TLF50211EL

The TLF50211EL is a high frequency PWM step-down DC/DC converter with an integrated PMOS power switch, packaged in a small PG-SSOP-14 with exposed pad. The wide input voltage range from 4.75 to 45 V makes the TLF50211EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive environmental conditions. The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors, resulting in a low, predictable output voltage ripple and in minimized consumption of board space. In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency. Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption. The voltage regulation loop provides an excellent line and load regulation, the stability of the loop is ensured by an internal compensation network. This compensation network combined with a current mode regulation control guarantees a highly effective line transient rejection. During start-up the integrated soft-start limits the in rush current peak and prevents from an output voltage overshoot. The TLF50211EL includes protection features such as a cycle-by-cycle current limitation, over-temperature shutdown and input under voltage lockout. The enable function, in shutdown mode with less than 2 μA current consumption, enables easy power management in battery-powered systems.

ParametricTLF50211EL
CommentsAsyncronous low-Iq-Buck; 5V/500mA; Iq<45µA; f=2,2MHz; 100%DC; EN
VQ (multiple)5V
IQ  max500.0mA
Iq45.0µA
Regulator TypeDC/DC->Buck
Tolerance2%
Watchdogno
ProtectY
Resetno
InhibitY
Operating Temperature  min  max-40.0°C  150.0°C
MountingSMT
Sales Product NameTLF50211EL
OPNTLF50211ELXUMA1
Product Statusactive and preferred
Package NamePG-SSOP-14
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size2500
Packing TypeTAPE & REEL
Moisture Level3
Summary of Features:
  • 500 mA step down voltage regulator
  • 5 V Output voltage
  • ± 2% output voltage tolerance
  • Low quiescent current (less than 45μA at nominal battery voltage)
  • Current mode PWM regulation
  • PFM mode for light load current
  • Input voltage range from 4.75V to 45V
  • Integrated power transistor
  • 2.2 MHz switching frequency
  • 100% Duty cycle
  • Synchronization input
  • Very low shutdown current consumption (<2 μA)
  • Integrated compensation
  • Integrated soft-start function
  • Input undervoltage lockout
  • Suited for automotive applications: Tj = -40 °C to +150 °C
  • Green Product (RoHS compliant)
  • AEC Qualified
  • Pin-compatible family approach
Benefits:
  • Low current consumption for permanently Vbat-connnected systems
  • High switching frequency reduces value and size of coil and output capacitor
  • Low drop-out operation due to 100% DC
  • No external components required for compensation and soft-start
  • One base design for multiple requirements by family approach
Target Applications:
  • Body
  • Cluster
  • Infotainment
  • General purpose replacement of LDO
Data Sheet
TitleSizeDateVersion
TLF50211EL Data Sheet,EN1.6 MB09 Jul 201301_00
Product Brief
TitleSizeDateVersion
TLF50211EL Product Brief699 KB19 Aug 2014
Additional Technical Information
TitleSizeDateVersion
TLF50211EL-TLF50201L Core Board407 KB19 Aug 201401_00
TLF50211EL-TLF50201L Demo Board447 KB19 Aug 201401_00
Product Selection Guide
TitleSizeDateVersion
Automotive Power Selection GuideEN10.6 MB19 Jan 201601_01
Material Content SheetInfo
TitleSizeDateVersion
MCDS_2013-08-28_22-17-25_MA001056014_PG-SSOP-14-3.pdf23 KB31 Oct 201301_00
PCB Design Data
TitleSizeDateVersion
PCB Footprints & Symbols - DCDC-Converter - Cadence - v1.0352 KB21 Oct 201301_00
Evaluation Boards
BoardFamilyDescriptionStatus
DEMOBOARD TLF50211ELDC/DC ConverterThis application board enables you to test the performance of the TLF50201/211EL step down converter. It is equipped with a TLF50211EL for 5.0V output voltage. The board shows a possible space efficient layout for the core; see also TLF50211COREBOARDTLF50211ELon request
TLF50211EL CORE-BOARDDC/DC ConverterThis design-In board enables you to replace a present supply-HW in your PCB by the TLF50281EL step down converter; possible with only 3 soldering connections! It is equipped with a TLF50221EL for 5.0V output voltage. The gerber file of the board-layout is avalable on request.TLF50211EL on PCBon request
Package Data
TitleSizeDateVersion
PG-SSOP-14-3 | TLF50211ELXUMA1EN502 KB11 Apr 201601_00
PCB Design Data
TitleSizeDateVersion
PCB Footprints & Symbols - DCDC-Converter - Cadence - v1.0352 KB21 Oct 201301_00
EN TLF50211EL
TLF50211EL Product Brief TLF50211EL
TLF50211EL-TLF50201L Core Board TLF50211EL
TLF50211EL-TLF50201L Demo Board TLF50211EL
EN TLE8203E
MCDS_2013-08-28_22-17-25_MA001056014_PG-SSOP-14-3.pdf TLF50211EL
EN TLF50211EL
PCB Footprints & Symbols - DCDC-Converter - Cadence - v1.0 TLE8386-2EL