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Texas Instruments TLV62565DBVT
- Part No.:
- TLV62565DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV62565DBVT.pdf
- Description:
- IC REG BUCK ADJ 1.5A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,304
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Product details
Overview
TLV62565DBVT from Texas Instruments is a synchronous step-down DC-DC converter optimized for portable power rails, delivering up to 1.5 A output current with adaptive on-time valley current mode control, 1.5-MHz switching frequency, and 50-µA quiescent current in Power Save Mode. It operates from 2.7 V to 5.5 V input and supports adjustable output voltages down to 0.6 V via external resistor divider, commonly used in battery-powered tablets and DSL modems.
For engineers reviewing the TLV62565DBVT datasheet, TLV62565DBVT pinout, TLV62565DBVT application, or TLV62565DBVT equivalent, key selection considerations include its SOT-23-5 package footprint, 95% maximum duty cycle, thermal shutdown protection, soft-start timing (250 µs), and compatibility with low-ESR ceramic output capacitors (e.g., 10 µF).
Technical Context
The TLV62565DBVT implements adaptive on-time valley current mode control, dynamically adjusting high-side MOSFET on-time based on VIN/VOUT ratio to maintain ~1.5 MHz switching across load and input variations. Its internal loop compensation eliminates need for external compensation components.
It transitions automatically between PWM mode (medium/heavy load) and PFM Power Save Mode (light load), where FB voltage rises to ~0.605 V to reduce switching frequency and sustain >85% efficiency at 10 mA load. Valley current sensing enables fast transient response and inherent cycle-by-cycle current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and 3.3 V/5 V rail inputs without external LDO pre-regulation. |
| Output Current | Up to 1.5 A - sufficient for powering core logic, memory, or I/O rails in portable SoC applications. |
| Switching Frequency | 1.5 MHz (typ) - enables use of small 2.2 µH inductors and 4.7–10 µF ceramic capacitors for compact PCB layout. |
| Quiescent Current | 50 µA (typ) - minimizes standby power loss in always-on subsystems like RTC or sensor interfaces. |
| Feedback Voltage | 0.600 V ±2% - sets precise output regulation point; allows programmable outputs from 0.6 V to DMAX·VIN using R1/R2 divider. |
| Current Limit | Low-side valley limit: 1.7 A (typ); high-side peak limit: 2.0 A (typ) - provides robust short-circuit and overload protection without external sense resistors. |
| Soft Start Time | 250 µs (typ) - controls inrush current during power-up, preventing battery voltage sag and avoiding false UVLO triggers. |
| Thermal Shutdown | 150 °C (typ) with 20 °C hysteresis - protects against sustained overloads or poor heatsinking in sealed enclosures. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 2.80 mm body size, surface-mount, thermally enhanced bottom-pad variant not present - standard DBV has no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Power input | Accepts 2.7–5.5 V supply; requires local 4.7 µF ceramic decoupling placed adjacent to pin for EMI suppression and transient response. |
| GND (Pin 2) | Power ground | Primary return path for high-frequency switch current; must be connected to low-impedance ground plane under IC body. |
| SW (Pin 3) | Switch node | Connects to inductor and diode-free synchronous rectifier; carries high dv/dt square wave - critical for minimizing parasitic ringing and EMI. |
| FB (Pin 5) | Feedback input | Senses output voltage via resistor divider; high-impedance (10–100 nA bias) - sensitive to noise; requires short trace and guard ring. |
| EN (Pin 1) | Enable input | Active-high logic control (VIH ≥1.2 V); pulls device into <1 µA shutdown when low; must not float - tie to VIN or microcontroller GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive On-Time Control | Maintains stable ~1.5 MHz operation across input/output/load variations without external frequency programming or compensation. |
| Power Save Mode (PFM) | Reduces quiescent current to 50 µA and extends battery runtime in idle states while preserving regulation accuracy within ±1.5%. |
| Integrated High/Low-Side MOSFETs | Eliminates external power switches; RDS(on) = 173 mΩ (HS) / 105 mΩ (LS) at 3.6 V - enables >92% peak efficiency at 1 A load. |
| Internal Soft Start | 250 µs monotonic ramp prevents output overshoot and inrush current spikes - compatible with pre-biased output capacitors. |
| Valley Current Limit Protection | Detects inductor current minimum to trigger cycle termination - provides accurate, temperature-stable current limiting without sensing resistors. |
| UVLO with Hysteresis | Shuts down below 2.2 V (falling) and re-enables at 2.4 V - avoids oscillatory startup near battery depletion thresholds. |
Applications
| Portable Tablets | DSL Modems |
|---|---|
Use Scenario: Powering ARM-based application processors and LPDDR memory in 7–10 inch tablets with single-cell Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator generating 1.2 V core voltage and 3.3 V I/O rail from battery input. Use Value: 95% peak efficiency at 1.2 V/1.2 A reduces thermal load on thin form factor; 50 µA quiescent current extends standby time beyond 14 days. | Use Scenario: Supplying stable 3.3 V and 1.8 V rails to ADSL2+ PHY, DSP, and Ethernet MAC in residential broadband gateways. IC Role / Device Role / Timing Role: Secondary DC-DC converter stepping down 5 V system rail to low-noise analog and digital supplies. Use Value: Excellent load transient response (<50 µs recovery from 0.1→1.0 A step) maintains signal integrity during burst data transmission. |
| Hard Disk Drive Controllers | Set-Top Boxes |
Use Scenario: Generating 1.8 V logic supply for SATA controller ASICs in external 2.5-inch HDD enclosures powered via USB 5 V. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load regulator replacing linear regulators to minimize heat in enclosed metal chassis. Use Value: SOT-23-5 footprint saves board space vs. larger SO-8 alternatives; 95% max duty cycle supports 1.8 V output even at 2.7 V input (USB low-voltage condition). | Use Scenario: Providing regulated 1.2 V core and 3.3 V peripheral voltage for ARM Cortex-A series SoCs in IPTV and streaming media boxes. IC Role / Device Role / Timing Role: Main system power converter operating from 5 V wall adapter, supporting dynamic voltage scaling during video decode. Use Value: Adaptive on-time control ensures consistent 1.5 MHz switching during CPU load transients - simplifies EMI filter design and meets CISPR-32 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.8 V output; 1.8–6.5 V input; 300 mA max output; 3-MHz switching; 19-µA IQ | Not adjustable; lower current rating; higher frequency enables smaller passives but increases switching losses above 1 A | Select when fixed 1.8 V output and ultra-low IQ are prioritized over adjustability and 1.5 A capability. |
| MP2143GJ-Z | 2.5–6 V input; 1.5 A output; 1.4–2.2 MHz adjustable frequency; 30 µA IQ; no PG or soft-start | Lacks integrated soft-start and power-good signaling; requires external frequency resistor; slightly wider input range | Choose when board space allows external frequency setting and soft-start is implemented externally via enable sequencing. |
Compared with TLV62565DBVT, TPS62231DRYR offers lower quiescent current but sacrifices output adjustability and current capability, while MP2143GJ-Z provides frequency flexibility at the cost of missing key system features like soft-start and tighter feedback tolerance - TLV62565DBVT balances integration, precision, and ease of use for mid-power portable designs.
Availability
TLV62565DBVT is available at Aetrix Electronics and suitable for portable tablets, DSL modems, and set-top boxes requiring stable component supply, long-term manufacturability, and automotive-grade reliability screening (AEC-Q200 not applicable; industrial temp grade –40°C to 85°C).
Supply support for TLV62565DBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a U.S.-based semiconductor company specializing in analog, embedded processing, and power management ICs, with global manufacturing and distribution infrastructure.
The TLV62565DBVT belongs to TI's TLV6256x family of high-efficiency synchronous buck converters designed specifically for space-constrained, battery-powered applications where low quiescent current, fast transient response, and minimal external component count are critical.
FAQ
What is the maximum output current supported by the TLV62565DBVT?
The TLV62565DBVT supports up to 1.5 A of continuous output current under recommended operating conditions (TA ≤ 85°C, proper PCB layout, and adequate thermal relief). Peak current capability is limited by valley current sensing (1.7 A typ) and high-side peak current limit (2.0 A typ), making TLV62565DBVT suitable for powering processor cores, memory, and interface circuits in portable electronics without external current-sense components.
Does the TLV62565DBVT require external compensation components?
No, the TLV62565DBVT integrates full internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and improves consistency across production units. Stability is ensured with recommended LC combinations (e.g., 2.2 µH inductor + 10 µF output capacitor), as validated in TI's SLVSBC1D datasheet Figure 8 and Table 2.
Can the TLV62565DBVT operate with a 2.7 V input and 1.8 V output?
Yes, the TLV62565DBVT can operate with a 2.7 V input and 1.8 V output. Its 95% maximum duty cycle exceeds the required ~67% duty (1.8 V / 2.7 V), ensuring regulation is maintained. Efficiency remains >87% at 1 A load per Figure C001 in the datasheet, and UVLO (2.2 V falling threshold) provides safe startup margin. No additional circuitry is needed for this configuration.
How does Power Save Mode affect regulation accuracy in the TLV62565DBVT?
In Power Save Mode, the TLV62565DBVT raises the FB reference voltage from 0.600 V to ~0.605 V (0.9% higher), resulting in a corresponding ~0.9% increase in output voltage. For a 1.8 V nominal output, this yields ~1.816 V in PFM mode. This intentional offset maintains light-load efficiency without compromising stability, and regulation returns to ±1.5% of nominal once PWM mode resumes above ~50 mA load.
Is the TLV62565DBVT pin-compatible with the TLV62566DBVT?
No, the TLV62565DBVT is not pin-compatible with the TLV62566DBVT. While both share identical SOT-23-5 (DBV) packaging and four common pins (VIN, GND, SW, FB), Pin 1 is EN on TLV62565DBVT but unconnected (NC) on TLV62566DBVT, and Pin 1 on TLV62566DBVT is PG (open-drain Power Good), which TLV62565DBVT lacks. Board redesign is required to swap between them.
TLV62565DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.23V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV62565DBVT FAQ
1.How can I place an order for TLV62565DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV62565DBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLV62565DBVT reliable?
The price and inventory of TLV62565DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV62565DBVT is usually 5 days.
3.What payment methods are accepted for TLV62565DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV62565DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV62565DBVT?
TLV62565DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV62565DBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLV62565DBVT?
For technical support, including TLV62565DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV62565DBVT requirements.
6.How does Aetrix verify that TLV62565DBVT is sourced from the original manufacturer or authorized distributors?
All TLV62565DBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLV62565DBVT meets industry standards.
7.What is the process for return or replacement of TLV62565DBVT?
All TLV62565DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV62565DBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLV62565DBVT part is unused and in its original packaging.
Return procedure for TLV62565DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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