ADM7171ACPZ‑3.0‑R7 Complete Technical Datasheet Summary

1. Basic Identification

2. Core Electrical Specifications

2.1 Input/Output

• Input Voltage Range (VIN): 2.3 V to 6.5 V
• Output Voltage (VOUT): 3.0 V
• Maximum Load Current (ILOAD): 1 A
• Dropout Voltage (VDROPOUT):

2.2 Accuracy & Regulation

• Initial Accuracy (25 °C): −0.5% to +1%
• Full‑Range Accuracy (Line/Load/Temp): ±1.5%
• Line Regulation: ±0.1%/V
• Load Regulation: 0.1 to 0.4%/A

2.3 Noise & PSRR

• Output Noise (100 Hz–100 kHz): 5 μVrms
• Output Noise (10 Hz–100 kHz): 6 μVrms
• PSRR @ 100 kHz: 60 dB (VIN=4.0 V, ILOAD=1 A)

2.4 Supply Current

• Quiescent Current (IGND, No Load): 0.7 mA typical
• Quiescent Current (Full Load): 4.0 mA typical
• Shutdown Current (EN=GND, VIN=5 V): 0.25 μA typical

2.5 Transient & Timing

• Load Transient Response (1 mA → 500 mA): 1.5 μs settling
• Voltage Deviation: 35 mV
• Start‑Up Time (No SS Cap): 380 μs
• Start‑Up Time (CSS=1 nF): 1.0 ms

2.6 Protection

• Current‑Limit Threshold: 1.3–2.7 A
• Thermal Shutdown Threshold: 150 °C
• Thermal Hysteresis: 15 °C
• UVLO Threshold (Rising): 2.28 V
• UVLO Threshold (Falling): 1.94 V

3. Pin Configuration (Top View)

表格

4. Package & Thermal Data

• Package: 8‑Lead LFCSP, 3 mm × 3 mm
• Ball Pitch: 0.8 mm
• θJA (Junction‑to‑Ambient): 36.4 °C/W
• θJC (Junction‑to‑Case): 23.5 °C/W
• ΨJB (Junction‑to‑Board): 13.3 °C/W
• Soldering: JEDEC J‑STD‑020 compatible

5. Recommended External Components

• Input Capacitor (CIN): 4.7 μF ceramic, X7R/X5R
• Output Capacitor (COUT): 4.7 μF ceramic, X7R/X5R
• Minimum Capacitance: 3.3 μF over −40 °C to +125 °C
• ESR Range: 0.001–0.05 Ω
• Soft‑Start Cap (CSS): 0–10 nF (adjustable start‑up)

6. Key Features

• Ultralow noise: 5 μVrms (100 Hz–100 kHz)
• High PSRR: 60 dB @ 100 kHz
• Fast transient response: 1.5 μs
• Precision enable with hysteresis
• Adjustable soft‑start via external capacitor
• Stable with small 4.7 μF ceramic capacitors
• Thermal and current‑limit protection
• Compact 3 mm × 3 mm LFCSP package

7. Typical Applications

• Precision analog circuits: ADCs, DACs, op‑amps
• Clock/PLL/VCO power supplies
• Portable & battery‑powered systems
• Industrial instrumentation
• Medical & healthcare equipment
• Communications infrastructure

8. Ordering & Packaging

• Order Code: ADM7171ACPZ‑3.0‑R7
• Output: Fixed 3.0 V
• Package: 8‑LFCSP
• Marking: LPZ
• Tape‑and‑Reel packaging (‑R7 suffix)