Features and Benefits
- 750mA Load Currents (MAX738A/MAX744A)
- High-Frequency, Current-Mode PWM
- 159kHz to 212.5kHz Guaranteed Oscillator Frequency Limits (MAX744A)
- 85% to 96% Efficiencies
- 1.7mA Quiescent Current
- 6µA Shutdown Supply Current
- Single Preselected Inductor Value, No Component Design Required
- Overcurrent, Soft-Start, and Undervoltage Lockout Protection
- Cycle-by-Cycle Current Limiting
- 8-Pin DIP/SO Packages (MAX730A)
The MAX730A/MAX738A/MAX744A are 5V-output CMOS, step-down switching regulators. The MAX738A/MAX744A accept inputs from 6V to 16V and deliver 750mA. The MAX744A guarantees 500mA load capability for inputs above 6V and has tighter oscillator frequency limits for low-noise (radio) applications. The MAX730A accepts inputs between 5.2V and 11V and delivers 450mA for inputs above 6V. Typical efficiencies are 85% to 96%. Quiescent supply current is 1.7mA and only 6µA in shutdown.
Pulse-width modulation (PWM) current-mode control provides precise output regulation and excellent transient responses. Output voltage accuracy is guaranteed to be ±5% over line, load, and temperature variations. Fixed-frequency switching allows easy filtering of output ripple and noise, as well as the use of small external components. These regulators require only a single inductor value to work in most applications, so no inductor design is necessary.
The MAX730A/MAX738A/MAX744A also feature cycle-by-cycle current limiting, overcurrent limiting, undervoltage lockout, and programmable soft-start protection.
- Cell Phones
- Computer Peripherals
- Distributed Power Systems
- Personal Communicators
- Portable Instrumentation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
MAX738A Reliability Data1/12/2023
MAX738A Companion Parts
Recommended Related Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|MAX738ACPA+||Material Declaration||Reliability Data||8-PDIP-300_MIL|
|MAX738ACWE+||Material Declaration||Reliability Data||Small-Outline IC, Wide (0.3in)|
|MAX738ACWE+T||Material Declaration||Reliability Data||Small-Outline IC, Wide (0.3in)|
|MAX738AEPA+||Material Declaration||Reliability Data||8-PDIP-300_MIL|
|MAX738AEWE+||Material Declaration||Reliability Data||Small-Outline IC, Wide (0.3in)|
|MAX738AEWE+T||Material Declaration||Reliability Data||Small-Outline IC, Wide (0.3in)|
|MAX738AMJA/883B||Material Declaration||Reliability Data||Ceramic Dual-In-Line, Narrow (0.3in)|
|Wafer Fabrication Data||MAX738A Reliability Data|
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