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Part Number: LM3595
Description: The LM3595 is a parallel white-LED driver that is capable of driving four white LEDs. It can supply a ...
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LM3595
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General Description
LM3595 General Description
The LM3595 is a parallel white-LED driver that is capable of driving four white LEDs. It can supply a total output current of 100mA over an input voltage range of 3.0V to 5.5V.
The amount of constant current sourced to the outputs is user selectable using one external sense resistor. LM3595 typically draws 0.03µA when placed in shutdown, and 200µA when operating in the no-load condition. If any of the outputs are not used, leave the pin(s) unconnected. Brightness can be controlled by both analog and PWM techniques. A voltage between 0V and 3V may be applied to the BRGT pin to vary the current. Output current will linearly track the voltage applied to the BRGT pin.
An active-low level must be present on the BR-ON pin for analog brightness control to be disabled. Alternatively, a PWM signal can be applied to the EN pin to vary the perceived brightness of the LED. The LM3595 uses an active-high enable level. The LM3595 is available in National's LLP-10 package.
LM3595 Maximum Ratings
| VIN EN, BR-ON, BRGT Junction Temperature (TJ-MAX- Continuous Power Dissiation (Note 3) Storage Temperature Range Lead Temperature (Soldering, 5 Sec.) ESD Rating (Note 4) Human-body model Machine model |
−0.3V to 6.0V -0.3V to (VIN+ 0.3V) w/ 6.0V max 150°C Internally Limited -65°C to 150°C 260°C 2 kV 200V |
LM3595 Features
Regulated IOUT with ± 0.5% matching between constant current outputs
Drives one, two, three or four white LED's with no bias resistors
3.0V to 5.5V Input voltage
Up to 100mA output current
Active-High Enable Pin
Analog Brightness Control
Very small solution size
LLP-10 package: 3.0mm x 3.0mm x 0.8mm
Very Low Shutdown current (0.03µA typ.)
Drives one, two, three or four white LED's with no bias resistors
3.0V to 5.5V Input voltage
Up to 100mA output current
Active-High Enable Pin
Analog Brightness Control
Very small solution size
LLP-10 package: 3.0mm x 3.0mm x 0.8mm
Very Low Shutdown current (0.03µA typ.)
LM3595 Typical Application
Portable devices using white or blue LEDs with display and backlight or frontlight
Keypad LEDs
Strobe LEDs
Keypad LEDs
Strobe LEDs
LM3595 Connection Diagram
LM3595
PDF/DataSheet Download
- Datasheet: LM3595
- File Size: 200638 KB
- Manufacturer: NATIONAL
- Click here to Download
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