MP2151GTF-P

MP2151 5.5V, 1A, Synchronous Step-Down Converter with 25μA IQ and Output Discharge in an Ultra-Small Package DESCRIPTION FEATURES The MP2151 is a monolithic, step-down, switchmode converter with built-in, internal power MOSFETs. The MP2151 achieves 1A of continuous output current from a 2.5V to 5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V.         The constant-on-time (COT) control scheme provides fast transient response and eases loop stabilization. Full protection features include cycle-by-cycle current limiting and thermal shutdown. The MP2151 is ideal for a wide range of applications including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems. The MP2151 requires a minimal number of readily available, standard, external components and is available in ultra-small SOT563 or UTQFN (1.2mmx1.6mm) packages.       Low IQ: 25μA 1.1MHz Switching Frequency EN for Power Sequencing 1% FB Accuracy Wide 2.5V to 5.5V Operating Input Range Output Adjustable from 0.6V Up to 1A Output Current 80mΩ and 50mΩ Internal Power MOSFET Switches 100% Duty On Output Discharge Output Over-Voltage Protection (OVP) Short-Circuit Protection (SCP) with Hiccup Mode Power Good (PG) only for Fixed Output Version Available in a SOT563 or UTQFN (1.2mmx1.6mm) Package APPLICATIONS      Wireless/Networking Cards Portable Instruments Battery-Powered Devices Low-Voltage I/O System Power Multi-Function Printers All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION L1 1μH VIN 5V VIN = 5V, L1 = 1µH (DCR = 27mΩ) SW 100 OUT C1 10μF R1 200kΩ MP2151 EN C2 10μF FB GND R2 200kΩ Adjustable Output Reversion 95 EFFICIENCY(%) VIN EN Efficiency vs. Output Current VOUT 1.2V/1A 90 85 80 Vo=3.3V 75 Vo=1.2V 70 Vo=1.8V 65 Vo=2.5V 60 0.001 0.010 0.100 1.000 IO(A) MP2151 Rev. 1.0 1/7/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 MP2151 – 1A SYNCHRONOUS STEP-DOWN SWITCHER WITH 25µA IQ ORDERING INFORMATION Part Number* MP2151GTF MP2151GTF-12 MP2151GTF-15 MP2151GTF-18 MP2151GTF-25 MP2151GTF-33 Package Top Marking See below See below See below See below See below See below SOT563 VOUT Range Adjustable Fixed 1.2V Fixed 1.5V Fixed 1.8V Fixed 2.5V Fixed 3.3V * For Tape & Reel, add suffix –Z (e.g. MP2151GTF–Z). TOP MARKING (MP2151GTF) TOP MARKING (MP2151GTF-12) AZD: Product code of MP2151GTF Y: Year code LLL: Lot number BBD: Product code of MP2151GTF-12 Y: Year code LLL: Lot number TOP MARKING (MP2151GTF-15) BBE: Product code of MP2151GTF-15 Y: Year code LLL: Lot number TOP MARKING (MP2151GTF-18) BBF: product code of MP2151GTF-18 Y: Year code LLL: Lot number TOP MARKING (MP2151GTF-25) BBG: Product code of MP2151GTF-25 Y: Year code LLL: Lot number TOP MARKING (MP2151GTF-33) BBH: Product code of MP2151GTF-33 Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW GND 1 SW TOP VIEW 6 OUT GND 1 6 OUT 2 5 FB SW 2 5 PG VIN 3 4 EN VIN 3 4 EN SOT563 Adjustable Version MP2151GTF MP2151 Rev. 1.0 1/7/2019 SOT563 Fixed Vo Version MP2151GTF-12, MP2151GTF-15, MP2151GTF-18, MP2151GTF-25, MP2151GTF-33 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP2151 – 1A SYNCHRONOUS STEP-DOWN SWITCHER WITH 25µA IQ ORDERING INFORMATION Part Number* MP2151GQFU MP2151GQFU-12 MP2151GQFU-15 MP2151GQFU-18 MP2151GQFU-25 MP2151GQFU-33 Package Top Marking See below See below See below See below See below See below UTQFN (1.2mmx1.6mm) VOUT Range Adjustable Fixed 1.2V Fixed 1.5V Fixed 1.8V Fixed 2.5V Fixed 3.3V * For Tape & Reel, add suffix –Z (e.g. MP2151GQFU–Z). TOP MARKING (MP2151GQFU) FX: Product code of MP2151GQFU LL: Lot number TOP MARKING (MP2151GQFU-12) GD: Product code of MP2151GQFU-12 LL: Lot number TOP MARKING (MP2151GQFU-15) GE: Product code of MP2151GQFU-15 LL: Lot number TOP MARKING (MP2151GQFU-18) GF: Product code of MP2151GQFU-18 LL: Lot number TOP MARKING (MP2151GQFU-25) GG: Product code of MP2151GQFU-25 LL: Lot number TOP MARKING (MP2151GQFU-33) GH: Product code of MP2151GQFU-33 LL: Lot number PACKAGE REFERENCE TOP VIEW TOP VIEW GND 1 6 OUT GND 1 6 OUT SW 2 5 FB SW 2 5 PG VIN 3 4 EN VIN 3 4 EN UTQFN (1.2mmx1.6mm) MP2151GQFU-Z MP2151 Rev. 1.0 1/7/2019 UTQFN (1.2mmx1.6mm) MP2151GQFU-12, MP2151GQFU-15 MP2151GQFU-18, MP2151GQFU-25 MP2151GQFU-33 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 MP2151 – 1A SYNCHRONOUS STEP-DOWN SWITCHER WITH 25µA IQ PIN FUNCTIONS Name Pin # SOT563 Description and UTQFN Adj Fixed version version 1 GND GND 2 SW SW 3 VIN VIN 4 EN EN FB - - PG OUT OUT 5 6 Power ground. Output switching node. SW is the drain of the internal, high-side, P-channel MOSFET. Connect an inductor to SW to complete the converter. Supply voltage. The MP2151 operates from a +2.5V to +5.5V unregulated input range. Decouple the capacitor to prevent large voltage spikes from appearing at the input. On/off control. Feedback. An external resistor divider from the output to GND tapped to FB sets the output voltage. Power good indicator. The output of PG is an open drain with an external pull-up resistor to VIN. Output sense. OUT is the voltage power rail and input sense pin for the output voltage. Connect the load to OUT. Use an output capacitor to decrease the output voltage ripple. θJA θJC ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance Supply voltage (VIN) .................................... 6.5V VSW ................................ -0.3V (-5V for