positive to negative voltage IC

[necromancer]

have any ic can change +5v dc to -5v dc

 

[aNdreiBuuu]

for low power apps you can use MAX1044/ICL7660 (Switched-Capacitor Voltage Converters) **broken link removed**
for more power you can use any switchin IC source like MC34063 in voltage inverting configuration (for this you need an inductor).

hope this helps,
//a

 

[rkodaira]

If you need more than 20mA (ICL7660 and HT7660) on the negative voltage, you can use also the MAX660A that can supply up to 100mA and converts from +5.5V to -5.5V.

 

[vdaniel]

If you need very low ripple and noise and if -4.1V is enough, then very good proven (in sensitive photo sensor) is LTC1550L from Linear Technology.

Varuzhan