Y2329是一款带闪烁控制功能LED 驱动的PFM DC/DC 系列芯片，内含PFM 开关型DC/DC升压模块和数字逻辑模块。升压模块需要一只肖特基二极管、一只电感和一只电容组成升压电路，实现电源升压到3.6V 输出，振荡频率为165KHz（典型值）；数字逻辑模块需要另一只电容实现功能切换的电路，共有三种工作状态（全亮，半亮，闪烁）相互切换。该芯片主要用于带控制功能LED 驱动，并且提供扩流端能增大带载能力。
l、工作电压范围：0.9~4.5V
2、输出电压：3.6V~3.74V
3、强带载能力：
2.4V输入，不带扩流MOS时：400mA
2.4V输入，带扩流MOS时：750mA
4、低启动电压：高值为0.9V（输出电流为1mA 时）
5、带特定的切换工作档位的功能
6、只需少量的外接元件：仅一只肖特基二极管、一只电
感和两只电容
7、封装尺寸：SOT23-6
8、带切换功能控制的手电筒
LY73XX
The LY73XX series is a set of three-terminal, low power, high voltage regulators implemented in CMOS ogy. The series features extremely low quiescent cur-technol-rent which is typically 4uμA. They high as 12V. The device provides large current with aallow input voltages as significantly small dropout voltage.
The LY73XX consists of a high-precision voltage refer- ence, an error correction circuit, and a current limnited output driver. They are available with several fixed out-put voltages ranging from 1.8V to 5.0V. CMOS technol-ogy ensures low dropout voltage and low current consumption. Although designed primarily as fixed volt-age regulators, these devices can be used with external components to generate variable voltages and currents.
Features
UItra low quiescent current: 4μA (typ.)
High input voltage (up to 12V)
Output voltage:1.8V, 2.5V, 2.7V, 3.0V, 3.3V, 3.5V, 5.0V
Output voltage accuracy: tolerance +3%
Maximum output current: 250mA
Low dropout voltage
Low temperature coefficient
package：TO-92, SOT-89-3 SOT23-3
Application
Battery-powered equipment
Voltage regulator for microprocessor
Voltage regulator for L AN cards
Wireless Communication equipment
Audio/Video equipment
LY76XX
LY76XX serieslow-dropoutlinear voltage regulators with a built-in voltage reference module, error correction module and phase compensation module. LY76XX series are based on the CMOS process and allow high voltage input with low quiescent current. This series can deliver 100mA output current and allow an input voltage as high as 40V.This series has the function of internal feedback resistor setting from 2.1Vto 12V. The output accuracy is t 2%.
Features
High output accuracy:土2%
Input voltage: up to 40 V
Output voltage: 2.1V ~ 12V
Utralow quiescent current (Typ.=3μA) Output Current: lour= 100mA
(When VIN = 5.5V and Vout =3.3V)Low temperature cofficient
Ceramic capacitor can be used
Package: SOT89-3. T092、SOT23-3
Typical Application
Electronic weighbridge
SCM
Phones, cordless phones
Security Products
Water meters, power meters
LY6118
封装： SOT223 TO252
