LTM4611 elecTrical characTerisTicsNote 1: Stresses beyond those listed under Absolute Maximum Ratings range. Note that the maximum ambient temperature consistent with may cause permanent damage to the device. Exposure to any Absolute these specifications is determined by specific operating conditions in Maximum Rating condition for extended periods may affect device conjunction with board layout, the rated package thermal resistance and reliability and lifetime. other environmental factors. Note 2: The LTM4611 is tested under pulsed load conditions such that Note 3: Consistent with Pb-free 260°C peak IR reflow soldering profiles. TJ ≈ TA. The LTM4611E is guaranteed to meet performance specifications See Application Note 100. over the 0°C to 125°C operating junction temperature (TJ) range. Note 4: See output current derating curves for different VIN, VOUT and TA. Specifications over the full –40°C to 125°C operating junction temperature Note 5: The minimum on-time condition is specified for a peak-to-peak range are assured by design, characterization and correlation with inductor ripple current of ~40% of I statistical process controls. The LTM4611I is guaranteed to meet MAX Load. (See the Typical Applications section) specifications over the full –40°C to 125°C operating junction temperature Typical perForMance characTerisTicsEfficiency vs Load Current atEfficiency vs Load Current atEfficiency vs Load Current at1.5VIN, Forced Continuous Mode1.8VIN, Forced Continuous Mode2.5VIN, Forced Continuous Mode 95 95 95 1.2VOUT 1.0VOUT 0.9VOUT 90 0.8VOUT 90 90 85 85 85 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 1.5VOUT 80 80 1.2VOUT 80 1.0VOUT 1.8VOUT 1.0VOUT 0.9VOUT 1.5VOUT 0.9VOUT 0.8VOUT 1.2VOUT 0.8VOUT 75 75 75 0 3 6 9 12 15 0 3 6 9 12 15 0 3 6 9 12 15 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 4611 G01 4611 G02 4611 G03 Efficiency vs Load Current atEfficiency vs Load Current at3.3VIN, Forced Continuous Mode5VIN, Forced Continuous ModeBurst Mode Efficiency 95 95 95 90 85 3.3VIN TO 1.5VOUT 90 90 80 75 70 5VIN TO 1VOUT 65 85 85 60 55 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 50 80 2.5VOUT 80 3.3V 1.2V OUT OUT 45 1.8VOUT 1.0VOUT 2.5V 1.0V OUT OUT 40 1.5VOUT 0.9VOUT 1.8V 0.9V OUT OUT 1.2V 35 OUT 0.8VOUT 1.5V 0.8V OUT OUT 75 75 30 0 3 6 9 12 15 0 3 6 9 12 15 0.1 1 10 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 4611 G06 4611 G04 4611 G05 4611fb For more information www.linear.com/LTM4611 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Photograph Package Description Revision History Typical Application Related Parts