TPS259483AYWPR-Texas Instruments-Price, Stock & Datasheet

The TPS25948xx family of eFuses is a highly integrated, circuit-protection and power-management solution in a small package. The devices provide multiple protection modes that use few external components and are a robust defense against overloads, short-circuits, voltage surges and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices well suited for power MUX and ORing applications, as well as systems that need load side energy hold up storage if input power supply fails. The devices use a linear ORing based scheme to ensure almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation. The devices also provide an external pin control option to disable the reverse current blocking and allow bi-directional power delivery in steady-state.

Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.

The devices are available in a 2.4mm × 1.7mm, 12-ball power wafer chip scale package (PowerWCSP) for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

Wide operating input voltage range: 3.5V to 23V
- 28V absolute maximum
- Can be powered from either IN or OUT
Integrated back-to-back FETs with low ON-resistance: RON = 12.2mΩ (typ)
Ideal diode operation with true reverse current blocking (RCB)
- External pin control (RCBCTRL) to disable RCB and allow bi-directional power delivery in steady-state to support USB OTG or DRP operation
Fast overvoltage protection
- Adjustable overvoltage lockout (OVLO) with 1µs (typ) response time
Overcurrent protection with load current monitor output (ILM)
- Active current limit response
- Adjustable threshold (ILIM) 1A–9A
  - ±10% accuracy (max) for ILIM > 3A
- Adjustable transient blanking timer (ITIMER) to allow peak currents > ILIM
- Output load current monitor accuracy: ±6% (typ) (IOUT ≥ 3A)
Fast-trip response for short-circuit protection
- < 1µs (typ) response time
- Adjustable and fixed thresholds
Active high enable input with adjustable undervoltage lockout threshold (UVLO)
Adjustable output slew rate control (dVdt)
Overtemperature protection
Digital outputs: Supply Good (SPLYGD/SPLYGD) and Fault Indication (FLT)
UL 2367 recognition (planned)
IEC 62368-1 CB certification (planned)
IEC 61000-4-5: 28V on IN
Small footprint: PowerWCSP 2.4mm × 1.7mm, 0.5mm pitch