Low Noise LDO

® ISL9008A Data Sheet April 16, 2007 FN6300.2 Low Noise LDO with Low IQ, High PSRR ISL9008A is a high performance single low noise, high PSRR LDO that delivers a continuous 150mA of load current. It has a low standby current and is stable with 1μF of MLCC output capacitance with an ESR of up to 200mΩ. The ISL9008A has a high PSRR of 65dB and output noise less than 45μVRMS. When coupled with a no load quiescent current of 46μA (typical), and 0.5μA shutdown current, the ISL9008A is an ideal choice for portable wireless equipment. The ISL9008A comes in several fixed voltage options with ±1.8% output voltage accuracy over temperature, line and load. Other output voltage options are available on request. Features • High performance LDO with 150mA continuous output • Excellent transient response to large current steps • Excellent load regulation: <0.1% voltage change across full range of load current • High PSRR: 65dB @ 1kHz • Wide input voltage capability: 2.3V to 6.5V • Very low quiescent current: 46μA • Low dropout voltage: typically 200mV @ 150mA • Low output noise: typically 45μVRMS @ 100μA (1.5V) • Stable with 1µF to 4.7μF ceramic capacitors Pinouts ISL9008A (5 LD SC-70) TOP VIEW VIN GND EN 1 2 3 4 NC 5 VO • Shutdown pin turns off LDO with 1μA (max) standby current • Soft-start limits input current surge during enable • Current limit and overheat protection • ±1.8% accuracy over all operating conditions • 5 Ld SC-70 package or 6 Ld μTDFN package • -40°C to +85°C operating temperature range • Pb-free plus anneal available (RoHS compliant) ISL9008A (6 LD 1.6x1.6 μTDFN) TOP VIEW VO GND NC 1 2 3 6 5 5 4 Applications • PDAs, cell phones and smart phones • Portable instruments, MP3 players • Handheld devices including medical handhelds VIN NC EN 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. Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL9008A Ordering Information PART NUMBER (Note 2) ISL9008AIENZ-T ISL9008AIEMZ-T ISL9008AIEKZ-T ISL9008AIEJZ-T ISL9008AIEHZ-T ISL9008AIEFZ-T ISL9008AIECZ-T ISL9008AIEBZ-T ISL9008AIRUBZ-T ISL9008AIRUCZ-T ISL9008AIRUFZ-T ISL9008AIRUHZ-T ISL9008AIRUJZ-T ISL9008AIRUKZ-T ISL9008AIRUMZ-T ISL9008AIRUNZ-T NOTES: 1. For other output voltages, contact Intersil Marketing. 2. 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. PART MARKING CBV CBT CBS CBR CBP CBN CBM CBL P Q R S T V W Y VO VOLTAGE (V) (Note 1) 3.3 3.0 2.85 2.8 2.75 2.5 1.8 1.5 1.5 1.8 2.5 2.75 2.8 2.85 3.0 3.3 TEMP. RANGE (°C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 PACKAGE Tape and Reel (Pb-free) 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 5 Ld SC-70 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN 6 Ld µTDFN PKG. DWG. # P5.049 P5.049 P5.049 P5.049 P5.049 P5.049 P5.049 P5.049 L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A L6.1.6x1.6A 2 FN6300.2 April 16, 2007 ISL9008A Absolute Maximum Ratings Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7.1V All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VIN+0.3V) Thermal Information Thermal Resistance θJA (°C/W) 5 Ld SC-70 Package (Note 3) . . . . . . . . . . . . . . . . . 231 6 Ld μTDFN Package (Note 4) . . . . . . . . . . . . . . . . 125 Junction Temperature Range . . . . . . . . . . . . . . . . .-40°C to +125°C Operating Temperature Range . . . . . . . . . . . . . . . . .-40°C to +85°C Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C Recommended Operating Conditions Ambient Temperature Range (TA) . . . . . . . . . . . . . . .-40°C to +85°C Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 to 6.5V CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 3. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature range of the device as follows: TA = -40°C to +85°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1μF; CO = 1μF SYMBOL TEST CONDITIONS MIN TYP MAX UNITS PARAMETER DC CHARACTERISTICS Supply Voltage Ground Current Shutdown Current UVLO Threshold VIN IDD IDDS VUV+ VUVQuiescent condition: IO = 0μA 2.3 46 0.5 1.9 1.6 Initial accuracy at VIN = VO + 0.5V, IO = 10mA, TJ = +25°C VIN = VO + 0.5V to 6.5V, IO = 10μA to150mA, TJ = +25°C VIN = VO + 0.5V to 6.5V, IO = 10μA to 150mA, TJ = -40°C to +125°C -0.7 -0.8 -1.8 150 175 IO = 150mA; VO < 2.5V IO = 150mA; 2.5V ≤ VO ≤ 2.8V IO = 150mA; 2.8V < VO 265 300 250 200 140 110 2.1 1.8 6.5 66 1.2 2.3 2.0 +0.7 +0.8 +1.8 V μA μA V V % % % mA Regulation Voltage Accuracy Maximum Output Current Internal Current Limit Drop-out Voltage (Note 6) IMAX ILIM VDO1 VDO2 VDO3 Continuous 355 500 400 325 mA mV mV mV °C °C Thermal Shutdown Temperature AC CHARACTERISTICS Ripple Rejection (Note 5) TSD+ TSD- IO = 10mA, VIN = 2.8V(min), VO = 1.8V @ 1kHz @ 10kHz @ 100kHz 65 45 35 dB dB dB Output Noise Voltage (Note 5) VO = 1.5V, TA = +25°C BW = 10Hz to 100kHz, IO = 100μA BW = 10Hz to 100kHz, IO = 10mA 45 65 μVRMS μVRMS μs μs/V DEVICE START-UP CHARACTERISTICS Device Enable Time LDO Soft-start Ramp Rate tEN tSSR Time from assertion of the ENx pin to when the output voltage reaches 95% of the VO(nom) Slope of linear portion of LDO output voltage ramp during start-up 250 30 500 60 3 FN6300.2 April 16, 2007 ISL9008A Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature range of the device as follows: TA = -40°C to +85°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1μF; CO = 1μF (Continued) SYMBOL TEST CONDITIONS MIN TYP MAX UNITS PARAMETER EN PIN CHARACTERISTICS Input Low Voltage Input High Voltage Input Leakage Current Pin Capacitance NOTES: VIL VIH IIL, IIH CPIN Informative -0.3 1.4 0.4 VIN + 0.3 0.1 5 V V μA pF 5. Guaranteed by characterization 6. VOx = 0.98*VOx(NOM); Valid for VOx greater than 1.85V. Typical Performance Curves 0.8 0.6 OUTPUT VOLTAGE, VO (%) 0.4 +25°C 0.2 0.0 -0.2 +85°C -0.4 -0.6 -40°C -0.8 3.4 3.8 4.2 4.6 5.0 5.4 5.8 6.2 6.6 INPUT VOLTAGE (V) -0.4 3.3 3.8 4.3 4.8 5.3 5.8 6.3 VO = 3.3V ILOAD = 0mA OUTPUT VOLTAGE CHANGE (%) 0.1 IO = 0mA 0.0 0.2 VO = 3.3V +25°C -0.1 IO = 75mA IO = 150mA -0.2 -0.3 INPUT VOLTAGE (V) FIGURE 1. OUTPUT VOLTAGE vs INPUT VOLTAGE (3.3V OUTPUT) FIGURE 2. OUTPUT VOLTAGE CHANGE (%) vs INPUT VOLTAGE (3.3V OUTPUT) 1.0 0.8 OUTPUT VOLTAGE CHANGE (%) 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 0 25 50 75 100 125 LOAD CURRENT - IO (mA) 150 175 +25°C +85°C -40°C VIN = 3.8V VO = 3.3V OUTPUT VOLTAGE (%) 0.10 0.08 0.06 0.04 0.02 0.00 -0.02 IO = 150mA -0.04 -0.06 -0.08 -0.10 -40 -25 0 25 TEMPERATURE (°C) 55 85 IO = 75mA IO = 0mA VIN = 3.8V VO = 3.3V FIGURE 3. OUTPUT VOLTAGE vs LOAD CURRENT FIGURE 4. OUTPUT VOLTAGE vs TEMPERATURE 4 FN6300.2 April 16, 2007 ISL9008A Typical Performance Curves (Continued) 3.4 3.3 3.2 OUTPUT VOLTAGE, VO (V) 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.6 3.1 3.6 4.1 4.6 5.1 INPUT VOLTAGE (V) 5.6 6.1 6.6 2.3 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 INPUT VOLTAGE (V) IO = 0mA IO = 75mA IO = 150mA VO = 3.3V +25°C OUTPUT VOLTAGE, VO (V) 2.8 2.9 2.7 IO = 0mA 2.6 IO = 75mA IO = 150mA VO = 2.8V +25°C 2.4 2.5 FIGURE 5. DROPOUT VOLTAGE vs INPUT VOLTAGE (3.3V OUTPUT) FIGURE 6. DROPOUT VOLTAGE vs INPUT VOLTAGE (2.8V OUTPUT) 250 225 200 VO = 3.3V DROP OUT VOLTAGE, VDO (mV) 200 DROP OUT VOLTAGE, VDO (mV) 175 150 125 100 75 50 25 +25°C -40°C +85°C 150 VO = 2.8V 100 VO = 3.3V 50 0 0 25 50 75 100 125 OUTPUT LOAD (mA) 150 175 0 0 25 50 75 100 125 150 175 OUTPUT LOAD (mA) FIGURE 7. DROPOUT VOLTAGE vs LOAD CURRENT FIGURE 8. DROPOUT VOLTAGE vs LOAD CURRENT 90 140 120 GROUND CURRENT (µA) +85°C 100 +25°C 80 60 40 20 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 0 25 50 75 100 125 150 175 INPUT VOLTAGE (V) LOAD CURRENT (mA) -40°C +85°C 75 GROUND CURRENT (µA) 60 45 +25°C 30 -40°C 15 VO = 3.3V IO = 0µA 0 1.5 VIN = 3.8V VO = 3.3V FIGURE 9. GROUND CURRENT vs INPUT VOLTAGE FIGURE 10. GROUND CURRENT vs LOAD 5 FN6300.2 April 16, 2007 ISL9008A Typical Performance Curves (Continued) 115 105 GROUND CURRENT (µA) 95 85 75 65 55 45 IL = 0mA 35 -40 -30 -20 -10 0 10 20 30 40 50 TEMPERATURE (°C) 60 70 80 90 IL = 75mA VIN = 3.8V VO = 3.3V VEN (V) VO(V) IL = 150mA 3 2 1 0 5 0 VIN = 5.0V VO = 3.3V IL = 150mA CL = 1µF 0 100 200 300 400 500 600 700 800 900 1000 TIME (µs) FIGURE 11. GROUND CURRENT vs TEMPERATURE FIGURE 12. TURN ON/TURN OFF RESPONSE VO = 3.3V ILOAD = 150mA CLOAD =