AS1364-BTDT-18 austriamicrosystems, AS1364-BTDT-18 Datasheet
AS1364-BTDT-18
Specifications of AS1364-BTDT-18
Related parts for AS1364-BTDT-18
AS1364-BTDT-18 Summary of contents
Page 1
... Yes The device features an internal PMOS pass transistor (for a low supply current of only 35µA), reset output, a low-power shutdown mode, and protection from short- circuit and thermal-overload conditions. The AS1364 is available in an 8-pin TDFN 3x3mm pack- age. Figure 1. Block Diagram ...
Page 2
... Voltage-Setting Input. Connect to GND to select the factory-preset output voltage. Connect this pin to an external resistor-divider for adjustable-output operation Figure 1 on page 7 SET/BYP Bypass Pin. Connect a 10nF capacitor from this pin to OUT to improve PSRR and noise performance. (AS1364-AD does not offer this feature) Ground 8 GND www.austriamicrosystems.com POK ...
Page 3
... AS1364 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 3 and functional operation of the device at these or any other conditions beyond those indicated in istics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 3. Absolute Maximum Ratings ...
Page 4
... AS1364 Data Sheet - Electrical Characteristics 500mV +2.0V (whichever is greater),C IN OUT IN otherwise specified). Typical values are at T Table 4. Electrical Characteristics Symbol Parameter V Input Voltage IN V Power On Reset POR Output Voltage Accuracy (Preset Mode) Adjustable Output Voltage V OUT Range SET/BYP Voltage Threshold ...
Page 5
... AS1364 Data Sheet - Table 4. Electrical Characteristics (Continued) Symbol Parameter Shutdown I Shutdown Supply Current OFF Input Threshold Input Bias Current SHDNN POK Output V POK Output Low Voltage OL Operating Voltage Range for Valid POK Signal POK Output High leakage Current POK Threshold Thermal Protection ...
Page 6
... AS1364 Data Sheet - Typical Operating Characteristics 0.5V 4.7µ OUT IN OUT Figure DROP OUT 160 140 120 100 200 400 600 Load Current (mA) Figure 5. V vs. Temperature; V OUT OUT(NOM) 3.32 3.315 3.31 3.305 3.3 3.295 3.29 3.285 -45 -30 - Temperature (°C) Figure 7. Quiescent Current vs. V ...
Page 7
... AS1364 Data Sheet - Figure 9. Quiescent Current vs. Temperature -45 -30 - Temperature (°C) Figure 11. PSRR vs. Frequency; I OUT -20 -30 -40 -50 -60 -70 -80 -90 10 100 1000 10000 Frequency (Hz) www.austriamicrosystems.com Figure 10. Spectral Noise vs. Freq 0.1 no load Iout = 250mA 0. 0.01 0.1 = 10mA 100000 Revision 1.00 = 10mA, OUT COUT = 3.3µF ...
Page 8
... AS1364 Data Sheet - Figure 12. Line Transient Response 3.8V to 4.3V 100mA IN OUT 100µs/Div Figure 14. Startup 3.8V 100mA IN OUT 1ms/Div www.austriamicrosystems.com Figure 13. Load Transient Response 3.8V 100mA OUT 500µs/Div Figure 15. Startup 3.8V 20µs/Div Revision 1.00 = 100mA OUT ...
Page 9
... Data Sheet - Detailed Description The AS1364 output voltage is factory-trimmed or is adjustable from +1.2 to +5V, and is guaranteed to supply 1A of out- put current. The device consists of a +1.20V internal reference, error amplifier, MOSFET driver, P-channel pass tran- sistor, internal feedback voltage-divider and a comparator Figure 16 ...
Page 10
... Note: POK is low during shutdown. Current Limiter The AS1364 features current limiting circuitry that monitors the pass transistor, limiting short-circuit output current to 1.5A (typ). The circuitry of the AS1364 allows that the output can be shorted to ground for an indefinite period of time without damaging the device. Thermal Protection Integrated thermal overload protection limits the total power dissipation in the AS1364 ...
Page 11
... AS1364 Data Sheet - Application Information Capacitor Selection and Regulator Stability Input and output capacitors are required for stable operation of the AS1364 over the full temperature range and with load currents up to 1A. Connect C and C IN trace inductance. Input Capacitor For 4.7µF capacitor between IN and ground is sufficient and may be smaller than 4.7µ ...
Page 12
... AS1364 Data Sheet - Package Drawings and Markings The device is available in an 8-pin TDFN 3x3mm package. Figure 18. 8-pin TDFN 3x3mm Package D PIN 1 INDEX AREA aaa C 2x (D/2 xE/2) 4 TOP VIEW e Term inal Tip e/2 D atum RMINA L SIDE Symbol Min Typ A 0.70 0. ...
Page 13
... The device is available as the standard products shown in Table 5. Ordering Information Model Marking AS1364-BTDT-AD ASRF AS1364-BTDT-12* ASRN AS1364-BTDT-15* ASRA AS1364-BTDT-18* ASRB AS1364-BTDT-30* ASRC AS1364-BTDT-33* ASRD AS1364-BTDT-45* ASRE All devices are RoHS compliant and free of halogene substances. *Future product. Non-standard devices are available between 1.4V and 4.6V in 50mV steps and between 4.6V and 5.0V in 100mV steps ...
Page 14
... AS1364 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...