DATASHEET NOT RECOMMENDED FOR NEW DESIGNS POSSIBLE SUBSTITUTE PRODUCT ISL97536 EL7536 FN7396 Rev 8.00 Monolithic 1A Step-Down Regulator July 13, 2006 The EL7536 is a synchronous, integrated FET 1A step-down Features regulator with internal compensation. It operates with an 2 2 Less than 0.15in (0.97cm ) footprint for the complete 1A input voltage range from 2.5V to 5.5V, which accommodates converter supplies of 3.3V, 5V, or a Li-Ion battery source. The output can be externally set from 0.8V to V with a resistive Components on one side of PCB IN divider. Max height 1.1mm MSOP10 The EL7536 features PWM mode control. The operating 100ms Power-On-Reset output (POR) frequency is typically 1.4MHz. Additional features include a Internally-compensated voltage mode controller 100ms Power-On-Reset output, <1A shut-down current, short-circuit protection, and over-temperature protection. Up to 94% efficiency The EL7536 is available in the 10 Ld MSOP package, <1A shut-down current 2 making the entire converter occupy less than 0.15in of PCB Overcurrent and over-temperature protection area with components on one side only. Both packages are Pb-free plus anneal available (RoHS compliant) specified for operation over the full -40C to +85C temperature range. Applications Ordering Information PDA and pocket PC computers PART NUMBER PART TAPE & PKG. Bar code readers (BRAND) MARKING REEL PACKAGE DWG. Cellular phones EL7536IY BDAAA - 10 Ld MSOP MDP0043 Portable test equipment EL7536IY-T7 BDAAA 7 10 Ld MSOP MDP0043 Li-Ion battery powered devices EL7536IY-T13 BDAAA 13 10 Ld MSOP MDP0043 Small form factor (SFP) modules EL7536IYZ BFAAA - 10 Ld MSOP MDP0043 (Note) (Pb-free) Typical Application Diagram EL7536IYZ-T7 BFAAA 7 10 Ld MSOP MDP0043 EL7536 (Note) (Pb-free) TOP VIEW EL7536IYZ-T13 BFAAA 13 10 Ld MSOP MDP0043 V V (2.5V to 5.5V) L O (Note) (Pb-free) S 1 VIN LX 1.8H NOTE: Intersil Pb-free plus anneal products employ special Pb-free R 100 3 C 1 material sets molding compounds/die attach materials and 100% VDD 10F matte tin plate termination finish, which are RoHS compliant and C C 2 3 compatible with both SnPb and Pb-free soldering operations. Intersil 10F 0.1F EL7536 Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of R 100k 5 IPC/JEDEC J STD-020. R * 1 POR 124k C 4 EN FB 470pF Pinout R 100k 4 RSI R * 2 100k R 6 EL7536 (10 LD MSOP) 100k PGND TOP VIEW SGND VO (1.8V 1A) 1 SGND FB 10 2 PGND VO 9 * V = 0.8V * (1 + R / R ) O 1 2 3 LX POR 8 4 VIN EN 7 5 VDD RSI 6 FN7396 Rev 8.00 Page 1 of 9 July 13, 2006EL7536 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 Rev 8.00 Page 2 of 9 July 13, 2006