TPS565208
Synchronous Buck ConverterThe TPS565208 is a synchronous buck converter from Texas Instruments. View the full TPS565208 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official TPS565208 datasheet (PDF) — the source this page was extracted from.
TPS565208 Key Specifications
| Parameter | Value |
|---|---|
| Output Current | 5 A (maximum) |
| Soft Start Time | 1.0 ms |
| Package Dimensions | 1.60 mm × 2.90 mm |
| Input Voltage Range | 4.5 V to 17 V |
| Switching Frequency | 450 kHz to 550 kHz |
| Output Voltage Range | 0.76 V to 7 V |
| Low Side FET Resistance | 16 mΩ (typ) |
| Shutdown Supply Current | 0.8 μA (typ) to 5 μA (max) |
| High Side FET Resistance | 31 mΩ (typ) |
| Feedback Voltage Accuracy | 1% |
| Operating Junction Temperature Range | -40°C to 125°C |
| Operating Supply Current Non Switching | 590 μA (typ) to 780 μA (max) |
TPS565208 Overview
Part: TPS565208 — Texas Instruments
Type: Synchronous Step-Down Voltage Regulator
Description: 4.5 V to 17 V input, 5 A synchronous step-down converter with integrated FETs and D-CAP2™ mode control.
Operating Conditions:
- Supply voltage: 4.5 V to 17 V
- Operating temperature: -40 °C to 125 °C (junction temperature)
- Output voltage range: 0.76 V to 7 V
Absolute Maximum Ratings:
- Max supply voltage: 19 V (VIN, EN)
- Max junction/storage temperature: 150 °C
Key Specs:
- High-side switch on-resistance: 31 mΩ (TA = 25 °C, VBST - VSW = 5.5 V)
- Low-side switch on-resistance: 16 mΩ (TA = 25 °C)
- Current limit: 5.3 A min, 6.7 A typ, 8 A max
- Switching frequency: 500 kHz typ (VIN = 12 V, VOUT = 5 V, CCM mode)
- Feedback threshold voltage: 753 mV min, 760 mV typ, 767 mV max
- Non-switching supply current: 590 μA typ, 780 μA max (EN = 5 V, VFB = 1 V)
- Shutdown supply current: 0.8 μA typ, 5 μA max (EN = 0 V)
- Internal soft-start time: 1.0 ms typ
Features:
- Integrated 31-mΩ and 16-mΩ FETs
- D-CAP2™ mode control with fast transient response
- Cycle-by-cycle current limit with hiccup-mode overcurrent protection
- Non-latch undervoltage protection (UVP) and thermal shutdown (TSD)
- Startup from pre-biased output voltage
- Fixed 1.0-ms internal soft start
Applications:
- Digital TV power supply
- High-definition Blu-ray™ disc players
- Networking home terminal
- Digital set top box (STB)
- Surveillance
Package:
- 6-pin SOT (DDC) (1.60 mm × 2.90 mm)
TPS565208 Features
- 1 · 5-A Maximum Output Current
- Integrated 31-m Ω and 16-m Ω FETs
- D-CAP2™ Mode Control with Fast Transient Response
- Input Voltage Range: 4.5 V to 17 V
- Output Voltage Range: 0.76 V to 7 V
- Continuous Current Mode
- 500-kHz Switching Frequency
- Low Shutdown Current of Less than 1 μA
- 1% Feedback Voltage Accuracy
- Startup from Pre-biased Output Voltage
- Cycle-by-Cycle Current Limit
- Hiccup-mode Overcurrent Protection
- Non-Latch UVP and TSD Protections
- Fixed Soft Start: 1.0 ms
- Create a Custom Design Using the TPS565208 With the WEBENCH ® Power Designer
TPS565208 Applications
- Digital TV Power Supply
- High Definition Blu-ray™ Disc Players
- Networking Home Terminal
- Digital Set Top Box (STB)
- Surveillance
TPS565208 Pin Configuration
TPS565208 Electrical Characteristics
TJ = -40°C to 125°C, VIN = 12 V (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| SUPPLY CURRENT | SUPPLY CURRENT | SUPPLY CURRENT | SUPPLY CURRENT | SUPPLY CURRENT | SUPPLY CURRENT | SUPPLY CURRENT |
| I VIN | Operating - non-switching supply current | V IN current, EN = 5 V, V FB = 1 V | 590 | 780 | μA | |
| I VINSDN | Shutdown supply current | V IN current, EN = 0 V | 0.8 | 5 | μA | |
| LOGIC THRESHOLD | LOGIC THRESHOLD | LOGIC THRESHOLD | LOGIC THRESHOLD | LOGIC THRESHOLD | LOGIC THRESHOLD | LOGIC THRESHOLD |
| V ENH | EN high-level input voltage | 1.6 | V | |||
| V ENL | EN low-level input voltage | 0.8 | V | |||
| R EN | EN pin resistance to GND | V EN = 12 V | 120 | 245 | 400 | k Ω |
| V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE | V FB VOLTAGE AND DISCHARGE RESISTANCE |
| V FBTH | V FB threshold voltage | 753 | 760 | 767 | mV | |
| I VFB | V FB input current | T A = 25°C, V FB = 0.8 V | 0 | ±0.1 | μA | |
| MOSFET | MOSFET | MOSFET | MOSFET | MOSFET | MOSFET | MOSFET |
| R DS(on)h | High-side switch resistance | T A = 25°C, V BST - V SW = 5.5 V | 31 | m Ω | ||
| R DS(on)l | Low-side switch resistance | T A = 25°C | 16 | m Ω | ||
| CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT |
| I OCL | Current limit | 5.3 | 6.7 | 8 | A | |
| THERMAL SHUTDOWN | THERMAL SHUTDOWN | THERMAL SHUTDOWN | THERMAL SHUTDOWN | THERMAL SHUTDOWN | THERMAL SHUTDOWN | THERMAL SHUTDOWN |
| T | Thermal shutdown (1) | Shutdown temperature | 172 | °C | ||
| SDN | threshold | Hysteresis | 38 | |||
| ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL | ON-TIME TIMER CONTROL |
| t OFF(MIN) | Minimum off time | V FB = 0.61 V | 236 | 280 | ns | |
| SOFT START | SOFT START | SOFT START | SOFT START | SOFT START | SOFT START | SOFT START |
| t SS | Soft-start time | Internal soft-start time | 1.0 | ms | ||
| FREQUENCY | FREQUENCY | FREQUENCY | FREQUENCY | FREQUENCY | FREQUENCY | FREQUENCY |
| F SW | Switching frequency | V IN = 12 V, V OUT = 5 V, CCM mode | 500 | kHz | ||
| OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION |
| V UVP | Output UVP threshold | Hiccup detect (H > L) | 65 | % | ||
| T HICCUP_WAIT | Hiccup on time | 1.8 | ms | |||
| T HICCUP_RE | Hiccup time before restart | 14.9 | ms | |||
| UVLO | UVLO | UVLO Wake up VIN voltage | UVLO | UVLO 4.0 | UVLO 4.3 | UVLO |
| UVLO | UVLO threshold | Shutdown VIN voltage | 3.3 | 3.6 | V | |
| UVLO | Hysteresis VIN voltage (1) | 0.4 |
TPS565208 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Input voltage | VIN, EN | -0.3 | 19 | V |
| Input voltage | VBST | -0.3 | 25 | V |
| Input voltage | VBST (10 ns transient) | -0.3 | 27 | V |
| Input voltage | VBST (vs SW) | -0.3 | 6.5 | V |
| Input voltage | VFB | -0.3 | 6.5 | V |
| Input voltage | SW | -2 | 19 | V |
| Input voltage | SW (10 ns transient) | -3.5 | 21 | V |
| Operating junction temperature, T J | Operating junction temperature, T J | -40 | 150 | °C |
| Storage temperature, T stg | Storage temperature, T stg | -55 | 150 | °C |
TPS565208 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| V IN | Supply input voltage range | Supply input voltage range VBST VBST (10 ns transient) VBST (vs SW) | 4.5 -0.1 -0.1 -0.1 | 17 23 26 6.0 | V | |
| V I | Input voltage range | EN VFB SW SW (10 ns transient) | -0.1 -0.1 -1.8 -3.5 | 17 5.5 17 20 | V | |
| T J | Operating junction temperature | Operating junction temperature | -40 | 125 | °C |
TPS565208 Thermal Information
| THERMAL METRIC (1) | THERMAL METRIC (1) | TPS565208 DDC (SOT) 6 PINS | UNIT |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 95.9 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 35.6 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 16.4 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 1.4 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 16.4 | °C/W |
TPS565208 Typical Application
The device is a typical step-down DC-DC converter for converting a higher dc voltage to a lower dc voltage with a maximum available output current of 5 A. The following design procedure can be used to select component values for the TPS565208. Alternately, the WEBENCH ® software may be used to generate a complete design. The WEBENCH software uses an iterative design procedure and accesses a comprehensive database of components when generating a design. This section presents a simplified discussion of the design process.
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| TPS565208DDCR | Texas Instruments | SOT-23-6 THIN |
| TPS565208DDCR.A | Texas Instruments | SOT-23 |
| TPS565208DDCT | Texas Instruments | SOT-23-6 THIN |
| TPS565208DDCT.A | Texas Instruments | SOT-23-6 THIN |
Other Switching Regulators (Buck)
- TPS54302 – Texas Instruments, Synchronous Step-Down Converter
- MAX20730 – Analog Devices, Synchronous Switching Regulator
- TLV62568 – Texas Instruments, Synchronous Buck Converter
- LM2596 – Texas Instruments, Step-Down Voltage Regulator
- TPS562200 – Texas Instruments, Synchronous Buck Converter
- AP63203WU – Diodes Incorporated, Synchronous Buck Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
- LMR38010FDDAR – Texas Instruments, Synchronous Buck Converter
All Switching Regulators (Buck) datasheetsAll Texas Instruments datasheets (2,418)
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