AS1339 EB austriamicrosystems, AS1339 EB Datasheet
AS1339 EB
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AS1339 EB Summary of contents
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... The device is available in a 16-pin WLP (2x2mm) package. Figure 1. AS1339 - Typical Operating Circuit Analog Control PA ON/OFF LDO1 ON/OFF LDO2 ON/OFF www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 2 Key Features Fixed Switching Frequency: 2MHz ! PA Step-Down Converter ! Low Dropout Voltage ! ...
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... AS1339 Datasheet - Pinout Figure 2. Pin Assignments (Top View) Pin Description Table 1. Pin Description Pin Name Pin Number NC A1 AGND A2 REFIN A3 PGND A4 LDO2 B1 PA_EN B2 EN2 www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 NC AGND REFIN PGND PA_EN LDO2 EN2 IN2 TEST IN1B IN1A LDO1 EN1 PAB PAA Description Not Connected. Free, high impedance for normal operation. Used for internal test purpose ...
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... D1 EN1 D2 PAB, PAA D3, D4 www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Description Supply Voltage Input for LDO1 and LDO2. Connect IN2 to a battery or supply voltage from 2.7V to 5.5V. Decouple IN2 with a 1μF ceramic capacitor as close as possible to IN2 and AGND. Connect IN2 to the same source as IN1A and IN1B. ...
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... PGND to AGND LX Current Bypass Current Human Body Model Storage Temperature Range Package Body Temperature Continuous Power Dissipation P D-MAX Junction Temperature (T ) Range J Ambient Temperature (T ) Range A www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 may cause permanent damage to the device. These are stress ratings only, Min Max Units -0 IN1A -0 IN1B ...
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... REFIN gain V /V OUT REFIN REFIN Current LX R Pin-Pin Resistance for PFET DSONP Pin-Pin Resistance for NFET R DSONN PFET Leakage Current NFET Leakage Current PFET Peak Current Limit www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 = V = 3.6V -40ºC to +85ºC. Typical values are at T EN2 A Table 5 on page 7. Condition PA_EN ...
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... Table 4. System Characteristics Symbol Parameter REFIN REFIN gain variation; 1 relative linearity REFIN gain variation; 2 absolute linearity LX Ripple voltage, PWM mode Line_tr Line transient response Load_tr Load transient response www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Condition V rising, 50mV hysteresis REFIN I = 200mA +25° 200mA SW = 5.5V, V ...
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... Part Number C GRM21BR60J106KE01 IN1 C GRM155R61A105KE15 IN2 C C0603C475K8PAC7867 OUT C0402C104K4RAC LDO1 LDO2 L MLP2520S3R3S www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Condition From PA_EN switch from 0V to 1.7V 3.4V 0mA, within 50mV OUT LOAD regulation error V from 0.8V to 3.4V 8Ω, OUT LOAD within 50mV regulation error V from 3.4V to 0.8V 8Ω ...
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... Output Voltage (V) Figure 7. DC-DC REFIN vs OUT LOAD 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.6 1 1.4 1.8 2.2 2.6 Output Voltage (V) www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 = 5Ω Figure 4. DC-DC Efficiency vs. V LOAD 100 Vin = 2.7V Vin = 3.0V 70 Vin = 3.3V Vin = 3.6V 65 Vin = 3. 3.4 3.8 ...
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... Output Current (mA) Figure 13. DC-DC Load Regulation, V OUT V = 0.8V OUT 0.82 0.81 0.8 0.79 0.78 0.77 0. 100 Output Current (mA) www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 = 0.8V Figure 10. DC-DC Efficiency vs. I OUT 100 Vin = 2.7V 60 Vin = 3.0V Vin = 3.3V Vin = 3.6V 50 Vin = 3.9V 40 1000 1 = 1.8V Figure 12. DC-DC Efficiency vs. I ...
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... Input Voltage (V) Figure 19. DC-DC Efficiency 100 2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5 Input Voltage (V) www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 vs Figure 16. DC-DC Load Regulation, V OUT V = 2.2V OUT 2.23 2.22 2.21 2.20 2.19 Vin = 3.0V 2 ...
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... Figure 25. DC-DC Line Regulation, V OUT V = 1.5V OUT 1.53 1.52 1.51 1.50 1.49 1.48 1.47 2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5 Input Voltage (V) www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 22. DC-DC Line Regulation 3.8V OUT 4.5 4 3.5 3 Iout = 300mA Iout = 400mA 2.5 Iout = 500mA Iout = 600mA 2 2 ...
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... Mode Input Voltage (V) Figure 31. DC-DC Switching; V =3.6V =50mA OUT 1µs/Div www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 28. DC-DC Bypass Dropout Voltage vs. Output Current 100 Vin = 2.7V Vin = 3.0V 20 Vin = 3.3V Vin = 3.6V Vin = 3. 100 200 300 400 500 600 700 800 900 1.25 1.5 Figure 30. Shutdown Supply Current vs. V ...
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... V = 4.5V 7.5 IN LOAD 200µs/Div Figure 37. DC-DC Rectangular Wave Output in PWM Mode 4.5V 7.5 IN LOAD 10µs/Div www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Ω Figure 34. DC-DC Shutdown Figure 36. DC-DC Sine Wave Output in Bypass Mode 3.6V Figure 38. DC-DC Rectangular Wave Output in Bypass Ω Mode Revision 1.05 20µs/Div Ω ...
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... V = 200mV RIPPLE PP 0 -10 -20 -30 -40 -50 -60 -70 -80 10 100 1000 10000 Frequency (Hz) www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 40. DC-DC Load Transient; I 500mA, V Figure 42. LDO Line Regulation 2.9 2.88 2.86 2.84 2.82 2.8 2.78 2.76 2.74 both LDO's 2.72 one LDO 2.7 2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5 ...
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... AS1339 Datasheet - Figure 45. LDO Turn ON / OFF Response load 50µs/Div Figure 47. LDO Line Transient 5.5V to 3.5V 10mA OUT 50µs/Div www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 = 3.6V, Figure 46. LDO Load Transient 3.6V IN Figure 48. LDO Line Transient 10mA OUT Revision 1.05 = 0mA to 10mA, OUT 20µs/Div = 4.0V to 3.5V, IN 50µs/Div ...
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... If an increase in load pulls the output down, the error amplifier output increases, which allows the inductor current to ramp higher before the comparator turns off the PFET. This increases the average current sent to the output and www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Bypass FET PFET ...
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... To resume the normal operation the temperature has to drop below 130°C. Note: Continuing operation in thermal overload conditions may damage the device and is considered bad practice. www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 ≤ 2. and thus prevents excessive output ripple as ...
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... Table 6. Recommended Capacitors for the Step-Down Converter Name Part Number GRM21BR60J106KE01 GRM21BR61C475KA88 IN1 OUT C0603C475K8PAC7867 www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 50 shows a typical application. 2.2µH LX PAB C PAA PGND LDO1 C AS1339 ...
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... This is recommended because the inductor current will rise above the calculated value during heavy load tran- sients. The inductor current ripple Δ I (see PFET on-time t (see EQ 2). ON Figure 51. Ripple Current Diagram Lmax Δ OUTmax www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 C Voltage Type 100nF 16V X7R 1µF 10V X5R is defined by the slope of the current ( – OUT ---- - ---------------------------- = × ...
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... Note: For highest efficiency, a low DC-resistance inductor is recommended. Table 8. Recommended Inductors Part Number L MLP2520S1R5S 1.5µH MLP2520S2R2S 2.2µH MLP2520S3R3S 3.3µH EPL2014-222MLC 2.2µH EPL2014-332MLC 3.3µH EPL2014-472MLC 4.7µH XPL2010-222ML 2.2µH XPL2010-332ML 3.3µH www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 × – V OUT IN OUT ΔI ----------------------------------------------------- - = × × Δ ...
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... For a short period of time (~50µs) the peak inductor current can rise value of approx- imately 1.1A (p-channel MOSFET peak current limit). In this case a coil with a rated saturation current of ~800mA can be chosen. www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 53. Efficiency Comparison of different = 1.0V Inductors; V ...
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... IN1 and IN2 path are separated. Both power inputs should be connected at a star point directly at the main supply - To prevent voltage gradients between AGND (A2) and PGND (A4), these pins are connected via a short, low ohmic, trace to each other. Figure 54. Layout for Space Limited Applications www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Figure 54: Revision 1. ...
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... AS1339 Datasheet - Package Drawings and Markings The devices are available in a 16-pin WLP (2x2mm) package. Figure 55. 16-pin WLP (2x2mm) Package 2015±20 www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 257.5±20 Revision 1. ...
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... Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www.austriamicrosystems.com/DC-DC_Step-Down/AS1339 Table 9. Description with two LDOs http://www.austriamicrosystems.com/ICdirect mailto:sales@austriamicrosystems.com http://www.austriamicrosystems.com/distributor Revision 1.05 Delivery Form Package Tape and Reel 16-pin WLP (2x2mm ...
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... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein ...