ADP7185ACPZN2.5-R7

The ADP7185 is a complementary metal oxide semiconductor (CMOS), low dropout (LDO) linear regulator that operates from -2.0 V to -5.5 V and provides up to -500 mA of output current. This high output current LDO is ideal for regulation of high performance analog and mixed signal circuits operating from -0.5 V down to -4.5 V. Using an advanced proprietary architecture, the ADP7185 provides high power supple rejection ratio (PSRR) and low noise, and it achieves excellent line and load transient response with a small 4.7 μF ceramic output capacitor. The ADP7185 is available in 15 fixed output voltage options. The following voltages are available from stock: -0.5 V, -1.0 V, -1.2 V, -1.5 V, -1.8 V, -2.0 V, -2.5 V, -3.0 V, and -3.3 V. Additional voltages available by special order are -0.8 V, -0.9 V, -1.3 V, -2.8 V, -4.2 V, and -4.5 V. An adjustable version is also available which allows output voltages that range from -0.5 V to -VIN + 0.5 V with an external feedback divider. The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility. The ADP7185 regulator output noise is 4 μV rms independent of the output voltage. The ADP7185 is available in an 8 - lead, 2 mm×2 mm LFCSP, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to -500 mA of output current in a small, low profile footprint.

Applications

• Regulation to noise sensitive applications: analog - to - digital converters (ADCs), digital - to - analog converters (DACs), precision amplifiers
• Communications and infrastructure
• Medical and healthcare
• Industrial and instrumentation

Key features

• Input voltage range: -2.0 V to -5.5 V
• Maximum output current: -500 mA
• Fixed output voltage options: -0.5 V to -4.5 V
• Adjustable output from -0.5 V to -VIN + 0.5 V
• Low output noise: 4 μV rms from 100 Hz to 100 kHz
• Noise spectral density: 20 nV/√Hz, 10 kHz to 1 MHz
• Low dropout voltage: -190 mV typical at -500 mA load
• Initial output voltage (VOUT) accuracy: ±0.5%
• Operating supply current (GND): -0.6 mA typical at no load
• Low shutdown current: -2 μA typical at VIN = -5.5 V
• Stable with small 4.7 μF ceramic input and output capacitor
• Positive or negative enable logic
• Current - limit and thermal overload protection
• 8 - lead, 2 mm×2 mm LFCSP package
• Supported by ADIsimPOWER voltage regulator design tool