LP3927ILQ-AH National Semiconductor, LP3927ILQ-AH Datasheet
LP3927ILQ-AH
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LP3927ILQ-AH Summary of contents
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... V and V must be tied together externally. Collectively called V DD1 DD2 DD3 © 2002 National Semiconductor Corporation Key Specifications n 3.0V to 5.5V Input Voltage Range n Two 200 mA, Two 150 mA and One 100 mA LDO’s n 100 mV typ Dropout Voltage n 150 mA General-Purpose Open-drain programmable current sink for back light LED ...
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... National Semiconductor factory sales office/distributors for availability and specifications. Ordering Information LP3927 Supplied as LP3927 Supplied as 1000 Units, tape and 4500 Units, tape and reel reel LP3927ILQ-AH LP3927ILQX-AH LP3927ILQ-AJ LP3927ILQX-AJ For LDO delay options, please refer to Electrical Characteristics Table. www.national.com I (mA) Voltage Options (V) ...
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Pin Description Pin Name 1 VO1 150 mA, LDO1 output pin. 2 EN5 LDO5 enable input. 3 EN4 LDO4 enable input. 4 EN3 LDO3 enable input. 5 RST Externally pulled high, open drain output to processor/memory reset. 6 IRQ Externally ...
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Functional Block Diagram www.national.com 20037903 4 ...
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... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. All pins except LED_PGM, BYP, op amp’s inputs & output OP_AMP_OUT, IN-, IN+ GND to GND SLUG Junction Temperature Storage Information Soldering Temperature ...
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Electrical Characteristics, Digital Interface Symbol Parameter V Logic Low Output OL V Logic High Input IH V Logic Low Input IL I Input Leakage Current LEAKAGE Electrical Characteristics, Error Flag Symbol Parameter V Error Flag High Th-H V Error Flag ...
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Electrical Characteristics, Operational Amplifier Unless otherwise noted, V OP_AMP_VDD appearing in normal type apply for T J range for operation, −40˚C to +85˚C. (Note 7) Symbol Parameter V Output Swing OUT I Supply Current S SR Slew Rate GBW Gain-Bandwidth ...
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Typical Performance Characteristics 0.01 µ 0.2V 25˚C, Enable pin is tied OUT A PSRR vs Frequency LDO4 Enable Response (Cout=2.2µF) LDO2 (1.8V Option) Load Transient www.national.com Unless otherwise specified ...
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Typical Performance Characteristics 0.01 µ 0.2V 25˚C, Enable pin is tied OUT A LDO4 (2.8V Option) Load Transient LDO2 (1.8V Option) Line Transient LDO4 (2.8V Option) Line Transient Unless otherwise specified, ...
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Note: Diagram indicates Open Drain IRQ tied to V *** = Internal signal 1. Keyboard de-bounce delay, 32 msec typ. 2. Delay between LDO1 reaching 95% of its output voltage and LDO2 enable, 125 µsec typical. 3. Both LDO1 and ...
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Note: Diagram indicates Open Drain IRQ tied to V *** = Internal signal 1. Keyboard de-bounce delay, 32msec typ. 2. Delay between LDO1 reaching 95% of its output voltage and LDO2 enable. 3. Both LDO1 and LDO2 outputs reach 95% ...
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Note: Diagram indicates Open Drain IRQ tied to V *** = Internal signal 1. VEXT goes active low. 2. VEXT 32 msec de-bounce period. 3. Delay between LDO1 and LDO2 enables. 4. Both LDO1 and LDO2 outputs reach 95% of ...
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Note: Diagram indicates Open Drain IRQ tied to V *** = Internal signal 1. VEXT goes active low. 2. VEXT 32 msec de-bounce period. 3. Delay between LDO1 and LDO2 enable. 4. Both LDO1 and LDO2 outputs reach 95% of ...
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Application Hints LP3927 Function Description The LP3927 is designed for cellular/PCS handsets. The LDOs power the microprocessor, RF and digital sections of the phone. When a KYBD debounce of longer than detected by the LP3927, the IRQ ...
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Application Hints (Continued) surement, junction to ambient thermal resistance (θ be improved by as much as two times if a LLP is soldered on the board with thermal land and thermal vias than if not. Consider the following equation: Where ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...