R1293 Series

Multi Power Supply IC with Amplifier for LCD

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Description

The R1293 is a multi power supply IC dedicated for mid-size TFT LCD panels. The R1293 consists of a PWM control step-up DC/DC converter, an LDO regulator, a VCOM amplifier and six GAMMA amplifiers. The output noise can be reduced by SEL pin. (SEL pin "H": normal mode, SEL pin "L": low noise mode.) The MOSFET for step-up DC/DC converter is built-in and, low power operation is realized by standby mode. The package is 4mm square QFN(PL)0404-32.

Spec

	Consumer
Input Voltage Range	DC/DC: 2.2 V to 5.5 V (6.5 V) LDO: 2.2 V to 5.5 V (6.5 V) AMP: 5.0 V to 16 V (24 V)
Operating Temperature Range	-40°C to 85°C (125°C)
Supply Current	Typ. 300 µA
Standby Current	Typ. 60 µA
Output Voltage Range	DC/DC: Max. 16 V (Externally Adjustable) LDO: 1.8 V to 2.5 V (Internally Fixed)
Output Voltage Accuracy	LDO: ±1.0%
Feedback Voltage	DC/DC: 1 V
Feedback Voltage Accuracy	DC/DC: ±15 mV
Output Current	LDO: 350 mA
Oscillator Frequency	Typ. 300 kHz to1 MHz (Externally Adjustable)
Maximum Duty Cycle	Typ. 90% (Externally Adjustable)
Package	QFN(PL)0404-32
Buffer Amplifier Input Voltage Range	VCOM: 1.5 V to VBUFF -1.5 V GAMMA: 0 V to VBUFF
Buffer Amplifier Output Current	VCOM: -100 mA to 100 mA GAMMA: -10 mA to 10 mA

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TSD	ILX	OCP	OVP	UVLO	OVLO	Reverse	Shutdown	Soft Start	SSCG	PGOOD	Auto Discharge	Anti-ringing	Sequencing	Max Duty	Ext. Phase	LED Adjust

Functional Description

Quality &
Packages

Product Name	Compatibility	Package	Marking	Reliability
R1293Kxx1A-E2		QFN(PL)0404-32	R1293K	R1293K

Refer to the datasheets for the details on the product.
The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

TSD	Thermal Shutdown Function
ILX	LX Current Limit Function
OCP	Overcurrent Protection
OVP	Overvoltage Protection
UVLO	Undervoltage Lockout Protection
OVLO	Overvoltage Lockout Protection
Reverse	Reverse Current Protection Circuit
Shutdown	Shutdown Function
Soft Start	Soft Start Function
SSCG	Spread Spectrum Clock Generator Function
PGOOD	Power Good Output
Auto Discharge	Auto Discharge Function
Anti-ringing	Anti-ringing Switch Function
Sequencing	Start-up Sequencing Control
Max Duty	Maximum Duty Cycle
Ext. Phase	Externally Adjustable Phase Compensation
LED Adjust	LED High-speed Dimming Control