High Power Synchronous Switching Regulator Controller Features: High Power Buck Converter from 5V or 3.3V Input Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing No External Sense Resistor Required Hiccup Mode Current Limit Protection Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output All N-Channel MOSFET Synchronous Driver Excellent Output Regulation: ±2% over Line, Load and Temperature Variations High Efficiency: Over 95% Possible Fast Transient Response Fixed 300kHz Frequency Operation Internal Soft-Start Circuit Quiescent Current: 1mA; 45µA in Shutdown

High Power Synchronous Switching Regulator Controller Features: High Power Buck Converter from 5V or 3.3V Input Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing No External Sense Resistor Required Hiccup Mode Current Limit Protection Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output All N-Channel MOSFET Synchronous Driver Excellent Output Regulation: ±2% over Line, Load and Temperature Variations High Efficiency: Over 95% Possible Fast Transient Response Fixed 300kHz Frequency Operation Internal Soft-Start Circuit Quiescent Current: 1mA; 45µA in Shutdown

High Power Synchronous Switching Regulator Controller Features: High Power Buck Converter from 5V or 3.3V Input Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing No External Sense Resistor Required Hiccup Mode Current Limit Protection Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output All N-Channel MOSFET Synchronous Driver Excellent Output Regulation: ±2% over Line, Load and Temperature Variations High Efficiency: Over 95% Possible Fast Transient Response Fixed 300kHz Frequency Operation Internal Soft-Start Circuit Quiescent Current: 1mA; 45µA in Shutdown

High Power Synchronous Switching Regulator Controller Features: High Power Buck Converter from 5V or 3.3V Input Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing No External Sense Resistor Required Hiccup Mode Current Limit Protection Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output All N-Channel MOSFET Synchronous Driver Excellent Output Regulation: ±2% over Line, Load and Temperature Variations High Efficiency: Over 95% Possible Fast Transient Response Fixed 300kHz Frequency Operation Internal Soft-Start Circuit Quiescent Current: 1mA; 45µA in Shutdown

Precision Triple Supply Monitor for PCI Applications Features: Simultaneously Monitors 5V, 3.3V and Adjustable Inputs Guaranteed Threshold Accuracy: ±0.75% Low Supply Current: 100µA Internal Reset Time Delay: 200ms Manual Pushbutton Reset Input Active Low and Active High Reset Outputs Active Low “Soft” Reset Output Power Supply Glitch Immunity Guaranteed Reset for Either VCC3 > 1V or VCC5 > 1V Meets PCI tFAIL Timing Specifications Rev 2.1 8-Pin SO and MSOP Packages

Precision Triple Supply Monitor for PCI Applications Features: Simultaneously Monitors 5V, 3.3V and Adjustable Inputs Guaranteed Threshold Accuracy: ±0.75% Low Supply Current: 100µA Internal Reset Time Delay: 200ms Manual Pushbutton Reset Input Active Low and Active High Reset Outputs Active Low “Soft” Reset Output Power Supply Glitch Immunity Guaranteed Reset for Either VCC3 > 1V or VCC5 > 1V Meets PCI tFAIL Timing Specifications Rev 2.1 8-Pin SO and MSOP Packages

Precision Triple Supply Monitor for PCI Applications Features: Simultaneously Monitors 5V, 3.3V and Adjustable Inputs Guaranteed Threshold Accuracy: ±0.75% Low Supply Current: 100µA Internal Reset Time Delay: 200ms Manual Pushbutton Reset Input Active Low and Active High Reset Outputs Active Low “Soft” Reset Output Power Supply Glitch Immunity Guaranteed Reset for Either VCC3 > 1V or VCC5 > 1V Meets PCI tFAIL Timing Specifications Rev 2.1 8-Pin SO and MSOP Packages

Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators Features: Maintains Constant Frequency at Low Output Currents Dual N-Channel MOSFET Synchronous Drive Programmable Fixed Frequency (PLL Lockable) Wide VIN Range: 3.5V to 36V Operation Ultrahigh Efficiency Very Low Dropout Operation: 99% Duty Cycle Low Dropout, 0.5A Linear Regulator for VPP Generation or Low Noise Audio Supply Built-In Power-On Reset Timer Programmable Soft Start Low-Battery Detector Remote Output Voltage Sense Foldback Current Limiting (Optional) Pin Selectable Output Voltage 5V Standby Regulator Active in Shutdown: IQ < 200 µA Output Voltages from 1.19V to 9V Available in 28- and 36-Lead SSOP Packages

Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators Features: Maintains Constant Frequency at Low Output Currents Dual N-Channel MOSFET Synchronous Drive Programmable Fixed Frequency (PLL Lockable) Wide VIN Range: 3.5V to 36V Operation Ultrahigh Efficiency Very Low Dropout Operation: 99% Duty Cycle Low Dropout, 0.5A Linear Regulator for VPP Generation or Low Noise Audio Supply Built-In Power-On Reset Timer Programmable Soft Start Low-Battery Detector Remote Output Voltage Sense Foldback Current Limiting (Optional) Pin Selectable Output Voltage 5V Standby Regulator Active in Shutdown: IQ < 200 µA Output Voltages from 1.19V to 9V Available in 28- and 36-Lead SSOP Packages

Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator Features: 3.3V or 5V Output Voltages 2V to 10V Input Voltage Range Up to 50mA Output Current Only Three External Capacitors Required Soft Start Limits Inrush Current at Turn-On Low Operating Current: 60µA Low Shutdown Current: 10µA Shutdown Disconnects Load from VIN Short-Circuit and Overtemperature Protected 650kHz Switching Frequency Low-Battery Comparator Active in Shutdown Available in SO-8 Package