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目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载(PDF文档)
The JTSU8665 IS step-up DC/DC converters designed to drive up to 8 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 externally on competing devices.
Additional features include output voltage limiting when LEDs are disconnected,
onepin shutdown and dimming control. The JTSU8665 has internal soft-start.
The JTSU8665 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 JTSU8665 is
available in low profile(1mm)6-lead
■ 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
■Cellular Phones
■ PDAs, Handheld Computers
■ Digital Cameras
■ MP3 Players
■ GPS Receivers
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系列名称 | 特点 | 输入电压 (V) | 输出电压 (V) | 最大输出电流 (mA) | 振荡频率 | 封装 | DATA SHEET | |||
最小 | 最大 | 最小 | 标准 | 最大 | ||||||
JTSU8665 | PWM异步升压恒流LED驱动:效率85%、(串联8灯或3串7并) | 2.5V | 10V | 可调 | 600 | 1.2MHZ | SOT23-6 | |||
JTSU8602 | PWM异步升压恒流LED驱动:效率85%、(3串13并) | 2.5V | 6V | 可调 | 1300 | 1.3MHZ | QFN8/SOT23-6 | |||
JTSU8608 | PWM异步升压恒流LED驱动:效率85%、(串联4灯) | 2.5V | 10 | 可调 | 300 | 1.2MHZ | SOT23-6 |