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The ADM7171 is a CMOS, low dropout linear regulator (LDO) that operates from 2.3 V to 6.5 V and provides up to 1 A of output current. This high output current LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 6 V down to 1.2 V rails. Using an advanced proprietary architecture, the device provides high power supply rejection and low noise, and achieves excellent line and load transient response with just a small 4.7 μF ceramic output capacitor. Load transient response is typically 1.5 μs for a 1 mA to 500 mA load step. The ADM7171 is available in 17 fixed output voltage options. The following voltages are available from stock: 1.3 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 4.2 V, and 5.0 V. Additional voltages that are available by special order are: 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.7 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, and 4.6 V. An adjustable version is also available that allows output voltages that range from 1.2 V to VIN − VDO with an external feedback divider. Inrush current can be controlled by adjusting the start-up time via the soft start pin. The typical start-up time with a 1 nF soft start capacitor is 1.0 ms. The ADM7171 regulator output noise is 5 μV rms independent of the output voltage. The ADM7171 is available in an 8-lead, 3 mm × 3 mm LFCSP, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 1 A of output current in a small, low profile footprint. Applications Regulation to noise sensitive applications: ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs Communications and infrastructure Medical and healthcare Industrial and instrumentation
Output Type | Fixed |
Input Voltage Min | 2.3V |
Input Voltage Max | 6.5V |
Fixed Output Voltage Nom. | 3.3V |
Adjustable Output Voltage Min | - |
Adjustable Output Voltage Max | - |
Output Current | 1A |
Dropout Voltage Vdo | 42mV |
LDO Regulator Case Style | LFCSP |
No. of Pins | 8Pins |
Operating Temperature Min | -40°C |
Operating Temperature Max | 125°C |
Packaging | Cut Tape |
Product Range | 3.3V 1A LDO Voltage Regulators |
Automotive Qualification Standard | - |
RoHS Phthalates Compliant | Yes |
MSL | - |
SVHC | No SVHC (07-Jul-2017) |
rohs_status | Compliant |
lead_free_status | Contains Lead |
mounting_style | Surface Mount |
packaging | Cut Tape (CT) |
lifecycle_status | Active |
output_current | 1.00 A |
pin_count | 8 |
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