LED Drivers
•Built-in Step-up Circuit
Model No.
Function
Features
No. of output circuits
Number of LEDs
Booster method
Constant current circuit
Switching transistor
Input voltage range
(V)
Output*1 current
(mA) MAX.
Oscillation frequency
(Hz)
TYP.
Package
IR2E58U
White LED driver for backlight
• Capable of driving a maximum of 96 LEDs with 12 LEDs (in series) per channel
• Built-in step-up DC-DC converter
• High oscillation frequency (1.5 MHz) makes use of a small coil possible
• Capable of controlling brightness using PWM control
• Step-up output control according to LED-Vf
8
96
PWM
4.5 to
28
40/ch
500 k to
1.5 M
24HQFN
IR2E71Y
LED driver for backlight and call alert display (auto brightness adjustment)
• 2 ch (11 LEDs x 2 ch) LED driver for backlight
• Auto brightness adjustment backlight LED
• 6 ch RBG LED driver for illumination
• Built-in switching regulator for LCD backlight
• Built-in LCD controller power supply (+5.8 V / –5.8 V MAX.)
• LDO 1 ch
• Interface for digital-output proximity sensor with ambient light sensor
• Built-in general purpose input/output port (7 ch MAX.)
Backlight
2
RGB
6
Backlight
22
RGB
6
PWM
3.0 to 4.5
Backlight
25.5/ch
RGB
12.7/ch
10 k
to
1 M
35WL-CSP
IR2E67M
White LED driver for backlight
• Built-in 10 ch. constant-current control amplifier (external output transistor)
• Enables driving LEDs up to external transistor voltage limit
• Built-in timing controller for lighting
• Wider range of PWM brightness control possible, from simultaneous total output
control to local dimming
• Step-up output control according to LED-Vf
10
*2
*3
*4
External
4.5 to
5.5
*5
80LQFP-
1420
IR2E70N
White LED driver for backlight
• Built-in step-up DC-DC controller for 2 ch individual control
• Capable of 2 ch individual PWM brightness control
• LED current value adjustable by external signal (voltage input / PWM signal)
• Brightness control possible at high contrast ratio 3000:1
• Step-up output control according to LED-Vf
2
*2
PWM
*6
External
4.5 to
5.5
8 to
28
*5
100 k to
500 k
24SSOP
*1 Constant current (MAX.)
*2 Determined by external transistor voltage limit.
*3 Built-in feedback voltage-generating circuit for external power supply.
*4 Built-in constant-current control amplifier (external output transistor)
*5 Determined by external resistor.
*6 Constant current can be controlled by LED anode voltage control.
※Notice
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books, etc.
Except where specially indicated, models listed on this page comply with the RoHS Directive*. For details, please contact SHARP.
*RoHS Directive: Prohibits use of lead, cadmium, hexavalent chromium, mercury and specific brominated flame retardants(PBBs and PBDEs), with certain exceptions.
Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.