TS30041Q/42Q High Efficiency 1A/2A Current-Mode Synchronous Buck Converter, 2.2MHz TRIUNE PRODUCTS Features Description Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V The TS30041Q (1A) and TS30042Q (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 2.2 MHz enables the use of small filter components Wide input voltage range: 4.5V to 40V (42V Abs Max) resulting in minimal board space and reduced BOM costs. 2.2MHz 10% fixed switching frequency The TS30041Q/42Q utilizes current mode feedback in normal Continuous output current: 1A for TS30041Q and 2A for TS30042Q regulation PWM mode. When the regulator is placed in standby (EN is low), the device draws less than 10uA quiescent current. High efficiency up to 90% Current mode PWM control with PFM mode for improved The TS30041Q/42Q integrates a wide range of protection light load efficiency circuitry including input supply under-voltage lockout, output Voltage supervisor for V reporting (Power Good) OUT voltage soft start, current limit and thermal shutdown. Input supply under voltage lockout and soft start Full protection for over-current, over-temperature, and The TS30041Q/42Q includes supervisory reporting through V over-voltage OUT 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 with low external com - ponent count Summary Specification AEC-Q100 Grade-2 qualified Junction operating temperature -40C to +125C Packaged in a 16pin QFN (3x3) Applications ROHS: Product is lead-free, Halogen Free, RoHS/WEEE compliant Power rails in automotive applications Industrial power supplies Typical Application Circuit TS30041Q/42Q 1 www.semtech.com Final Datasheet Rev 2.0Pin Configuration Figure 1: 16 Lead 3x3 QFN, Top View Pin Description Pin Pin Symbol Function Description 1 VSW Switching Voltage Node Connected to 4.7H (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 fixed 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 4.7H (typical) inductor 13 VSW Switching Voltage Node Connected to 4.7H (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 4.7H (typical) inductor PAD Power PAD Power GND TS30041Q/42Q 2 www.semtech.com Final Datasheet Rev 2.0