NCP1522B Adjustable Output Voltage Step
Contents
1. ENABLE 2 OUTPUT POWER TEST POINT This is the test point of the inductor voltage This is the test point of the output voltage http onsemi com 2 TPVIN TP1 CON2 1 VIN VIN E 1 VIN C1 4 7uF EN GND1 GND2 JMP1 JMP2 CN CN EN TPVIN CON2 TS al 1 VIN VIN 2 C1 VIN 4 7uF GND1 GND2 JMP1 JMP2 CN CN NCP1522BUGEVB NCP1522B BOARD SCHEMATIC TPLX TP3 L1 U1 2 2uH SW 1 VIN LX 2 GND 3 EN FB NCP1522 ENABLE Ms 1 2 EN 3 Figure 3 Board Schematic in FB TPLX TP3 1 6 L1 EN 2 2uH SW GND E St vin L NCP1522U FB ENABLE x 1 2 EN 3 Figure 4 Board Schematic in http onsemi com 3 TPVOUT TP4 VOUT VOUT 1 2 R1 C3 510k CON2 18pF C2 R3 R4 4 7uF 330k 250k gt gt SELECT T FIX FIX FIX WIN KO TSOP 5 TPVOUT TP4 VOUT VOUT 1 2 R1 510k C3 CON2 18pF C2 R3 R4 4 7uF 330k lt 250k gt gt K lLo SELECT cows H2 FIX FIX 1 1 1 iii UDFN 6 H4 FIX H4 FIX 1522 NCP1522B TEST PROCEDURE Equipment needed 4 Connect the power supply connector to connectors Power supply Vint and The DC current measurement e Digital Volt Meter Vin line should be around 0 3 uA 5 Close ENABLE connector The DC current e Digital Amp Meter B 5 measurement on Vin line should be around 55 uA Test 6 Measure the output voltage between Vour 1 Jumper ENABLE s2. to 125 Latchup Current Maximum Rating TA 85 C Note 4 Other Pins o s 290 m ESD Withstand Voltage Note 3 Vesd Human Body Model 2 0 m Machine Model 200 Moisture Sensitivity Level Note 5 MSL 1 per IPC Stresses exceeding Maximum Ratings may damage the device Maximum Ratings are stress ratings only Functional operation above the Recommended Operating Conditions is not implied Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability 1 Maximum electrical ratings are defined as those values beyond which damage to the device may occur at TA 25 C 2 According JEDEC standard JESD22 A108B 3 This device series contains ESD protection and exceeds the following tests Human Body Model HBM per JEDEC standard JESD22 A114 Machine Model MM per JEDEC standard JESD22 A115 4 Latchup current maximum rating per JEDEC standard JESD78 5 Standard J STD 020A ELECTRICAL CHARACTERISTICS For Electrical Characteristic please report to our NCP1522B datasheet available on our website www onsemi com NCP1522B BOARD CONNECTIONS Symbol Switch Descriptions INPUT POWER This is the positive connection for power supply This is the return connection for the power supply GND1 GND2 Ground clip SETUP ENABLE To enable the buck converter connect a shorting jumper between ENABLE 1 and ENABLE 2 To disable the buck converter connect a shorting jumper between ENABLE 3 and
3. um cx 10 C1 ON NCP1522B 115 001 8 0207 NCP1522BU TLS P 0049 A O207 BR ENABLE TPEN NE H M Figure 6 Assembly Layer UDFN 6 2 p Figure 7 Part Layout in TSOP 5 Figure 8 Part Layout in UDFN 6 http onsemi com 5 1522 Figure 9 Layer Routing in TSOP 5 Figure 10 Top Layer Routing in UDFN 6 Figure 11 Ground Layer Routing in UDFN 6 Figure 12 Ground Layer Routing in UDFN 6 http onsemi com 6 1522 Figure 13 Power Layer Routing TSOP 5 Figure 14 Power Layer Routing in UDFN 6 Figure 15 Bottom Layer Routing in TSOP 5 Figure 16 Bottom Layer Routing in UDFN 6 ON Semiconductor and are registered trademarks of Semiconductor Components Industries LLC SCILLC SCILLC reserves the right to make changes without further notice to any products herein SCILLC makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does SCILLC assume ary liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation special consequential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters includ
4. NCP1522BUGEVB NCP1522B Adjustable Output Voltage Step Down Converter Evaluation Board User s Manual Overview The NCP1522B step down PWM DC DC converter is optimized for portable applications powered from one cell Li ion or three cell Alkaline NiCd NiMH batteries The part is available in adjustable output voltage versions ranging from 0 9 V to 3 3 V It uses synchronous rectification to increase efficiency and reduce external part count The device also has a built in 3 0 MHz nominal oscillator Figure 1 Board Picture in TSOP 5 Semiconductor Components Industries LLC 2012 April 2012 Rev 1 ON Semiconductor http onsemi com EVAL BOARD USER S MANUAL which reduces component size by allowing smaller inductors and capacitors Automatic switching PWM PFM mode offers improved system efficiency Additional features include integrated soft start cycle by cycle current limiting and thermal shutdown protection The NCP1522B is available in space saving low profile TSOP 5 and UDFN 6 packages Figure 2 Board Picture in UDFN 6 Publication Order Number EVBUM2105 D 1522 MAXIMUM RATINGS Note 1 _ RN 15 Mesimum otoge ENT ENE _ Thermal Resistance Junction to Air TSOP 5 Roja 300 C W UDFN 6 260 Operating Ambient Temperature Range P4010 85 to 85 Storage Temperature Range 55 to 150 EE MSN Junction Operating Temperature MN 40
5. and Africa Technical Support Order Literature http www onsemi com orderlit Phone 303 675 2175 or 800 344 3860 Toll Free USA Canada Phone 421 33 790 2910 Fax 303 675 2176 or 800 344 3867 Toll Free USA Canada Japan Customer Focus Center For additional information please contact your local Email orderlit onsemi com Phone 81 3 5817 1050 Sales Representative EVBUM2105 D
6. hould be open Vour connectors You should see around 1 2 V 2 Jumper SELECT should be closed to 1 2 V voltage operation 3 Set the power supply to 3 6 V and the current limit 7 Remove the ENABLE jumper The DC current of at least 800 mA measurement on Vin line should be back around 0 3 uA NCP1522B BILL OF MATERIAL Manufacturer Designator Description Value Tolerance Part Number IC Converter TSOP 5 ON Semiconductor NCP1522B DC DC UDFN NCP1522BU Ceramic 4 7uF 10V 1096 0805 C1608X5R1A475 Capacitor X5R C2 1 10uF 6 3V 1096 0603 TDK C1608X5HR0J105 capacitor X5R niri ie capacitor COG 2 sx _ es et ee IE SG ORAN NND Inductor 306 1210 LPS3008 222NL 222NL VIN a a Kontek ma _ Cambion 160 1724 02 05 00 ENABLE 3 Pin Jumper 2 54mm TYCO AMP 5 826629 0 Header Molex Waldom 90120 0160 SELECT 1 3x2 Pin Jumper NA NA 2 54mm TYCO AMP 4731955180470 Header Molex Waldom 90131 0140 GND1 Jumper for GND 10 16mm Harwin EE uN 01 GND2 Molex Waldom EE uN 0160 u i TLS P 004 A 1106 BR 50 8mm x 1mm TLS P 003 A 0207 BR 4 Layers http onsemi com 4 1522 NCP1522B PCB LAYOUT Board reference TLS P 001 A 0107 BR Board reference TLS P 001 A 0207 BR gt ENABLE gt
7. ing Typicals must be validated for each customer application by customer s technical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application Buyer shall indemnify and hold SCILLC and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part SCILLC is an Equal Opportunity Affirmative Action Employer This literature is subject to all applicable copyright laws and is not for resale in any manner PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT American Technical Support 800 282 9855 Toll Free Semiconductor Website www onsemi com Literature Distribution Center for ON Semiconductor USA Canada P O Box 5163 Denver Colorado 80217 USA Europe Middle East
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