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Linear Regulators (LDOs) 
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MAX1793
Low-Dropout, Low-IQ, 1A Linear Regulator
1A LDO Has Only 210mV Dropout Voltage, Fits in 1.7W Package, Which Is 30% Smaller Than SOT23
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Key Features
Applications/Uses
Parametric specs for Linear Regulators
| VIN (V) (min) | 2.5 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 1.25 |
| Adj. VOUT (V) (max) | 5 |
| Rated ILOAD (mA) | 1000 |
| Preset VOUT (V) | 2.5 3.3 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.21 |
| ICC (µA) (max) | 200 |
| Output Voltage Noise (µV RMS) (typ) | 115 |
| Ref. Bypass | No |
| Low Batt./ Pwr. Fail Out | No |
| POK/Reset Thresh. (V) (nom) | Vout-6% |
| Watchdog | No |
| Reverse Batt. Protect. | No |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 1.58 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Low-Dropout, Low-IQ, 1A Linear Regulator | Feb 09, 2012 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Linear Regulators
| VIN (V) (min) | 2.5 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 1.25 |
| Adj. VOUT (V) (max) | 5 |
| Rated ILOAD (mA) | 1000 |
| Preset VOUT (V) | 2.5 3.3 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.21 |
| ICC (µA) (max) | 200 |
| Output Voltage Noise (µV RMS) (typ) | 115 |
| Ref. Bypass | No |
| Low Batt./ Pwr. Fail Out | No |
| POK/Reset Thresh. (V) (nom) | Vout-6% |
| Watchdog | No |
| Reverse Batt. Protect. | No |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 1.58 |
Key Features
- Guaranteed 1A Output Current
- Low 210mV Dropout at 1A
- Up to ±1% Output Voltage Accuracy
- Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V or 5.0V
- Adjustable from 1.25V to 5.0V
- Reset Output (4ms Delay)
- Low 125µA Ground Current
- 0.1µA Shutdown
- Low 115µVRMS Output Noise
- Thermal-Overload Protection
- Output Current Limit
- Tiny TSSOP Power Package (1.5W) 30% Smaller than SOT223 (only 1.1mm high)
Applications/Uses
- Docking Stations
- Notebook Computers
- PDAs
- USB Hubs
- Wireless Base Stations
Description
The MAX1793 low-dropout linear regulator (LDO) operates from +2.5V to +5.5V and delivers a guaranteed 1A load current with a low 210mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see the Ordering Information in the full data sheet) or can be adjusted from 1.25V to 5.0V with an external resistor-divider.
An internal pMOS pass transistor allows a low 125µA supply current, making the MAX1793 ideal for battery-operated portable equipment. Other features include a built-in reset output, low-power shutdown, and short-circuit and thermal-overload protection. The MAX1793 is available in a 1.5W, 16-pin power TSSOP package, which is 30% smaller than a SOT223 package and only 1.1mm high.
An internal pMOS pass transistor allows a low 125µA supply current, making the MAX1793 ideal for battery-operated portable equipment. Other features include a built-in reset output, low-power shutdown, and short-circuit and thermal-overload protection. The MAX1793 is available in a 1.5W, 16-pin power TSSOP package, which is 30% smaller than a SOT223 package and only 1.1mm high.
Technical Docs
| Data Sheet | Low-Dropout, Low-IQ, 1A Linear Regulator | Feb 09, 2012 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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