Programmable Quad Supply Monitor with Adjustable Reset Timer Features: Simultaneously Monitors Four Supplies 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and/or ±Adjustable Voltage Thresholds Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature Low Supply Current: 43µA Typ Adjustable Reset Time Small MSOP and 3mm × 3mm DFN Packages Manual Reset Pin Open-Drain RST Output (LTC2900-1) Push-Pull RST Output (LTC2900-2) Power Supply Glitch Immunity Guaranteed RST for VCC ≥ 1V

Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers Features: Simultaneously Monitors Four Supplies 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and/or ±Adj Voltage Thresholds Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature Selectable Supply Tolerance: 5% and 10% Below Monitored Voltage (LTC2901-3/LTC2901-4) Low Supply Current: 43µA Typ Adjustable Reset Time Adjustable Watchdog Time Open-Drain RST Output (LTC2901-1/LTC2901-3) Push-Pull RST Output (LTC2901-2/LTC2901-4) Individual Nondelayed Monitor Output for Each Supply Power Supply Glitch Immunity Guaranteed RST for VCC ≥ 1V 16-Lead Narrow SSOP Package

Precision Dual Supply Monitor with Pin-Selectable Thresholds Features: Monitors Two Inputs Simultaneously Nine Threshold Combinations Three Supply Tolerances (5%, 7.5%, 10%) Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature Internal VCC Auto Select Power Supply Glitch Immunity 200ms Reset Time Delay (LTC2904 Only) Adjustable Reset Time Delay (LTC2905 Only) Open Drain RST Output Guaranteed RST for V1 ≥ 1V or V2 ≥ 1V Low Profile (1mm) SOT-23 (ThinSOT™) and Plastic (3mm × 2mm) DFN Packages

Precision Dual Supply Monitor with Pin-Selectable Thresholds Features: Monitors Two Inputs Simultaneously Nine Threshold Combinations Three Supply Tolerances (5%, 7.5%, 10%) Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature Internal VCC Auto Select Power Supply Glitch Immunity 200ms Reset Time Delay (LTC2904 Only) Adjustable Reset Time Delay (LTC2905 Only) Open Drain RST Output Guaranteed RST for V1 ≥ 1V or V2 ≥ 1V Low Profile (1mm) SOT-23 (ThinSOT™) and Plastic (3mm × 2mm) DFN Packages

Single UV/OV Voltage Monitor Features: Monitors Single Voltage Adjustable UV and OV Trip Values Guaranteed Threshold Accuracy: ±1.5% Power Supply Glitch Immunity Adjustable Reset Timeout with Timeout Disable 29µA Quiescent Current Open-Drain OV and UV Outputs Guaranteed OV and UV for VCC ≥ 1V Available in 8-Lead ThinSOT™ and (3mm × 2mm) DFN Packages

Single UV/OV Voltage Monitor Features: Monitors Single Voltage Adjustable UV and OV Trip Values Guaranteed Threshold Accuracy: ±1.5% Power Supply Glitch Immunity Adjustable Reset Timeout with Timeout Disable 29µA Quiescent Current Open-Drain OV and UV Outputs Guaranteed OV and UV for VCC ≥ 1V Available in 8-Lead ThinSOT™ and (3mm × 2mm) DFN Packages

Single UV/OV Voltage Monitor Features: Monitors Single Voltage Adjustable UV and OV Trip Values Guaranteed Threshold Accuracy: ±1.5% Power Supply Glitch Immunity Adjustable Reset Timeout with Timeout Disable 29µA Quiescent Current Open-Drain OV and UV Outputs Guaranteed OV and UV for VCC ≥ 1V Available in 8-Lead ThinSOT™ and (3mm × 2mm) DFN Packages

Synchronous Rectifier Driver for Forward Converters Features: N-Channel Synchronous Rectifier MOSFET Driver Programmable Timeout Protection Reverse Inductor Current Protection Pulse Transformer Synchronization Wide VCC Supply Range: 4.5V to 11V 15ns Rise/Fall Times at VCC = 5V, CL = 4700pF Undervoltage Lockout Small SO-8 Package

Synchronous Rectifier Driver for Forward Converters Features: N-Channel Synchronous Rectifier MOSFET Driver Programmable Timeout Protection Reverse Inductor Current Protection Pulse Transformer Synchronization Wide VCC Supply Range: 4.5V to 11V 15ns Rise/Fall Times at VCC = 5V, CL = 4700pF Undervoltage Lockout Small SO-8 Package

Standalone Li-Ion Switch Mode Battery Charger Features: Wide Input Supply Range: 4.7V to 22V – 4.2 Version 8.9V to 22V – 8.4 Version High Efficiency Current Mode PWM Controller with 500kHz Switching Frequency ±1% Charge Voltage Accuracy End-of-Charge Current Detection Output 3 Hour Charge Termination Timer Constant Switching Frequency for Minimum Noise ±5% Charge Current Accuracy Low 10µA Reverse Battery Drain Current Automatic Battery Recharge Automatic Shutdown When Input Supply is Removed Automatic Trickle Charging of Low Voltage Batteries Battery Temperature Sensing and Charge Qualification Stable with Ceramic Output Capacitor 8-Lead SO and 10-Lead DFN Packages