MAX1567ETL+ Maxim Integrated Products, MAX1567ETL+ Datasheet
MAX1567ETL+
Specifications of MAX1567ETL+
Related parts for MAX1567ETL+
MAX1567ETL+ Summary of contents
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... ONSD AUX1 ON3(LED) ON1 AUX2 ON2 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Camera Power Supplies 95% Efficient Step-Up DC-to-DC Converter 0.7V Minimum Input Voltage Main DC-to-DC Configurable as Either Step-Up or ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies ABSOLUTE MAXIMUM RATINGS SDOK, AUX1OK, SCF, ON_, FB_, PV, PVSU, SUSD to GND ....................................................... -0.3V to +6V PG_ to GND...........................................................-0.3V to +0.3V DL1, DL3, INDL2, PVM, PVSD to GND …-0.3V to (PVSU + 0.3V) ...
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... Step-up mode (SUSD = PVSU) Idle Mode Trip Level Step-down mode (SUSD = GND) Step-up mode (SUSD = PVSU) Current-Sense Amplifier Transresistance Step-down mode (SUSD = GND) Idle Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ Camera Power Supplies = 3.6V 0°C to +85°C, unless otherwise noted.) A CONDITIONS = 0V, PVSU = 3 ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies ELECTRICAL CHARACTERISTICS (continued) = 3.6V PVSU PV PVM PVSD INDL2 PARAMETER Step-up mode (SUSD = PVSU) Maximum Duty Cycle (Note 6) Step-down mode (SUSD ...
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Six-Channel, High-Efficiency, Digital ELECTRICAL CHARACTERISTICS (continued PVSU PV PVM PVSD INDL2 PARAMETER FB3L Regulation Voltage AUX1, AUX2 Transconductance AUX3 FBL or FBH to CC Transconductance FB_ Input Leakage ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies ELECTRICAL CHARACTERISTICS = 3.6V PVSU PV PVM PVSD INDL2 PARAMETER GENERAL Input Voltage Range (Note 2) Step-Up Minimum Startup I LOAD Voltage (Note 2) ...
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Six-Channel, High-Efficiency, Digital ELECTRICAL CHARACTERISTICS (continued PVSU PV PVM PVSD INDL2 PARAMETER Main Step-Down Voltage SUSD = GND, PVM must be greater than output (Note 6) Adjust Range PVM Undervoltage Lockout ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies ELECTRICAL CHARACTERISTICS (continued) = 3.6V PVSU PV PVM PVSD INDL2 PARAMETER AUX3 FBL or FBH to CC Transconductance FB_ Input Leakage Current DL_ Driver ...
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Six-Channel, High-Efficiency, Digital (T = +25°C, unless otherwise noted.) A STEP-UP EFFICIENCY vs. LOAD CURRENT 100 ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies (T = +25°C, unless otherwise noted.) A NO-LOAD INPUT CURRENT vs. INPUT VOLTAGE (SWITCHING) 3 3. 5. ...
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Six-Channel, High-Efficiency, Digital (T = +25°C, unless otherwise noted.) A MAIN (STEP-UP MODE) AND STEP-DOWN STARTUP WAVEFORMS 2ms/div STEP-UP LOAD TRANSIENT RESPONSE 1ms/div MAIN (STEP-DOWN MODE) LOAD TRANSIENT RESPONSE 0V 0A (MAIN AS ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies PIN NAME AUX3 Controller Voltage Feedback Input. Connect a resistive voltage-divider from the step-up converter output to FBH to set the output voltage. The feedback threshold is 1.25V. This pin is high 1 FB3H ...
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Six-Channel, High-Efficiency, Digital PIN NAME Step-Up Converter Compensation Node. Connect a series resistor-capacitor from this pin to GND for 16 CCSU compensating the converter control loop. This pin is actively driven to GND in shutdown, overload, and thermal limit. See ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies PIN NAME AUX2 Controller Feedback Input. This 31 FB2 pin is high impedance in shutdown. Voltage Input for AUX2 Gate Driver. The voltage 32 INDL2 at INDL2 sets the high gate-drive voltage. 33 GND ...
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Six-Channel, High-Efficiency, Digital Detailed Description The MAX1566/MAX1567 include the following blocks to build a multiple-output digital camera power-supply system. Both devices can accept inputs from a variety of sources including 1-cell Li+ batteries, 2-cell alkaline or NiMH batteries, and even ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies V BATT 1 Li+ 2.8V TO 4.2V C1 1µF D2–D5 LEDS R3 V 10Ω Figure 1. Typical 1-Cell Li+ Powered System (3.3V logic is stepped ...
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Six-Channel, High-Efficiency, Digital V BATT 2 AA 1. 1µF R1 1MΩ R2 D2–D5 90.9kΩ LEDS 10Ω Figure 2. Typical 2-Cell AA-Powered System (3.3V ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies V BATT Li+ 1.5V TO 4.2V C1 1µF R1 1MΩ R2 D2–D5 90.9kΩ LEDS 10Ω Figure 3. Li+ ...
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Six-Channel, High-Efficiency, Digital V SU 2.35V ONSU V REF 1V ONSU OSC CCSU FBSU STEP-UP SOFT-START TIMER DONE (SUSSD) CCSD FBSD ONSD CC_ FB_ ON_ Figure 4. MAX1566 Functional Diagram ______________________________________________________________________________________ Camera Power Supplies INTERNAL POWER- NORMAL OK MODE STARTUP ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies Core Step-Down DC-to-DC Converter The step-down DC-to-DC is optimized for generating low output voltages (down to 1.25V) at high efficiency. The step-down runs from the voltage at PVSD. This pin can be connected directly ...
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Six-Channel, High-Efficiency, Digital FB2 CC2 REF 0.85 REF OSC FB CC REF 0.85 REF OSC IN 1024 CLOCK CYCLES, SOFT-START RAMPS UP REFI FROM MAX1566/MAX1567 AUX_ BOOST CONTROLLERS AND RAMPS DOWN REFI FROM ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies OSC OSC V REF C OSC (1.25V) 200ns ONE-SHOT MAX1566 MAX1567 Figure 6. Oscillator Functional Diagram TO V BATT MAX1566 MAX1567 (PARTIAL) PVSU DL3 R1 FB3H (1.25V) FB3L R2 D2–D5 (0.2V) ...
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Six-Channel, High-Efficiency, Digital MAX1567 TO V BATT (PARTIAL) INDL2 DL2 AUX2 INVERTING FB2 PWM REF Figure 10. Regulated -7.5V Negative CCD (Bias is provided by conventional inverter (works only with the MAX1567).) L1 10µ BATT C2 1µF ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies INPUT 1-CELL Li PVSU C2 DL_ PART OF Q1 MAX1566 MAX1567 (PARTIAL) FB_ Figure 13. SEPIC Converter Additional Boost-Buck Channel CURRENT- SUSD OR DOWN CURRENT- Figure 15. Using ...
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Six-Channel, High-Efficiency, Digital Figure 16. AUX1OK Drives an External PFET that Gates 5V Supply to the CCD After the +15V CCD Bias Supply Is Up The MAX1566/MAX1567 channels feature a soft-start function that limits inrush current and prevents exces- sive ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies step-up UVLO immediately triggers and shuts down all channels. The step-up then continues to attempt start- ing. If the step-up output short remains, these attempts cannot succeed since PVSU remains near ground ...
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Six-Channel, High-Efficiency, Digital up may have difficulty starting into heavy loads (see the Minimum Startup Voltage vs. Load Current (OUTSU) graph in the Typical Operating Characteristics); however, this can be remedied by connecting an external P- channel load switch driven ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies The inductor is typically selected to operate with contin- uous current for best efficiency. An exception might be if the step-up ratio greater than OUT ...
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Six-Channel, High-Efficiency, Digital For the example 68kΩ x 6.8nF / 10Ω = 46µF OUT Choose 47µF for the available C OUT stantially different from the calculated value, insert the available C value into the above ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies For the example 27kΩ x 6.8nF / 5.14Ω = 35.7µF OUT Since ceramic capacitors are common in either 22µF or 47µF values, 22µF is within a factor of two of the ideal ...
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Six-Channel, High-Efficiency, Digital The C R zero is then used to cancel the [(2V C LOAD OUT OUT AUX Step-Up, Continuous Inductor Current Continuous inductor current can sometimes improve ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies In that case RAMP ( |)] [g / (2π REF OUT M Place (2π ...
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Six-Channel, High-Efficiency, Digital If different magnitudes are required for the positive and negative voltages, a linear regulator can be used at one of the outputs to achieve the desired voltages. One such connection is shown in Figure 12. This circuit ...
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Six-Channel, High-Efficiency, Digital Camera Power Supplies Designing a PC Board Good PC board layout is important to achieve optimal performance from the MAX1566/MAX1567. Poor design can cause excessive conducted and/or radiated noise. Conductors carrying discontinuous currents and any high-current path ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 35 © 2004 Maxim Integrated Products ...