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| Part Number | MAX1634CAI | MAX1634EAI | MAX1634CAI+ | MAX1631CAI | 
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | 
| Product Status | Obsolete | Obsolete | Active | Obsolete | 
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | 
| Function | Step-Down | Step-Down | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | Positive | Positive | 
| Topology | Buck | Buck | Buck | Buck | 
| Number of Outputs | 2 | 2 | 2 | 2 | 
| Output Phases | 1 | 1 | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 4.2V ~ 30V | 4.2V ~ 30V | 4.2V ~ 30V | 4.2V ~ 30V | 
| Frequency - Switching | 200kHz ~ 300kHz | 200kHz ~ 300kHz | 200kHz ~ 300kHz | 200kHz ~ 300kHz | 
| Duty Cycle (Max) | 99% | 99% | 99% | 99% | 
| Synchronous Rectifier | Yes | Yes | Yes | Yes | 
| Clock Sync | Yes | Yes | Yes | Yes | 
| Serial Interfaces | - | - | - | - | 
| Control Features | Enable, Reset, Sequencing | Enable, Reset, Sequencing | Enable, Reset, Sequencing | Enable, Reset, Sequencing | 
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP (0.209", 5.30mm Width) | 
| Supplier Device Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP |