ZHCSKI0A April 2018 – November 2019 TPS57112C-Q1
PRODUCTION DATA.
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| SUPPLY VOLTAGE (VIN PIN) | ||||||
| Internal undervoltage lockout threshold | VIN UVLO START (output turns on, device starts switching) | 2.45 | 2.6 | V | ||
| VIN UVLO STOP (output turns off, device stops switching) | 2.28 | 2.5 | ||||
| Shutdown supply current | V(EN) = 0 V, 25°C, 2.95 V ≤ V(VIN) ≤ 6 V | 5.5 | 15 | μA | ||
| Quiescent current – I(q) | V(VSENSE) = 0.9 V, V(VIN) = 5 V, 25°C, Rt = 400 kΩ | 515 | 750 | μA | ||
| ENABLE AND UVLO (EN PIN) | ||||||
| Enable threshold | Rising | 1.25 | V | |||
| Falling | 1.18 | |||||
| Input current | Enable threshold + 50 mV | –3.2 | μA | |||
| Enable threshold – 50 mV | –1.65 | |||||
| VOLTAGE REFERENCE (VSENSE PIN) | ||||||
| Voltage reference | 2.95 V ≤ V(VIN) ≤ 6 V, –40°C <TJ < +150°C | 0.79 | 0.8 | 0.811 | V | |
| MOSFET | ||||||
| High-side switch resistance | BOOT-PH = 5 V | 12 | 30 | mΩ | ||
| BOOT-PH = 2.95 V | 16 | 30 | ||||
| Low-side switch resistance | V(VIN) = 5 V | 13 | 30 | mΩ | ||
| V(VIN) = 2.95 V | 17 | 30 | ||||
| ERROR AMPLIFIER | ||||||
| Input current | 2 | nA | ||||
| Error amplifier transconductance (gm) | –2 μA < I(COMP) < 2 μA, V(COMP) = 1 V | 245 | µS | |||
| Error amplifier transconductance (gm) during slow start | –2 μA < I(COMP) < 2 μA, V(COMP) = 1 V,
V(VSENSE) = 0.4 V |
79 | µS | |||
| Error amplifier source or sink | V(COMP) = 1 V, 100-mV overdrive | ±20 | μA | |||
| COMP to high-side FET current gm | 14 | S | ||||
| CURRENT LIMIT | ||||||
| Current-limit threshold | 2.9 | 5.3 | A | |||
| THERMAL SHUTDOWN | ||||||
| Thermal shutdown | 168 | °C | ||||
| Hysteresis | 20 | °C | ||||
| TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN) | ||||||
| Switching frequency range using Rt mode | 200 | 2000 | kHz | |||
| Switching frequency | Rt = 400 kΩ | 400 | 500 | 600 | kHz | |
| Switching frequency range using CLK mode | 300 | 2000 | kHz | |||
| RT/CLK voltage | Rt = 400 kΩ | 0.5 | V | |||
| RT/CLK high threshold | 1.6 | 2.5 | V | |||
| Delay from RT/CLK falling edge to PH rising edge | Measure at 500 kHz with Rt resistor in series with device pin | 90 | ns | |||
| BOOT (BOOT PIN) | ||||||
| BOOT charge resistance | V(VIN) = 5 V | 16 | Ω | |||
| BOOT-PH UVLO | V(VIN) = 2.95 V | 2.1 | V | |||
| SLOW START AND TRACKING (SS/TR PIN) | ||||||
| Charge current | V(SS/TR) = 0.4 V | 2 | μA | |||
| SS/TR to VSENSE matching | V(SS/TR) = 0.4 V | 54 | mV | |||
| SS/TR to reference crossover | 98% of nominal reference voltage | 1.1 | V | |||
| SS/TR discharge voltage (overload) | V(VSENSE) = 0 V | 60 | mV | |||
| SS/TR discharge current (overload) | V(VSENSE) = 0 V, V(SS/TR) = 0.4 V | 350 | µA | |||
| SS discharge current (UVLO, EN, thermal fault) | V(VIN) = 5 V, V(SS/TR) = 0.5 V | 1.9 | mA | |||
| POWER GOOD (PWRGD PIN) | ||||||
| VSENSE threshold | V(VSENSE) falling (Fault) | 91 | %Vref | |||
| V(VSENSE) rising (Good) | 93 | |||||
| V(VSENSE) rising (Fault) | 109 | |||||
| V(VSENSE) falling (Good) | 107 | |||||
| Hysteresis | V(VSENSE) falling | 2 | %Vref | |||
| Output-high leakage | V(VSENSE) = Vref, V(PWRGD) = 5.5 V | 7 | nA | |||
| On-resistance | 56 | 100 | Ω | |||
| Output low | I(PWRGD) = 3 mA | 0.3 | V | |||
| Minimum VIN for valid output | V(PWRGD) < 0.5 V at 100 μA | 0.65 | 1.5 | V | ||