6.5mm DATASHEET ISL8203M FN8661 Rev 4.00 Dual 3A/Single 6A Step-Down DC/DC Power Module May 12, 2016 The ISL8203M is an integrated step-down power module rated Features for dual 3A output current or 6A current sharing operation. Dual 3A and single 6A switching power supply Optimized for generating low output voltages down to 0.8V, the ISL8203M is ideal for any low power low voltage applications. High efficiency, up to 95% The supply voltage range is from 2.85V to 6V. The two Input voltage range: 2.85V to 6V channels are 180 out-of-phase for input RMS current and EMI Output voltage range: 0.8V to 5V reduction. Each channel is capable of 3A output current. They can be combined to form a single 6A output in current sharing Internal digital soft-start: 1.5ms mode. While in current sharing mode, the interleaving of the External synchronization up to 4MHz two channels reduces input and output voltage ripple. Compact size: 9.0mmx6.5mmx1.83mm The ISL8203M offers an independent Power-Good (PG) signal Peak current limiting and hiccup mode short-circuit for each channel. When shut down, the ISL8203M discharges protection the output capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection Overcurrent protection and over-temperature protection. Applications The ISL8203M integrates a PWM controller, synchronous switching MOSFETs, inductors and passive components to C/P, FPGA and DSP power maximize efficiency and minimize external component count. Plug-in DC/DC modules for routers and switchers The ISL8203M is available in a thermally-enhanced, compact Test and measurement systems QFN package. Barcode reader Related Literature AN1941, ISL8203MEVAL2Z Evaluation Board User Guide INPUT OUTPUT1 2.85V TO 6V 1.5V/3A VIN1 VOUT1 1800pF 100k 2x22F 3x22F VIN2 FB1 VDD 113k EN1 SGND EN2 ISL8203M OUTPUT2 SS 1.8V/3A SYNC VOUT2 1800pF 100k 3x22F FB2 1.83mm 80.6k PGND SGND FIGURE 1. TYPICAL APPLICATION CIRCUIT - DUAL 3A FIGURE 2. SMALL FOOTPRINT PACKAGE WITH LOW PROFILE FN8661 Rev 4.00 Page 1 of 18 May 12, 2016 9mmISL8203M COMP RC SHUTDOWN SS SO FT- NETWORK START VIN1 SHUTDOWN 1F EN1 BANDGAP PWM 0.8V + 1H REFEREN CE EAMP LOGIC VOUT1 COMP CONTROLLER PROTECTION SW1 DRIVER 3pF FB1 PGND SLO PE 1.6k + COMP + CSA1 PGOOD COMPARATORS VIN1 1M PG1 SYNC OSCILLATOR 1ms DELAY SGN D OCP THRESHOLD SHUTDOWN THERMAL LOGIC SHUTDOWN RC SS SO FT- NETWORK SHUTDOWN START VIN2 SHUTDOWN EN2 1F BANDGAP 0.8V EAMP PWM + REFEREN CE 1H LOGIC VOUT2 COMP CONTROLLER PROTECTION SW2 DRIVER 3pF FB2 PGND SLO PE + COMP 1.6k + CSA2 PGOOD COMPARATORS VIN2 PG2 1ms DELAY SGN D FIGURE 3. INTERNAL BLOCK DIAGRAM FN8661 Rev 4.00 Page 2 of 18 May 12, 2016 + +