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Микросхема CM501 QFN-48 2 шт. - Объявления на сайт

Микросхема CM501 QFN-48 2 шт.

ПРОДАЖАВ избранное
97,56 руб
Контакт AliExpress
Добавлено 15-08-2019 в 17:08


Купить Микросхема CM501 QFN-48 2 шт.

PMIC for LCD TV / Monitor

General Description

The CM501 generates all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) panels in TVs

and Monitors. It includes boost and buck regulators, VGH and VGL charge pump regulators, gate pulse modulator

(GPM) , HV LDO, voltage detector (XAO) and VCOM OP. The CM501 can support input voltage from 8V to 14V and

is optimized for LCD TV panel and LCD monitor applications running directly from 12V supply. The boost and buck regulators feature internal power MOSFETs and high-frequency operation allowing the use of small inductors and capacitors, resulting in a compact solution. Both switching regulators use fixed-frequency, current-mode control architectures, providing fast loadtransient response and easy compensation. The VGH and VGL charge-pump regulators provide supply voltages for TFT gate driver. Both output voltages can be adjusted with external resistive voltage dividers. The GPM is controlled by frame signals from timing controller to modulate the Gate-On voltage (VGHM), which acts as a flicker compensation to reduce the coupling effect between gate lines and pixels. It also can delay VGHM while power-on for achieving a correct power-on sequence for gate driver ICs. VGHM power-on delay time, the falling time and falling stop voltage can be programmable by an external capacitor and an external resistor.

The voltage detector (XAO) monitors VIN voltage to issue a reset signal while the detected voltage is too low. The

detecting level is decided by an external resistive voltage divider. The HV LDO can provide a highly accurate voltage (0.5%) for gamma reference voltage. It has fast transient response and also wide operation input range. The VCOM OP can drive the LCD VCOM voltage that features high short-circuit current (300mA), fast slew rate (45V/μs), wide bandwidth (20MHz) and rail-to-rail inputs and outputs. The CM501 is available in a small WQFN-48L 7x7 package and operates over the -40°C to +85°C temperature range.


8V to 14V Supply Input Voltage Range

Current-Mode Boost Regulator

20V 3.5A 0.1Ω Internal N-MOSFET

Programmable Over Current Protection Voltage

±1% Accurate Output

Progremmable Soft-start

Line Regulation 0.15%/V

Load Regulation ±1%/A

External Compensation

Current-Mode Buck Regulator

16.5V 3.2A 0.15Ω Internal N-MOSFET

Over Current Protection

Adjustable Output Voltage from 1.8V to 3.3V

±1% Accurate Output

Line Regulation 0.1%/V

Load Regulation ±0.5%/A

Internal Compensation

Internal Soft-start

Adjustable VGH Charge Pump

±2% Accurate Output

Continuous Output Current 50mA

Adjustable VGL Charge Pump

Accurate Output Controlled by ( REF FBN )

Continuous Output Current 50mA

Gate Pulse Modulator

18V to 35V Positive Supply Input

Flicker Compensation

Power-On/Off Sequence Control

On-Chip GPM Controller with Adjustable Falling

Time and Falling Stop Voltage

Voltage Detector (XAO)

Adjustable Detecting Voltage (±1%)

N-Channel Open-Drain Output


5V to 20V Input Supply Voltage

±300mA Output Short-Circuit Current for 1ms

45V/μs Slew Rate

20MHz, 3dB Bandwidth

Rail-to-Rail Input/Output


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