NCP6356B Configurable 5.0 A ACOT Step Down Converter The NCP6356B is a synchronous ACOT (Adaptive Constant Ontime) buck converter optimized to supply the different sub systems of portable applications powered by one cell LiIon or three www.onsemi.com cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 5.0 A, with programmable output voltage from 0.6 V to 1.4 V. Operation at up to 2.4 MHz switching frequency allows the use of MARKING small components. Synchronous rectification and automatic PFM DIAGRAM PseudoPWM (PPWM) transitions improve overall solution efficiency. The NCP6356B is in a space saving, low profile 6356Bx 2.0 x 1.6 mm CSP20 package. WLCSP20 AWLYWW CASE 568AG Features Input Voltage Range from 2.5 V to 5.5 V: Battery and 5 V Rail x = blank: production Powered Applications = S: 0.95 V = N: 1.20 V Programmable Output Voltage: 0.6 V to 1.4 V in 6.25 mV Steps A = Assembly Location Up to 2.4 MHz Switching Frequency with On Chip Oscillator WL = Wafer Lot Uses 330 nH Inductor and at least 22 F Capacitors for Optimized Y = Year WW = Work Week Footprint and Solution Thickness = PbFree Package PFM/PPWM Operation for Optimum Efficiency PbFree indicator, G or microdot ( ), Low 60 A Quiescent Current may or may not be present 2 I C Control Interface with Interrupt and Dynamic Voltage Scaling Support PIN OUT Enable / VSEL Pins, Power Good / Interrupt Signaling 1 2 3 4 Thermal Protections and Temperature Management Transient Load Helper: Share the Same Rail with Another Rail A VSEL EN SCL FB Small 2.0 x 1.6 mm / 0.4 mm Pitch CSP Package These are PbFree Devices PGND PGND B SDA AGND INTB* PG* Typical Applications Smartphones C PGND PGND PGND PGND Webtablets NCP6356B D1 AVIN D AVIN PVIN SW SW PVIN D2 Supply Input AGND Core E1 B4 E2 4.7 uF Thermal Protection SW E PVIN PVIN SW D3 DCDC SW Enable Control EN D4 A2 Operating 5.0 A E3 Input 330 nH E4 Mode (Top View) Voltage VSEL A1 Control Selection *Optional 22 uF C1 PGND PGND Output B3 C2 Power Fail C3 PG Monitoring C4 ORDERING INFORMATION PGND B2 Interrupt INTB FB A4 See detailed ordering and shipping information on page 30 of DCDC SDA Processor B1 I C Up to 2.4 MHz Sense 22 uF Core this data sheet. Processor I C Controller Control Interface SCL A3 Figure 1. Typical Application Circuit Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: May, 2016 Rev. 0 NCP6356B/DNCP6356B PVIN POWER INPUT PVIN PVIN SUPPLY INPUT AVIN Core ANALOG GROUND AGND SW 5.0 A SW SWITCH NODE Thermal DCDC Protection SW SW POWER GOOD Output Voltage PG (optional) Monitoring ENABLE CONTROL INPUT EN Up to 2.4 MHz Operating DCDC converter PGND Mode Control VOLTAGE SELECTION VSEL Controller PGND POWER GROUND PGND PGND INTERRUPT OUTPUT INTB (optional) Logic Control 2 SCL FB FEEDBACK Sense PROCESSOR I C Interrupt CONTROL INTERFACE I2C SDA Figure 2. Simplified Block Diagram www.onsemi.com 2