Datasheet ADM7154 (Analog Devices)

600 mA, Ultralow Noise, High PSRR, RF Linear Regulator Data Sheet ADM7154 FEATURES TYPICAL APPLICATION CIRCUIT Input voltage range: 2.3 V to 5.5 V ADM7154 Maximum load current: 600 mA VIN = 3.8V VOUT = 3.3V VIN VOUT Low noise CIN COUT 10µF 10µF 0.9 µV rms total integrated noise from 100 Hz to 100 kHz ON 1.6 µV rms total integrated noise from 10 Hz to 100 kHz EN REF CREF OFF 1µF Noise spectral density: 1.5 nV/√Hz from 10 kHz to 1 MHz BYP REF_SENSE CBYP 1µF PSRR of 90 dB from 200 Hz to 200 kHz; 58 dB at 1 MHz, V VREG OUT = 3.3 V, VIN = 3.8 V CREG 10µF GND Dropout voltage: 120 mV typical at V
001
OUT = 3.3 V, IOUT = 600 mA Initial accuracy: ±0.5%
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Accuracy over line, load, and temperature: −2.0% (minimum),
Figure 1. Regulated 3.3 V Output from 3.8 V Input
+1.5% (maximum), from −40°C to +85°C 10k NOISE FLOOR Quiescent current, IGND = 4 mA at no load 1.0µF z) 3.3µF Low shutdown current: 0.2 μA √H 1k 10µF Stable with a 10 µF ceramic output capacitor V/ 33µF (n 100µF Adjustable and fixed output voltage options: 1.2 V, 1.8 V, 2.5 V, TY 330µF SI 100 2.8 V, 3.0 V, 3.3 V (16 standard voltages between 1.2 V and 1000µF EN 3.3 V available) L D A 8-lead LFCSP and 8-lead SOIC packages TR 10 Precision enable SPEC Supported by ADIsimPower t ool ISE O 1 APPLICATIONS N Regulation to noise sensitive applications: PLLs, VCOs, and 0.1 0.1 1 10 100 1k 10k 100k 1M
046
PLLs with integrated VCOs FREQUENCY (Hz)
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Communications and infrastructure
Figure 2. Noise Spectral Density for Different Values of CBYP
Backhaul and microwave links GENERAL DESCRIPTION
The ADM7154 is a linear regulator that operates from 2.3 V to The ADM7154 is available in 8-lead, 3 mm × 3 mm LFCSP and 5.5 V and provides up to 600 mA of load current. Using an 8-lead SOIC packages, making it not only a very compact advanced proprietary architecture, it provides high power solution, but also providing excel ent thermal performance for supply rejection and ultralow noise, achieving excel ent line and applications requiring up to 600 mA of load current in a small, load transient response with only a 10 µF ceramic output capacitor. low profile footprint. There are 16 standard output voltages for the ADM7154. The
Table 1. Related Devices
following voltages are available in stock: 1.2 V, 1.8 V, 2.5 V, 2.8 V,
Input Output Fixed/
3.0 V, and 3.3 V. Additional voltages are available by special
Model Voltage Current Adj1 Package
order: 1.3 V, 1.5 V, 1.6 V, 2.0 V, 2.2 V, 2.6 V, 2.7 V, 2.9 V, 3.1 V, ADM7150ACP 4.5 V to 16 V 800 mA Fixed 8-Lead LFCSP and 3.2 V. ADM7150ARD 4.5 V to 16 V 800 mA Fixed 8-Lead SOIC The ADM7154 regulator typical output noise is 0.9 μV rms from ADM7151ACP 4.5 V to 16 V 800 mA Adj 8-Lead LFCSP 100 Hz to 100 kHz for fixed output voltage options and ADM7151ARD 4.5 V to 16 V 800 mA Adj 8-Lead SOIC 1.5 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. ADM7155ACP 2.3 V to 5.5 V 600 mA Adj 8-Lead LFCSP ADM7155ARD 2.3 V to 5.5 V 600 mA Adj 8-Lead SOIC 1 Adj means adjustable.
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Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION ADIsimPOWER DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties UNDERVOLTAGE LOCKOUT (UVLO) PROGRAMMABLE PRECISION ENABLE START-UP TIME REF, BYP, AND VREG PINS CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS Thermal Characterization Parameter (ΨJB) PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE