| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
2,000 pcs
|
2000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Clock Sync | |
| Control Features | |
| Duty Cycle (Max) | |
| Efficiency | |
| Frequency | |
| Function | |
| Industrial Grade | |
| Input Voltage | |
| Mounting Type | |
| Number of Outputs | |
| Operating Temperature | |
| Operating Voltage | |
| Output Configuration | |
| Output Phases | |
| Output Power | |
| Output Type | |
| Output Voltage | |
| Quiescent Current | |
| SVHC Present | |
| Supplier Device Package | |
| Supplier Package | |
| Synchronous Rectifier | |
| Topology | |
| Voltage |
The MAX1649CPA is a BiCMOS, step-down DC-DC switching controller designed for high efficiency over a wide load range. It utilizes a unique current-limited pulse-frequency-modulated (PFM) control scheme, providing benefits of PWM converters with significantly lower supply current.
Key electrical specifications include an input voltage range of 3V to 16V, a maximum duty cycle of 96.5%, and a switching frequency up to 300kHz. The device offers high efficiency, exceeding 90% for loads between 10mA and 1.5A, and a low dropout voltage of less than 0.3V at 500mA. The output voltage can be preset to 5V (MAX1649) or 3.3V (MAX1651), or adjusted from 1.5V to the input voltage using external resistors.
This controller is suitable for battery-powered applications and PDAs, offering high-efficiency step-down regulation. It drives external P-channel MOSFETs for loads greater than 12.5W. The MAX1649CPA is supplied in an 8-PDIP package and is designed for through-hole mounting.
Features include a maximum quiescent supply current of 100µA and a shutdown supply current of 5µA. The operating temperature range is 0°C to 70°C (TA).
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is 3V to 16V.
It supports fixed 5V (MAX1649), fixed 3.3V (MAX1651), or an adjustable output from 1.5V up to the input voltage.
The switching frequency is up to 300kHz.
The operating temperature range is 0°C to 70°C.
It is available in an 8-DIP (0.300", 7.62mm) through-hole package, also known as 8-PDIP.
Efficiency is greater than 90% for loads from 10mA to 1.5A.
No, it does not include a synchronous rectifier.