ADP2503-4.5-EVALZ Analog Devices Inc, ADP2503-4.5-EVALZ Datasheet
ADP2503-4.5-EVALZ
Specifications of ADP2503-4.5-EVALZ
Related parts for ADP2503-4.5-EVALZ
ADP2503-4.5-EVALZ Summary of contents
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... Input voltage: 2 5.5 V Input voltage: 2 5.5 V Fixed output voltage: 2 5.0 V Fixed output voltage: 2 5.0 V 600 mA (ADP2503) and 1000 mA (ADP2504) output options 600 mA (ADP2503) and 1000 mA (ADP2504) output options Boost converter configuration with load disconnect Boost converter configuration with load disconnect SYNC pin with three different modes: ...
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... ADP2503/ADP2504 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Typical Application Circuit ............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 11 Power Save Mode ........................................................................ 11 REVISION HISTORY 10/08—Revision 0: Initial Version Soft Start ...................................................................................... 11 Sync Function ...
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... Parameters Conditions INPUT CHARACTERISTICS Input Voltage Range Undervoltage Lockout Threshold V Undervoltage Lockout Threshold V OUTPUT CHARACTERISTICS Output Voltage Range Feedback Impedance Output Voltage Initial Accuracy ADP2503/ADP2504 (PWM operation, no load) Load and Line Regulation V V CURRENT CHARACTERISTICS Quiescent Current ( OUT Shutdown Current T SWITCH CHARACTERISTICS ...
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... ADP2503/ADP2504 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating PVIN, VIN, SW1, SW2, VOUT, SYNC, −0 EN, FB PGND to AGND −0 0.3 V Operating Ambient Temperature −40°C to +85°C Operating Junction Temperature −40°C to +125°C Storage Temperature −65°C to +150°C Lead Temperature Soldering (10 sec) 300° ...
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... Power Input. This the input to the buck-boost power switches. Place a 10 μF capacitor between PVIN and PGND as close as possible to the ADP2503/ADP2504 Enable. Drive EN high to turn on the ADP2503/ADP2504. Bring EN low to put the part into shutdown mode. 7 SYNC The SYNC pin permits the ADP2503/ADP2504 to operate in three different modes. ...
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... ADP2503/ADP2504 TYPICAL PERFORMANCE CHARACTERISTICS 700 600 500 400 300 200 100 0 2.3 2.8 3.3 3.8 INPUT VOLTAGE (V) Figure 3. ADP2503 Output Current vs. Input Voltage 1100 1000 900 800 700 600 500 400 300 200 100 0 2.3 2.8 3.3 3.8 INPUT VOLTAGE (V) Figure 4. ADP2504 Output Current vs. Input Voltage ...
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... V) Figure 13. Frequency vs. Input Voltage Over Temperature (V OUT 4.8 5.3 = 3.3 V) OUT Rev Page ADP2503/ADP2504 3.35 3.33 3.31 3.29 3.27 3.25 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 I (A) OUT Figure 12. Load Regulation ( OUT –40°C +25° ...
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... ADP2503/ADP2504 SW1 4 SW2 OUT CH1 50.0mV CH2 1.00V M40.0µ CH3 5.00V CH4 5.00V T 18.20 Figure 15. Line Transient, PWM Mode ( OUT V IN SW1 4 SW2 OUT CH1 50.0mV M40.0µs CH2 1.00V 18.20% CH3 5.00V CH4 5.00V W W Figure 16. Line Transient, PWM Mode ( ...
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... Figure 24. Typical PWM Switching Waveform, Buck-Boost Operation = 3.3 V) OUT 3.3V OUT A CH3 2.40V Figure 25. Typical PSM Switching Waveform, Buck-Boost Operation = 3.3 V) OUT 3.3V OUT A CH4 2.40V = 3.3 V) OUT Rev Page ADP2503/ADP2504 3.3V OUT SW2 3 SW1 OUT 1 B CH2 250mA Ω CH1 20.0mV M 400ns A CH4 W B ...
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... ADP2503/ADP2504 SW1 4 V OUT CH1 2.00V CH2 500mAΩ M 100µ 9.400% CH3 5.00V CH4 5.00V W W Figure 27. Startup into PWM Mode (V OUT V = 3.3V OUT A CH3 2.40V = 3 mA) OUT Rev Page SW1 4 V OUT V OUT CH1 2.00V CH2 500mAΩ M 100µs ...
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... OUT SYNC FUNCTION When the SYNC pin is high, PSM is deactivated. The ADP2503/ ADP2504 always operate in PWM using the internal oscillator. When the SYNC pin is switching in the 2.2 MHz to 2.8 MHz range, quency applied on SYNC and then locks on it. When the SYNC pin stops switching, the regulator switching frequency slides back to the internal oscillator frequency ...
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... SHORT-CIRCUIT PROTECTION When the nominal inductor peak current value of 1 reached, the ADP2503/ADP2504 first switch off the NMOS2 transistor if it was active. If the current thereafter continues to increase by an extra amount of 200 mA, the PMOS1 transistor is also switched off ...
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... If the ADP2503/ADP2504 are operating in buck mode, the worst-case voltage ripple occurs for the highest input voltage the ADP2503/ADP2504 are operating in boost mode, the IN. worst-case voltage ripple occurs for the lowest input voltage, V The maximum voltage overshoot, or undershoot, is inversely proportional to the value of the output capacitor. To ensure stability and excellent transient response recommended to use a minimum of 22 μ ...
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... ADP2503/ADP2504 Input Capacitor Selection The ADP2503/ADP2504 require an input capacitor to filter noise on the VIN pin, and provide the transient currents while maintaining constant input and output voltage μF X5R/ X7R ceramic capacitor rated for 6 the minimum recom- mended input capacitor. Increased input capacitance reduces the amplitude of the switching frequency ripple on the battery ...
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... PCB LAYOUT GUIDELINES Poor layout can affect ADP2503/ADP2504 performance, caus- ing electromagnetic interference (EMI) and electromagnetic compatibility (EMC) performance, ground bounce, and voltage losses. Poor layout can also affect regulation and stability. A good layout is implemented using the following rules: • Place the inductor, input capacitor, and output capacitor close to the IC using short tracks ...
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... A ADP2504ACPZ-3.3-R7 1 ADP2504ACPZ-3.5- ADP2504ACPZ-4.2-R7 1 ADP2504ACPZ-4.5- ADP2504ACPZ-5.0-R7 1 ADP2503-2.8-EVAL-Z 1 ADP2503-3.3-EVAL-Z 1 ADP2503-3.5-EVAL-Z 1 ADP2503-4.2-EVAL-Z 1 ADP2503-4.5-EVAL-Z 1 ADP2503-5.0-EVAL-Z 1 ADP2504-2.8-EVAL-Z 1 ADP2504-3.3-EVAL-Z 1 ADP2504-3.5-EVAL-Z 1 ADP2504-4.2-EVAL-Z 1 ADP2504-4.5-EVAL-Z 1 ADP2504-5.0-EVAL RoHS Compliant Part. ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07475-0-10/08(0) ...