MAX8500 MAXIM [Maxim Integrated Products], MAX8500 Datasheet
MAX8500
Related parts for MAX8500
MAX8500 Summary of contents
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... The MAX8500–MAX8504 are available in a 12-lead 4mm x 4mm thin QFN package (0.8mm max height). N-CDMA/W-CDMA Cellular Phones Wireless PDAs and Modems Typical Operating Circuit INPUT 2 ...
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... Continuous Power Dissipation (T 12-Lead Thin QFN (derate 16.9mW/ C above +70 C) .1349mW Operating Temperature Range ...........................- +85 C Junction Temperature ......................................................+150 C + 0.3V) BATT Storage Temperature Range .............................- +150 C Lead Temperature (soldering, 10s) .................................+300 C = 1.932V (MAX8500, MAX8502), V REFIN A CONDITIONS BATT V rising, 1% hysteresis UVLO BATT ...
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... Logic Input Low Logic Input Current THERMAL SHUTDOWN Thermal-Shutdown Temperature Thermal-Shutdown Hysteresis Note 2: Specifications to -40°C are guaranteed by design and not subject to production test. Note 3: Guaranteed by design, not production tested. _______________________________________________________________________________________ for N-CDMA/W-CDMA Handsets = 1.932V (MAX8500, MAX8502), V REFIN CONDITIONS I = 180mA 3.6V LX BATT N ...
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... SKIP = GND LOAD 50 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) MAX8504 DROPOUT VOLTAGE vs. LOAD CURRENT 0.25 0.20 0.15 0.10 0. 3.5V OUT HP = BATT 0 0 100 200 300 400 500 600 700 800 900 1000 LOAD CURRENT (mA) MAX8500/MAX8503 ENTERING REGULATOR DROPOUT REGION 3.50 3.45 3.40 3.35 3.30 3. 3.4V; OUT SKIP = BATT 3.20 0 300 600 900 1200 1500 LOAD CURRENT (mA) ...
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... MAX8500 toc14 V 2V/div V AC-COUPLED 5mV/div V = 3.6V 0.4V IN OUT LOAD = 10 400ns/div HEAVY-LOAD SWITCHING WAVEFORM MAX8500 toc12 V = 3.6V 3.3V IN OUT LOAD = 10 400ns/div LIGHT-LOAD SWITCHING WAVEFORM IN SKIP MODE MAX8500 toc15 3.6V 0.4V IN OUT LOAD = 10 OUT 2 s/div V LX 2V/div V OUT AC-COUPLED 2mV/div V LX 2V/div V OUT AC-COUPLED 20mV/div ...
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... OUT LOAD = 600mA 100 s/div REFIN TRANSIENT RESPONSE MAX8500 toc17 REFIN 1V/div V OUT SKIP = BATT 1V/div SKIP = GND V = 3.6V, LOAD = REFIN = 0.455 TO 1.932V 20 s/div LINE-TRANSIENT RESPONSE MAX8500 toc19 V OUT AC-COUPLED 10mV/div V = 3.5V TO 4.5V 1.5V IN OUT LOAD = 500mV/div 100 s/div V OUT AC-COUPLED ...
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... V with a settling time <30µs (Figure 1). The BATT MAX8504 uses external feedback resistors to set the out- put voltage from 1.25V to 2.5V. The MAX8500–MAX8504 operate at a high 1MHz switching frequency that reduces external component _______________________________________________________________________________________ for N-CDMA/W-CDMA Handsets Ground Reference Bypass Pin. Connect a 0.22µF ceramic capacitor from this pin to GND. ...
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... PWM Buck Converters with Bypass FET for N-CDMA/W-CDMA Handsets INPUT 2. Figure 1. MAX8500–MAX8503 Functional Diagram and Typical Operating Circuit The MAX8500–MAX8504 use a fixed-frequency, current- mode, PWM controller capable of achieving 100% duty cycle. Current-mode feedback provides cycle-by-cycle current limiting, superior load and line response, as well as overcurrent protection for the internal MOSFET and rectifier ...
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... The MAX8500–MAX8504 do not operate with battery voltages below the UVLO threshold of 2.35V (typ). The output remains off until the supply voltage exceeds the UVLO threshold. This guarantees the integrity of the output voltage regulation ...
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... PA is lowered from low as 0.4V to greatly reduce battery cur- BATT rent. Figure 3 shows the typical CDMA PA load profile. The use of DC-to-DC converters such as the MAX8500– MAX8503 dramatically extends talk time in these appli- cations. The MAX8500–MAX8503s’ output voltage is dynamically adjustable from 0. ...
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... I OUT I V RMS OUT V IN Compensation, Stability, and Output The MAX8500–MAX8504 are externally compensated by placing a resistor and a capacitor (see Figures 1 and 2, R and series from COMP to GND additional capacitor (C ) may be required from COMP f to GND if high-ESR output capacitors are used. The capacitor integrates the current from the transconduc- tance amplifier, averaging output capacitor ripple ...
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PWM Buck Converters with Bypass FET for N-CDMA/W-CDMA Handsets Table 1. Suggested Inductors PART MANUFACTURER NO. Murata LQH3C Sumida CDRH2D18 Taiyo Yuden LBLQ2016 Toko D312F Table 2. Manufacturers of Suggested Components MANUFACTURER PHONE Murata 770-436-1300 847-956-0666 (USA) Sumida 81-3-3607-5111 (Japan) ...
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PWM Buck Converters with Bypass FET (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ for N-CDMA/W-CDMA Handsets Package Information PACKAGE OUTLINE 12,16,20,24L QFN THIN, ...
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PWM Buck Converters with Bypass FET for N-CDMA/W-CDMA Handsets (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any ...