| PARAMETER | SYMBOL | CONDITIONS | MIN | TYP | MAX | UNITS | |
|---|---|---|---|---|---|---|---|
| Shutdown Current | IIN_SD | VEN = 0V, TJ = +25°C | 0.005 | 0.1 | µA | ||
| Input Voltage Range | VIN | Guaranteed by input undervoltage lockout and output accuracy specifications | 1.8 | 5.5 | V | ||
| Input Undervoltage Lockout | VUVLO | RSEL > 60kΩ | VIN rising | 1.75 | 1.8 | V | |
| VIN falling | 1.65 | 1.7 | |||||
| RSEL < 60kΩ | VIN rising | 2.6 | 2.65 | ||||
| VIN falling | 2.45 | 2.5 | |||||
| Output Voltage Range | VOUT | Guaranteed by output accuracy specification (MAX38650A) | 1.2 | 3.3 | V | ||
| Guaranteed by output accuracy specification (MAX38650B) | 1.2 | 5 | |||||
| Output Accuracy | ACC | VOUT falling, when LX begins switching above 300kHz, VIN > VOUT + 0.3V, Note 3 | -1.5 | +1.5 | % | ||
| Low-Power Mode Over-Regulation Hysteresis | LPM_HYS | Hysteresis measured as a percent of target output voltage; VOUT_TARGET = 2.5V | +1.3 | +2.7 | +4 | % | |
| DC Load Regulation | ACCLD_REG | ILOAD from 1mA to 80% of IPEAK_LX | ±2.5 | % | |||
| Quiescent Supply Current into IN | IQ_IN | VEN = VIN, not switching VOUT = 104% of target voltage, VOUT_TARGET = 2.5V, TJ = +25°C | 390 | 660 | nA | ||
| Quiescent Supply Current into IN in 100% Mode | IQ_IN_DO | VEN = VIN = 2.2V, VOUT_TARGET = 2.5V, ILOAD = 0mA, TJ = +25°C | 1050 | 1680 | nA | ||
| Quiescent Supply Current into OUT | IQ_OUT | VEN = VIN, not switching VOUT = 104% of target voltage, VOUT_TARGET = 2.5V, TJ = +25°C | 15 | nA | |||
| Soft-Start Time | tSS | VOUT = 1.8V, IOUT = 0mA | 1 | ms | |||
| LX Leakage Current | ILEAK_LX | VLX = VOUT = 5.5V, VEN = 0V, TJ = +25°C | 4.5 | 100 | nA | ||
| Inductor Peak Current Limit | IPEAK_LX | Note 4 | 0.21 | 0.26 | 0.31 | A | |
| High-Side Channel Resistance | RDS_H | 325 | 525 | mΩ | |||
| Low-Side Channel Resistance | RDS_L | 150 | 250 | mΩ | |||
| Zero-Crossing Threshold | IZX_LX | VOUT = 1.2V | Note 4 | 12.5 | mA | ||
| Minimum Off-Time | tOFF_MIN | 50 | ns | ||||
| Enable Input Leakage Current | ILEAK_EN | VEN = 5.5V, TJ = +25°C | 1 | 100 | nA | ||
| Enable Voltage Threshold | VIH | VEN rising | 0.8 | 1.2 | V | ||
| VIL | VEN falling | 0.4 | 0.7 | ||||
| Active Discharge Resistance | ROUT_DIS | VEN = 0V (MAX38650A, MAX38650B) | 50 | 85 | 200 | Ω | |
| Required Select Resistor Accuracy | ACCRSEL | Guaranteed by output accuracy testing over RSEL range; use ±1% resistor from Table 1 | MAX38650A | -1 | +1 | % | |
| Select Resistor Detection Time | tRSEL | CRSEL < 2pF | MAX38650A | 240 | 600 | 1320 | µs |
| Thermal Shutdown Threshold | TSHUT | TJ rising when output turns off | 165 | °C | |||
| TJ falling when output turns on | 150 | ||||||
| Note 2: | Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization, and production tested at room temperature only. |
| Note 3: | Output accuracy in low-power mode (LPM) and does not include load, line, or ripple. |
| Note 4: | This is a static measurement. The actual peak current limit depends upon VIN, VOUT, and the inductor due to propagation delays. |
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