TPS54810 | www.ti.com |
SLVS420B − MARCH 2002 − R EVISED FEBRUARY 2005
FUNCTIONAL BLOCK DIAGRAM
AGND | VBIAS |
| VIN |
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| Enable |
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SS/ENA |
| Comparator |
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| VBIAS | REG |
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| Falling |
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| SHUTDOWN |
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| Edge |
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| 1.2 V |
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| ILIM | VIN | 3 − 6 V |
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| Deglitch | Thermal |
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| Comparator |
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| Hysteresis: 0.03 V |
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| Leading |
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| 2.5 | ∝s | Shutdown |
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| 150°C |
| Edge |
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| VIN UVLO |
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| Blanking |
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| Comparator |
| Falling |
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| 100 ns |
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| and |
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| VIN |
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| BOOT |
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| Rising |
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| 3.8 V |
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| Edge |
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| Hysteresis: 0.16 V | Deglitch |
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| 30 mΩ |
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| 2.5 ∝s |
| SS_DIS |
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| SHUTDOWN |
| LOUT |
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| PH | VO | |
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| Internal/External |
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| + |
| R | Q | Adaptive |
| CO |
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| (Internal | − |
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| and |
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| S |
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| Error |
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| Control Logic |
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| PWM |
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| Amplifier |
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| Reference |
| Comparator |
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| VIN |
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| VREF = 0.891 V |
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| 30 mΩ |
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| OSC |
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| PGND |
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| Powergood |
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| Comparator |
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| VSENSE |
| PWRGD |
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| Falling | |
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| 0.90 Vref |
| Edge |
TPS54810 |
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| Hysteresis: 0.03 Vref | SHUTDOWN | Deglitch |
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| 35 ∝s | |
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VSENSE | COMP | RT | SYNC |
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RELATED DC/DC PRODUCTS
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DPT6600
6