DATASHEET ISL97536 FN6279 Rev 1.00 Monolithic 1A Step-Down Regulator with Low Quiescent Current November 2, 2007 The ISL97536 is a synchronous, integrated FET 1A Features step-down regulator with internal compensation. It operates 2 Less than 0.15in footprint for the complete 1A converter with an input voltage range from 2.5V to 6V, which accommodates supplies of 3.3V, 5V, or a Li-ion battery Components on one side of PCB source. The output can be externally set from 0.8V to V IN Max height 1.1mm MSOP10 with a resistive divider. 100ms Power-On-Reset output (POR) The ISL97536 features PWM control with a 1.4MHz typical Internally-compensated voltage mode controller switching frequency. The typical no load quiescent current is only 500A. Additional features include a 100ms Power-On- Up to 95% efficiency Reset output, <1A shutdown current, short-circuit <1A shutdown current protection, and over-temperature protection. 500A quiescent current The ISL97536 is available in the 10 Ld MSOP package, 2 making the entire converter occupy less than 0.15in of PCB Hiccup mode overcurrent and over-temperature protection area with components on one side only. The 10 Ld MSOP Pb-free (RoHS compliant) package is specified for operation over the full -40C to +85C temperature range. Applications PDA and pocket PC computers Ordering Information Bar code readers PART NUMBER PART PACKAGE PKG. DWG. Cellular phones (Note) MARKING (Pb-Free) Portable test equipment ISL97536IUZ 7536Z 10 Ld MSOP MDP0043 Li-ion battery powered devices ISL97536IUZ-TK* 7536Z 10 Ld MSOP MDP0043 Tape and Reel Small form factor (SFP) modules ISL97536IUZ-T* 7536Z 10 Ld MSOP MDP0043 Tape and Reel Pinout and Typical Application Diagram ISL97536 *Please refer to TB347 for details on reel specifications. (10 LD MSOP) NOTE: These Intersil Pb-free plastic packaged products employ TOP VIEW special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed R * 2 the Pb-free requirements of IPC/JEDEC J STD-020. 100k 1 SGND FB 10 C R * 4 1 124k 2 PGND VO 9 C C 1 2 470pF L 1 10F 10F 3 LX POR 8 POR 1.8H V (1.8V 600mA) O 4 7 EN VIN EN R 3 V (2.5V-6V) S 100 5 VDD RSI 6 RSI R C 6 3 0.1F 100k R 4 100k R 5 100k * V = 0.8V * (1 + R /R ) O 1 2 FN6279 Rev 1.00 Page 1 of 8 November 2, 2007ISL97536 Absolute Maximum Ratings (T = +25C) Thermal Information A V , V , PG to SGND . -0.3V to +6.5V Thermal Resistance (Typical, Note 1) (C/W) IN DD JA LX to PGND -0.3V to (V + +0.3V) IN 10 Ld MSOP Package . 130 SYNC, EN, V , FB to SGND . -0.3V to (V + +0.3V) O IN Operating Ambient Temperature -40C to +85C PGND to SGND . -0.3V to +0.3V Storage Temperature -65C to +150C Continuous Output Current 1A Junction Temperature +125C Pb-free reflow profile see link below