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| 型号： | AS1326B-BTDR |
| 厂商： | ams |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC 3.3V/ADJ 10TDFN |
| 标准包装： | 624 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，2.5 V ~ 5 V |
| 输入电压： | 0.7 V ~ 5 V |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 800mA |
| 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： | 10-WFDFN 裸露焊盘 |
| 包装： | 托盘 |
| 供应商设备封装： | 10-TDFN（3x3） |
| 产品目录页面： | 804 (CN2011-ZH PDF) |
AS1326
Datasheet - D e t a i l e d D e s c r i p t i o n
Synchronized-PWM Operation
In PWM mode the AS1326A/AS1326B can be synchronized with an external clock (500kHz to 1.2MHz) by applying an
external clock signal to pin CLK/SEL. This synchronization will minimize interference in wireless applications since the
operating frequency can be set to a preferred value. The synchronous rectifier is active during synchronized-PWM
operation.
Synchronous Rectifier
The AS1326A/AS1326B feature an integrated, P-channel synchronous rectifier for enhanced efficiency operation. Syn-
chronous rectification provides 5% improved efficiency over similar non-synchronous boost regulators.
In PWM mode, the synchronous rectifier is turned on during the second half of each switching cycle. In low-power
mode, an internal comparator turns on the synchronous rectifier when the voltage at LX exceeds the boost regulator
output.
Note: While operating with output voltages greater than 4V, an external 0.5A Schottky diode must be connected in
parallel with the P-channel synchronous rectifier.
Low-Voltage Startup Oscillator
The AS1326A/AS1326B contain a CMOS, low-voltage startup oscillator for a 1.1V guaranteed minimum startup input
voltage. At startup, the low-voltage oscillator switches on the N-channel MOSFET until the output voltage reaches
2.15V. With output voltages > 2.15V, the boost-converter feedback and control circuitry are acitvated.
When the AS1326A/AS1326B is in regulation, it can operate down to 0.7V input since internal power for the device is
bootstrapped from the output through pin OUT.
Caution: Do not apply full load until the output > 2.3V.
Shutdown
The AS1326A/AS1326B feature an integrated shutdown mode that reduces quiescent current to 0.1μA. During shut-
down mode (ONN = 1 on AS1326A, ON = 0 on AS1326B), the internal reference and feedback/control circuitry are dis-
abled.
Note: During shutdown, the output voltage is one diode drop below the input voltage.
Reference
The AS1326A/AS1326B contain an internal reference (1.250V ±1%). A 10nF ceramic bypass capacitor must be con-
nected between pins REF and GND. REF can source up to 50μA of external load current.
Note: The bypass capacitor must be placed within 5mm (0.2”) of pin REF.
www.austriamicrosystems.com
Revision 1.05
10 - 18
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相关代理商/技术参数 |
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| AS1326BBTDT | 制造商:ams 功能描述:IC STEP-UP DC/DC CONVERTER TDFN-10 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1326B-BTDT | 功能描述:IC REG BST SYNC 3.3V/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 |
| AS1326-EB | 制造商:ams 功能描述:AS1326 Evaluation Board |
| AS1328A-BQFT-12 | 功能描述:IC REG BUCK SYNC 1.2V 3A 16-TQFN 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 |
| AS1328A-BQFT-15 | 功能描述:IC REG BUCK SYNC 1.5V 3A 16-TQFN 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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