FAN3180 Single 2-A Gate Driver with 3.3-V 15-mA LDO Gate Driver with LDO for MCU Power March, 2013

FAN3180: Single 2-A Driver + 3.3-V LDO Applications Gate Drive with Power for the MCU Switched-Mode Power Supplies, Consumer Electronics, Portable Hand Tools LDO 3.3-V, 15-mA Output ±1% at 25oC, ±2.5% Total Variation Gate Driver +2.8-A Peak Drive Current at VDD = 12 V +2.4-A/-1.8-A at VOUT = 6 V 23-ns Typical Prop. Delay Times 19-ns tF / 13-ns tR with 1nF Load MillerDrive™ Gate Drive Technology General 5-V to 18-V Operating Range Controlled Startup and Shutdown VON, VOFF UVLO of 4.75 V and 4.55 V 200-µA Maximum Total Static Current 5-Pin SOT-23 Package –40oC to 125oC Operation Many applications use a combination of a microcontroller (MCU) and a gate driver. In these configurations, an external low-dropout regulator (LDO) is needed to power the MCU. The FAN3180 integrates a 3.3-V output voltage regulator to power the microcontroller or ASICs.

FAN3180: Controlled Startup and Shutdown Edge-trigger operation: Output switching only begins after the first VALID rising edge of the input signal (prevents incomplete output pulse at startup and re-startup) Controlled Shutdown When VDD is removed and falls below UVLOOFF, the output immediately terminates regardless of the VIN signal state. VDD Applied when VIN = HIGH Turn Off During VIN = HIGH

FAN3180: Transitioning from Existing Designs Many applications use a gate driver (such as FAN3100) with an external LDO to power a microcontroller (MCU) Designs can transition to the FAN3180 easily saving component count, board space, design time, and cost. For FAN3100TSX designs, four of the five pins are the same as FAN3180. The IN- input (pin 4 on the FAN3100) has been replaced with 3V3 LDO output on the FAN3180. The two diagrams show typical application examples of both the FAN3100 and FAN3180 designs powering a microcontroller. FAN3100 LS Driver and an External LDO FAN3180 with Integrated LDO

Fairchild’s High-Speed Low-Side Gate Driver Family Type Configuration Part Num In. Thres. Packages Released Single 1A Dual Input (CMOS); Non-Inv (Ext) FAN3111 CMOS, Ext SOT23-5 Yes Single 2A Dual Input (+ & -) FAN3100 CMOS, TTL SOT23-5, MLP-6 Single Non-Inverting, 3V3 LDO FAN3180 TTL Dual 2A Dual Inverting FAN3216 SOIC-8 Dual Non-Inverting FAN3217 Dual Inverting + Dual Enable FAN3226 SOIC-8, MLP-8 Dual Non-Inverting + Dual Enable FAN3227 FAN3229 Dual 4A FAN3213 FAN3214 FAN3223 FAN3224 FAN3225 Single 9A Single Inverting + Enable FAN3121 Single Non-Inverting + Enable FAN3122 Bridge 2A 20V Bridge Driver + Dual Enables FAN3268 30V Bridge Driver + Dual Enables FAN3278 FAN3180 is part of Fairchild’s comprehensive High-Speed Low-Side Gate Driver family. CMOS = VDD Ratio Thresholds (Approximately 38% and 55%). Ext = Thresholds proportional to an external reference voltage.

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