CXLE8132 step-up DC/DC converters designed to drive up to six LEDs in series from a Li-Ion cell.Series connection of the LEDs provides identical LED currents and eliminates the need for ballast

The CXLE8132 IS step-up DC/DC converters designed to drive up to six LEDs in series from a Li-Ion cell.Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors.These devices integrate the Schottky diode required exter-nally on competing devices. Additional features include output voltage limiting when LEDs are disconnected, one-pin shutdown and dimming control. The CXLE8132 has

internal soft-start.
The CXLE8132 switches at 1.2MHz, allowing the use of tiny external components. Constant frequency switching results in low input noise and a small output capacitor.Just 0.22μF is required for 4-, 6- or 8-LED applications.
The CXLE8132 is available in low profile(1mm)6-lead

产品特点 返回TOP

Inherently Matched LED Current
Drives Up to 8 LEDs from a 3.6V Supply
No External Schottky Diode Required
1.2MHz Switching Frequency
Automatic Soft-Start
Open LED Protection
High Efficiency: 81%
Requires Only 0.22mF Output Capacitor
Low Profile (1mm) SOT-23 Packaging

应用范围 返回TOP

Cellular Phones
PDAs, Handheld Computers
Digital Cameras
MP3 Players
GPS Receivers

技术规格书（产品PDF) 返回TOP

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产品封装图 返回TOP

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CXLE8121	PWM	2.5V-10V	29V	0.1V	320mA	85%	0.1uA	1.3MHz	PWM		SOT-25
CXLE8122	PWM	2.2V-6.0V	17V	0.25V	400mA	82%	3mA	1.4MHz	PWM	100Hz-1KHz	SOT-26
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CXLE8123	PWM	2.2V-6.0V	17V	0.25V	700mA	82%	3mA	1.4MHz	PWM	100Hz-1KHz	SOT-26
CXLE8124	PWM	2.5V-6.0V	23V	0.25V	1.0A	88%	0.4mA	1.0MHz	PWM	100Hz-10KHz	SOT-26
CXLE8125	PWM	2.5V-6.0V	30V	0.104V	400mA	87%	0.2mA	1.2MHz	PWM	小于1KHz	SOT-26
CXLE8125B	PWM	2.7V-6.0V	38V	0.2V	1A	91%	5uA	0.8MHz	PWM		SOT-26
CXLE8127	PWM	2.7V-6.0V	37V	0.3V	900mA	90%	0.28mA	0.9MHz	PWM	100Hz-200KHz	SOT-26
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CXLE8129	PWM	3.0V-25V	28V	0.2V	2A	90%	1uA	1.2MHz	PWM	20KHz-1MHz	SOT-26
CXLE8129B	PWM	2.7V-6.5V	22V	0.2V	2.8A	95%	5uA	1MHz	PWM		SOT-26
CXLE8131	PWM	3.0V-6.0V	24V	0.2V	2.5A	88%	1uA	1.2MHz	PWM	10KHz-100KHz	SOT-26
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CXLE8115	PWM	10V-35V	200V	0.2V	扩流		400uA	200KHz	PWM		SOP-8
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CXLE8117	PWM	3.6V-26V	60V	0.22V	2A	92%		400KHz	PWM		SOP-8
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