cat3604 Catalyst Semiconductor, cat3604 Datasheet
cat3604
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cat3604 Summary of contents
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... Color LCD and keypad Backlighting Cellular Phones Handheld Devices DESCRIPTION The CAT3604 is a charge pump operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 4 LED pins. Operation at a fixed high frequency of 1MHz typical allows the use of very small value ceramic capacitors. ...
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... CAT3604 ORDERING INFORMATION PIN CONFIGURATION Note: The package exposed pad is electrically connected inside the package to GND and to pin 12. ...
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... > CAT3604 = 25˚C, VIN = 3.5V ...
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... Select CTR2 Figure 1: CAT3604 Functional Block Diagram BASIC OPERATION At power-up, the CAT3604 starts operation in 1x mode able to drive the programmed LED current, it continues in 1x mode. If the battery voltage drops to a level where the LED current cannot be met, the driver automatically switches into 1 ...
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... LED sink current is only about 20 A. When the following equation is true on any channel, the driver turns off the LED channel: VOUT - Note: The CAT3604 is designed to drive LEDs with forward voltage greater than 1V and is not compatible with resistive loads ...
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... CAT3604 TYPICAL CHARACTERISTICS V = 3.6V OUT INPUT VOLTAGE [V] INPUT VOLTAGE [V] Doc. No. 5008, Rev 24k , T = 25˚C, unless otherwise specified. SET AMB 6 TEMPERATURE [ ˚ C] TEMPERATURE [ C] ˚ © Catalyst Semiconductor, Inc. Characteristics subject to change without notice ...
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... TYPICAL CHARACTERISTICS V = 3.6V OUT INPUT VOLTAGE [V] INPUT VOLTAGE [V] © Catalyst Semiconductor, Inc. Characteristics subject to change without notice = 24k , T = 25˚C, unless otherwise specified. SET AMB 7 CAT3604 INPUT VOLTAGE [V] TEMPERATURE [ ˚ C] Doc. No. 5008, Rev. I ...
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... CAT3604 TYPICAL CHARACTERISTICS V = 3.6V OUT RSET [kohm] Doc. No. 5008, Rev 24k , T = 25˚C, unless otherwise specified. SET AMB 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice ...
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... A large via (metalized hole) centered in the square pad provides a low impedance connection to the ground plane on the opposite side of the PCB and allows the heat dissipated by the driver IC to spread out resulting in excellent thermal performance. 0.65 mm 2.25 mm 0.35 mm Figure 3: Recommended QFN 16 Package Land Pattern 9 CAT3604 Doc. No. 5008, Rev. I ...
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... CAT3604 PACKAGE DRAWING AND DIMENSIONS THIN QFN 16-LEAD 4MM X 4MM 4.00+0.10 (S) PIN 1 INDEX AREA DAP SIZE 2.5 X 2.5 2.10+0.10 0.30+0.05 1.95 REF. (2x) Doc. No. 5008, Rev. I Recommended Land Pattern 0.35 mm 0.20 REF. C0.35 0.55+0.10 0.0-0.05 0.65 TYP 10 0.65 mm 2.25 mm 0.75+0.05 NOTE: 1. ALL DIMENSIONS ARE IN mm. ANGLES IN DEGREES. 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. COPLANARITY SHALL NOT EXCEED 0 ...
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... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...