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PDF ADM7150 Data sheet ( Hoja de datos )
| Número de pieza | ADM7150 | |
| Descripción | RF Linear Regulator | |
| Fabricantes | Analog Devices | |
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Data Sheet
800 mA Ultralow Noise,
High PSRR, RF Linear Regulator
ADM7150
FEATURES
Input voltage range: 4.5 V to 16 V
Maximum output current: 800 mA
Low noise
1.0 µV rms total integrated noise from 100 Hz to 100 kHz
1.6 µV rms total integrated noise from 10 Hz to 100 kHz
Noise spectral density: 1.7 nV√Hz typical from 10 kHz to 1 MHz
Power supply rejection ratio (PSRR) at 400 mA load
>90 dB from 1 kHz to 100 kHz, VOUT = 5 V
>60 dB at 1 MHz, VOUT = 5 V
Dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load
Initial voltage accuracy: ±1%
Voltage accuracy over line, load and temperature: ±2%
Quiescent current (IGND): 4.3 mA at no load
Low shutdown current: 0.1 µA
Stable with a 10 µF ceramic output capacitor
Fixed output voltage options: 1.8 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V,
4.8 V, and 5.0 V (16 outputs between 1.5 V and 5.0 V are
available)
Exposed pad 8-lead LFCSP and 8-lead SOIC packages
APPLICATIONS
Regulated power noise sensitive applications
RF mixers, phase-locked loops (PLLs), voltage-controlled
oscillators (VCOs), and PLLs with integrated VCOs
Communications and infrastructure
Cable digital-to-analog converter (DAC) drivers
Backhaul and microwave links
GENERAL DESCRIPTION
The ADM7150 is a low dropout (LDO) linear regulator that
operates from 4.5 V to 16 V and provides up to 800 mA of
output current. Using an advanced proprietary architecture, it
provides high power supply rejection (>90 dB from 1 kHz to 1 MHz),
ultralow output noise (<1.7 nV√Hz), and achieves excellent line and
load transient response with a 10 µF ceramic output capacitor.
The ADM7150 is available in 1.8 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V,
4.8 V, and 5.0 V fixed outputs. In addition, 16 fixed output
voltages between 1.5 V and 5.0 V are available upon request.
The ADM7150 regulator typical output noise is 1.0 µV rms
from 100 Hz to 100 kHz for fixed output voltage options, and
the noise spectral density is 1.7 nV/√Hz from 10 kHz to 1 MHz.
The ADM7150 is available in 8-lead, 3 mm × 3 mm LFCSP and
8-lead SOIC packages, making it not only a very compact solution
but also providing excellent thermal performance for applications
requiring up to 800 mA of output current in a small, low profile
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
TYPICAL APPLICATION CIRCUIT
VIN = 6.2V
ON
CIN
10µF
OFF
CBYP
1µF
ADM7150
VIN VOUT
EN
BYP
REF
REF_SENSE
VOUT = 5.0V
COUT
10µF
CREF
1µF
CREG
10µF
VREG
GND
Figure 1. 5 V Output Circuit
footprint. See the ADM7151 adjustable LDO to generate additional
output voltages.
100k
10k
CBYP = 1µF
CBYP = 10µF
CBYP = 100µF
CBYP = 1mF
1k
100
10
1
0.1 1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
Figure 2. Noise Spectral Density (NSD) vs. Frequency for Various CBYP
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADM7150
Data Sheet
Parameter
EN INPUT
EN Input Logic High
EN Input Logic Low
EN Input Logic Hysteresis
EN Input Leakage Current
Symbol
ENHIGH
ENLOW
ENHYS
IEN-LKG
Test Conditions/Comments
4.5 V ≤ VIN ≤ 16 V
VIN = 5 V
VEN = VIN or GND
Min Typ Max Unit
3.2 V
0.8 V
225 mV
0.1 1.0 µA
1 Based on an end-point calculation using 1 mA and 800 mA loads. See Figure 7, Figure 16, and Figure 22 for typical load regulation performance for loads less than 1 mA.
2 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 5.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 5.0 V, or 4.5 V.
3 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to achieve the nominal output voltage. Dropout applies only for
output voltages above 4.5 V.
4 Start-up time is defined as the time between the rising edge of VEN to VOUT, VREG, or VREF being at 90% of its nominal value.
5 The output voltage is turned off until the VREG UVLO rise threshold is crossed. The VREG output is turned off until the input voltage UVLO rise threshold is crossed.
INPUT AND OUTPUT CAPACITOR RECOMMENDED SPECIFICATIONS
Table 2.
Parameter
CAPACITANCE
Minimum Input1
Minimum Regulator1
Minimum Output1
Minimum Bypass
Minimum Reference
CAPACITOR Equivalent Series Resistance (ESR)
CREG, COUT, CIN, CREF
CBYP
Symbol
CIN
CREG
COUT
CBYP
CREF
RESR
Test Conditions/Comments
TA = −40°C to +125°C
TA = −40°C to +125°C
Min Typ Max Unit
7.0 µF
7.0 µF
7.0 µF
0.1 µF
0.7 µF
0.001
0.001
0.2 Ω
2.0 Ω
1 The minimum input, regulator, and output capacitance must be greater than 7.0 μF over the full range of operating conditions. The full range of operating conditions
in the application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are
recommended; however, Y5V and Z5U capacitors are not recommended for use with any LDO.
Rev. 0 | Page 4 of 24
5 Page 
ADM7150
1.820
1.815
1.810
1.805
LOAD = 1mA
LOAD = 10mA
LOAD = 100mA
LOAD = 200mA
LOAD = 400mA
LOAD = 800mA
1.800
1.795
1.790
1.785
1.780
4 6 8 10 12 14 16
VIN (V)
Figure 23. Output Voltage (VOUT) vs. Input Voltage (VIN), VOUT = 1.8 V
10
9
8
7
6
5
4
3 LOAD = 1mA
LOAD = 10mA
2 LOAD = 100mA
LOAD = 200mA
1 LOAD = 400mA
LOAD = 800mA
0
–40 –5 25 85 125
JUNCTION TEMPERATURE (°C)
Figure 24. Ground Current vs. Junction Temperature (TJ), VOUT =1.8 V
10
9
8
7
6
5
4
3
2
1
0
1 10 100 1000
ILOAD (mA)
Figure 25. Ground Current vs. Load Current (ILOAD), VOUT = 1.8 V
Data Sheet
10
9
8
7
6
5
4
3 LOAD = 1mA
LOAD = 10mA
2 LOAD = 100mA
LOAD = 200mA
1 LOAD = 400mA
LOAD = 800mA
0
4 6 8 10 12 14 16
VIN (V)
Figure 26. Ground Current vs. Input Voltage (VIN), VOUT = 1.8 V
0
LOAD = 800mA
LOAD = 400mA
LOAD = 200mA
–20 LOAD = 100mA
LOAD = 10mA
–40
–60
–80
–100
–120
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Figure 27. Power Supply Rejection Ratio (PSRR) vs. Frequency,
VOUT = 5 V, VIN = 6.2 V
0
400mV
1.0V
500mV
1.1V
600mV
1.2V
–20
700mV
800mV
1.3V
1.4V
900mV
1.5V
–40
–60
–80
–100
–120
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Figure 28. Power Supply Rejection Ratio (PSRR) vs. Frequency for Various
Headroom Voltage, VOUT = 5 V, 400 mA Load
Rev. 0 | Page 10 of 24
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ADM7150.PDF ] | |
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