CAT3647HV3-GT2 CATALYST SEMICONDUCTOR, CAT3647HV3-GT2 Datasheet - Page 4

• Manufacturer Part Number: CAT3647HV3-GT2
• Description: IC, LED DRIVER, CHARGE PUMP, TQFN-16
• Manufacturer: CATALYST SEMICONDUCTOR

Specifications of CAT3647HV3-GT2

• Led Driver Application: LCD Display Backlight, Digital Still Cameras
• No. Of Outputs: 3
• Output Current: 30mA
• Output Voltage: 7V
• Input Voltage: 2.5V To 5.5V
• Topology: Charge Pump
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LED Current Setting
connected between the RSET pin and ground. Table 5 lists
standard resistor values for several LED current settings.
Table 4. RECOMMENDED EN/DIM TIMING
(For 2.4 V ≤ V
Table 5. RESISTOR RSET AND LED CURRENT
T
The full scale LED current is set by the external resistor
Symbol
PWRDWN
T
T
T
LED
Full Scale LED Current [mA]
LO
HI
EN/DIM
Current
LED
IN
EN/DIM program low time
EN/DIM program high time
EN/DIM low time to shutdown
LED current settling time
≤ 5.5 V, over full ambient temperature range -40°C to +85°C.)
10
15
20
25
30
Shutdown
2
5
T
LED
Name
Figure 2. EN/DIM Digital Dimming Timing Diagram
100%
T
LO
RSET [kW]
T
37.4
14.7
7.50
4.99
3.74
3.00
2.49
HI
97% 93%
http://onsemi.com
32 Levels
Conditions
4
3%
0%
100%
Min
0.2
0.2
1.5
T
PWRDWN
Typ
40
Shutdown
Max
100
Units
ms
ms
ms
ms