Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator Features: High Efficiency: Up to 95% Low Ripple (<35mVP-P) Burst Mode Operation; IQ = 40μA 2.25MHz Constant Frequency Operation High Switch Current: 0.7A and 1.2A No Schottky Diodes Required Low RDS(ON) Internal Switches: 0.35Ω Current Mode Operation for Excellent Line and Load Transient Response Short-Circuit Protected Low Dropout Operation: 100% Duty Cycle Ultralow Shutdown Current: IQ <1μA Output Voltages from 5V down to 0.6V Power-On Reset Output Externally Synchronizable Oscillator Optional External Soft-Start Small Thermally Enhanced MSOP and 3mm × 3mm DFN Packages

SMBus/IC Fan Speed Controller in SOT-23 Features: Complete SMBus/I²C™ Brushless DC Fan Speed Control System in a 5-Pin SOT-23 package 0.75Ω PMOS Linear Regulator with 180mA Output Current Rating 0V to 4.922V Output Voltage Range Controlled by a 6-Bit DAC Simple 2-Wire SMBus/I²C Interface 250ms Internal Timer Ensures Fan Start-Up Current Limit and Thermal Shutdown Fault Status Indication via SMBus Host Readback

5-Bit VID Voltage Programmer for AMD Opteron CPUs Features: Programs Regulator Output Voltage Range from 0.8V to 1.55V in 25mV Steps Programs a Wide Range of ADI DC/DC Converters with a 0.6V Reference ±0.35% Accurate Output Voltage Built-In 40k Pull-Up Resistors on VID Inputs Available in MSOP-10 Package

Dual 550kHz Synchronous 2-Phase Switching Regulator Controller Features: Two Independent Controllers in One Package Two Sides Run Out-of-Phase to Minimize CIN All N-Channel External MOSFET Architecture No External Current Sense Resistors Excellent Output Regulation: 1% Total Output Accuracy 550kHz Switching Frequency Minimizes External Component Size 1A to 25A Output Current per Channel High Efficiency over Wide Load Current Range Quiescent Current Drops Below 100µA in Shutdown Small 24-Pin Narrow SSOP Package

550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller Features: Dual Regulated Outputs: One Switching Regulator and One Linear Regulator Excellent DC Accuracy: ±1.5% for Switcher and ±2% for Linear Regulator External N-Channel MOSFET Architecture No External Current Sense Resistor Required Burst Mode® Operation at Light Load (LTC1704) Continuous Switching at Light Load (LTC1704B) Linear Regulator with Programmable Current Limit Linear Regulator with Programmable Start-Up Delay Low Shutdown Current: <150µA High Efficiency Over Wide Load Current Range PGOOD Flag Monitors Both Outputs Small 16-Pin Narrow SSOP Package

Isolated Secondary Synchronous Rectifier Controller Features: High Efficiency Over Wide Load Current Range ±0.8% Output Voltage Accuracy Dual N-Channel MOSFET Synchronous Drivers Pulse Transformer Synchronization Optocoupler Feedback Driver Programmable Current Limit Protection ±5% Margin Output Voltage Adjustment Adjustable Overvoltage Fault Protection Power Good Flag Auxiliary 3.3V Logic Supply Available in 16-Lead SSOP and SO Packages

15V, 2.5A Synchronous Buck-Boost DC/DC Converter Features:Regulated Output with VIN Above, Below or Equal to VOUT2.7V to 15V Input Voltage Range2.5V to 14V Output Voltage Range2.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM ModeOutput Current MonitorUp to 95% Efficiency750kHz Switching Frequency, Synchronizable Between 300kHz and 1.5MHzInternal N-Channel MOSFETsSelectable Burst Mode® Operation, IQ = 50μAShutdown Current < 1μAOvervoltage ProtectionOutput Disconnect in ShutdownInternal Soft-StartSmall, Thermally Enhanced 16-Lead (4mm × 5mm × 0.75mm) DFN and 20-Lead TSSOP Package

15V, 2.5A Synchronous Buck-Boost DC/DC Converter Features:Regulated Output with VIN Above, Below or Equal to VOUT2.7V to 15V Input Voltage Range2.5V to 14V Output Voltage Range2.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM ModeOutput Current MonitorUp to 95% Efficiency750kHz Switching Frequency, Synchronizable Between 300kHz and 1.5MHzInternal N-Channel MOSFETsSelectable Burst Mode® Operation, IQ = 50μAShutdown Current < 1μAOvervoltage ProtectionOutput Disconnect in ShutdownInternal Soft-StartSmall, Thermally Enhanced 16-Lead (4mm × 5mm × 0.75mm) DFN and 20-Lead TSSOP Package

15V, 2.5A Synchronous Buck-Boost DC/DC Converter Features:Regulated Output with VIN Above, Below or Equal to VOUT2.7V to 15V Input Voltage Range2.5V to 14V Output Voltage Range2.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM ModeOutput Current MonitorUp to 95% Efficiency750kHz Switching Frequency, Synchronizable Between 300kHz and 1.5MHzInternal N-Channel MOSFETsSelectable Burst Mode® Operation, IQ = 50μAShutdown Current < 1μAOvervoltage ProtectionOutput Disconnect in ShutdownInternal Soft-StartSmall, Thermally Enhanced 16-Lead (4mm × 5mm × 0.75mm) DFN and 20-Lead TSSOP Package

40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current Features: Regulates VOUT Above, Below or Equal to VIN Single Inductor Wide VIN Range: 2.2V to 40V Wide VOUT Range: 2.7V to 40V 1A Output Current in Buck Mode 0.5A Output Current, VIN = 3.6V, VOUT = 5V Programmable Average Output Current Up to 96% Efficiency Burst Mode® Operation, 30µA No-Load IQ Current Mode Control 1.2MHz Ultralow Noise PWM Accurate RUN Pin Threshold Thermally Enhanced, 16-lead 3mm × 5mm DFN and TSSOP Packages AEC-Q100 Qualified for Automotive Applications