RT9011 是一款双路300mA输出，低噪声，低压差的线性稳压器。输出电压范围为1.2V到3.6V,输入电压为2.5V到5.0V.常用于手机，手提电脑，PCMCIA卡及其他电池供电产品的电源电路中。

The RT9011 is a dual channel, low noise, and low dropout regulator sourcing up to 300mA at each channel. The range of output voltage is from 1.2V to 3.6V by operating from 2.5V to 5.5V input.
The RT9011 offers 2% accuracy, extremely low dropout voltage (240mV @ 300mA), and extremely low ground current, only 27μA per LDO. The shutdown current is near zero current which is suitable for battery-power devices. Other features include current limiting, over temperature, output short circuit protection.
The RT9011 is short circuit thermal folded back protected. The IC lowers its OTP trip point from 165°C to 110°C when output short circuit occurs (VOUT < 0.4V) providing maximum safety to end users.
The RT9011 can operate stably with very small ceramic output capacitors, reducing required board space and component cost. The RT9011 is available in fixed output voltages in the TSOT-23-6, WDFN-8L 2x2, WDFN-10L 3x3, WDFN-8L 3x3 and WDFN-6L 1.6x1.6 packages.

Note :
Richtek Pb-free and Green products are :
► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
► Suitable for use in SnPb or Pb-free soldering processes.

1. 宽输入电压范围:2.5V 到 5.0V
2. 低噪声,非常适合于射频电路
3. 不需外接耦合电容
4. 温度系数低
5. 双路300mA线性稳压输出
6. 低压差
7. 高精度输出（2%）
8. 超低静态功耗(27uA/LDO)
9. 短路保护功能
10.自动热保护
11.过流保护

• Wide Operating Voltage Ranges : 2.5V to 5.5V
• Low-Noise for RF Application
• No Noise Bypass Capacitor Required
• Fast Response in Line/Load Transient
• TTL-Logic-Controlled Shutdown Input
• Low Temperature Coefficient
• Dual LDO Outputs (300mA/300mA)
• Ultra-low Quiescent Current 27μA/LDO
• High Output Accuracy 2%
• Short Circuit Protection
• Thermal Shutdown Protection
• Current Limit Protection
• Short Circuit Thermal Folded Back Protection
• Tiny TSOT-23-6 and 6-Lead/8-Lead/10-Lead WDFN Packages
• RoHS Compliant and 100% Lead (Pb)-Free

• CDMA/GSM Cellular Handsets
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances