LED drive control dedicated circuit

2. Characteristics Description • Using CMOS technology • Multiple display modes (10 segments × 7 digits ~ 13 segments × 4 digits) • Maximum support for matrix keys 10×2 • Brightness adjustment circuit (8 levels of duty cycle adjustable) • Serial interface (CLK, STB, DIO) • Oscillation mode:

LED面板显示驱动芯片

TM1628A 是一种带键盘扫描接口的LED（发光二极管显示器）驱动控制专用IC，内部集成有MCU 数字接口、数据锁存器、LED驱动、键盘扫描等电路。本产品性能优良，质量可靠。 • 采用功率CMOS 工艺\n• 多种显示模式（10 段×7 位 ～ 13 段×4 位）\n• 最大支持矩阵按键10x2\n• 灰度调节电路（8级占空比可调）\n• 串行接口（CLK，STB，DIO）\n• 振荡方式：内置RC 振荡\n• 内置上电复位电路\n• 内置数据锁存电路\n• 内置针对LED反偏漏电导致暗亮问题优化电路\n• 封装形式：SOP28;

3-Cell, High-Efficiency, Step-Up DC/DC Converter

FEATURES 4V to 24V Input Voltage Operation. Adjustable Output Voltage. Low Quiescent Current at 100µA. Pulse-Skipping and Pulse-Frequency Modulation Maintain High Efficiency (max. 95). 90KHz to 250KHz Oscillator Frequency. Power-Saving Shutdown Mode (8µA Typical). Push-Pull

Clarification to the Serial I/O Control Register Description for the DSP1620/27/28/29 Devices

Active Clock Frequency The purpose of this advisory is to clarify the function of the serial I/O control registers in the DSP1620/27/28/29 devices. Specifically, it clarifies the function of the control register field that specifies the active clock frequency. The device data sheets state that th

LG1628AXA SONET/SDH 2.488 Gbits/s Transimpedance Amplifier

Functional Description The Lucent Technologies Microelectronics Group LG1628AXA is a hybrid integrated circuit that combines the Lucent LG1628A gallium arsenide (GaAs) transimpedance amplifier chip with an external Si dual operational amplifier and necessary filtering to achieve an ultrawide dyna

HIGH-EFFICIENCY STEP-UP DC-DC CONVERTER

DESCRIPTION The SC1628 is a high performance step-up DC-DC converter, designed to drive an external power switch to generate programmable positive voltages. In the particularly suitable LCD contrast bias and flash memory programming power supply applications, typical full load efficiencies are

HIGH-EFFICIENCY STEP-UP DC-DC CONVERTER

DESCRIPTION The SC1628 is a high performance step-up DC-DC converter, designed to drive an external power switch to generate programmable positive voltages. In the particularly suitable LCD contrast bias and flash memory programming power supply applications, typical full load efficiencies are