My Inquiry
My Account
Texas Instruments TPS65283RGER
- Part No.:
- TPS65283RGER
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65283RGER.pdf
- Description:
- IC REG BUCK ADJ DL 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65283RGER from Texas Instruments is a dual synchronous buck converter with integrated power distribution switch, delivering up to 3.5 A on Buck1 and 2.5 A on Buck2 across 4.5–18 V input, featuring 0.6 V ±1% feedback reference, adjustable 200 kHz–2 MHz switching frequency, and 60 mΩ N-channel power switch for USB port power management in set-top boxes and home gateways.
For engineers reviewing the TPS65283RGER datasheet, TPS65283RGER pinout, TPS65283RGER application, or TPS65283RGER equivalent, this page delivers verified technical context, validated pin functions, confirmed efficiency curves at 1.2 V/5 V outputs, real-world current-limit accuracy (±10% at 1.25 A), and precise thermal shutdown thresholds (160 °C buck, 145 °C switch) - all critical for automotive infotainment and network equipment power design.
Technical Context
The TPS65283RGER implements constant-frequency peak-current-mode control for both buck channels, enabling simplified loop compensation and optimized transient response; switching clocks are 180° out-of-phase to reduce input ripple and capacitor size. It integrates high-side and low-side MOSFETs (RDS(on) = 100/65 mΩ for Buck1, 140/95 mΩ for Buck2) and uses internal V7V LDO (6.3 V typical) to bias gate drivers.
Buck regulation employs 0.6 V ±1% reference with hysteresis-based PGOOD monitoring (92.5–107.5% UV/OV thresholds); the power distribution switch features programmable current limiting via RSET (9.1–80.6 kΩ), auto-recovery overcurrent protection, reverse-voltage blocking, and dedicated nFAULT open-drain output asserted under fault conditions longer than 6–10 ms deglitch window.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports wide-range industrial and automotive supply rails without external pre-regulation. |
| Buck1 Output Current | Up to 3.5 A continuous - sufficient for core logic or SoC VDD in digital TV and DSL modems. |
| Buck2 Output Current | Up to 2.5 A continuous - powers memory, interface ICs, or auxiliary rails in home gateway systems. |
| Feedback Reference | 0.6 V ±1% - enables precise low-voltage regulation (e.g., 1.2 V @ 2% tolerance) with minimal resistor divider error. |
| Switching Frequency | 200 kHz to 2 MHz - adjustable via ROSC resistor to balance EMI, efficiency, and inductor size. |
| Power Switch RDS(on) | 60 mΩ - ensures <150 mW conduction loss at 2.5 A, suitable for USB 5 V distribution with tight thermal budget. |
| Current Limit Accuracy | ±10% at 1.25 A - guarantees repeatable short-circuit protection across temperature and unit variance. |
| Thermal Shutdown | 160 °C (buck), 145 °C (switch) - protects silicon integrity during sustained overload or poor PCB thermal design. |
Pinout & Package
TPS65283RGER is housed in a thermally enhanced 24-pin VQFN (RGE) package, 4.0 mm × 4.0 mm, with exposed thermal pad soldered to PGND for optimal junction-to-board thermal resistance (RθJB = 14.5 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 (Pin 2) | Buck1 enable input | High-level active (≥1.26 V); internal pullup allows auto-start; RC delay enables sequencing. |
| FB1 (Pin 17) | Buck1 feedback sensing | Connects to resistor divider; regulates output to 0.6 V reference - sets VOUT1 = 0.6 × (1 + R1/R2). |
| LX1 (Pin 20) | Buck1 switching node | Drives external inductor; swings from ~–0.3 V to VIN1; requires low-ESR ceramic bootstrap cap to BST1. |
| BST1 (Pin 19) | Buck1 high-side gate drive supply | Capacitor (47 nF) between BST1–LX1 generates floating bias for internal HS MOSFET driver. |
| PGOOD1 (Pin 24) | Buck1 power-good indicator | Open-drain output; pulled low if VOUT1 deviates >7.5% OV or >5% UV for ≥1 ms (deglitch). |
| RSET (Pin 15) | Power switch current limit programming | Resistor sets IOS (e.g., 20 kΩ → 1.25 A ±10%); defines trip point for auto-recovery overcurrent protection. |
| nFAULT (Pin 6) | Fault status output | Active-low open-drain; asserts when power switch overcurrent or reverse-voltage persists >6–10 ms. |
| V7V (Pin 23) | Internal LDO output | 6.3 V regulated supply for gate drivers; decoupled with ≥1 µF ceramic; common AGND/PGND tie point. |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronous buck architecture | Integrated HS/LS MOSFETs eliminate external FETs and drivers - reduces BOM count and layout area by >30% vs discrete solutions. |
| 180° out-of-phase clocking | Reduces RMS input current ripple by ~30%, allowing smaller input capacitors and lower EMI filter cost. |
| Programmable current-limit switch | 60 mΩ NMOS with ±10% accuracy at 1.25 A enables reliable USB port protection without external sense resistors. |
| Internal 2.4-ms soft-start | Prevents inrush current into pre-biased loads - eliminates need for external timing components in most applications. |
| Hiccup-mode overload protection | Shuts down for 64 ms after 4-ms overcurrent, then auto-restarts - prevents thermal runaway during sustained shorts. |
| Reverse-voltage blocking | Prevents backfeed from SW_OUT to SW_IN during hot-swap or fault - protects upstream supplies in multi-rail systems. |
Applications
| USB Power Delivery Port | Set-Top Box Core Rail |
|---|---|
Use Scenario: Providing regulated 5 V power to USB peripherals with overcurrent protection in consumer media devices. IC Role / Device Role / Timing Role: Dual-buck controller manages main SoC rail (1.2 V) while integrated power switch delivers and protects 5 V USB output. Use Value: Eliminates need for separate USB load switch IC; ±10% current limit accuracy ensures consistent compliance with USB 2.0/3.0 specs. |
Use Scenario: Generating stable 1.2 V core voltage for ARM-based media processors in cable/satellite receivers. IC Role / Device Role / Timing Role: Buck1 operates as primary processor supply with 3.5 A capability and 0.6 V reference precision. Use Value: 100% duty-cycle capability and 80 ns minimum on-time support low-VIN operation during brownout conditions. |
| Digital TV Memory Supply | Home Gateway Network Processor |
Use Scenario: Delivering 5 V to DDR3/DDR4 memory subsystems with fast transient response and low noise. IC Role / Device Role / Timing Role: Buck2 supplies memory I/O rail; 180° phase shift minimizes input ripple affecting analog tuner sections. Use Value: 2.5 A output with 95 mΩ low-side RDS(on) achieves >92% efficiency at 2 A, reducing thermal load on compact PCBs. |
Use Scenario: Powering dual-core network processors and PHYs in Wi-Fi 6 access points with independent enable control. IC Role / Device Role / Timing Role: EN1/EN2 pins allow staggered startup of CPU and peripheral rails; PGOOD1/PGOOD2 confirm sequencing. Use Value: Independent fault reporting (nFAULT, PGOOD1, PGOOD2) enables firmware-level diagnostics without additional monitoring circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck with power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65283-1RGER | Same pinout and specs, but uses pulse-skipping mode (PSM) at light load instead of continuous conduction mode (CCM). | Better light-load efficiency in always-on gateways; slightly higher output ripple vs CCM operation of TPS65283RGER. | Select TPS65283-1RGER when standby power <100 µA is critical; choose TPS65283RGER for lowest ripple in active-duty applications. |
| TPS65286RGER | Higher 4-A/3-A output capability, 2.7-V to 18-V input, no integrated power switch - requires external load switch for USB protection. | Supports higher-power SoCs; lacks monolithic USB switch, increasing BOM and layout complexity for port protection. | Choose TPS65286RGER only when >3.5 A Buck1 current is required; retain TPS65283RGER for integrated protection and space-constrained designs. |
Compared with TPS65283-1RGER, the TPS65283RGER provides tighter output voltage regulation under dynamic load due to CCM operation, while TPS65286RGER trades away integrated switch functionality for higher current headroom - making TPS65283RGER optimal for cost-sensitive, space-limited USB-powered consumer electronics requiring single-chip power and protection.
Availability
TPS65283RGER is available at Aetrix Electronics and suitable for USB ports and hubs, digital TV, and home gateway networks requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TPS65283RGER 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 global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion and system power integration.
The TPS65283RGER belongs to TI's PMIC portfolio designed for compact, high-density consumer and networking equipment, where integrating dual buck regulation with precision power-switch protection reduces solution size and improves reliability.
FAQ
What is the recommended input capacitor value for TPS65283RGER?
TI specifies a minimum 10 µF ceramic capacitor per input rail (VIN1 and VIN2), placed as close as possible to their respective pins. For robust performance across 4.5–18 V input range and 3.5 A/2.5 A loads, a parallel combination of 10 µF X7R + 1 µF X5R is recommended to ensure low impedance at high frequencies and handle ripple current without derating.
Does TPS65283RGER support synchronization to an external clock?
Yes, the TPS65283RGER supports external clock synchronization via the ROSC/SYNC pin (Pin 4). When an external clock signal (200–2000 kHz, ≥2 VHI, ≤0.4 VLO) is applied, the device automatically synchronizes its internal switching frequency to match, reducing beat frequencies and EMI in multi-rail systems.
How does the TPS65283RGER handle pre-biased outputs during startup?
The TPS65283RGER implements monotonic start-up into pre-biased loads: the internal soft-start circuit ramps the COMP pin voltage while monitoring FB, preventing reverse current flow. This behavior is confirmed in the datasheet's "Safe Monotonic Start-Up" section and requires no external components to function correctly.
What is the purpose of the V7V pin on the TPS65283RGER?
The V7V pin (Pin 23) is the output of an internal LDO regulated to 6.3 V (typical), which powers the gate drivers for both buck converters and the power distribution switch. It must be decoupled with ≥1 µF ceramic capacitor to PGND, and AGND/PGND should connect at the capacitor's negative terminal to minimize noise coupling into analog circuits.
Can the TPS65283RGER operate with only one buck channel enabled?
Yes, the TPS65283RGER supports independent channel control: EN1 (Pin 2) and EN2 (Pin 3) can be driven separately. Disabling one channel (e.g., pulling EN2 low) halts switching on Buck2 while Buck1 remains fully operational, preserving efficiency and thermal margin in partial-load configurations like standby modes.
TPS65283RGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 9V
- Current - Output:
- 3.5A, 2.5A
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS65283RGER FAQ
1.How can I place an order for TPS65283RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65283RGER 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 TPS65283RGER reliable?
The price and inventory of TPS65283RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65283RGER is usually 5 days.
3.What payment methods are accepted for TPS65283RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65283RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65283RGER?
TPS65283RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65283RGER 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 TPS65283RGER?
For technical support, including TPS65283RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65283RGER requirements.
6.How does Aetrix verify that TPS65283RGER is sourced from the original manufacturer or authorized distributors?
All TPS65283RGER 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 TPS65283RGER meets industry standards.
7.What is the process for return or replacement of TPS65283RGER?
All TPS65283RGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS65283RGER, 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 TPS65283RGER part is unused and in its original packaging.
Return procedure for TPS65283RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65283RGER Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
