TPS77515-EP - 500mA Fast Transient LDO | Texas Instruments
MPN: TPS77515-EP β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.25 | $22.50 |
| 100 | $1.95 | $195.00 |
| 500 | $1.75 | $875.00 |
| 1,000 | $1.55 | $1,550.00 |
Drop-in alternatives for TPS77515-EP β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS77515
β Drop-Inπ Reference alternative (not in catalog)
TPS77516
β Drop-Inπ Reference alternative (not in catalog)
TPS77518
β Drop-Inπ Reference alternative (not in catalog)
TPS77525
β Drop-Inπ Reference alternative (not in catalog)
TPS77533
β Drop-Inπ Reference alternative (not in catalog)
LP3871
β Drop-Inπ Reference alternative (not in catalog)
TPS77515-EP Maximum Ratings & Electrical Characteristics
| Output Type | Fixed |
| Output Voltage | 1.5 V |
| Maximum Output Current | 500 mA |
| Input Voltage Range | 2.5 V to 10 V |
| Dropout Voltage | [DATA_NEEDED: Dropout voltage at 500mA] |
| Output Capacitor | 10 Β΅F low ESR |
| Transient Response | Fast transient response |
| Reset Output | Yes |
| Quiescent Current | [DATA_NEEDED: Quiescent current] |
| PSRR | [DATA_NEEDED: PSRR at 1kHz] |
| Operating Temperature Range | -55Β°C to 125Β°C (Enhanced Product) |
| Package | HTSSOP-20 (PowerPAD) |
| Mounting Type | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL level] |
| RoHS Status | Compliant |
TPS77515-EP Pin Configuration
| Pin 1 | IN β Input voltage |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable (active high) |
| Pin 4 | NC β No connect |
| Pin 5 | NC β No connect |
| Pin 6 | NC β No connect |
| Pin 7 | NC β No connect |
| Pin 8 | NC β No connect |
| Pin 9 | NC β No connect |
| Pin 10 | NC β No connect |
| Pin 11 | NC β No connect |
| Pin 12 | NC β No connect |
| Pin 13 | NC β No connect |
| Pin 14 | NC β No connect |
| Pin 15 | NC β No connect |
| Pin 16 | NC β No connect |
| Pin 17 | NC β No connect |
| Pin 18 | NC β No connect |
| Pin 19 | RESET β Reset output (open-drain) |
| Pin 20 | OUT β Regulated output |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS77515-EP is suitable for 6 applications: DSP Power Supply, Microcontroller Power, Battery-Powered Equipment, Industrial Control Systems, Telecommunications Equipment, Medical Devices.
DSP Power Supply
The TPS77515-EP provides a clean 1.5V rail for DSPs, ensuring stable operation during fast load transients. Its fast transient response minimizes voltage droop, and the RESET output ensures proper startup sequencing. The 500mA current capability is sufficient for many DSP cores, and the low dropout voltage maximizes efficiency in battery-powered systems.
Recommended
Microcontroller Power
For microcontrollers with a 1.5V core, the TPS77515-EP offers a reliable power solution. The RESET output can hold the MCU in reset until the voltage is stable, preventing erratic behavior. The low quiescent current extends battery life in portable devices, and the small HTSSOP-20 package fits compact PCBs.
Recommended
Battery-Powered Equipment
The TPS77515-EP's low dropout voltage allows operation from a battery until it is nearly discharged, maximizing usable capacity. Its fast transient response handles sudden load changes from wireless communication modules. The RESET output provides a power-on reset signal, ensuring reliable startup in portable instruments.
Recommended
Industrial Control Systems
In industrial environments, the TPS77515-EP's extended temperature range (-55Β°C to 125Β°C) ensures reliable operation in harsh conditions. The fast transient response maintains stable voltage for PLCs and motor controllers. The RESET output is crucial for safety systems that require a known startup state.
Recommended
Telecommunications Equipment
The TPS77515-EP provides a stable 1.5V rail for FPGAs and ASICs in networking equipment. Its fast transient response ensures minimal voltage droop during high-speed data processing. The RESET output aids in system initialization, and the low noise output is suitable for sensitive communication circuits.
Recommended
Medical Devices
The TPS77515-EP's enhanced reliability and extended temperature range make it suitable for medical devices that require high dependability. The fast transient response ensures stable power for sensors and processors. The RESET output provides a fail-safe mechanism for patient monitoring systems.
Recommended
Recommended Products Summary
Engineering reference data for TPS77515-EP β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS77515 | TPS77516 | TPS77518 | TPS77525 | TPS77533 | LP3871 |
|---|---|---|---|---|---|---|---|
| Package | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) | HTSSOP-20 (PowerPAD) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 1.5V | 1.5V | 1.6V | 1.8V | 2.5V | 3.3V | 1.5V |
| Output Current | 500mA | 500mA | 500mA | 500mA | 500mA | 500mA | 800mA |
| Input Voltage Range | 2.5V to 10V | 2.5V to 10V | 2.5V to 10V | 2.5V to 10V | 2.5V to 10V | 2.5V to 10V | 2.5V to 7V |
| Reset Output | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature Range | -55Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C |
| Enhanced Product | Yes | No | No | No | No | No | No |
Key Differentiators
- Enhanced Product reliability (vs TPS77515)
- Fast transient response (vs LP3871)
- Reset output included (vs LP3871)
Design Notes
Use a 10Β΅F low ESR ceramic capacitor on the output, placed as close to the OUT pin as possible. The input capacitor should be at least 1Β΅F. The PowerPAD must be soldered to a copper area on the PCB for thermal dissipation. Ensure adequate thermal vias to the ground plane.
The PowerPAD package provides a low thermal resistance path. For high power dissipation, ensure the PCB copper area under the PowerPAD is at least 1 square inch. Calculate junction temperature using the thermal resistance from the datasheet to avoid exceeding the maximum rating.
Do not exceed the input voltage rating of 10V. The RESET output is open-drain and requires a pull-up resistor. Ensure the output capacitor is low ESR; using a high ESR capacitor may cause instability. Verify the enable pin logic level for proper startup.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
