LP2951 Fairchild Semiconductor, LP2951 Datasheet
LP2951
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LP2951 Summary of contents
Page 1
... Internal Block Diagram ©2010 Fairchild Semiconductor Corporation Description The LP2951 is an adjustable micro power voltage regulator suitable for use in battery-powered systems. This regulator has various functions such as alarm which warns of a low output voltage, often due to falling batteries on the input, the external shutdown which enables the regulator to be switched on and off, current and temperature limiting ...
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... LP2951 Absolute Maximum Ratings Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction-Air Storage Temperature Range Operating Junction Temperature Range 2 Symbol Value V -0 Internally Limited D θJA R 127.5 T -65 ~ +150 STG T -40 ~ +125 OPR Unit V W °C/W °C °C ...
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... OFF. OUT Min. Typ. Max ≤ 28V ≤ 100mA - - - - - - - - - - 110 165 = 100uA 1.235 1.26 1.285 L 1.225 1.26 1.295 =400uA - 150 0.6 1 450 . AMAX LP2951 Unit - ppm/°C 0.4 % 0.3 % 150 mV 600 mV 140 220 400 140 2.0 V 100 uA 750 uA 3 ...
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... LP2951 Typical Performance Characteristics 2.0 1.6 1.2 0.8 0.4 0.1 1 LOAD CURRENT(mA) Figure 1. Quiescent Current 250 5V OUTPUT 200 150 100 INPUT VOLTAGE(V) Figure 3. Input Current 5.06 5V OUTPUT 5.04 5.02 5.00 4.98 4.96 4.94 -50 - TEMPERATURE( Figure 5. Output Voltage vs. Temperature 4 10 100 R =50K L R =∞ 100 125 OUTPUT R =50KΩ ...
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... Voltage 600 500 400 300 200 100 0 -50 - TEMPERATURE( Figure 7. Dropout Voltage (Continued) 500 I = 100mA L 400 300 200 = 100 μ 100 L 0 0.1 75 100 125 o C) Figure 8. Dropout Voltage Fig. 8 Dropout Voltage 100 ) OUTPUT CURRENT(mA LP2951 5 ...
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... CO is required between the output and ground for stability at output voltages more. since IFB is controlled to less than 40nA, the error associated with this term is negligible in most applications. At lower output voltage, more capacitance is required. without this capacitance the part will oscillate ERROR V OUT KA78RLOOD LP2951 GND REF ...
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... Mechanical Dimension Package #1 #4 0.156 0.50 ±0.20 ±0.008 0.020 8-SOP ±0.20 1.55 0.061 ±0.008 #8 #5 6.00 ±0.30 1.80 MAX ±0.012 0.236 0.071 3.95 ±0.20 ±0.008 5.72 0.225 Dimensions in millimeters 0.1~0.25 MIN 0.004~0.001 LP2951 7 ...
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... LP2951 Ordering Information Product Number LP2951CM DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...