TS30041/42 High E ciency 1A/2A Current-Mode Synchronous Buck Converter, 1MHz TRIUNE PRODUCTS Features Description Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V The TS30041 (1A) and TS30042 (2A) are DC/DC synchronous with +/- 2% output tolerance switching regulators with fully integrated power switches, Adjustable version output voltage range: 0.9V to (VCC - internal compensation, and full fault protection. The switching 1V) with +/- 1.5% reference frequency of 1MHz enables the use of small lter components Wide input voltage range: 4.5V to 40V (42V Abs Max) resulting in minimal board space and reduced BOM costs. 1MHz +/- 10% xed switching frequency The TS30041/42 utilizes current mode feedback in normal Continuous output current: 1A (TS30041), 2A (TS30042) regulation PWM mode. When the regulator is placed in High ciency up to 95% standby (EN is low), the device draws less than 10uA quiescent Current mode PWM control with PFM mode for improved current. light load ciency Voltage supervisor for VOUT reported at the Power Good The TS30041/42 integrates a wide range of protection circuitry (PG) pin including input supply under-voltage lockout, output voltage Input supply under voltage lockout soft start, current limit, and thermal shutdown. Soft start for controlled startup with no overshoot Full protection for over-current, over-temperature, and The TS30041/42 includes supervisory reporting through VOUT over-voltage the PG (Power Good) open drain output to interface other SYNC function on EN/SYNC pin to control switching fre- components in the system. quency Less than 10uA in standby mode Summary Spec cation Low external component count Junction operating temperature -40 C to 125 C Applications Packaged in a 16pin QFN (3x3) ROHS: Product is lead-free, Halogen Free, RoHS/WEEE On-card switching regulators compliant Set-top box, DVD, LCD, LED supply Industrial power supplies Typical Application Circuit TS30041/42 1 of 18 www.semtech.com Final Datasheet Rev 2.2 July 27, 2016Pin Con guration Figure 1: 16 Lead 3x3 QFN, Top View Pin Description Pin Pin Symbol Function Description 1 VSW Switching Voltage Node Connected to 4.7uH (typical) inductor 2 VCC Input Voltage Input voltage 3 VCC Input Voltage Input voltage 4 GND GND Primary ground for the majority of the device except the low-side power FET Regulator FB Voltage. Connects to VOUT for xed mode and the output Feedback Input 5 FB resistor divider for adjustable mode 6 NC No Connect Not Connected 7 NC No Connect Not Connected 8 PG Power Good Output Open-drain output Above 2.2V the device is enabled. GND the pin to put device in standby 9 EN/SYNC Enable & Sync Input mode. Includes internal pull-up. Also used for SYNC function Bootstrap capacitor for the high-side FET gate driver. A ceramic capacitor in Bootstrap Capacitor 10 BST the range 15 nF - 200 nF from BST pin to VSW pin 11 VCC Input Voltage Input Voltage 12 VSW Switching Voltage Node Connected to 4.7uH (typical) inductor 13 VSW Switching Voltage Node Connected to 4.7uH (typical) inductor 14 PGND Power GND GND supply for internal low-side FET/integrated diode 15 PGND Power GND GND supply for internal low-side FET/integrated diode 16 VSW Switching Voltage Node Connected to 4.7uH (typical) inductor 17 PAD Power PAD Power GND TS30041/42 2 of 18 www.semtech.com Final Datasheet Rev 2.2