ZHCSLU8A September 2020 – October 2020 TPS51397A
PRODUCTION DATA
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| SUPPLY CURRENT | ||||||
| VIN | Input voltage range | 4.5 | 24 | V | ||
| IVIN | Non-switching supply current | No load, VEN = 5V |
90 | 110 |
150 | μA |
| IVINSDN | Shutdown supply current | No load, VEN = 0V |
1 | 2 |
4 | μA |
| VCC OUTPUT | ||||||
| VCC | VCC output voltage | VIN > 5.0V | 4.85 | 5 | 5.15 | V |
| VIN = 4.5V | 4.5 | |||||
| ICC | VCC current limit |
20 | mA | |||
| FEEDBACK VOLTAGE | ||||||
| VFB | FB voltage | TJ = 25°C | 594 | 600 | 606 | mV |
| TJ = -40°C to 125°C | 591 | 600 | 609 | mV | ||
| DUTY CYCLE and FREQUENCY CONTROL | ||||||
| FSW | Switching frequency | VOUT = 2.5V |
450 | 500 |
550 | kHz |
| tON(MIN) | SW minumum on time |
30 | 60 |
100 | ns | |
| tOFF(MIN) | SW minimum off time | VFB = 0.5V |
130 | 180 | ns | |
| OOA Function | ||||||
| TOOA | Mode Operation Period |
22 | 30 |
42 | us | |
| MOSFET and DRIVERS | ||||||
| RDS(ON)H | High side switch resistance | TJ = 25°C | 17 | mΩ | ||
| RDS(ON)L | Low side switch resistance | TJ = 25°C | 5.9 | mΩ | ||
| OUTPUT DISCHARGE and SOFT START | ||||||
| RDIS | Discharge resistance | VEN = 0V |
300 | 350 |
400 | Ω |
| tSS | Soft start time | Internal soft-start time, SS pin floating |
0.5 | 1.2 |
2.5 | ms |
| ISS | Soft start charge current | 5 | μA | |||
| POWER GOOD | ||||||
| tPGDLY | PG start-up delay | PG from low to high | 1 | ms | ||
| VPGTH | PG threshold | VFB falling (fault) | 85 | % | ||
| VFB rising (good) | 90 | % | ||||
| VFB rising (fault) | 115 | % | ||||
| VFB falling (good) | 110 | % | ||||
| VPG_L | PG sink current capability | IOL = 4mA | 0.4 | V | ||
| IPGLK | PG leak current | VPGOOD = 5.5V | 1 | μA | ||
| CURRENT LIMIT | ||||||
| IOCL | Over current threshold (valley) | TJ = 25°C | 11 | 12 | 13 | A |
| TJ = -40°C to 125°C | 10.5 | 12 | 14 | A | ||
| INOCL | Negative over current threshold | 3.2 | A | |||
| LOGIC THRESHOLD | ||||||
| VENH | EN high-level input voltage | 1.2 | 1.3 | 1.4 | V | |
| VENL | EN low-level input voltage | 0.9 | 1.1 | 1.2 | V | |
| IEN | Enable internal pull down current | VEN = 0.8V | 2 | µA | ||
| OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION | ||||||
| VOVP | OVP trip threshold | 125 | % | |||
| tOVPDLY | OVP prop deglitch | 120 | us | |||
| VUVP | UVP trip threshold | 60 | % | |||
| tUVPDLY | UVP prop deglitch | 256 | us | |||
| UVLO | ||||||
| VUVLO | VIN UVLO threshold | Wake up |
4.1 | 4.2 | 4.4 | V |
| Shutdown | 3.6 | 3.7 |
3.9 | V | ||
| Hysteresis | 0.5 | V | ||||
| OVER TEMPERATURE PROTECTION | ||||||
| TOTP | OTP trip threshold(1) | Shutdown temperature | 150 | °C | ||
| TOTPHSY | OTP hysteresis(1) | Hysteresis | 20 | °C | ||