ZHCSD59F June 2012 – November 2017 LM34926
PRODUCTION DATA.
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| VCC SUPPLY | ||||||
| VCC Reg | VCC Regulator Output | VIN = 48 V, ICC = 20 mA | 6.25 | 7.6 | 8.55 | V |
| VCC Current Limit | VIN = 48 V(2) | 26 | mA | |||
| VCC UVLO Threshold (VCC increasing) | 4.15 | 4.5 | 4.9 | V | ||
| VCC UVLO Hysteresis | 300 | mV | ||||
| VCC Drop Out Voltage | VIN = 8 V, ICC = 20 mA | 2.3 | V | |||
| IIN Operating Current | Nonswitching, FB = 3 V | 1.75 | mA | |||
| IIN Shutdown Current | UVLO = 0 V | 50 | 225 | µA | ||
| UNDERVOLTAGE SENSING FUNCTION | ||||||
| UV Threshold | UV Rising | 1.19 | 1.225 | 1.26 | V | |
| UV Hysteresis Input Current | UV = 2.5 V | –10 | –20 | -29 | µA | |
| Remote Shutdown Threshold | Voltage at UVLO Falling | 0.32 | 0.66 | V | ||
| Remote Shutdown Hysteresis | 110 | mV | ||||
| REGULATION AND OVERVOLTAGE COMPARATORS | ||||||
| FB Regulation Level | Internal Reference Trip Point for Switch ON | 1.2 | 1.225 | 1.25 | V | |
| FB Overvoltage Threshold | Trip Point for Switch OFF | 1.62 | V | |||
| FB Bias Current | 60 | nA | ||||
| SWITCH CHARACTERISTICS | ||||||
| Buck Switch RDS(ON) | ITEST = 200 mA, BST-SW = 7 V | 0.8 | 1.8 | Ω | ||
| Synchronous RDS(ON) | ITEST = 200 mA | 0.45 | 1 | Ω | ||
| Gate Drive UVLO | VBST − VSW Rising | 2.4 | 3 | 3.6 | V | |
| Gate Drive UVLO Hysteresis | 260 | mV | ||||
| CURRENT LIMIT | ||||||
| Current Limit Threshold | 390 | 575 | 750 | mA | ||
| Current Limit Response Time | Time to Switch Off | 150 | ns | |||
| OFF-Time Generator (Test 1) | FB = 0.1 V, VIN = 48 V | 12 | µs | |||
| OFF-Time Generator (Test 2) | FB = 1.0 V, VIN = 48 V | 2.5 | µs | |||
| THERMAL SHUTDOWN | ||||||
| Tsd | Thermal Shutdown Temperature | 165 | °C | |||
| Thermal Shutdown Hysteresis | 20 | °C | ||||