UD05201

UD05201 UTC | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 5

Technical content

UNISONIC TECHNOLOGIES CO., LTD UD05201 Advance CMOS IC www.unisonic.com.tw 1 of 5 Copyright © 2020 Unisonic Technologies Co., Ltd QW-R115-003.c 1.2MHZ, 2A SYNCHRONOUS STEP-DOWN CONVERTER  DESCRIPTION The UTC UD05201 is a 1.2MHz constant frequency current mode PWM step -down converter. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium -ion batteries while still achieving over 90% efficiency during peak load conditions. The UTC UD05201 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. The UTC UD05201 can supply up to 2A output load current from a 2.6V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation. The UTC UD05201 is available in adjustable (0.6V to VIN) output voltage. SOP-8 HSOP-8  FEATURES * 2.6V~5.5V Input Voltage Range * Output Voltages from 0.6V to VIN * High Efficiency: Up to 96% * 1.2MHz Constant Frequency Operation * Up to 2A Output Current * No Schottky Diode Required * Low RDS(ON) Internal Switches: 0.15Ω * Current Mode Operation for Excellent Line and Load Transient Response * Current limit, Enable function * Short Circuit Protect (SCP) * Build-in Soft Start function * ≤ 1µA Shutdown Current  ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free UD05201L-S08-A-R UD05201G-S08-A-R SOP-8 Tape Reel UD05201L-S08-B-R UD05201G-S08-B-R SOP-8 Tape Reel UD05201L-S08-C-R UD05201G-S08-C-R SOP-8 Tape Reel UD05201L-SH2-R UD05201G-SH2-R HSOP-8 Tape Reel UD05201G-S08-A-R (1)Packing Type (2)Pin Code (1) R: Tape Reel (2) Refer to PIN CONFIGURATION (3) S08: SOP-8(3)Package Type (4)Green Package (4) G: Halogen Free and Lead Free, L: Lead Free

UNISONIC TECHNOLOGIES CO., LTD 2 of 5 www.unisonic.com.tw QW-R115-003.c  MARKING UTC UD05201 2 3 41 5678 Date Code Lot Code L: Lead Free G: Halogen Free  PIN CONFIGURATION EN FB PVIN SVIN SGND SGND LX PGND UTC UD05201-A SOP-8 SVIN SGND FB SGND EN PGND LX PVIN UTC UD05201-B SOP-8 SVIN SGND FB NC EN PGND LX PVIN UTC UD05201-B HSOP-8 SGND SVIN EN NC SGND FB PGND LX PVIN UTC UD05201-C SOP-8  PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION SOP-8 HSOP-8 A B C 1 4 5 4 EN Enable pin H: normal operation L: Shutdown 2 8 8 8 PVIN Power Supply Input Pin 3 1 1 1 SVIN Signal Supply Input Pin 4, 6 3, 5 3 5 SGND Signal Ground Pin 5 2 4 2 FB Output Feedback pin 7 7 7 7 LX Switch output pin. Connect external inductor here. Minimize trace area at this pin to reduce EMI. 8 6 6 6 PGND Power Ground Pin - - 2 3 NC No connect pin

UNISONIC TECHNOLOGIES CO., LTD 3 of 5 www.unisonic.com.tw QW-R115-003.c  BLOCK DIAGRAM SVIN FB SGND PVIN LX PGND EN REF Soft-Star ICOMP Over-Temperature and Short-Circuit Protection SLOPE COMPOSC Isense AMP Izero COMP PWM LOGIC NON- OVERLAP CONTROL Enable Logic 0.6V SET RESET

UNISONIC TECHNOLOGIES CO., LTD 4 of 5 www.unisonic.com.tw QW-R115-003.c  ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT PVIN, SVIN Pin Voltage VIN VSS -0.3 to VSS+ 6 V Feedback Pin Voltage VFB VSS -0.3 to VIN+ 0.3 V EN Pin Voltage VEN VSS -0.3 to VIN+ 0.3 V Switch Pin Voltage VLX VSS -0.3 to VIN+ 0.3 V Power Dissipation PD 700 mW Junction Temperature TJ +125 °C Operating Temperature Range TOPR -40 ~ +85 °C Storage Temperature Range TSTG -40 ~ +150 °C Note: Absolute maxi mum ratings are those values beyond which the devic e could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.  THERMAL DATA PARAMETER SYMBOL RATING UNIT Junction to Ambient θJA 143 °C/W Junction to Case θJC 45 °C/W Note: θJA is measured with the PCB copper area of approximately 1 in 2(Multi-layer). That need connect to LX pin or Exposed pad of the UTC UD05201.  ELECTRICAL CHARACTERISTICS (VIN=VEN=3.6V, TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage Range VIN 2.6 5.5 V Feedback Voltage VFB TA=+25°C 0.5880 0.6000 0.6120 V TA=0°C ≤TA≤85°C 0.5865 0.6000 0.6135 V TA=-40°C ≤TA ≤85°C 0.5820 0.6000 0.6180 V Feedback Bias Current IFB VFB=0.65V ±30 nA Quiescent Current ICCQ VFB=0.8V 250 400 uA Shutdown Supply Current ISD VEN=0V 0.1 1 uA Switching Current Limit ILIMIT 2.2 2.5 A Line Regulation △ VOUT / VOUT VIN=2.6V~5.5V 0.04 0.4 %/V Load Regulation △ VOUT / VOUT IOUT= 0.01~2A 0.5 1 % Oscillation Frequency FOSC LX pin 1 1.2 1.4 MHz RDS(ON) of P-CH MOSFET RDSON VFB=0V,IOUT=1A 0.15 0.25 Ω RDS(ON) of N-CH MOSFET RDSON Guaranteed by design 0.11 0.20 Ω EN Pin Logic Input Threshold Voltage VENL 0.4 V VENH 1.5 EN Pin Input Current IEN ±0.1 ±1 uA Efficiency EFFI VIN=5V, VOUT=3.3V,IOUT=1.5A 91 % Thermal Shutdown TSD 140 °C Thermal Shutdown Hysteresis TSH 30 °C

UNISONIC TECHNOLOGIES CO., LTD 5 of 5 www.unisonic.com.tw QW-R115-003.c  FUNCTION DESCRIPTIONS Operation UTC UD05201A/B/C is a monolithic switching mode Ste p-Down DC-DC converter. It utilizes internal MOSFETs to achieve high efficiency and can generate very low output voltage by using internal reference at 0.6V. It operates at a fixed switching frequency, and uses the slope compensated current mode architectu re. This Step -Down DC -DC Converter supplies 2000mA output current at input voltage range from 2.6V to 5.5V. Current Mode PWM Control Slope compensated current mode PWM control provides stable switching and cycle-by-cycle current limit for excellent load a nd line responses and protection of the internal main switch (P -CH MOSFET) and synchronous rectifier (N-CH MOSFET). During normal operation, the internal P -CH MOSFET is turned on for a certain time to ramp the inductor current at each rising edge of the internal oscillator, and switched off when the peak inductor current is above the error voltage. The current comparator, I COMP limits the peak inductor current. When the main switch is off, the synchronous rectifier w ill be turned on immediately and stay on until either the inductor current starts to reverse, as indicated by the current reversal comparator, IZERO, or the beginning of the next clock cycle.  TYPICAL APPLICATION CIRCUIT UTC UD05201 PVIN SVIN EN PGND SGND FB LX VIN=2.6~5.5V 10R 3.3uH VOUT=1.8V 22uF 15pFR2 600K 300K 100nF 22uF VOUT=0.6 × (1+R2/R3) R2=510K~820K UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury . Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner . UTC reserves the right to make changes to information published in this document , including without limitation specifications and product descriptions , at any time and without notice . This document supersedes and replaces all information supplied prior to the publication hereof.