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.
| Parametric | TLF50211EL |
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| Comments | Asyncronous low-Iq-Buck; 5V/500mA; Iq<45µA; f=2,2MHz; 100%DC; EN |
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| VQ (multiple) | 5V |
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| IQ
max | 500.0mA |
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| Iq | 45.0µA |
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| Regulator Type | DC/DC->Buck |
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| Tolerance | 2% |
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| Watchdog | no |
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| Protect | Y |
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| Reset | no |
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| Inhibit | Y |
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| Operating Temperature
min
max | -40.0°C
150.0°C |
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| Mounting | SMT |
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| Sales Product Name | TLF50211EL |
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| OPN | TLF50211ELXUMA1 |
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| Product Status | active and preferred |
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| Package Name | PG-SSOP-14 |
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| Completely lead free | yes |
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| Halogen free | yes |
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| RoHS compliant | yes |
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| Packing Size | 2500 |
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| Packing Type | TAPE & REEL |
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| Moisture Level | 3 |
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| 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
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Data Sheet
Product Brief
Additional Technical Information
Product Selection Guide
Material Content SheetInfo
PCB Design Data
Evaluation Boards
| Board | Family | Description | Status |
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| DEMOBOARD TLF50211EL | DC/DC Converter | This 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 TLF50211COREBOARDTLF50211EL | on request |
| TLF50211EL CORE-BOARD | DC/DC Converter | This 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 PCB | on request |
Package Data
PCB Design Data
