| Description | The HT7937 is high efficiency boost converter with a constant current output to provide back light functions in handheld devices. Applications with series connected LEDs ensure constant and identical LED currents resulting in uniform brightness. A continuous LED output current is setup using the FB pin regulated voltage across an external sense resistor, RFB connected between the FB pin and ground... |
| Features |
· Integrated open-circuit protection · Over voltage protection · Up to 84% efficiency at VIN=3V, 3LEDs, · Low standby current: 0.1mA (typ.) (VSHDN=0V) · Matches LED current · Small value inductor and capacitors · Small outline SOT23-6 package ILED= 20mA · 1.2MHz fixed switching frequency Applications · Cellular phones · PDAs · DSCs · Handheld dev... |
| Datasheet |
 HT7937 Datasheet - 872.46KB |
