LTC3230EUD#PBF Linear Technology, LTC3230EUD#PBF Datasheet
LTC3230EUD#PBF
Specifications of LTC3230EUD#PBF
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LTC3230EUD#PBF Summary of contents
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... Multi-LED Driver and Dual LDO Supplies for Cell Phone, PDA, Digital Camera and PND Applications , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6411531. TYPICAL APPLICATION ...
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... Storage Temperature Range ................... –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3230EUD#PBF LTC3230EUD#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T high, ENLDO1 = ENLDO2 = low, unless otherwise noted. PARAMETER CPO Short Circuit Detection Threshold Voltage Charge Pump (CPO) 1x Mode Output Voltage 1.5x Mode Output Voltage 2x Mode Output ...
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LTC3230 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Based on ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1.5x Mode CPO Voltage vs Load Current 4 1μ 3.5V 4 3.6V IN 4.2 4 ...
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LTC3230 TYPICAL PERFORMANCE CHARACTERISTICS MLED/SLED Pin Current vs MLED/SLED Pin Voltage 3. 0.04 0.08 0.12 0.16 MLED/SLED PIN VOLTAGE (V) 3230 G16 LDO2 Dropout Voltage vs Load Current 0.35 ...
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PIN FUNCTIONS CPO (Pin 1): Output of the Charge Pump Used to Power All LEDs. This pin is enabled or disabled using the ENM and ENS inputs. A 1μF X5R or X7R ceramic capacitor should be connected to ground. ENLDO1, ...
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LTC3230 BLOCK DIAGRAM 900kHz OSCILLATOR – – R SET 4 ENM 11 50ns FILTER ENS 5 50ns FILTER ENLDO2 3 ENLDO1 2 LDO1 OUT SELECT LDO2 OUT SELECT 8 ...
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OPERATION Power Management The LTC3230 uses a switched capacitor charge pump to boost CPO to as much as 2 times the input voltage up to 5V. The part starts mode. In this mode, V connected directly to ...
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LTC3230 OPERATION Charge Pump Soft-Start In shutdown, CPO is disconnected from V down through a 14.3k resistor. When enabled, a weak switch connects V to CPO. This allows CPO output to prevent large charging currents. The LTC3230 ...
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OPERATION charge pump function. Driving ENLDO1 and ENLDO2 high enable LDO1 and LDO2 respectively. When the charge pump is enabled, each LDO consumes an additional 60μA (typical) from the charge pump is not enabled, one IN LDO ...
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LTC3230 APPLICATIONS INFORMATION V and CPO Capacitor Selection IN The style and value of the capacitors used with the LTC3230 determine several important parameters such as regulator control loop stability, output ripple, charge pump strength and minimum start-up time. To ...
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APPLICATIONS INFORMATION of capacitor is needed to ensure minimum capacitances at all temperatures and voltages. Table 3 shows a list of ceramic capacitor manufacturers and how to contact them. Table 3. Recommended Capacitor Vendors AVX xww.avxcrp.com Kemet www.kemet.com Murata www.murata.com ...
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LTC3230 APPLICATIONS INFORMATION In 2x boost mode as well, the effi ciency is similar to that of a linear regulator with an effective input voltage of 2 times the actual input voltage ideal 2x charge pump, the power ...
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... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UD Package 20-Lead Plastic QFN (3mm × ...
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... D3 D5 MLED4 DISABLED 3230 TA02 : 1.8V to 20V 40μA, I < 1μ Adj., MS10 OUT = 60μ 60μA/65μ 2.9V to 4.5V, 1x/1.5x/2x Boost Modes, 4mm × 2.9V to 4.5V, 1x/1.5x/2x Boost Modes, Exponential IN LT 0108 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 3230fa ...