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PDF ISL80111 Data sheet ( Hoja de datos )
| Número de pieza | ISL80111 | |
| Descripción | Low Input Voltage NMOS LDOs | |
| Fabricantes | Intersil | |
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DATASHEET
Ultra Low Dropout 1A, 2A, 3A Low Input Voltage NMOS
LDOs
ISL80111, ISL80112, ISL80113
The ISL80111, ISL80112, and ISL80113 are ultra low dropout
LDOs providing the optimum balance between performance, size
and power consumption in size constrained designs for data
communication, computing, storage and medical applications.
These LDOs are specified for 1A, 2A and 3A of output current and
are optimized for low voltage conversions. Operating with a VIN of
1V to 3.6V and with a legacy 2.9V to 5.5V on the BIAS, the VOUT is
adjustable from 0.8V to 3.3V. With a VIN PSRR greater than 40dB
at 100kHz makes these LDOs an ideal choice in noise sensitive
applications. The guaranteed ±1.6% VOUT accuracy overall
conditions lend these parts to supplying an accurate voltage to
the latest low voltage digital ICs.
An enable input allows the part to be placed into a low quiescent
current shutdown mode. A submicron CMOS process is utilized for
this product family to deliver best-in-class analog performance
and overall value for applications in need of input voltage
conversions typically below 2.5V. It also has the superior load
transient regulation unique to a NMOS power stage. These LDOs
consume significantly lower quiescent current as a function of
load compared to bipolar LDOs.
Features
• Ultra low dropout: 75mV at 3A, (typical)
• Excellent VIN PSRR: 70dB at 1kHz (typical)
• ±1.6% guaranteed VOUT accuracy for -40ºC < TJ < +125ºC
• Very fast load transient response
• Extensive protection and reporting features
• VIN range: 1V to 3.6V, VOUT range: 0.8V to 3.3V
• Small 10 Ld 3x3 DFN package
Applications
• Noise-sensitive instrumentation and medical systems
• Data acquisition and data communication systems
• Storage, telecommunications and server equipment
• Low voltage DSP, FPGA and ASIC core power supplies
• Post-regulation of switched mode power supplies
Related Literature
• UG009, “ISL8011xEVAL1Z Evaluation Board User Guide”
1.2V ±5%
VIN
CIN
10µF
ISL80111, ISL80112, ISL80113
9 VIN
10 VIN
VOUT 1
VOUT 2
3.3V ±10%
VBIAS
CBIAS
1µF
4 VBIAS
PG 6
EN
7 ENABLE
ADJ 3
GND
OPEN-DRAIN COMPATIBLE
5
COUT
10µF
1.0V
VOUT
PGOOD
R1.30kΩ
R1.40kΩ
FIGURE 1. TYPICAL APPLICATION SCHEMATIC
100
90 3A
80
70
60 2A
50
40
1A
30
20
10
0 -40
25 85
TEMPERATURE (°C)
125
FIGURE 2. DROPOUT VOLTAGE OVER-TEMP AND IOUT
100 1.015
80
60
IOUT = 2A
40
BIAS = 5V
20 VIN = 3.3V
VOUT = 2.5V
COUT = 10µF
0100
1k
IOUT = 1A
IOUT = 3A
IOUT = 0A
10k 100k
FREQUENCY (Hz)
1M
FIGURE 3. VIN PSRR vs LOAD CURRENT (ISL80113)
1.010
1.005
1.000
0.995
0.990
0.985
-40 0 25 85
TEMPERATURE (°C)
FIGURE 4. VADJ vs TEMPERATURE
125
September 30, 2016
FN7841.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2012, 2013, 2016. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL80111, ISL80112, ISL80113
Electrical Specifications Unless otherwise specified, VIN = 3V, VBIAS = 5.5V, VOUT = 0.5V, TJ = +25°C, IL = 0mA. Applications must follow
thermal guidelines of the package to determine worst-case junction temperature. Please refer to “Power Dissipation” on page 13 and Tech Brief TB379.
Boldface limits apply across junction temperature (TJ) range, -40°C to +125°C. Pulse load techniques used by ATE to ensure TJ = TA where datasheet
limits are defined. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 9) TYP (Note 9) UNIT
VIN Quiescent Current
VBIAS Quiescent Current
Ground Pin Current in
Shutdown
IQ (VIN)
IQ (VBIAS)
ISHDN
VOUT = 1.0V, VIN = 1.4V, VBIAS = 3.3V
0 IL 3A, 4.5V VBIAS 5.5V (ISL80113)
ENABLE Pin = 0.2V, TJ = +125°C
3.5 mA
2.9 4.6 mA
3 20 µA
VIN Dropout Voltage
(Note 10)
VDO(VIN)
VBIAS Dropout Voltage
(Note 10)
VDO(BIAS)
OVERCURRENT PROTECTION
ILOAD = 1A, VOUT = 2.5V, VBIAS = 4.5V (ISL80111)
ILOAD = 2A, VOUT = 2.5V, VBIAS = 4.5V (ISL80112)
ILOAD = 3A, VOUT = 2.5V, VBIAS = 4.5V (ISL80113)
ILOAD = 1A, VOUT = 2.5V (ISL80111)
ILOAD = 2A, VOUT = 2.5V (ISL80112)
ILOAD = 3A, VOUT = 2.5V (ISL80113)
27 90
53 115
75 140
1.1 1.3
1.2 1.4
1.3 1.5
mV
mV
mV
V
V
V
Output Short Circuit Current ISC VOUT = 0.2V (ISL80113)
(3A Version)
5.2 A
Output Short Circuit Current
(2A Version)
VOUT = 0.2V (ISL80112)
3.2 A
Output Short Circuit Current
(1A Version)
VOUT = 0.2V (ISL80111)
2.2 A
OVER-TEMPERATURE PROTECTION
Thermal Shutdown
Temperature
TSD
160 °C
Thermal Shutdown
Hysteresis
TSDn
20 °C
AC CHARACTERISTICS
Input Supply Ripple
Rejection
Output Noise Voltage
Spectral Noise Density
PSRR(VIN)
PSRR(VBIAS)
eN(RMS)
eN
DEVICE START-UP CHARACTERISTICS
f = 120Hz, ILOAD = 1A
f = 120Hz, ILOAD = 1A
BW = 100Hz f 100kHz, VBIAS = 2.9V, VIN = 1.6V,
VOUT = 1.2V, ILOAD = 3A
ILOAD = 3A, f = 10Hz, VBIAS = 2.9V, VIN = 1.6V,
VOUT = 1.2V
ILOAD = 3A, f = 100Hz, VBIAS = 2.9V, VIN = 1.6V,
VOUT = 1.2V
80 dB
60 dB
38 µVRMS
3 µV/Hz
1 µV/Hz
EN Start-up Time
BIAS Start-up Time
ENABLE PIN CHARACTERISTICS
tEN
tBIAS
COUT = 10µF, ILOAD = 1A
COUT = 10µF, EN = BIAS
50 µs
100 µs
Turn-on Threshold (Rising)
Hysteresis
PG PIN CHARACTERISTICS
VIN = 3.6V, VBIAS = 5.5V
VIN = 3.6V, VBIAS = 5.5V
400 680 850
60 260 330
mV
mV
PG Flag Falling Threshold
PG Flag Hysteresis
PG Flag Low Voltage
PGTH
PGHYS
VBIAS = 5.5V
VBIAS = 5.5V
ISINK = 500µA
71 82 93 %VOUT
9.3 %VOUT
90 130 mV
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5
FN7841.3
September 30, 2016
5 Page 
ISL80111, ISL80112, ISL80113
Typical Operating Performance Unless otherwise noted, VIN = 1.8V, VBIAS = 3.3V, VOUT = 1.2V, CIN = COUT = 10µF,
TJ = +25°C, ILOAD = 0A. (Continued)
100
BIAS = 5V
IOUT = 1A
VIN = 3.3V
80 VOUT = 2.5V
COUT = 5x2.2µF
100
80
IOUT = 1A
BIAS = 5V
VIN = 3.3V
VOUT = 2.5V
COUT = 5x2.2µF
60
IOUT = 2A
40
IOUT = 3A
IOUT = 0A
60
40
IOUT = 2A
IOUT = 0A
20 20 IOUT = 3A
0
100 1k 10k 100k 1M
FREQUENCY (Hz)
FIGURE 34. VIN PSRR vs FREQUENCY FOR VARIOUS LOAD CURRENTS
0
100 1k 10k 100k 1M
FREQUENCY (Hz)
FIGURE 35. VBIAS PSRR vs FREQUENCY FOR VARIOUS LOAD
CURRENTS
3.0
2.5
300 lfm
2.0
1.5
1.0
0 lfm
0.5
0.0
25 30 35 40 45 50 55 60 65 70 75 80 85 105 125
TEMPERATURE (°C)
FIGURE 36. CONTINUOUS POWER LIMIT vs AIR TEMP AND FLOW
10
VBIAS = 5V
VIN = 3.8V
VOUT = 3.3V
IOUT = 3A
1
0.10
VBIAS = 3.8V
VIN = 1.28V
VOUT = 1V
IOUT = 3A
0.01
10 100 1k 10k
FREQUENCY (Hz)
FIGURE 37. OUTPUT NOISE SPECTRAL DENSITY
100k
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FN7841.3
September 30, 2016
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ISL80111.PDF ] | |
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