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CAT32 Datasheet(PDF) 3 Page - Catalyst Semiconductor |
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CAT32 Datasheet(HTML) 3 Page - Catalyst Semiconductor |
3 / 14 page CAT32 © Catalyst Semiconductor, Inc. 3 Doc. No. MD-5001 Rev. AD Characteristics subject to change without notice ABSOLUTE MAXIMUM RATINGS (1) Parameter Rating Unit VIN, LED, SHDN ¯¯¯¯¯ voltage 8 V SW voltage 20 V RSET voltage 1 V Storage Temperature Range -65 to +150 ºC Junction Temperature 125 ºC Lead Soldering Temperature (10 secs) 300 ºC ESD Rating – Human Body Model 2000 V RECOMMENDED OPERATING CONDITIONS Parameter Range Unit VIN 2 to 7 V Ambient Temperature Range -40 to +85 ºC Inductor L1 6.8 ±20% typical µH Input Capacitor C1 4.7 ±20% typical µF Output Capacitor C2 1.0 ±20% typical µF ILED with 1 to 4 LEDs in series 0 to 20 mA Typical application circuit with external components is shown on page 1. ELECTRICAL OPERATING CHARACTERISTICS Over recommended operating conditions unless otherwise specified. TA = 25ºC, VIN = 2V and V SHDN ¯¯¯¯¯ = 1.2V. Symbol Parameter Conditions Min Typ Max Unit IQ Quiescent Current VRSET = 0.2V 0.5 0.7 mA IGND Ground Current in Shutdown VSHDN ¯¯¯¯¯ = 0V 0.05 1 µA VLED LED Pin Voltage VIN < VOUT, ILED =15mA 120 180 mV ILED LED Current Adjust Range 5 40 mA RSET = 562Ω 33 38 45 RSET = 750Ω 25 30 36 RSET = 1.5kΩ 12.5 15 17.5 ILED Programmed LED Current RSET = 4.53kΩ 5 mA ILED LED Pin Current Temperature Coefficient ILED = 15mA -0.01 mA/°C VRSET RSET Pin Voltage RSET = 1.5kΩ 100 mV Shutdown Pin Logic High Level 0.85 V Shutdown Pin Logic Low Level 0.25 V fSW Boost Converter Frequency 0.8 1.2 1.6 MHz ISWL Switch Current Limit 400 550 780 mA VIN = 2V, ISW = 100mA 0.7 1.2 Ω RSW Switch Resistance VIN = 3V, ISW = 100mA 0.5 0.9 Ω Switch Leakage Current Switch Off, VSW = 5V 0.01 5 µA Efficiency Components shown on Figure 1 83 % Notes: (1) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. |
Número de pieza similar - CAT32_08 |
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Descripción similar - CAT32_08 |
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