Features
- ±1.8% VOUT accuracy guaranteed over line, load and TJ = -40°C to +125°C
- Very low 130mV dropout voltage at VOUT = 2.5V
- Stable with a 4.7µF output ceramic capacitor
- Very fast transient response
- Programmable output soft-start time
- Excellent PSRR over wide frequency range
- Current limit protection
- Thermal shutdown function
- Available in an 8 Ld DFN package
- Pb-free (RoHS compliant)
Description
The ISL80510 is a single output Low Dropout voltage regulator (LDO) capable of sourcing up to 1A output current. This LDO operates from input voltages of 2. 2V to 6V. The output voltage of ISL80510 can be programmed from 0. 8V to 5. 5V. A submicron BiCMOS process is utilized for this product family to deliver the best in class analog performance and overall value. This CMOS LDO consumes significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints. State-of-the-art internal compensation achieves a very fast load transient response and excellent PSRR. The ISL80510 provides an output accuracy of ±1. 8% VOUT accuracy over all load, line and temperature variation (TJ = -40°C to +125°C). An external capacitor on the soft-start pin provides an adjustable soft starting of the output voltage ramp to control the inrush current. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode.
Parameters
| Attributes | Value |
|---|---|
| Input Voltage (Min) (V) | 2.2 |
| Input Voltage (Max) (V) | 6 |
| Output Voltage (Min) (V) | 0.8 |
| Output Voltage (Max) (V) | 5.5 |
| Output Current 1 (Max) (A) | 1 |
| Drop Out Voltage (Typical) | 130 @ 1A |
| Fixed Output Voltage Option | No |
| PSRR (db) | 58 |
| Quiescent Current | 2200 µA |
| Noise (100Hz to 100kHz) (μVrms) | 75 |
| Qualification Level | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| DFN | 3.0 x 3.0 x 0.90 | 8 | 0.7 |
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Knowledge Base
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What is the purpose of adjustable soft-start feature on the ISL80505 and ISL80510?
Question: One of the features of these parts is adjustable or programmable soft-start. What is the purpose of this? Answer: An adjustable soft-start with monotonic start-up ramp provides safe start-up for sensitive loads. The soft-start circuit controls the rate at which the output voltage rises ...
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Can I leave the ENABLE pin floating on the ISL80505 or ISL80510?
Question: Can I leave the ENABLE pin floating? Answer: No, this pin must not be left floating. The ENABLE turn-on threshold is typically 800mV with 80mV of hysteresis. As a result, this pin must not be left floating, and should be tied to VIN if not used. A 1kΩ ...
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Is the ISL80510 a drop-in replacement for TPS7A8001?
Question: Can I use the ISL80510 to replace TPS7A8001 from Texas Instruments? Answer: The ISL80510 is pin-to-pin compatible with TI’s TPS7A8001 but it is not a 100% drop-in replacement - you will need to adjust either R1 or R2 (output voltage divider) to use. Our ISL80510 has ...
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