ZHCSN39A February 2020 – November 2021 LM61480 , LM61495 , LM62460
PRODUCTION DATA
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| SUPPLY VOLTAGE (VIN PIN) | ||||||
| VIN | Minimum operating input voltage | Needed to start up | 3.7 | V | ||
| Once operating | 3 | V | ||||
| VIN_OP_H | Minimum voltage hysteresis | 1 | V | |||
| IQ | Non-switching input current; measured at the VIN pin (1) | VIN =13.5 V, VFB = +5%, VBIAS = 5 V | 0.662 | 10 | μA | |
| ISD | Shutdown quiescent current; measured at the VIN pin | VEN = 0 V, VIN = 13.5 V | 0.662 | 7.5 | μA | |
| IB | Current into the BIAS pin (not switching) | VIN = 13.5 V, VFB = +5%, VBIAS = 5 V, auto mode enabled | 18.5 | 26 | μA | |
| ENABLE (EN PIN) | ||||||
| VEN | Enable input-threshold voltage – rising | VEN rising | 1.161 | 1.263 | 1.365 | V |
| VEN_HYST | Enable threshold hysteresis | 0.25 | 0.5 | V | ||
| VEN_WAKE | Enable wake-up threshold | 0.4 | V | |||
| IEN | Enable pin input current | VIN = VEN = 13.5 V | 0.3 | 50 | nA | |
| INTERNAL LDO (VCC PIN) | ||||||
| VCC | Internal VCC voltage | VIN = 13.5 V, VBIAS = 0 V | 3.4 | V | ||
| VIN = 13.5 V, VBIAS = 3.3 V, 20 mA | 3.2 | |||||
| VCC_UVLO | VIN voltage at which internal VCC undervoltage lockout is released | IVCC = 0 A | 3.7 | V | ||
| VCC_UVLO_HYST | Internal VCC undervoltage lockout hysteresis | Hysteresis below VCC_UVLO | 1.2 | V | ||
| VOLTAGE REFERENCE (FB PIN) | ||||||
| VFB_3.3V | Initial reference voltage accuracy for 3.3-V option | VIN = 5 V to 36 V, FPWM mode | 3.24 | 3.3 | 3.34 | V |
| VFB_4V | Initial reference voltage accuracy for 4-V option | VIN = 5 V to 36 V, FPWM mode | 3.9 | 4 | 4.04 | |
| VFB_5V | Initial reference voltage accuracy for 5-V option | VIN = 6 V to 36 V, FPWM mode | 4.91 | 5 | 5.06 | V |
| VFB | Initial reference voltage accuracy for adjustable (1 V FB) versions | VIN = 3.0 V to 36 V, FPWM mode | 0.99 | 1 | 1.01 | V |
| RFB | Resistance from FB to AGND | 5-V fixed option | 1.8 | MΩ | ||
| 4-V fixed option | 2.1 | |||||
| 3.3-V fixed option | 2.2 | |||||
| IFB | Input current from FB to AGND | Adjustable versions only, VFB = 1 V | 50 | nA | ||
| CURRENT LIMITS | ||||||
| ISC_6 | Short circuit high-side current Limit | 6-A variant, duty cycle approaches 0% | 8 | 10.35 | 12.6 | A |
| ILS-LIMIT_6 | Low-side current limit | 5.7 | 6.9 | 8.1 | A | |
| IPEAK-MIN_6 | Minimum peak inductor current | 1.2 | A | |||
| IL-NEG_6 | Negative current limit | –4.9 | –3.8 | –2.4 | A | |
| ISC_8 | Short circuit high-side current limit | 8-A variant, duty cycle approaches 0% | 11.5 | 13.8 | 15.6 | A |
| ILS-LIMIT_8 | Low-side current limit | 8 | 9.2 | 10.4 | A | |
| IPEAK-MIN_8 | Minimum peak inductor current | 1.6 | A | |||
| IL-NEG_8 | Negative current limit | –6.4 | –5.3 | –3.9 | A | |
| ISC_10 | Short circuit high-side current Limit | 10-A variant, duty cycle approaches 0% | 14 | 17.3 | 20 | A |
| ILS-LIMIT_10 | Low-side current limit | 9.8 | 11.5 | 12.9 | A | |
| IPEAK-MIN_10 | Minimum peak inductor current | 1.8 | A | |||
| IL-NEG_10 | Negative current limit | –6.6 | –5.3 | –4 | A | |
| IL-ZC | Zero-cross current limit. Positive current direction is out of SW pin. | Auto mode, static measurement | 10 | 200 | mA | |
| VHICCUP | Hiccup threshold on FB pin | 0.36 | 0.4 | 0.44 | V | |
| POWER GOOD (/RESET PIN) | ||||||
| V RESET-OV | RESET upper threshold – rising | % of FB voltage | 110% | 112% | 114% | |
| V RESET-UV | RESET lower threshold – falling | % of FB voltage | 92% | 94% | 96.5% | |
| V RESET_GUARD | RESET UV threshold as percentage of steady state output voltage with output voltage and UV threshold, falling, read at the same TJ, and VIN. | Falling | 97% | |||
| V RESET-HYS-FALLING | RESET falling threshold hysteresis | % of FB voltage | 0.5% | 1.3% | 2.5% | |
| V RESET-HYS-RISING | RESET rising threshold hysteresis | % of FB voltage | 0.5% | 1.3% | 2.5% | |
| V RESET_VALID | Minimum input voltage for proper RESET function | Measured when VRESET < 0.4 V with 10-k? pullup to external 5 V | 1.2 | V | ||
| VOL | RESET low-level function output voltage | 46.0-μA pullup to RESET pin, VIN = 1.0 V, VEN = 0 V | 0.4 | V | ||
| 1-mA pullup to RESET pin, VIN = 13.5 V, VEN = 0 V | 0.4 | |||||
| 2-mA pullup to RESET pin, VIN = 13.5 V, VEN = 3.3 V | 0.4 | |||||
| RRESET | RESET ON resistance | VEN = 5 V, 1-mA pullup current | 44 | 125 | Ω | |
| RRESET | RESET ON resistance | VEN = 0 V, 1-mA pullup current | 18 | 40 | Ω | |
| OSCILLATOR (SYNC/MODE PIN) | ||||||
| VSYNCDL | SYNC/MODE input voltage low | 0.4 | V | |||
| VSYNCDH | SYNC/MODE input voltage high | 1.7 | V | |||
| VSYNCD_HYST | SYNC/MODE input voltage hysteresis | 0.185 | 1 | V | ||
| RSYNC | Internal pulldown resistor to ensure SYNC/MODE does not float | 100 | kΩ | |||
| HIGH SIDE DRIVE (CBOOT PIN) | ||||||
| VCBOOT_UVLO | Voltage on CBOOT pin compared to SW which will turn off high-side switch | 1.9 | V | |||
| MOSFETS | ||||||
| RDS-ON-HS | High-side MOSFET on-resistance | Load = 1 A, CBOOT-SW = 3.2 V | 21 | 39 | mΩ | |
| RDS-ON-LS | Low-side MOSFET on-resistance | Load = 1 A, CBOOT-SW = 3.2 V | 13 | 25 | mΩ | |