ZHCSJY4B July 2008 – June 2019 TPS5450-Q1
PRODUCTION DATA.
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| SUPPLY VOLTAGE (VIN PIN) | ||||||
| IQ | Quiescent current | VSENSE = 2 V, Not switching, PH pin open | 3 | 4.4 | mA | |
| Shutdown, ENA = 0 V | 18 | 50 | μA | |||
| UNDERVOLTAGE LOCKOUT (UVLO) | ||||||
| Start threshold voltage, UVLO | 5.3 | 5.5 | V | |||
| Hysteresis voltage, UVLO | 330 | mV | ||||
| VOLTAGE REFERENCE | ||||||
| Voltage reference accuracy | TJ = 25°C | 1.202 | 1.221 | 1.239 | V | |
| IO = 0 A – 5 A | 1.196 | 1.221 | 1.245 | |||
| OSCILLATOR | ||||||
| Internally set free-running frequency | 400 | 500 | 600 | kHz | ||
| Minimum controllable on time | 150 | 200 | ns | |||
| Maximum duty cycle | 87 | 89 | % | |||
| ENABLE (ENA PIN) | ||||||
| Start threshold voltage, ENA | 1.3 | V | ||||
| Stop threshold voltage, ENA | 0.5 | V | ||||
| Hysteresis voltage, ENA | 450 | mV | ||||
| Internal slow-start time (0~100%) | 5.4 | 8 | 10 | ms | ||
| CURRENT LIMIT | ||||||
| Current limit | 5.7 | 7.5 | 9.0 | A | ||
| Current limit hiccup time | 13 | 16 | 21 | ms | ||
| THERMAL SHUTDOWN | ||||||
| Thermal shutdown trip point | 135 | 162 | °C | |||
| Thermal shutdown hysteresis | 14 | °C | ||||
| OUTPUT MOSFET | ||||||
| rDS(on) | High-side power MOSFET switch | VIN = 5.5 V | 150 | mΩ | ||
| 110 | 230 | |||||