lp2985-28d NXP Semiconductors, lp2985-28d Datasheet
lp2985-28d
Available stocks
Related parts for lp2985-28d
lp2985-28d Summary of contents
Page 1
... LP2985-XX Micropower 150 mA low noise, low dropout linear regulator Product data Supersedes data of 2003 Oct 17 INTEGRATED CIRCUITS 2003 Oct 31 ...
Page 2
... Philips Semiconductors Micropower 150 mA low noise, low dropout linear regulator GENERAL DESCRIPTION The LP2985- 150 mA, fixed output voltage regulator designed to provide very low dropout and low noise in battery powered and portable applications. The output voltage is preset to 1.5, 1.8, 2.8, 3.0, 3.3, 3.6, or 5.0 V. Designed with an optimized PNP process, the LP2985-XX achieves ...
Page 3
... Part number marking Each device is marked with a four letter code. The first three letters designate the product. The fourth letter, represented by ‘x’ date tracking code. Part number LP2985-15D LP2985-18D LP2985-25D LP2985-28D LP2985-30D LP2985-33D LP2985-36D LP2985-50D PIN DESCRIPTION PIN SYMBOL ...
Page 4
... OUT(typ 150 mA OUT – + 120 Hz ripple kHz 0. ripple kHz 0. 5.0 V ON/OFF 4 Product data LP2985-XX MIN. TYP. MAX. UNIT – 85 130 A – – 102 % V nom 1.47 1.5 1.53 V 1.764 1.8 1.836 V 2 ...
Page 5
... SL02132 2. 2 2.85 2.80 2.75 2.70 200 250 –50 –25 SL02134 Figure 8. Output voltage versus T 5 Product data LP2985- 0. INPUT VOLTAGE (V) IN SL02131 INPUT VOLTAGE (V) IN SL02133 Figure 6. LIne regulation. ...
Page 6
... SL02138 Figure 12. Output noise voltage 0.1 0.01 200 250 0 SL02140 = 1 F). Figure 14. ESR stability area ( Product data LP2985- 0. 150 100 0 100 1000 f, FREQUENCY (kHz) SL02137 = 0 F). ...
Page 7
... SL02144 Figure 18. Line transient response ( CH1=2V 100 s/div GND V/div GND o SL02146 Figure 20. Turn-on transient response Product data LP2985 CH2=50mV 10 s/div 100 mA/div O GND mV/div ...
Page 8
... Micropower 150 mA low noise, low dropout linear regulator TECHNICAL DISCUSSION As illustrated in Figure 21, the LP2985-XX consists of a band-gap voltage reference, an error amplifier, P-channel pass transistor, current limit circuit and an internal feedback voltage divider. The output voltage is fed back through an internal resistor voltage divider connected to the V pin ...
Page 9
... Input Capacitor An input capacitor of greater than required between the LP2985-XX input pin and the circuit ground (the amount of capacitance may be increased without limit). This capacitor must be located as close as possible to the V or GND pin (not more than away from the pin) and returned to a clean analog ground ...
Page 10
... Philips Semiconductors Micropower 150 mA low noise, low dropout linear regulator PACKING METHOD The LP2985-XX is packed in reels, as shown in Figure 24. GUARD TAPE BAND BARCODE LABEL BOX 2003 Oct 31 REEL ASSEMBLY Figure 24. Tape and reel packing method 10 Product data LP2985-XX TAPE DETAIL COVER TAPE ...
Page 11
... Philips Semiconductors Micropower 150 mA low noise, low dropout linear regulator Plastic small outline package; 5 leads; body width 1.6 mm 2003 Oct 31 11 Product data LP2985-XX SOP003 ...
Page 12
... C”. _2 20031017 Product data (9397 750 12098). ECN 853-2291 29545 of 14 February 2003. Supersedes data of 03 Oct 2001 (9397 750 08962). _1 20011003 Product data (9397 750 08962). ECN 853-2291 27197 of 03 October 2001. 2003 Oct 31 12 Product data LP2985-XX ...
Page 13
... Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Fax: + 24825 Document order number: 13 Product data LP2985-XX Koninklijke Philips Electronics N.V. 2003 All rights reserved. Printed in U.S.A. Date of release: 10-03 9397 750 12242 ...