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Description
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The MAX1830/MAX1831 constant-off-time, pulse-width-modulated (PWM) step-down DC-DC converters are
ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook computers. These devices feature internal synchronous rectification for high efficiency and reduced component count. They require no external Schottky diode. The internal 45mΩ PMOS power switch and 55mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 3A. The MAX1830 produces preset +2.5V, +1.8V, or +1.5V output voltage or an adjustable output from +1.1V to VIN. The MAX1831 produces preset +3.3V, +2.5V, and +1.5V output voltages and an adjustable output from +1.1V to VIN. They achieve efficiencies as high as 94%.
The MAX1830/MAX1831 use a unique current-mode, constant-off-time, PWM control scheme, which includes Idle Mode™ to maintain high efficiency during light-load operation. The programmable constant-off-time
architecture sets switching frequencies up to 1MHz, allowing the user to optimize performance trade-
offs between efficiency, output switching noise, component size, and cost. Both devices are designed for continuous output currents up to 3A, an internal digital soft-start to limit surge currents during startup, a 100% duty cycle mode for low-dropout operation, and a
low-power shutdown mode that disconnects the input from the output and reduces supply current below 1µA.The MAX1830/MAX1831 are available in 16-pin
QSOP packages.
For similar devices that provide continuous output
currents of 1A to 3A, refer to the MAX1644, MAX1623, and MAX1742/MAX1842/MAX1843 data sheets.
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| Ordering Information |
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Devices:
1-8
of
8
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| MAX1830 |
Free Sample |
Buy |
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Package:
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TYPE PINS FOOTPRINT
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DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free? Materials Analysis |
MAX1830EEE
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16-5*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1830EEE-T
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16-5*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1830EEE+
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+5*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX1830EEE+T
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+5*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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| MAX1831 |
Free Sample |
Buy |
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Package:
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TYPE PINS FOOTPRINT
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DRAWING CODE/VAR *
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|
Temp |
RoHS/Lead-Free? Materials Analysis |
MAX1831EEE
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16-5*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1831EEE-T
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16-5*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1831EEE+
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+5*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX1831EEE+T
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QSOP;16 pin;31 mm²
Outline Drawing: 21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+5*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis
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