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PDF ISL21032 Data sheet ( Hoja de datos )
| Número de pieza | ISL21032 | |
| Descripción | Low Voltage References | |
| Fabricantes | Intersil Corporation | |
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®
Data Sheet
June 21, 2006
ISL21032
FN6239.1
Precision 0.600V Low Voltage FGA™
References
The ISL21032 FGA™ voltage references are very high
precision analog voltage references specifically designed to
meet the rigorous performance requirements of high current,
low voltage VRM and POL modules.
Fabricated in Intersil's proprietary Floating Gate Analog
technology, these references feature guaranteed
performance over the -40°C to +130°C operating
temperature range.
Additional features include guaranteed absolute accuracy as
low as ±0.5% over the operating temperature range of -40°C
to +130°C. Long-term stability is 10ppm/√1,000Hrs.
The absolute accuracy and thermal performance of the
ISL21032 family are ideal fit for the next generation of high
current, low voltage VRM and POL modules.
Pinout
www.DataSheet4U.com
ISL21032
(3 LD SOT-23
TOP VIEW)
VIN 1
VOUT 2
3 GND
Features
• Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6V
• Initial Accuracy Options @ +25°C ±1.0mV, ±2.5mV, and
±5.0mV
• Absolute Accuracy Options Over Operating Temp Range
±0.5% (±3.0mV), ±0.75% (±4.5mV), and ±1.0% (±6.0mV)
• Supply Voltage Range . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
• Low Quiescent Current . . . . . . . . . . . . . . . . . . . 12µA typ.
• Long Term Stability. . . . . . . . . . . . . . . . 10ppm/√1,000Hrs.
• Thermal Hysteresis . . . . . . . . . 100ppm @ ∆TA = +170°C
• Source & Sink Current . . . . . . . . . . . . . . . . . . . . . . . . 7mA
• ESD Protection. . . . . . . . . . . . . 5kV (Human Body Model)
• Standard 3 Ld SOT-23 Packaging
• Extended Temperature Range . . . . . . . . . -40°C to +130°C
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Low Voltage, High Current VRM & POL Modules
• Accurate Reference for Low Voltage DC/DC Converters
Ordering Information
PART NUMBER
(Note)
PART
VOUT OPTION
MARKING
(V)
GRADE
TEMP. RANGE
(°C)
PACKAGE (Pb-free)
ISL21032BPH306Z
DEU
0.6
±0.5%@ DTA = 170°C
-40 to 130
3 Ld SOT-23
ISL21032BPH306Z-TK
DEU
0.6
±0.5%@ DTA = 170°C
-40 to 130
3 Ld SOT-23 T&R
ISL21032CPH306Z
DEV
0.6
±0.75%@ DTA = 170°C
-40 to 130
3 Ld SOT-23
ISL21032CPH306Z-TK
DEV
0.6
±0.75%@ DTA = 170°C
-40 to 130
3 Ld SOT-23 T&R
ISL21032DPH306Z
APE
0.6
±1.0%@ DTA = 170°C
-40 to 130
3 Ld SOT-23
ISL21032DPH306Z-TK
APE
0.6
±1.0%@ DTA = 170°C
-40 to 130
3 Ld SOT-23 T&R
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
FGA is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL21032
Typical Performance Curves, ISL21032 Low Voltage Output Reference
VIN = 3.0V, IOUT = 0mA, TA = 25°C Unless Otherwise Specified (Continued)
120 NO LOAD
100 1nF LOAD
10nF LOAD
80
100nF LOAD
60
40
20
0
1 10 100 1K 10K 100K 1M
FREQUENCY (Hz)
FIGURE 13. ZOUT vs f vs CL
FGA Technology
The ISL21032 series of voltage references use the floating
gate technology to create references with very low drift and
supply current. Essentially the charge stored on a floating
gate cell is set precisely in manufacturing. The reference
voltage output itself is a buffered version of the floating gate
voltage. The resulting reference device has excellent
characteristics which are unique in the industry: very low
temperature drift, high initial accuracy, and almost zero
supply current. Also, the reference voltage itself is not limited
by voltage bandgaps or zener settings, so a wide range of
reference voltages can be programmed (standard voltage
settings are provided, but customer-specific voltages are
available).
The process used for these reference devices is a floating
gate CMOS process, and the amplifier circuitry uses CMOS
transistors for amplifier and output transistor circuitry. While
providing excellent accuracy, there are limitations in output
noise level and load regulation due to the MOS device
characteristics. These limitations are addressed with circuit
techniques discussed in other sections.
Board Mounting Considerations
For applications requiring the highest accuracy, board
mounting location should be reviewed. Placing the device in
areas subject to slight twisting can cause degradation of the
accuracy of the reference voltage due to die stresses. It is
normally best to place the device near the edge of a board,
or the shortest side, as the axis of bending is most limited at
that location. Obviously mounting the device on flexprint or
extremely thin PC material will likewise cause loss of
reference accuracy.
10s/DIV
FIGURE 14. VOUT NOISE
Noise Performance and Reduction
The output noise voltage in a 0.1Hz to 10Hz bandwidth is
typically 30µVP-P. The noise measurement is made with a
bandpass filter made of a 1 pole high-pass filter with a corner
frequency at 0.1Hz and a 2-pole low-pass filter with a corner
frequency at 12.6Hz to create a filter with a 9.9Hz
bandwidth. Wideband noise is reduced by adding capacitor
to the output, but the value should be limited to 1nF or less
to insure stability.
Temperature Drift
The limits stated for output accuracy over temperature are
governed by the method of measurement. For the -40°C to
130°C temperature range, measurements are made at 25°C
and the two extremes. This measurement method combined
with the fact that FGA references have a fairly linear
temperature drift characteristic insures that the limits stated
will not be exceeded over the temperature range.
VIN = 5V
R = 200Ω
VIN
ISL21032
VOUT
GND
2N2905
0.6V/50mA
0.001µF
FIGURE 15. PRECISION LOW NOISE, LOW DRIFT, 0.6V, 50mA
REFERENCE
5
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| PDF Descargar | [ Datasheet ISL21032.PDF ] | |
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