CAT3224HV3-GT2 ON Semiconductor, CAT3224HV3-GT2 Datasheet

IC LED DRIVER PHOTO FLASH 16TQFN

CAT3224HV3-GT2

Manufacturer Part Number
CAT3224HV3-GT2
Description
IC LED DRIVER PHOTO FLASH 16TQFN
Manufacturer
ON Semiconductor
Type
Photo Flash LEDr
Datasheet

Specifications of CAT3224HV3-GT2

Topology
Switched Capacitor (Charge Pump)
Number Of Outputs
2
Internal Driver
Yes
Type - Primary
Flash/Torch
Frequency
800kHz
Voltage - Supply
2 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-TFQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
200mA, 2A
Internal Switch(s)
Yes
Operating Supply Voltage (typ)
1.8/2.5/3.3V
Number Of Segments
2
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Pin Count
16
Mounting
Surface Mount
Operating Supply Voltage
2.5 V to 5.5 V
Maximum Supply Current
2 A
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
-
Efficiency
-
Lead Free Status / Rohs Status
Compliant
Other names
CAT3224HV3-GT2TR
CAT3224
4 Amp Supercapacitor
Flash LED Driver
Description
which also supports the charging function for a dual−cell
supercapacitor applications. Ideal for Li−ion battery−powered
systems, it delivers up to 4 A LED flash pulses, far beyond the peak
current capability of the battery.
to a nominal voltage of 5.4 V, while an active balance control circuit
ensures that both capacitor cell voltages remain matched. The nominal
charging current to be drawn from the battery is set by an external
resistor tied to the RC pin.
resistors provide the adjustment for the maximum flash mode current
(up to 4 A) and the torch mode current (up to 400 mA). A built−in
safety timer automatically terminates the flash pulse beyond a
maximum duration of 300 ms.
device is fully protected against external resistor programming faults
and fully supports reverse output voltage for all conditions.
package with a max height of 0.8 mm.
Features
Applications
© Semiconductor Components Industries, LLC, 2009
December, 2009 − Rev. 0
The CAT3224 is a very high−current integrated flash LED driver
Dual−mode 1x/2x charge pump charges the stacked supercapacitor
The driver also features two matched current sources. External
In addition to thermal shutdown and overvoltage protection, the
The device is packaged in the tiny 16−pad TQFN 3 mm x 3 mm
Compliant
2 Channels at 2 A Each in Flash Mode
2 Channels at 200 mA Each in Torch Mode
Adjustable Charge Current Limit up to 1000 mA
Flash/Torch Current Separate Adjustment
Dual−mode 1x/2x Charge Pump
Dual Cell Supercapacitor Balancing
Flash Safety Timer and Ready Flag
Supercapacitor Continuous Charging
Shutdown CAP Leakage 3 mA
“Zero” Current Shutdown Mode
80 mA Standby Current (I
Over−voltage, Over−current Limiting
Thermal Shutdown Protection
Small 3 mm x 3 mm, 16−pad TQFN Package
This Device is Pb−Free, Halogen Free/BFR Free and RoHS
High Power LED Flash
Systems with High Peak Loads
VIN
)
1
Note: NiPdAu Plated Finish (RoHS−compliant)
CAT3224HV3−GT2 TQFN−16
Device
CAP
CAP
BAL
RF
ORDERING INFORMATION
JAAT = Specific Device Code
MARKING DIAGRAM
PIN CONNECTIONS
http://onsemi.com
1
CASE 510AD
HV3 SUFFIX
(Top View)
TQFN−16
(Pb−Free)
Package
JAAT
Publication Order Number:
Tape & Reel
Shipping
RT
RC
LEDA
LEDB
2,000/
CAT3224/D

Related parts for CAT3224HV3-GT2

CAT3224HV3-GT2 Summary of contents

Page 1

... PIN CONNECTIONS 1 RF BAL CAP CAP (Top View) MARKING DIAGRAM JAAT JAAT = Specific Device Code ORDERING INFORMATION Device Package CAT3224HV3−GT2 TQFN−16 (Pb−Free) Note: NiPdAu Plated Finish (RoHS−compliant LEDA LEDB Shipping 2,000/ Tape & Reel Publication Order Number: CAT3224/D ...

Page 2

VIN (2 5.5 V) 826 W Table 1. ABSOLUTE MAXIMUM RATINGS Parameter VIN, RC, RF, RT voltage CAP, CP, CN voltage CHRG, FLASH, TORCH, FLAG voltage (Note 1) BAL, LEDA, LEDB Storage Temperature Range Junction Temperature Range Lead ...

Page 3

Table 5. ELECTRICAL OPERATING CHARACTERISTICS Symbol Name I Quiescent Current on VIN pin (I QVIN I Quiescent Current on CAP pin QCAP I Shutdown Current QSHDN G Flash Gain ( FLASH FLASH RF G Torch Gain (I ...

Page 4

Cap Voltage and Flag Output The timing diagram in Figure 2 shows the CAP output voltage and the FLAG output in charge mode (with CHRG input high). CAP VOLTAGE V C OFF Charge Current 0 A FLAG ...

Page 5

0. 100 3.0 3.5 4.0 4.5 INPUT VOLTAGE (V) Figure 3. Idle Quiescent Current vs. Input Voltage 10 1.0 0.1 0.1 1.0 R (kW) F Figure 5. Flash ...

Page 6

0. 630 620 610 600 590 580 570 0 0.5 1.0 I (A) FLASH Figure FLASH 630 620 610 600 590 580 570 0 50 100 I ...

Page 7

0. CHRG 5V/div CAP 2V/div Input Current 1A/div 1s/div Figure 13. Charge Cycle Input Current CHRG 5V/div CAP 2V/div Input Current 500mA/ div 4s/div Figure 15. Charge Cycle, 300 mA ...

Page 8

Table 6. PIN DESCRIPTION Pin # Name 1 RF Flash Current Setting Resistor terminal 2 BAL Active Supercapacitor Balance Control 3, 4 CAP Supercapacitor Positive Connection 5 CHRG Charge Supercapacitor Enable 6 FLASH Flash Enable 7 TORCH Torch Enable 8 ...

Page 9

Block Diagram Figure 18. Functional Block Diagram http://onsemi.com 9 ...

Page 10

Basic Operation The CAT3224 integrates in a single device two main functions: a dual cell supercapacitor charger and an LED driver. Two LED channels provide accurately regulated and matched current per channel. The charging mode is ...

Page 11

Figure 19. CAP Output Transient during 4 A Flash Flash Rate Between two consecutive flash pulses, the supercapacitor needs some time to recharge. The supercapacitor time needed to fully recharge after a flash pulse is a function of the flash ...

Page 12

D PIN#1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A3 0.20 REF b 0.18 0.25 D 2.90 3.00 D2 1.40 −−− E 2.90 3.00 E2 1.40 −−− e 0.50 BSC L 0.30 0.40 Notes: ...

Page 13

... Product Number (Optional) 3224 4. The device used in the above example is a CAT3224HV3−GT2 (TQFN, NiPdAu, Tape & Reel, 2,000 / Reel). 5. All packages are RoHS−compliant (Lead−free, Halogen−free). 6. The standard lead finish is NiPdAu. 7. For additional package and temperature options, please contact your nearest ON Semiconductor sales office. ...

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