My Inquiry
My Account
Texas Instruments TPS65233RTER
- Part No.:
- TPS65233RTER
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS65233RTER.pdf
- Description:
- IC REG CONV SATELLIT 1OUT 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,368
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65233RTER from Texas Instruments is a monolithic LNB voltage regulator IC integrating a 528-kHz boost converter, low-dropout linear regulator, and 22-kHz tone generator for satellite receiver systems. It delivers regulated 13.4-V/18.6-V output with ±0.7% load regulation, 650-mA programmable current limit (±10%), and DiSEqC 1.x compliance. Used in set-top box and TV satellite receivers to power LNB down-converters and transmit control tones over coaxial cable.
For engineers reviewing the TPS65233RTER datasheet, TPS65233RTER pinout, TPS65233RTER application, or TPS65233RTER equivalent, this page provides verified technical context, I²C-configurable operation, thermal fault diagnostics, soft-start timing control, and LNB-specific protection features - all critical for satellite front-end power design.
Technical Context
The TPS65233RTER implements a fixed-frequency (528 kHz) boost converter with 120-mΩ internal MOSFET, feeding a low-dropout linear regulator (0.8-V dropout at 500 mA) that superimposes clean 22-kHz tone onto VLNB. Its I²C interface supports 400-kHz clock rate and dual slave addresses (0x60H/0x61H) selected via EN/ADDR pin.
Four independent 22-kHz tone generation modes are supported: external 22-kHz input on EXTM, internal tone gated by EXTM logic, internal tone gated by TGATE, or external tone gated by TGATE. Slew rate of 13 V ↔ 18 V transitions is controlled by TCAP capacitor (e.g., 5.6 nF yields 0.33-ms rise/fall time), while ISEL resistor sets output current limit with ±10% accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 13.4 V or 18.6 V selectable via VCTRL pin; tight DC regulation (±0.3 V) enables reliable LNB biasing. |
| Output current limit | Programmable 580–720 mA via ISEL resistor; protects against LNB short circuits without external components. |
| 22-kHz tone amplitude | 680 mVPP into 100-nF load; push-pull output maintains signal integrity even at zero loading. |
| Boost switching frequency | 528 kHz typical; enables compact 22-µH inductor and reduces EMI filtering burden. |
| I²C interface speed | Up to 400 kHz; supports fast configuration of tone enable, voltage selection, and fault status readback. |
| Thermal shutdown threshold | 160°C trip point with 20°C hysteresis; prevents permanent damage during sustained overload or poor heatsinking. |
| UVLO threshold | 4.25 V rising edge (4.1 V falling); ensures stable startup across 4.5–20 V input range. |
Pinout & Package
TPS65233RTER is housed in a thermally enhanced 16-pin QFN package (3 mm × 3 mm, RTE), with exposed thermal pad requiring PCB soldering and thermal vias for optimal junction-to-board thermal resistance (θJB = 15°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Boost switch node | Connects to inductor; carries high di/dt switching current; requires low-inductance layout. |
| VIN | Main input supply | Accepts 4.5–20 V; powers internal linear regulator and charge pump; UVLO active below 4.25 V. |
| VCC | Bias supply rail | 6.5-V internal rail; requires 1-µF ceramic decoupling to AGND; tied to VIN when input is 5 V. |
| AGND | Analog ground reference | Reference for TCAP, ISEL, and analog blocks; must be connected to PGND and thermal pad. |
| TCAP | Slew rate control | Capacitor here sets 13 V ↔ 18 V transition time (e.g., 5.6 nF → 0.33 ms); defines linear regulator reference ramp. |
| ISEL | Current limit programming | Resistor to AGND sets output current limit (e.g., 200 kΩ → 650 mA); ±10% accuracy maintained. |
| EN/ADDR | Enable & I²C address select | Pull low to disable output (VLNB pulled to GND); sets I²C address to 0x60H (low) or 0x61H (high). |
| FAULT | Open-drain fault indicator | Goes low on OCP, OTP, or UVLO; requires external pull-up; cleared only by EN recycle or I²C register read. |
| SCL/VADJ | I²C clock / voltage adj | I²C clock input; if unused, tie low for 13 V/18 V output or high for 13.4 V/18.6 V output. |
| SDA | I²C bidirectional data | Open-drain I²C data line; supports standard/fast mode; acknowledges writes with pulldown. |
| VCTRL | 13 V/18 V selection | Logic high → 18.6 V output; logic low → 13.4 V output; controls LNB polarization switching. |
| EXTM | External tone modulation | Accepts 22-kHz square wave or logic-level signal to gate internal tone generator or pass external tone. |
| VLNB | LNB power output | Regulated 13.4 V/18.6 V output; superimposes 22-kHz tone; includes cable disconnect diagnostic. |
| VCP | Charge pump output | ~6.25 V gate drive for linear regulator NMOS; requires capacitor to BOOST pin. |
| BOOST | Boost output / LDO input | Switching output feeds linear regulator; tracks VLNB within 0.8 V to minimize dropout loss. |
| PGND | Power ground return | High-current return path for boost converter; must be low-impedance and joined to AGND at single point. |
Key Features
| Feature | Design Value |
|---|---|
| DiSEqC 1.x compliance | Fully satisfies satellite receiver command protocol requirements including tone burst timing, voltage transitions, and fault reporting. |
| Dual-mode 22-kHz generation | Supports both external tone injection and internal tone generation with four configurable gating options for system flexibility. |
| LNB short-circuit dynamic protection | Hiccup-mode OCP (4-ms on, 128-ms off) prevents thermal runaway during sustained shorts without latch-off. |
| I²C-configurable diagnostics | Real-time readback of output voltage, input UVLO, tone status, and fault flags (OCP/OTP) via dedicated registers. |
| Adjustable soft-start and slew rate | TCAP capacitor sets 13 V ↔ 18 V transition time; eliminates overshoot and ensures reliable LNB detection. |
| Low-noise push-pull tone output | Linear regulator output stage delivers undistorted 22-kHz tone even under no-load conditions for robust DiSEqC signaling. |
Applications
| Set-Top Box Satellite Receiver | TV Satellite Receiver |
|---|---|
|
Use Scenario: Integrated LNB power supply in consumer-grade digital satellite receivers with DiSEqC-controlled multi-switch support. IC Role / Device Role / Timing Role: Provides 13.4 V/18.6 V bias and 22-kHz tone to LNB; handles voltage transitions, cable disconnect, and fault reporting via I²C. Use Value: Eliminates discrete boost + LDO + tone generator design; reduces BOM count by ≥7 components and PCB area by >30%. |
Use Scenario: Embedded satellite tuner module in smart TVs requiring compact, thermally efficient LNB power with DiSEqC 1.2 support. IC Role / Device Role / Timing Role: Delivers regulated LNB voltage with sub-millisecond 13 V ↔ 18 V transitions and precise 22-kHz tone for antenna polarization switching. Use Value: Enables single-chip solution meeting ETSI EN 301 429 timing specs; thermal pad ensures <85°C junction temp at 1 A load. |
| PC Card Satellite Receiver | Multi-Switch Distribution System |
|
Use Scenario: Low-profile satellite reception card for laptops or embedded PCs where space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Supplies LNB power and tone through mini-PCIe or USB form factor; uses I²C for host-controlled voltage/tone sequencing. Use Value: Supports 5-V input bus directly; integrated UVLO and thermal shutdown prevent host-system instability during brownouts or overheating. |
Use Scenario: Centralized LNB power unit feeding multiple satellite receivers via coaxial distribution network with DiSEqC routing. IC Role / Device Role / Timing Role: Generates clean 22-kHz tone with minimal harmonic distortion; implements cable disconnect detection to isolate faulty branches. Use Value: Maintains tone amplitude >550 mVPP across full 0–500 mA load range; diagnostic feedback enables automated network health monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LNB voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2223ETE+ | Fixed 13.5 V / 18.5 V outputs; no I²C interface; tone generated only via EXTM pin; 500-mA current limit. | Lacks programmable diagnostics and voltage fine-tuning; suitable only for non-I²C legacy designs. | Select when I²C configurability and real-time fault readback are unnecessary and cost sensitivity dominates. |
| SP2223A | Integrated 22-kHz oscillator but no boost converter; requires external 12-V supply; 800-mA current limit; no thermal shutdown. | Relies on upstream DC-DC; lacks comprehensive protection (no hiccup OCP, no OTP); limited DiSEqC feature set. | Choose only for simple, low-cost receivers with stable 12-V rail and no requirement for thermal or cable-fault diagnostics. |
Compared with MAX2223ETE+ and SP2223A, the TPS65233RTER offers superior integration (boost + LDO + tone + I²C), tighter voltage accuracy (±0.3 V vs ±0.5 V), and full DiSEqC 1.x diagnostics - making it the preferred choice for new satellite receiver designs requiring field-upgradable firmware and robust fault management.
Availability
TPS65233RTER is available at Aetrix Electronics and suitable for satellite receiver set-top boxes, smart TV tuners, and PC-based DVB-S2 capture devices requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS65233RTER 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 over 50 years of innovation in high-reliability power solutions.
The TPS65233RTER belongs to TI's LNB power management product line, designed specifically for satellite receiver front-ends requiring DiSEqC-compliant voltage regulation, tone generation, and intelligent fault handling in space-constrained applications.
FAQ
What input voltage range does the TPS65233RTER support?
The TPS65233RTER operates from 4.5 V to 20 V input, with under-voltage lockout (UVLO) activating at 4.25 V (rising) and releasing at 4.1 V (falling). This wide range supports both 5-V and 12-V power buses common in satellite receivers, and the internal 6.5-V VCC rail is self-biased - requiring only a 1-µF capacitor to AGND when VIN exceeds 5 V.
How is the 22-kHz tone generated and controlled in the TPS65233RTER?
The TPS65233RTER supports four distinct 22-kHz tone generation methods: (1) external 22-kHz signal applied to EXTM, (2) internal tone gated by EXTM logic, (3) external tone gated by TGATE, or (4) internal tone gated by TGATE. The tone amplitude is 680 mVPP with 45–55% duty cycle and ≤10 µs rise/fall times, maintained cleanly even at zero load due to its push-pull output stage.
Can the TPS65233RTER output voltage be adjusted beyond 13.4 V and 18.6 V?
No - the TPS65233RTER provides only two factory-trimmed output voltages: 13.4 V (VCTRL = low) and 18.6 V (VCTRL = high), each with ±0.3 V tolerance across load and temperature. These values are optimized for DiSEqC 1.x compliance and LNB polarization switching; no external feedback or resistor divider adjusts the nominal output level.
What happens when the TPS65233RTER detects an LNB short circuit?
Upon detecting overcurrent, the TPS65233RTER limits output current to the value set by the ISEL resistor for 4 ms. If the fault persists, it enters hiccup mode: shutting down for 128 ms before attempting restart. During fault, the open-drain FAULT pin pulls low and remains asserted until either the EN pin is cycled (non-I²C mode) or the OCP bit is read via I²C.
Is the TPS65233RTER compatible with DiSEqC 2.x or higher standards?
The TPS65233RTER is explicitly specified for DiSEqC 1.x compliance per its datasheet and functional description. While its 22-kHz tone generation, voltage transition timing, and burst capability meet DiSEqC 1.0–1.2 requirements, it does not implement DiSEqC 2.x features such as bi-directional communication or advanced message framing - those require separate microcontroller coordination.
TPS65233RTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, Satellite Set-Top Box Designs
- Voltage - Input:
- 4.5V ~ 20V
- Number of Outputs:
- 1
- Voltage - Output:
- 13.4V, 18.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS65233RTER FAQ
1.How can I place an order for TPS65233RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65233RTER 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 TPS65233RTER reliable?
The price and inventory of TPS65233RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65233RTER is usually 5 days.
3.What payment methods are accepted for TPS65233RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65233RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65233RTER?
TPS65233RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65233RTER 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 TPS65233RTER?
For technical support, including TPS65233RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65233RTER requirements.
6.How does Aetrix verify that TPS65233RTER is sourced from the original manufacturer or authorized distributors?
All TPS65233RTER 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 TPS65233RTER meets industry standards.
7.What is the process for return or replacement of TPS65233RTER?
All TPS65233RTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS65233RTER, 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 TPS65233RTER part is unused and in its original packaging.
Return procedure for TPS65233RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65233RTER Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
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…
