Monolithic 1A Step-Down Regulator with Low Quiescent Current
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Overview
Description
The EL7531 is a synchronous, integrated FET 1A step-down regulator with internal compensation. It operates with an input voltage range from 2. 5V to 5. 5V, which accommodates supplies of 3. 3V, 5V, or a Li-Ion battery source. The output can be externally set from 0. 8V to VIN with a resistive divider. The EL7531 features automatic PFM/PWM mode control, or PWM mode only. The PWM frequency is typically 1. 4MHz and can be synchronized up to 12MHz. The typical no load quiescent current is only 120µA. Additional features include a Power-Good output, 2 of PCB area with components on one side only. The 10-pin MSOP package is specified for operation over the full -40°C to +85°C temperature range.
Features
- Less than 0.15 in2 (0.97 cm2) footprint for the complete 1A converter
- Components on one side of PCB
- Max height 1.1mm MSOP10
- Power-Good (PG) output
- Internally-compensated voltage mode controller
- Up to 94% efficiency
- <1µA shut-down current
- 120µA quiescent current
- Overcurrent and over-temperature protection
- External synchronizable up to 12MHz
- Pb-Free plus anneal available (RoHS compliant)
Applications
Applications
- PDA and pocket PC computers Bar code readers Cellular phones Portable test equipment Li-Ion battery powered devices Small form factor (SFP) modules
Documentation
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PDF739 KB
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Datasheet
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PDF592 KB
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Application Note
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PDF509 KB
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Application Note
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PDF397 KB
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Application Note
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PDF650 KB
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Application Note
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PDF387 KB
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Application Note
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PDF349 KB
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Application Note
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PDF203 KB
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End Of Life Notice
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PDF200 KB
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End Of Life Notice
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PDF195 KB
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Other
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PDF363 KB
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Product Advisory
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PDF117 KB
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Product Change Notice
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| MSOP | Tube | 800 | Get Samples, | |
EL7531IYZ-T13 Active Samples Available |
MSOP | Reel | 2500 | Get Samples, |
EL7531IYZ-T7 Active Samples Available |
MSOP | Reel | 1500 | Get Samples, |
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