Absolute Maximum Ratings
| Parameter | Symbol | Min. | Max. | Unit |
| Supply Voltage | VIN | -0.3 | 43 | V |
| Switch Voltage | VSW | -0.3 | VIN(MAX)+0.3 | V |
| BST to SW | | -0.3 | 6.0 | V |
| All Other Pins | | -0.3 | 5.0 | V |
| Continuous Power Dissipation(TA=+25℃) | PD | | 0.57 | W |
| Junction Temperature | T | | 150 | ℃ |
| Lead Temperature | T | | 260 | ℃ |
| Storage Temperature | TSTG | -65 | 150 | ℃ |
| Operating Junction Temp | TJ | -40 | 125 | ℃ |
| Junction-to-Ambient THermal Resistance | θJA | | 220 | ℃/W |
| Junction-to-Case THermal Resistance | θJC | | 110 | ℃/W |
Electrical Characteristics
Vin=12V,Ven=2V,Tamb= 25℃,unless specified otherwise.
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
| Feedback Voltage | Vfb | | 0.778 | 0.794 | 0.810 | V |
| Upper Switch ON Resistance | Rsw | Vbst-Vsw=5V | | 500 | | mΩ |
| Upper Switch Leakage | Iswleak | Ven=0V, Vsw=0V | | 0.1 | 1 | μA |
| Limiting Current | Ilim | | | 1 | | A |
| Transconductance | Gcs | COMP to SENSE | | 3 | | A/V |
| Minimum Operating Voltage | Vin min | | 4.2 | | | V |
| UVLO Up Threshold | Vin(UVLO) | | 3.3 | | 4.2 | V |
| UVLO Hysteresis | Vin(UVLO)hys | | | 0.8 | | V |
| Soft-Start Time | Tss | FB from 0 to1.8V | | 0.5 | | ms |
| Oscillator Frequency | Fosc | | 1.4 | 1.8 | 2.2 | MHz |
| Minimum Switch ON Time | Ton min | | | 100 | | ns |
| Shutdown Current | Isd | Ven<0.3V | | 3 | 15 | μA |
| Quiescent Current | Isq | Vfb=0.9V,No load | | 200 | | μA |
| Thermal Shutdown | Temp | | | 150 | | ℃ |
| Enable up threshold | Venh | | 1.6 | | 2.0 | V |
| Enable Threshold Hysteresis | En hys | | | 0.6 | | V |
| Enable Clamp Voltage | En Vclamp | | | 7.5 | | V |
Order Information
| Part No | Package | Manner of Packing | Devices per bag/reel |
| SSP9451 | SOT23-6 | Reel | 3000 |
