CAT3603
CAT3603 is 3-Channel LED Driver manufactured by onsemi.
Description
The CAT3603 is a charge pump LED driver operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 3 LED pins. Operation at a constant switching frequency of 1 MHz allows the use of very small value ceramic capacitors.
The CAT3603 drives 3 white LEDs in parallel and provides tightly matched regulated current to achieve uniform brightness in LCD backlighting applications. An external resistor, RSET, controls the output current level. The device can deliver up to 30 m A over an input voltage supply range from 3 V to 5.5 V, making it ideal for battery- powered applications.
LED dimming can be acplished using several methods; using a DC voltage to set the RSET pin current, applying a PWM signal on the EN pin, or adding a switched resistor in parallel with RSET. The EN input pin allows the device to be placed in power- down mode with “near- zero” quiescent current.
The device is available in the tiny 12- lead thin DFN 3 mm x 3 mm package with a max height of 0.8 mm.
Features
- Drives up to 3 LEDs
- Current Setting Resistor
- patible with Supply Voltage of 3 V to 5.5 V
- Power Efficiency up to 91%
- Output Current up to 30 m A per LED
- Fractional Pump 1x/1.5x
- Low Noise Input Ripple
- Fixed High Frequency Operation 1 MHz
- “Zero” Current Shutdown Mode
- Soft Start and Current Limiting
- Short Circuit Protection
- 12- lead TDFN 3 mm x 3 mm Package
- This Device is Pb- Free, Halogen Free/BFR Free and Ro HS pliant
Applications
- LCD Display Backlight
- Cellular Phones
- Digital Still Cameras
- Handheld Devices http://onsemi.
TDFN- 12 HV2 SUFFIX CASE 511AN
PIN CONNECTIONS
1 LED1 LED2 LED3 RSET
EN VOUT
GND C2+ C2- C1- C1+ VIN
(Top View)
MARKING DIAGRAM HABB
HABB = CAT3603 Device Code
ORDERING INFORMATION
Device
Package
CAT3603HV2
TDFN- 12 (Pb- Free)
Green-
- Lead Finish Matte- Tin
Shipping 2,000/Tape &...
