MAX1725：12V, Ultra-Low-IQ, Low-Dropout Linear Regulators
The MAX1725/MAX1726 are ultra-low supply current, low-dropout linear regulators intended for low-power applications that demand the longest possible battery life. Unlike inferior PNP-based designs, the MAX1725/MAX1726s' PMOS pass elements maintain an ultra-low 2µA supply current throughout their entire operating range and in dropout. Despite their ultra-low power consumption, the MAX1725/MAX1726 have tight output accuracy (1.5%) and require just 1µF output capacitance to achieve good load-transient response. These regulators have a wide input voltage range (+2.5V to +12V), making them excellent choices for systems powered from two lithium-ion (Li+) cells and 9V batteries. Other features include reverse-battery protection, short-circuit protection, and thermal protection. The MAX1725 provides an adjustable 1.5V to 5V output using an external resistor-divider. The MAX1726 provides factory preset 1.8V, 2.5V, 3.3V, or 5V output voltages (see the Ordering Information in the full data sheet). Both devices are available in a tiny 5-pin SOT23 package.
Key Features
| MAX1725, MAX1726: Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX1725-MAX1726 Data Sheet | MAX1725-MAX1726.pdf |
Parametrics
| Part Number | Regulators | VIN (V) | VIN (V) | Preset VOUT (V) | Adj. VOUT (V) | Adj. VOUT (V) | VDROPOUT @Rated ILOAD (V) | Rated ILOAD (mA) | Rated ILOAD (mA) | ICC (µA) | Output Voltage Noise (µV RMS) | Ref. Bypass | Low Batt./ Pwr. Fail Out | Watchdog | Reverse Batt. Protect. | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | typ | max | typ | See Notes | |||||||||||
| MAX1725 | 1 | 2.5 | 12 | - | 1.5 | 5 | 0.3 | 20 | 20 | 4.5 | 350 | No | No | No | Yes | -40 to +85 | SOT/5 | $0.82 @1k |
| MAX1726 | 1.8 2.5 3.3 5 | - | - | SOT/5 | ||||||||||||||
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Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1725EUK+T | Active | SOT,;5 pin;9 mm² | -40°C to +85°C | Lead Free | |
| MAX1725EUK-T | No Longer Available | MAX1725EUK+T | SOT,;5 pin;9 mm² | -40°C to +85°C | No |
- MAX1725-MAX1726.pdf MAX1726
