pulse-frequency modulation (PFM) control scheme provides ultra-low quiescent current and high
efficiency over a wide output current-range. Rather than using an integrated oscillator, the inductor current is limited by the 400mA N-channel
current limit or by the 6μs switch maximum on-time. After each device-on cycle, the inductor current must ramp to zero before another cycle can
start. When the error comparator senses that the output has fallen below the regulation threshold, another cycle can begin.
8.2 Synchronous Rectification
The integrated synchronous rectifier eliminates the need for an external Schottky diode, reducing cost and PCB space. During normal operation,
while the inductor discharges, the P-channel MOSFET turns on and shunts the MOSFET body diode. Consequently the rectifier voltage drop is
significantly reduced improving efficiency without the need for external components.
8.3 Low-Voltage Startup Circuit
The AS1323 contains a unique low-voltage startup circuit which ensures start-up even with very high load currents. The minimum start-up
voltage is independent of the load current. This device is powered from pin V BATT , guaranteeing startup at input voltages as low as 0.95V.
8.4 Shutdown
The AS1323 enter shutdown when the SHDNN pin is driven low. During shutdown, the output is completely disconnected from the battery.
Shutdown can be pulled as high as 3.6V, regardless of the voltage at pins V BATT or V OUT . For normal operation, connect SHDN to the input.
Revision 1.07
8 - 14
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6722AUTVFD5+T | IC SUPERVISOR MPU SOT23-6 |
| ACC17DRTI | CONN EDGECARD 34POS .100 DIP SLD |
| SC3316F-4R7 | INDUCTOR SMD 4.7UH 5.4A 100KHZ |
| 160YXF15KEFCT78X11.5 | CAP ALUM 15UF 160V 20% RADIAL |
| SC3316F-470 | INDUCTOR SMD 47UH 1.6A 100KHZ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1323BTTT-27 | 制造商:AMS 功能描述:IC STEP-UP DC/DC CONVERTER 5-TSOT-23 制造商:AMS 功能描述:IC, STEP-UP DC/DC CONVERTER, 5-TSOT-23; Primary Input Voltage:1.2V; No. of Outputs:1; Output Voltage:2.7V; Output Current:100mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Output Current Max:100mA;RoHS Compliant: Yes |
| AS1323-BTTT-30 | 功能描述:IC REG BST SYNC 3V 0.1A TSOT23-5 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 |
| AS1323BTTT-30 | 制造商:AMS 功能描述:IC STEP-UP DC/DC CONVERTER 5-TSOT-23 制造商:AMS 功能描述:IC, STEP-UP DC/DC CONVERTER, 5-TSOT-23; Primary Input Voltage:1.2V; No. of Outputs:1; Output Voltage:3V; Output Current:100mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Output Current Max:90mA ;RoHS Compliant: Yes |
| AS1323-BTTT-33 | 功能描述:IC REG BOOST SYNC 3.3V TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| AS1323BTTT-33 | 制造商:AMS 功能描述:IC STEP-UP DC/DC CONVERTER 5-TSOT-23 制造商:AMS 功能描述:IC, STEP-UP DC/DC CONVERTER, 5-TSOT-23; Primary Input Voltage:1.2V; No. of Outputs:1; Output Voltage:3.3V; Output Current:100mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Output Current Max:80mA ;RoHS Compliant: Yes |
发布紧急采购，3分钟左右您将得到回复。