Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter Features: High Efficiency: Up to 94% Dual Outputs with 2 × 3A Output Current Capability Low Output Ripple Burst Mode® Operation: IQ = 130μA 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy Output Voltages Down to 0.6V Programmable Slew Rate at Switch Pins Low Dropout Operation: 100% Duty Cycle Shutdown Current ≤1μA Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable 0°/90°/180° (LTC3615) or selectable 140°/180° (LTC3615-1) Phase Shift Between Channels Fixed Internal and Programmable External Soft-Start Accurate Start-Up Tracking Capability DDR Memory Mode IOUT = ±1.5A Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter Features: 6A Output Current 2.25V to 5.5V Input Voltage Range Low Output Ripple Burst Mode® Operation: IQ = 75μA ±1% Output Voltage Accuracy Output Voltage Down to 0.6V High Efficiency: Up to 95% Low Dropout Operation: 100% Duty Cycle Programmable Slew Rate on SW Node Reduces Noise and EMI Adjustable Switching Frequency: Up to 4MHz Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable Pulse-Skipping/Forced Continuous/Burst Mode Operation with Adjustable Burst Clamp Programmable Soft-Start Inputs for Start-Up Tracking or External Reference DDR Memory Mode, IOUT = ±3A Available in a 24-Pin 3mm × 5mm QFN Thermally Enhanced Package

6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter Features: 6A Output Current 2.25V to 5.5V Input Voltage Range Low Output Ripple Burst Mode® Operation: IQ = 75μA ±1% Output Voltage Accuracy Output Voltage Down to 0.6V High Efficiency: Up to 95% Low Dropout Operation: 100% Duty Cycle Programmable Slew Rate on SW Node Reduces Noise and EMI Adjustable Switching Frequency: Up to 4MHz Optional Active Voltage Positioning (AVP) with Internal Compensation Selectable Pulse-Skipping/Forced Continuous/Burst Mode Operation with Adjustable Burst Clamp Programmable Soft-Start Inputs for Start-Up Tracking or External Reference DDR Memory Mode, IOUT = ±3A Available in a 24-Pin 3mm × 5mm QFN Thermally Enhanced Package

6A Monolithic Synchronous Step-Down Regulator for DDR Termination Features:±6A Output Current2.25V to 5.5V Input Voltage Range±10mV Output Voltage AccuracyOptimized for Low Output Voltages Down to 0.5VHigh EfficiencyIntegrated Buffer for VTTR = VDDQIN • 0.5Shutdown Current: <1µAAdjustable Switching Frequency: Up to 4MHzOptional Internal CompensationInternal Soft-StartPower Good Status OutputInput Overvoltage ProtectedThermally Enhanced 24-Pin 3mm × 5mm QFN Package

Dual 4MHz, 3A Synchronous Buck Converter for DDR Termination Features: DDR Power Supply, Termination and Reference High Efficiency: Up to 94% Dual Outputs with ±3A Output Current Capability 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy VTT Output Voltage Down to 0.5V Shutdown Current ≤1μA VTTR = VDDQIN/2, VFB2 = VTTR Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable 0°/90°/180° Phase Shift Between Channels Internal or External Soft-Start for VDDQ, Internal Soft-Start for VTT Power Good Status Outputs Low Profile 4mm × 4mm QFN-24 and TSSOP-24 Packages

Dual 4MHz, 3A Synchronous Buck Converter for DDR Termination Features: DDR Power Supply, Termination and Reference High Efficiency: Up to 94% Dual Outputs with ±3A Output Current Capability 2.25V to 5.5V Input Voltage Range ±1% Output Voltage Accuracy VTT Output Voltage Down to 0.5V Shutdown Current ≤1μA VTTR = VDDQIN/2, VFB2 = VTTR Adjustable Switching Frequency Up to 4MHz Internal or External Compensation Selectable 0°/90°/180° Phase Shift Between Channels Internal or External Soft-Start for VDDQ, Internal Soft-Start for VTT Power Good Status Outputs Low Profile 4mm × 4mm QFN-24 and TSSOP-24 Packages

400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit Features: Programmable Average Input Current Limit: ±5% Accuracy Dual Step-Down Outputs: Up to 96% Efficiency Low Noise Pulse-Skipping Operation at Light Loads Input Voltage Range: 2.5V to 5.5V Output Voltage Range: 0.6V to 5V 2.25MHz Constant-Frequency Operation Power Good Output Voltage Monitor for Each Channel Low Dropout Operation: 100% Duty Cycle Independent Internal Soft-Start for Each Channel Current Mode Operation for Excellent Line and Load Transient Response ±2% Output Voltage Accuracy Short-Circuit Protected Shutdown Current ≤ 1μA Available in Small Thermally Enhanced 10-Lead MS and 3mm × 3mm DFN Packages

400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit Features: Programmable Average Input Current Limit: ±5% Accuracy Dual Step-Down Outputs: Up to 96% Efficiency Low Noise Pulse-Skipping Operation at Light Loads Input Voltage Range: 2.5V to 5.5V Output Voltage Range: 0.6V to 5V 2.25MHz Constant-Frequency Operation Power Good Output Voltage Monitor for Each Channel Low Dropout Operation: 100% Duty Cycle Independent Internal Soft-Start for Each Channel Current Mode Operation for Excellent Line and Load Transient Response ±2% Output Voltage Accuracy Short-Circuit Protected Shutdown Current ≤ 1μA Available in Small Thermally Enhanced 10-Lead MS and 3mm × 3mm DFN Packages

400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit Features: Programmable Average Input Current Limit: ±5% Accuracy Dual Step-Down Outputs: Up to 96% Efficiency Low Noise Pulse-Skipping Operation at Light Loads Input Voltage Range: 2.5V to 5.5V Output Voltage Range: 0.6V to 5V 2.25MHz Constant-Frequency Operation Power Good Output Voltage Monitor for Each Channel Low Dropout Operation: 100% Duty Cycle Independent Internal Soft-Start for Each Channel Current Mode Operation for Excellent Line and Load Transient Response ±2% Output Voltage Accuracy Short-Circuit Protected Shutdown Current ≤ 1μA Available in Small Thermally Enhanced 10-Lead MS and 3mm × 3mm DFN Packages

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications

17V, 1A Synchronous Step-Down Regulator with 3.5A Quiescent Current Features: Wide VIN Range: 2.7V to 17V Wide VOUT Range: 0.6V to VIN 95% Max Efficiency Low IQ < 3.5μA, Zero-Current Shutdown Constant Frequency (1MHz/2.25MHz) Full Dropout Operation with Low IQ 1A Rated Output Current ±1% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Synchronizable to External Clock Pulse-Skipping, Forced Continuous, Burst Mode® Operation Internal Compensation and Soft-Start Overtemperature Protection Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin AEC-Q100 Qualified for Automotive Applications