EC92

R.F. TRIODE

EC9223

Multi-Channel TFT LCD Supply; ◆ 2.5V to 5.5V input supply\n◆ Active-high Enable Control\n◆ Current-mode boost regulator\n– 1.2MHz switching frequency\n– Integrated 20V/1.8A 700mΩ FET\n– Fast transient response to pulsed load\n– High efficiency up to 90%\n– Adjustable high-accuracy output voltage(±1%)\n◆ VGH positive charge pump\n◆ VGL negative charge pump\n◆ Integrated unity-gain VCOM buffer\n– ±150mA output current limit\n– 12V/us slew rate\n– 12MHz Bandwidth\n◆  Low-voltage detection circuit\n◆ Soft-start and timed delay fault latch for all outputs\n◆ Thermal shutdown\n◆ Thin 3×3 mm 16-lead WQFN package\nApplications◆ TFT LCD for Notebooks\n◆ Tablet Personal Computer Display\n◆ Car Navigation Display\n◆ Portable equipment\nPin Configurations\nOrdering info\nTypical Applications circuit\n;

TheEC9223 is an integrated power supply solution optimized for small to medium size thin- film transistor (TFT) liquid crystal displays (LCD’s). The boost converter operates  at a fixed frequency of 1.2MHz. The integrated N-channel FET has a current limit of 1.8A. The positive and negative charge pumps provide regulated  TFT  LCD  gate-on  and gate-off supplies. Both outputs can be adjusted by external resistive voltage dividers.

EC9232

Multi-Channel TFT LCD Supply; ◆  2.5V to 5.5V input supply\n◆ Current-mode boost regulator \n      - 1.2MHz switching frequency\n      - Integrated 20V/3.0A 160mΩ FET\n      - Fast transient response to pulsed load\n      - High efficiency up to 90%\n      - Adjustable high-accuracy output voltage(±1%)\n      - Over current protection\n      - Over voltage protection\n◆ VGH positive charge pump controller\n◆ VGL negative charge pump controller\n◆ Integrated high performance operational amplifier\n      - ±350mA output short-circuit current\n      - 40V/us fast slew rate\n      - 20MHz Bandwidth\n      - rail-to-rail output\n◆  Low-voltage detection circuit\n◆  GPM controller\n      - Adjustable falling time\n      - Adjustable delay\n◆ Thermal shutdown\n◆ Thin 4x4 mm 24-lead VQFN package\n \n;

The EC9232 is an integrated power supply solution optimized for small to medium size thin-film transistor (TFT) liquid crystal displays (LCD’s). The boost converter operates at the frequency of 1.2MHz. The integrated N channel FET has a typical current limit of 3.0A and can support output voltages up to 20V. The gate-on and gate-off charge pumps provide regulated TFT-LCD gate-on and gate-off supplies. Both outputs can be adjusted by external resistive voltage-dividers. The GPM is a flicker compensation circuit to reduce the coupling effect of gate lines; the gate-shaping timing is controlled by the timing-controller to modulate the Gate-On voltage, VGHM. It also can delay the Gate-On voltage during power-on to achieve a correct power-on sequence for gate driver ICs. Both the power-on delay time and the falling time of the Gate-On voltage are programmable by external capacitor and resistor. The integrated operational amplifier is typically used for LCD VCOM driving; the output can sink or source up to 350mA short-circuit current. This operational amplifier features fast slew rate (40V/us), wide bandwidth (20MHz), and rail-to-rail outputs as well. A built-in voltage detector generates a reset signal when the input voltage drops below a specified level. The reset signal is active low, and the detecting level is decided by an external resistor divider. The EC9232 is available in a thin 24-pin 4x4 mm VQFN green package.\n\n\n\n

EC9288

5V 6A 1.2MHz Synchronous Boost Converter; \n●92%EffiicencySynchronousBoostConverter With 1000-mA Output Current From 1.8V Input\n●Stable with Low ESR Output Capacitors\n●Fixed 1.2MHz Oscillator Frequency\n●Low EMI Converter (Integrated Anti-Ringing Function)\n●Low Battery Output\n●Integrated Power Save Mode Operation to Improve Light Load Efficiency\n●On load startup\n●Automatic restart after protection\n●Load Disconnected During Shutdown\n●Output Current-Limit Protection\n●Over Temperature Protection\n●Under Voltage Protection\n●Enable/Shutdown Function\n●Available in SOP-8(Exposed Pad) Packages\n●Lead Free and Green Devices Available( RoHS Compliant)\n;

The EC9288 is a synchronous rectifier, fixed switching frequency (1.2MHz typical), and current-mode step-up regulator. The device allows use o f small inductors and output capacitors for USB devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. At light loads, the EC9288 will automatically enter in Pulse Frequency Modulation (PFM) operation to reduce the dominant switching losses. During PFM operation, the IC consumes very low quiescent current and maintains high efficiency over the complete load range. The EC9288 also includes current-limit and over temperature shutdown to prevent damage in the event of an output overload. The EC9288 is available in SOP-8(Exposed Pad) packages.\n\n \n\n

EC9208

High Efficiency 1MHz, 2A, Step up Regulator

EC9208NNB3R

丝印：9208f；Package：SOT23-6；High Efficiency 1MHz, 2A, Step up Regulator

EC9210

High Efficiency 1.5MHz, Step up Regulator

EC9210NNT2R

丝印：TD8210；Package：TSOT23-5；High Efficiency 1.5MHz, Step up Regulator

EC9211

High Efficiency 1.5MHz, Step up Regulator

EC9211NNB3R

丝印：9211f；Package：SOT23-6；High Efficiency 1.5MHz, Step up Regulator