EL7536 Data Sheet July 13, 2006 FN7396.8 Monolithic 1A Step-Down Regulator Features 2 2 The EL7536 is a synchronous, integrated FET 1A step-down Less than 0.15in (0.97cm ) footprint for the complete 1A regulator with internal compensation. It operates with an converter input voltage range from 2.5V to 5.5V, which accommodates Components on one side of PCB supplies of 3.3V, 5V, or a Li-Ion battery source. The output Max height 1.1mm MSOP10 can be externally set from 0.8V to V with a resistive IN divider. 100ms Power-On-Reset output (POR) The EL7536 features PWM mode control. The operating Internally-compensated voltage mode controller frequency is typically 1.4MHz. Additional features include a Up to 94% efficiency 100ms Power-On-Reset output, <1A shut-down current, short-circuit protection, and over-temperature protection. <1A shut-down current Overcurrent and over-temperature protection The EL7536 is available in the 10 Ld MSOP package, 2 making the entire converter occupy less than 0.15in of PCB Pb-free plus anneal available (RoHS compliant) area with components on one side only. Both packages are specified for operation over the full -40C to +85C Applications temperature range. PDA and pocket PC computers Ordering Information Bar code readers PART NUMBER PART TAPE & PKG. Cellular phones (BRAND) MARKING REEL PACKAGE DWG. Portable test equipment EL7536IY BDAAA - 10 Ld MSOP MDP0043 Li-Ion battery powered devices EL7536IY-T7 BDAAA 7 10 Ld MSOP MDP0043 Small form factor (SFP) modules EL7536IY-T13 BDAAA 13 10 Ld MSOP MDP0043 EL7536IYZ BFAAA - 10 Ld MSOP MDP0043 Typical Application Diagram (Note) (Pb-free) EL7536 TOP VIEW EL7536IYZ-T7 BFAAA 7 10 Ld MSOP MDP0043 (Note) (Pb-free) V V (2.5V to 5.5V) L O S 1 VIN LX EL7536IYZ-T13 BFAAA 13 10 Ld MSOP MDP0043 1.8H R 100 (Note) (Pb-free) 3 C 1 VDD 10F NOTE: Intersil Pb-free plus anneal products employ special Pb-free C C 2 3 material sets molding compounds/die attach materials and 100% 10F 0.1F EL7536 matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil R 100k 5 Pb-free products are MSL classified at Pb-free peak reflow R * 1 POR temperatures that meet or exceed the Pb-free requirements of 124k C 4 IPC/JEDEC J STD-020. FB EN 470pF R 100k 4 RSI R * 2 100k R 6 Pinout 100k PGND SGND VO EL7536 (10 LD MSOP) (1.8V 1A) TOP VIEW SGND FB 1 10 * V = 0.8V * (1 + R / R ) O 1 2 PGND VO 2 9 3 LX POR 8 4 VIN EN 7 5 VDD RSI 6 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2003-2006. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. NOT RECOMMENDED FOR NEW DESIGNS POSSIBLE SUBSTITUTE PRODUCT ISL97536EL7536 Absolute Maximum Ratings (T = 25C) A V , V , POR to SGND -0.3V to +6.5V Operating Ambient Temperature -40C to +85C IN DD LX to PGND -0.3V to (V + +0.3V) Storage Temperature -65C to +150C IN RSI, EN, V , FB to SGND . -0.3V to (V + +0.3V) Junction Temperature +125C O IN PGND to SGND . -0.3V to +0.3V Peak Output Current . 1.2A CAUTION: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: T = T = T J C A Electrical Specifications V = V = V = 3.3V, C1 = C2 = 10F, L = 1.8H, V = 1.8V, unless otherwise specified. DD IN EN O PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT DC CHARACTERISTICS V Feedback Input Voltage 790 800 810 mV FB I Feedback Input Current 250 nA FB V , V Input Voltage 2.5 5.5 V IN DD V Minimum Voltage for Shutdown V falling 2 2.2 V IN,OFF IN V Maximum Voltage for Startup V rising 2.2 2.4 V IN,ON IN I Supply Current PWM, V = V = 5V 400 500 A DD IN DD EN = 0, V = V = 5V 0.1 1 A IN DD R PMOS FET Resistance V = 5V, wafer test only 70 100 m DS(ON)-PMOS DD R NMOS FET Resistance V = 5V, wafer test only 45 75 m DS(ON)-NMOS DD I Current Limit 1.5 A LMAX T Over-temperature Threshold T rising 145 C OT,OFF T Over-temperature Hysteresis T falling 130 C OT,ON I , I EN, RSI Current V , V = 0V and 3.3V -1 1 V EN RSI EN RSI V , V EN, RSI Rising Threshold V = 3.3V 2.4 V EN1 RSI1 DD V , V EN, RSI Falling Threshold V = 3.3V 0.8 V EN2 RSI2 DD V Minimum V for POR, WRT Targeted V rising 95 % POR FB FB V Value FB V falling 86 % FB V POR Voltage Drop I = 5mA 35 70 mV OLPOR SINK AC CHARACTERISTICS F PWM Switching Frequency 1.4 1.5 1.75 MHz PWM t Minimum RSI Pulse Width Guaranteed by design 25 50 ns RSI t Soft-start Time 650 s SS t Power On Reset Delay Time 80 100 120 ms POR FN7396.8 2 July 13, 2006