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CAT3616 Datasheet

6-Channel Charge Pump LED Driver

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CAT3616
6-Channel Charge Pump
LED Driver with EZDimt
Description
The CAT3616 is a high efficiency 1x/1.5x fractional charge pump
with programmable dimming current in six LED channels. To ensure
uniform brightness in LCD backlight applications, each LED channel
delivers an accurate regulated current.
Low noise and input ripple is achieved by operating at a constant
switching frequency of 1 MHz which allows the use of small external
ceramic capacitors. The 1x/1.5x fractional charge pump supports a
wide range of input voltages from 3 V to 5.5 V with efficiency up to
91%, and is ideal for LiIon battery powered devices.
Two groups of LEDs, main (MAIN1 to MAIN4) and sub (SUB1 and
SUB2) are programmable through the ENM (active low) and ENS
inputs. Independent current from 1 mA to 31 mA with a 1 mA step are
set by toggling the ENM and ENS inputs. The enable EN input pin
allows to shutdown the device with zero quiescent current.
The device is available in a 16pad TQFN package with a max
height of 0.8 mm.
Features
6 LED Channels with Tight Matching
Independent Main and Sub Channels
1wire EZDimt Programmable LED Current
Accurate 1 mA Dimming Level
Power Efficiency up to 91%
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
Thermal Shutdown Protection
16pad TQFN 4 mm x 4 mm Package
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Main and Subdisplay Backlight
Color LCD and Keypad Backlighting
Cellular Phones
Handheld Devices
Digital Cameras
© Semiconductor Components Industries, LLC, 2010
1
April, 2010 Rev. 3
http://onsemi.com
1
TQFN16
HV4 SUFFIX
CASE 510AE
PIN CONNECTIONS
1
MAIN1
ENM
ENS
EN
TAB
is
GND
SUB2
GND
C2+
C2
(Top View)
MARKING DIAGRAMS
G616
AXXX
YMCC
CDAH
AXXX
YMCC
G616 = CAT3616HV4T2
CDAH = CAT3616HV4GT2
A = Assembly Location
XXX = Last Three Digits of Assembly Lot Number
Y = Production Year (Last Digit)
M = Production Month (1-9, A, B, C)
CC = Country of Origin (Two Digit)
Note: Two digit code for country of origin:
Thailand = TH
Malaysia = MY
ORDERING INFORMATION
Device
CAT3616HV4T2
(Note 1)
Package
TQFN16
(PbFree)
Shipping
2,000/
Tape & Reel
CAT3616HV4GT2 TQFN16
(Note 2)
(PbFree)
2,000/
Tape & Reel
1. MatteTin Plated Finish (RoHScompliant).
2. NiPdAu Plated Finish (RoHScompliant).
Publication Order Number:
CAT3616/D


  ON Semiconductor Electronic Components Datasheet  

CAT3616 Datasheet

6-Channel Charge Pump LED Driver

No Preview Available !

CAT3616
NOTE: Unused LED channels must be connected to VOUT.
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN, LEDxx voltage
6
V
VOUT, C1±, C2± voltage
7
V
EN, ENM, ENS voltage
VIN + 0.7 V
V
Storage Temperature Range
65 to +160
°C
Junction Temperature Range
40 to +150
°C
Lead Temperature
300
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter
VIN
Ambient Temperature Range
ILED per LED pin
IOUT Total Output Current
Range
Unit
3 to 5.5
V
40 to +85
°C
0 to 31
mA
0 to 150
mA
NOTE: Typical application circuit with external components is shown above.
http://onsemi.com
2


Part Number CAT3616
Description 6-Channel Charge Pump LED Driver
Maker ON Semiconductor
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CAT3616 Datasheet PDF






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