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| (R) ISL21032 Data Sheet June 21, 2006 FN6239.1 Precision 0.600V Low Voltage FGATM References The ISL21032 FGATM 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 -40C to +130C operating temperature range. Additional features include guaranteed absolute accuracy as low as 0.5% over the operating temperature range of -40C to +130C. 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. Features * Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6V * Initial Accuracy Options @ +25C 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 . . . . . . . . . . . . . . . . . . . 12A typ. * Long Term Stability. . . . . . . . . . . . . . . . 10ppm/1,000Hrs. * Thermal Hysteresis . . . . . . . . . 100ppm @ TA = +170C * Source & Sink Current . . . . . . . . . . . . . . . . . . . . . . . . 7mA * ESD Protection. . . . . . . . . . . . . 5kV (Human Body Model) * Standard 3 Ld SOT-23 Packaging * Extended Temperature Range . . . . . . . . . -40C to +130C * Pb-Free Plus Anneal Available (RoHS Compliant) Pinout ISL21032 (3 LD SOT-23 TOP VIEW) VIN 1 3 VOUT 2 GND Applications * Low Voltage, High Current VRM & POL Modules * Accurate Reference for Low Voltage DC/DC Converters Ordering Information PART NUMBER (Note) ISL21032BPH306Z ISL21032BPH306Z-TK ISL21032CPH306Z ISL21032CPH306Z-TK ISL21032DPH306Z ISL21032DPH306Z-TK PART MARKING DEU DEU DEV DEV APE APE VOUT OPTION (V) 0.6 0.6 0.6 0.6 0.6 0.6 GRADE 0.5%@ DTA = 170C 0.5%@ DTA = 170C 0.75%@ DTA = 170C 0.75%@ DTA = 170C 1.0%@ DTA = 170C 1.0%@ DTA = 170C TEMP. RANGE (C) -40 to 130 -40 to 130 -40 to 130 -40 to 130 -40 to 130 -40 to 130 PACKAGE (Pb-free) 3 Ld SOT-23 3 Ld SOT-23 T&R 3 Ld SOT-23 3 Ld SOT-23 T&R 3 Ld SOT-23 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. ISL21032 Absolute Maximum Ratings Storage Temperature Range . . . . . . . . . . . . . . . . . -65C to + 150C Max Voltage VIN to Gnd. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V Max Voltage VOUT to Gnd*: ISL21032, VOUT = 0.6V. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +1.6V Voltage on "DNC" Pins. . . No Connections Permitted to These Pins. Thermal Information Thermal Resistance JA (C/W) 3 Ld SOT-23 Package . . . . . . . . . . . . . . . . . . . . . . . 400 Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C Lead Temperature, Soldering* . . . . . . . . . . . . . . . . . . . . . . . . +225C *Note: Maximum Duration = 10s ESD Ratings MIL-STD 883, Method 3015. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5kV ESD Rating (Machine Model) . . . . . . . . . . . . . . . . . . . . . . . . . .500V CAUTION: Absolute Maximum Ratings are limits which may result in impaired reliability and/or permanent damage to the device. These are stress ratings provided for information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification are not implied. For guaranteed specifications and test conditions, see Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Electrical Specifications (VOUT = 0.600V) SYMBOL VOUT VOA PARAMETER Output Voltage VOUT Accuracy @ TA = 25C Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001F, TA = -40 to +130C, unless otherwise specified. CONDITIONS MIN TYP 0.600 ISL21032B06 ISL21032C06 ISL21032D06 -1.0 -2.5 -5.0 -3.0 -4.5 -6.0 2.7 12 +2.7V VIN +5.5V Sourcing: 0mA ISOURCE 7mA Sinking: -7mA ISINK 0mA 50 20 20 10 100 50 30 80 +1.0 +2.5 +5.0 +3.0 +4.5 +6.0 5.5 25 200 70 70 MAX UNITS V mV mV mV mV mV mV V A V/V V/mA V/mA VOA VOUT Accuracy Over Op Temp Range (-40 < TA < 130C) ISL21032B06 ISL21032C06 ISL21032D06 VIN IIN VOUT/VIN VOUT/IOUT Input Voltage Range Supply Current Line Regulation Load Regulation VOUT/t VOUT/TA ISC VN NOTES: Long Term Stability (Note 3) Thermal Hysteresis (Note 1) Short Circuit Current (Note 2) Output Voltage Noise TA = 25C TA = 170C TA = 25C, VOUT tied to Gnd 0.1Hz f 10Hz 1kHrs ppm mA Vp-p ppm/ 1. Thermal Hysteresis is the change in VOUT measured @ TA = 25C after temperature cycling over a specified range, TA. VOUT is read initially at TA = 25C for the device under test. The device is temperature cycled and a second VOUT measurement is taken at 25C. The difference between the initial VOUT reading and the second VOUT reading is then expressed in ppm. For TA = 170C, the device under is cycled from +25C to +130C to -40C to +25C. 2. Guaranteed by device characterization and/or correlation to other device tests. 3. FGATM voltage reference long term drift is a logarithmic characteristic. Changes that occur after the first few hundred hours of operation are significantly smaller with time, asymptotically approaching zero beyond 2000 hours. Because of this decreasing characteristic, long-term drift is specified in ppm/1kHr. 2 ISL21032 Typical Performance Curves, ISL21032 Low Voltage Output Reference VIN = 3.0V, IOUT = 0mA, TA = 25C Unless Otherwise Specified 20 18 16 14 IIN (A) 12 10 8 6 4 2 2.5 3.0 3.5 4.0 VIN (V) 4.5 5.0 5.5 UNIT 3 IIN (A) 14 13 12 11 UNIT 2 10 9 UNIT 1 8 7 6 2.5 3.0 3.5 4.0 VIN (V) 4.5 5.0 5.5 -40C +85C +25C FIGURE 1. IIN vs VIN (3 REPRESENTATIVE UNITS) FIGURE 2. IIN vs VIN - 3 TEMPS 0.6010 (NORMAILIZED TO 0.6V AT VIN = 3V) 0.60008 0.60006 0.60004 UNIT 3 0.60002 0.60000 0.59998 0.59996 0.59994 0.59992 2.5 3 3.5 4 VIN (V) 4.5 5 5.5 UNIT 2 UNIT 1 0.6005 VOUT (V) UNIT 2 0.5995 UNIT 3 0.5990 UNIT 1 0.5985 -40 -15 10 35 60 85 110 135 TEMPERATURE (C) FIGURE 3. VOUT vs TEMP VOUT (V) 0.6000 FIGURE 4. LINE REGULATION VO (V) (NORMALIZED TO VIN = 3.0V) 125 100 75 25 0 -25 -50 -75 -100 -125 2.5 3 3.5 4 VIN 4.5 5 5.5 -40C 100mV/DIV 50 85C 25C DVIN = +0.3V DVIN = -0.3V 1ms/DIV FIGURE 6. LINE TRANSIENT RESPONSE, CL = 0nF FIGURE 5. LINE REGULATION - 3 TEMPS 3 ISL21032 Typical Performance Curves, ISL21032 Low Voltage Output Reference VIN = 3.0V, IOUT = 0mA, TA = 25C Unless Otherwise Specified (Continued) 0 -10 1nF LOAD NO LOAD CL = 500pF 100mV/DIV PSRR (dB) -20 -30 -40 -50 -60 -70 -80 -90 -100 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M 100nF LOAD 10nF LOAD DVIN = -0.3V DVIN = +0.3V 1ms/DIV FIGURE 7. LINE TRANSIENT RESPONSE, CL = 1nF FIGURE 8. PSRR vs f vs CL 0.60 0.50 0.40 0.30 VOUT (mV) 0.20 0.10 0.00 -0.10 -0.20 -0.30 -0.40 -0.50 -0.60 -7 -6 -5 -4 SINKING -3 -2 -1 0 1 2 3 4 5 6 OUTPUT CURRENT SOURCING 7 -40C 25C 130C 200mV/DIV IL = +50A IL = -50A 20s/DIV FIGURE 10. LOAD TRANSIENT RESPONSE @ IL = 50A, CL = 1nF FIGURE 9. LOAD REGULATION vs TEMP DVIN = -7mA DVIN = +7mA 1ms/DIV FIGURE 11. LOAD TRANSIENT RESPONSE @ IL = 7mA, CL = 1nF 3.2 3.0 VIN 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 VOUT, IIN = 10A 0.8 0.6 0.4 0.2 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 TIME (ms) VIN & VOUT (V) 100mV/DIV FIGURE 12. TURN-ON TIME @ TA = 25C 4 ISL21032 Typical Performance Curves, ISL21032 Low Voltage Output Reference VIN = 3.0V, IOUT = 0mA, TA = 25C Unless Otherwise Specified (Continued) 120 100 80 ZOUT () 100nF LOAD NO LOAD 1nF LOAD 10nF LOAD 40 20 0 1 10 100 1K 10K FREQUENCY (Hz) 100K 1M 5V/DIV 60 10s/DIV FIGURE 14. VOUT NOISE 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. Noise Performance and Reduction The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically 30VP-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 -40C to 130C temperature range, measurements are made at 25C 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 = 200 2N2905 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. VIN ISL21032 VOUT 0.6V/50mA 0.001F GND FIGURE 15. PRECISION LOW NOISE, LOW DRIFT, 0.6V, 50mA REFERENCE 5 Packaging Information 3-Lead, SOT23, Package Code H3 0.007 (0.20) B 0.0003 (0.08) 0.046 (1.18) BSC 0.055 (1.40) 0.047 (1.20) 0.093 (2.35) BSC B C L 4X 0.35 H A-B D 0.35 C A-B D 2X N/2 TIPS 1 0.075 (1.90) BSC 2 12 REF. TYP. 0.120 (3.04) 0.110 (2.80) 0.034 (0.88) 0.047 (1.02) 0.038 (0.95) BSC Parting Line Seating Plane 0.0004 (0.01) 0.0040 (0.10) 0.035 (0.89) 0.044 (1.12) 0-8C 0.575 REF. 0.10 R MIN. 0.20 in 0.10 R MIN. SEATING PLANE .024 (0.60) .016 (0.40) NOTES: 1. All dimensions in inches (in parentheses in millimeters). 2. Package dimensions exclude molding flash. 3. Die and die paddle is facing down towards seating plane. 4. This part is compliant with JEDEC Specification TO-236AB. 5. Dimensioning and tolerances per ASME, Y14.5M-1994. All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 6 |
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