CAT3612HV2-GT2 ON Semiconductor, CAT3612HV2-GT2 Datasheet - Page 11

• Manufacturer Part Number: CAT3612HV2-GT2
• Description: IC LED DVR CHRGE PUMP 2CH 12TDFN
• Manufacturer: ON Semiconductor
• Type: Photo Flash LEDr

Specifications of CAT3612HV2-GT2

• Topology: Linear (LDO), Switched Capacitor (Charge Pump)
• Number Of Outputs: 2
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Frequency: 800kHz ~ 1.3MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 7V
• Mounting Type: Surface Mount
• Package / Case: 12-VFDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 150mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Protection Mode
VOUT is internally limited to about 5.5 V. This is to prevent
the output pin from exceeding its absolute maximum rating.
die temperature exceeds about +165°C. When the device
temperature drops down by about 20°C, the device resumes
normal operation.
External Components
capacitors: two for decoupling input and output, and two for
the charge pump. Both capacitor types X5R and X7R are
recommended for the LED driver application. In the 1.5x
charge pump mode, the input current ripple is kept very low
by design, and an input bypass capacitor of 1 mF is sufficient.
In 1x mode, the device operating in linear mode does not
introduce switching noise back onto the supply.
If an LED becomes open−circuit, the output voltage
The driver enters a thermal shutdown mode as soon as the
The driver requires a total of four external 1 mF ceramic
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Recommended Layout
at a high frequency of 1 MHz. It is recommended to
minimize trace length to all four capacitors. A ground plane
should cover the area under the driver IC as well as the
bypass capacitors. Short connection to ground on capacitors
Cin and Cout can be implemented with the use of multiple
via. A copper area matching the TDFN exposed pad (GND)
must be connected to the ground plane underneath. The use
of multiple via improves the package heat dissipation.
In 1.5x charge pump mode, the driver switches internally
Figure 29. Recommended Layout