TPS7B7702QPWPRQ1 - Dual 300mA 40V Automotive Antenna LDO | Texas Instruments
MPN: TPS7B7702QPWPRQ1 ✓ فعالTPS7B7702QPWPRQ1 نمای کلی
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. It belongs to the broader family of linear regulators (using a pass transistor in its linear region), which itself sits under the umbrella of power management ICs that include DC-DC converters, charge pumps, and battery management ICs. The TPS7B7702-Q1 is a dual-channel LDO with current sense, providing a compact, integrated solution for powering low-noise amplifiers (LNAs) in active antenna modules via a coax cable.
Key features include dual 300-mA outputs, independent adjustable output voltages from 1.5 V to 20 V, integrated current-sense outputs for load monitoring, low dropout voltage, and built-in protection (thermal shutdown, overcurrent limit, reverse-battery protection). The 16-pin HTSSOP with PowerPAD provides efficient heat dissipation for the demanding automotive underhood and cabin thermal envelope.
The TPS7B7702-Q1 architecture combines a precision bandgap reference, a high-gain error amplifier, and a low-loss sense element per channel to provide accurate regulation with simultaneous current monitoring. Each channel's sense output produces a current proportional to load, allowing an external ADC or comparator to detect open/short coax conditions without dissipating significant power.
Typical applications include automotive active antenna power supplies (AM/FM, DAB, GNSS, satellite radio), infotainment head units, and telematic control units requiring clean, regulated, monitored rails. The wide 4.5-40 V input range and 45 V load dump protection support direct connection to the 12 V automotive battery.
When designing with this device, place input/output ceramic capacitors close to the pins, solder the PowerPAD to a minimum 1 square inch of copper, and connect each current-sense pin through an external resistor to ground scaled for the downstream ADC's input range.
جایگزین‌های drop-in برای TPS7B7702QPWPRQ1 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
TPS7B7701QPWPRQ1
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TPS7B7702QPWPRQ1.A
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TPS7B7702QPWPRQ1 حداکثر مقادیر مجاز و مشخصات الکتریکی
| توپولوژی | Dual-channel LDO with current sense |
| تعداد خروجی‌ها | 2 |
| نوع خروجی | Adjustable (each channel) |
| محدوده ولتاژ خروجی | 1.5 V to 20 V |
| محدوده ولتاژ ورودی | 4.5 V to 40 V |
| Load Dump Protection | 45 V |
| Maximum Output Current (per channel) | 300 mA |
| Current Sense Output | Yes (one per channel) |
| محدوده دمای کاری | -40C to +125C |
| بسته‌بندی | 16-pin HTSSOP (PowerPAD) |
| نوع نصب | Surface Mount |
| AEC-Q100 Qualification | Qualified (Grade 1, -40C to +125C) |
| وضعیت RoHS | Compliant |
| Lead-Free | Yes |
| Protection Features | Thermal shutdown, overcurrent limit, reverse-battery protection |
| Manufacturer | Texas Instruments |
| Series | TPS7B770x-Q1 |
پیکربندی پین TPS7B7702QPWPRQ1
| پین 1 | IN — Input supply voltage (4.5 V to 40 V) |
| پین 2 | IN — Input supply voltage (4.5 V to 40 V) |
| پین 3 | EN1 — Enable for channel 1 (active high) |
| پین 4 | ADJ1/FB1 — Adjust/feedback for channel 1 output voltage |
| پین 5 | SENSE1 — Current sense output for channel 1 |
| پین 6 | OUT1 — Regulated output for channel 1 (1.5 V to 20 V) |
| پین 7 | PGND — Power ground |
| پین 8 | OUT2 — Regulated output for channel 2 (1.5 V to 20 V) |
| پین 9 | SENSE2 — Current sense output for channel 2 |
| پین 10 | ADJ2/FB2 — Adjust/feedback for channel 2 output voltage |
| پین 11 | EN2 — Enable for channel 2 (active high) |
| پین 12 | NC — Not connected (per datasheet) |
| پین 13 | NC — Not connected (per datasheet) |
| پین 14 | NC — Not connected (per datasheet) |
| پین 15 | NC — Not connected (per datasheet) |
| پین 16 | PGND — Power ground / thermal pad connection |
کاربردهای معمول
TPS7B7702QPWPRQ1 مناسب است برای 6 کاربردs: Automotive Active Antenna Power Supply, AM/FM Radio Head Unit Power Tree, GNSS / Satellite Radio Antenna Module, DAB / DAB+ Digital Broadcast Antenna, Infotainment Telematics Control Unit (TCU), Vehicle-to-Everything (V2X) Antenna Module.
Automotive Active Antenna Power Supply
The TPS7B7702QPWPRQ1's dual 300-mA LDO channels with per-channel current sensing make it purpose-built for active antenna modules. It directly powers two low-noise amplifiers (LNAs) through a coax cable, with each channel's current-sense output reporting load current back to the head unit via an ADC for open-circuit and short-to-battery diagnostics. The 4.5-40 V input with 45 V load dump protection allows direct connection to the 12 V automotive battery without preregulation.
پیشنهادی
AM/FM Radio Head Unit Power Tree
In AM/FM head units and infotainment modules, the TPS7B7702QPWPRQ1 generates clean, regulated analog rails for tuner ICs and LNAs. The LDO's low dropout and high PSRR ensure phase-noise-sensitive RF stages receive a low-ripple supply that does not degrade receiver sensitivity. The integrated current-sense outputs let the head-unit MCU monitor LNA health and detect antenna faults in real time over the vehicle CAN network.
پیشنهادی
GNSS / Satellite Radio Antenna Module
GNSS (GPS/BeiDou/Galileo) and satellite-radio active antennas require bias-tees that inject DC power up the coax to a remote LNA. The TPS7B7702QPWPRQ1 supplies the DC side of two such bias-tees from a single IC, with current sensing enabling the receiver to detect open-coax or short-circuit conditions. AEC-Q100 Grade 1 qualification ensures reliable operation across the -40C to +125C automotive temperature range.
پیشنهادی
DAB / DAB+ Digital Broadcast Antenna
Digital Audio Broadcasting (DAB/DAB+) antennas in modern vehicles often contain two LNAs (Band III and L-band) requiring separate regulated rails. The TPS7B7702QPWPRQ1 provides both rails from one IC, simplifying PCB layout and reducing component count versus two discrete single-channel LDOs. Per-channel current monitoring allows independent fault detection for each LNA path.
پیشنهادی
Infotainment Telematics Control Unit (TCU)
Telematics control units integrate eCall, remote diagnostic, and V2X communications and require clean, fault-monitored power rails for cellular and GNSS LNAs. The TPS7B7702QPWPRQ1 powers both RF chains while its integrated current sense enables the TCU MCU to report antenna health to the vehicle network. Wide 4.5-40 V input tolerates cranking transients and load dump events on the automotive battery bus.
پیشنهادی
Vehicle-to-Everything (V2X) Antenna Module
Dedicated short-range communication (DSRC) and C-V2X antennas for V2X use a 5.9 GHz LNA requiring a tightly regulated low-noise supply. The TPS7B7702QPWPRQ1's channel A can supply the V2X LNA while channel B powers a GNSS LNA, both with diagnostic current sensing for fault reporting back to the V2X host processor. AEC-Q100 Grade 1 qualification is mandatory for V2X modules operating in safety-critical automotive contexts.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای TPS7B7702QPWPRQ1 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | TPS7B7701QPWPRQ1 | TPS7B7702QPWPRQ1.A |
|---|---|---|---|
| Package | 16-HTSSOP (PowerPAD) | 16-HTSSOP (PowerPAD) - same family | 16-HTSSOP (PowerPAD) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 2 (dual) | 1 (single) | 2 (dual) |
| Output Current per Channel | 300 mA | 300 mA | 300 mA |
| Input Voltage Range | 4.5 V to 40 V (45 V load dump) | 4.5 V to 40 V (45 V load dump) | 4.5 V to 40 V (45 V load dump) |
| Output Voltage Range | 1.5 V to 20 V adjustable | 1.5 V to 20 V adjustable | 1.5 V to 20 V adjustable |
| Current Sense | Yes, one per channel | Yes, single channel | Yes, one per channel |
| AEC-Q100 Qualification | Yes (Grade 1, -40C to +125C) | Yes (Grade 1) | Yes (Grade 1) |
تفاوت‌های کلیدی
- Dual integrated current sense outputs eliminate external sense resistors (در مقابلTPS7B7701QPWPRQ1)
- 45 V load dump protection built in (در مقابلGeneric 36-V LDO alternatives)
- Adjustable output spans 1.5-20 V per channel (در مقابلFixed-output automotive LDOs)
یادداشت‌های طراحی
The 16-pin HTSSOP PowerPAD must be soldered to a copper pour of at least approximately 1 square inch on the top layer (more on inner layers) to keep junction temperature within the -40C to +125C operating range under full 600 mA combined load. Estimated: at VIN = 14 V, VOUT = 5 V, and 600 mA combined load, the IC dissipates roughly 5.4 W; without a thermal pad connection, junction temperature would exceed 150C. With proper PowerPAD soldering, the junction rise stays within safe limits at 25C ambient.
Place input capacitors (typically 1 uF to 10 uF ceramic, X7R) within 2-3 mm of the IN pins, and each channel's output capacitor (typically 2.2 uF to 22 uF ceramic, X7R, ESR < 100 mOhm) within 2-3 mm of the OUT pin. Estimated: with 22 uF ceramic output capacitors, the loop is stable across the full load range. Route the SENSE traces as short, guarded differential pairs to minimize noise pickup that would otherwise corrupt the load-current measurement.
Keep the analog ground (AGND) and power ground (PGND) separated, joining them at a single point near the IC's PGND pin. Place the feedback resistor dividers close to the ADJ pins to minimize the high-impedance feedback trace length, which would otherwise act as an antenna picking up switching noise from the vehicle's 12 V bus.
Do not operate the TPS7B7702QPWPRQ1 below the 4.5 V minimum input - the LDO cannot regulate and the current sense becomes unreliable below this threshold. Do not exceed the 300 mA per-channel rating; sustained overcurrent will trigger the internal current limit and may cause the output to fold back or shut down. Always validate the reverse-battery protection behavior with a TVS clamp on the input if the antenna module is externally accessible.
اطلاعات انطباق
AEC-Q100 Grade 1 qualified per TI product page. Q1 suffix confirms automotive qualification. RoHS and REACH compliant per DigiKey/Mouser listings. Halogen-free per TI material declaration.
