CAT3606HV4-T2 ON Semiconductor, CAT3606HV4-T2 Datasheet - Page 9

• Manufacturer Part Number: CAT3606HV4-T2
• Description: IC LED DRVR WHITE BCKLGT 16-TQFN
• Manufacturer: ON Semiconductor
• Type: Backlight, White LEDr

Specifications of CAT3606HV4-T2

• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.3MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Number Of Segments: 6
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 3606HV4-T2; CAT3606HV4-T2TR

Recommended Layout
1 MHz switching frequency operation requires to minimize
trace length and impedance to ground on all 4 capacitors. A
ground plane should cover the area on the bottom side of the
PCB opposite to the IC and the bypass capacitors.
Capacitors Cin and Cout require short connection to ground
which can be done with multiple vias as shown on Figure 24.
A square copper area matches the QFN16 exposed pad
(GND) and must be connected to the ground plane
underneath. The use of multiple via will improve the heat
dissipation.
When the driver is in the 1.5x charge pump mode, the
5
4
3
2
1
0
0
Figure 21. Foldback Current Limiting
100
(V
IN
= 3.6 V, EN = V
OUTPUT CURRENT (mA)
ENM & ENS
200
50mA/div
Tot. LED
Current
VOUT
1V/div
5V/div
IN
Figure 23. PWM Dimming at 1 kHz on ENM and ENS
, ENM = ENS = GND, C
300
1x Mode
TYPICAL CHARACTERISTICS
400
http://onsemi.com
IN
500
200 msec/div
= C
OUT
9
= 1 mF, T
1.24
1.22
1.20
1.18
1.16
−50
Figure 22. RSET Pin Voltage vs. Temperature
AMB
−25
= 25°C, unless otherwise specified.)
Figure 24. PCB Layout
0
TEMPERATURE (°C)
25
50
75
100
125