SC196AMLTRT Semtech, SC196AMLTRT Datasheet
SC196AMLTRT
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SC196AMLTRT Summary of contents
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... Space-saving lead-free package — MLP-10 3mm Applications Cell phones Wireless communication chipset power Personal media player Notebook and sub-notebook computers PDAs and mobile communicators WLAN peripherals L1 SC196A VIN LX 4.7μH EN SYNC/PWM VOUT VID0 VID1 PGND MODE GND 1 SC196A V OUT 1.05V 1.5A C OUT 10μF www.semtech.com ...
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... Electrical Characteristics Unless otherwise noted 3.6V SYNC/PWM = Parameter Symbol Input Voltage Range VOUT Accuracy VOUT Temperature Accuracy V Line Regulation V Load Regulation (PWM) V PSAVE Regulation V P-Channel On Resistance N-Channel On Resistance Start-Up Time P-Channel Current Limit © 2008 Semtech Corp. Symbol OUT V LX θ ( ...
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... SYNC Frequency (upper) SYNC Frequency (lower) UVLO Threshold (upper) UVLO Hysteresis Thermal Shutdown Thermal Shutdown Hysteresis Logic Input High Logic Input Low Logic Input Current High Logic Input Current Low © 2008 Semtech Corp. Conditions SYNC/PWM = GND OUT OUT OUT(Programmed) ...
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... MLP10: 3X3 10 LEAD Marking Information 196A yyww xxxx yy = two digit year of manufacture ww = two digit week of manufacture xxxx = lot number © 2008 Semtech Corp. Ordering Information DEVICE SC196AMLTRT SC196AEVB Ordering Information 10 LX Notes: (1) Lead-free packaging only. This product is fully WEEE and RoHS compliant. 9 PGND (2) Available in tape and reel only ...
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... POWER MANAGEMENT Block Diagram EN 4 SYNC OSC & Slope 3 /PWM Generator 500mV Ref 2 MODE Voltage VID1 7 Select VID0 6 VOUT 5 © 2008 Semtech Corp. Plimit Amp Control Logic PWM Comp PSAVE Error Amp Comp 5 SC196A PRELIMINARY 1 VIN Current Amp 10 LX Nlimit Amp 9 PGND 8 GND www ...
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... If not connected, the output voltage will be indeterminate. 8 GND Ground 9 PGND Power Ground 10 LX Inductor connection to the switching FETs © 2008 Semtech Corp. to select 100% duty cycle function; MODE = GND to disable 100% duty IN for forced PWM mode or GND to allow the part to enter PSAVE IN 6 SC196A PRELIMINARY www.semtech.com ...
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... Protection Features The SC196A provides the following protection features: • Thermal shutdown • Current limit © 2008 Semtech Corp. • Over-voltage protection • Soft-start Thermal Shutdown The device has a thermal shutdown feature to protect the SC196A if the junction temperature exceeds 145°C. ...
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... PSAVE Mode at Light Load V OUT -2% Inductor Current 0 A Time © 2008 Semtech Corp. PSAVE levels are set high to minimize the undershoot when exiting PSAVE. The lower PSAVE comparator level is set +0.7% above V at +1.5% above OUT If PSAVE operation is required, then a 22μF output capacitor must be used ...
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... If PSAVE operation is required, the minimum capacitor value is 22μF. © 2008 Semtech Corp. Output voltage ripple is a combination of the voltage ripple from the charge - discharge cycle of the output capacitor and the voltage created by the inductor ripple current passing through the output capacitor ESR ...
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... Place the inductor and fi lter capacitors as close to the device as possible and use short wide traces between the power components. GND V IN © 2008 Semtech Corp. 2. Route the output voltage feedback path away from the inductor and LX node to minimize noise and magnetic interference. 3. ...
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... I (A) OUT PWM to PSAVE Hysteresis 95 PSAVE Entry for decreasing I OUT 90 85 PSAVE MODE I decreasing OUT PWM Mode 0.001 0.01 I (A) OUT © 2008 Semtech Corp. = 1.8V OUT 100 V =4.2V PWM IN =3.6V PWM 0 1.2V OUT 100 =4.2V PWM IN 80 =3.6V PWM ...
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... Quiescent Current vs. Input Voltage PWM Mode 6 5.5 5 4.5 4 3.5 3 2.5 3 3.5 4 4.5 V (V) IN © 2008 Semtech Corp. 1.8025 1.8020 1.8015 1.8010 1.8005 1.8000 1.7995 1.7990 1.7985 1.7980 1.7975 5.0 5 ° -40 ° 0. ° ...
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... V =1.8V, l =1.4A, IN OUT OUT SYNC/PWM=1.15MHz ext clock PWM Operation Time (1us/div) Condition V =3.6V, V =1.8V, l =150mA, IN OUT OUT SYNC/PWM=V IN © 2008 Semtech Corp. Switching Frequency vs. Temperature 1050 1040 1030 1020 1010 1000 990 980 970 960 950 -50 -30 4.7 5.2 V (50mV/div) ...
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... V =1.8V, l =10mA, IN OUT OUT SYNC/PWM=V IN Load Transient Response PSAVE Time (100us/div) Condition V =3.6V, V =1.8V, l =1A to 100 mA, IN OUT OUT SYNC/PWM=GND © 2008 Semtech Corp. Load Transient Response PWM EN (2V/div) V (1V/div) OUT l (100mA/div) IN Condition V =3.6V VID Code Change V (100mV/div) OUT I (1A/div) ...
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... C IN 10μF Sleep Flag from uProc Changes voltage From 1. 1.0V with Forced PWM and no 100% Duty Cycle OUT V IN 2. 10μF © 2008 Semtech Corp. SC196A VIN μ VOUT SYNC/PWM VID0 PGND VID1 MODE GND L1 SC196A VIN LX 4.7μ ...
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... POWER MANAGEMENT Outline Drawing - MLP- PIN 1 INDICATOR (LASER MARK) aaa LxN N e NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS TERMINALS. © 2008 Semtech Corp. B INCHES DIM MIN A .031 A1 .000 - A2 b .007 E C .074 D .042 E .114 ...
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... POWER MANAGEMENT Land Pattern - MLP- NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805) 498-2111 Fax: (805) 498-3804 © 2008 Semtech Corp. K DIM INCHES Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 www ...