ZHCSJ68A December 2018 – September 2021 LM34936-Q1
PRODUCTION DATA
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| SUPPLY VOLTAGE (VIN) | |||||||
| IQ | VIN shutdown current | VEN/UVLO = 0 V | 2.6 | 10 | μA | ||
| VIN operating current | VEN/UVLO = 2 V, VFB = 0.9 V | 2 | 4 | mA | |||
| VCC | |||||||
| VVCC(VIN) | Regulation voltage | VBIAS = 0 V, VCC open | 6.95 | 7.35 | 7.88 | V | |
| VUV(VCC) | VCC undervoltage lockout | VCC increasing | 3.11 | 3.27 | 3.43 | ||
| Undervoltage hysteresis | 176 | mV | |||||
| IVCC | VCC current limit | VVCC = 0 V | 65 | mA | |||
| ROUT(VCC) | VCC regulator output impedance | IVCC = 30 mA, VIN = 4 V | 8 | 16 | Ω | ||
| BIAS | |||||||
| VBIAS(SW) | BIAS switchover voltage | VIN = 24 V | 7.25 | 8 | 8.75 | V | |
| EN/UVLO | |||||||
| VEN(STBY) | Standby threshold | EN/UVLO rising | 0.55 | 0.82 | 0.97 | V | |
| IEN(STBY) | Standby source current | VEN/UVLO = 1.1 V | 1 | 2 | 3 | μA | |
| VEN(OP) | Operating threshold | EN/UVLO rising | 1.17 | 1.22 | 1.29 | V | |
| ΔIHYS(OP) | Operating hysteresis current | VEN/UVLO = 1.5 V | 2.15 | 3.15 | 4.25 | μA | |
| SS | |||||||
| ISS | Soft-start pullup current | VSS = 0 V | 3.75 | 5 | 6.35 | μA | |
| VSS(CL) | SS clamp voltage | SS open | 1.21 | V | |||
| VFB - VSS | FB to SS offset | VSS = 0 V | -18 | mV | |||
| EA (ERROR AMPLIFIER) | |||||||
| VREF | Feedback reference voltage | FB = COMP | 0.788 | 0.800 | 0.812 | V | |
| gmEA | Error amplifier gm | 1.31 | mS | ||||
| ISINK/ISOURCE | COMP sink/source current | VFB = VREF ± 300 mV | 280 | μA | |||
| ROUT | Amplifier output resistance | 20 | M? | ||||
| BW | Unity gain bandwidth | 2 | MHz | ||||
| IBIAS(FB) | Feedback pin input bias current | FB in regulation | 25 | nA | |||
| FREQUENCY | |||||||
| fSW(1) | Switching frequency 1 | RT = 40 k? | 175 | 200 | 225 | kHz | |
| fSW(2) | Switching frequency 2 | RT = 20 k? | 350 | 390 | 430 | ||
| DITHER | |||||||
| IDITHER | Dither source/sink current | 11 | μA | ||||
| VDITHER | Dither high threshold | 1.27 | V | ||||
| Dither low threshold | 1.16 | ||||||
| SYNC | |||||||
| VSYNC | Sync input high threshold | 2.1 | V | ||||
| Sync input low threshold | 1.2 | ||||||
| PWSYNC | Minimum sync input pulse width | 50 | ns | ||||
| CURRENT LIMIT | |||||||
| VCS(BUCK) | Buck current limit threshold (valley) | VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V | 66 | 80 | 94 | mV | |
| VCS(BOOST) | Boost current limit threshold (peak) | VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V | 100 | 120 | 140 | ||
| IBIAS(CS/CSG) | CS/CSG pin bias current | VCS = VCSG = 0 V | -80 | μA | |||
| IOFFSET(CS/CSG) | CSG pin bias current | VCS = VCSG = 0 V | 19 | ||||
| CONSTANT CURRENT LOOP | |||||||
| VSNS | Average current loop regulation target | VISNS(-) = 24 V, sweep ISNS(+), VSS = 0.8 V | 43 | 50 | 57 | mV | |
| ISNS | ISNS(+)/ISNS(–) pin bias currents | VISNS(+) = VISNS(–) = VIN = 24 V | 3 | μA | |||
| Gm | gm of soft-start pull down amplifier | VISNS(+)–VISNS(–) = 55 mV, VSS = 0.5 V | 1 | mS | |||
| SLOPE | |||||||
| ISLOPE | Buck adaptive slope current | VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V | 24 | 30 | 35 | μA | |
| Boost adaptive slope current | VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V | 13 | 17 | 21 | |||
| gmSLOPE | Slope compensation amplifier gm | 2 | μS | ||||
| MODE | |||||||
| IMODE | Source current out of MODE pin | 17 | 20 | 23 | μA | ||
| VCCM_HIC | CCM with hiccup threshold | 1.18 | 1.28 | 1.38 | V | ||
| VCCM | CCM no hiccup threshold | 2.22 | 2.4 | 2.6 | V | ||
| PGOOD | |||||||
| VPGD | PGOOD trip threshold for falling FB | Measured with respect to VREF | –9% | ||||
| PGOOD trip threshold for rising FB | Measured with respect to VREF | 10% | |||||
| Hysteresis | 2.5% | ||||||
| ILEAK(PGD) | PGOOD leakage current | 100 | nA | ||||
| ISINK(PGD) | PGOOD sink current | VPGOOD = 0.4 V | 2 | 4.2 | 6.5 | mA | |
| OUTPUT OVP | |||||||
| VOVP | Output overvoltage threshold at FB pin | Measured with respect to VREF | 10% | ||||
| Hysteresis | 2.5% | ||||||
| NMOS DRIVERS | |||||||
| IHDRV1,2 | Driver peak source current | VBOOT - VSW = 7 V | 1.8 | A | |||
| Driver peak sink current | VBOOT - VSW = 7 V | 2.2 | |||||
| ILDRV1,2 | Driver peak source current | 1.8 | |||||
| Driver peak sink current | 2.2 | ||||||
| RHDRV1,2 | Driver pullup resistance | VBOOT - VSW = 7 V | 1.8 | ? | |||
| Driver pull down resistance | VBOOT - VSW = 7 V | 1.1 | |||||
| VUV(BOOT1,2) | BOOT1,2 to SW1,2 UVLO threshold | HDRV1,2 shut off | 3.4 | V | |||
| BOOT1,2 to SW1,2 UVLO hysteresis | HDRV1,2 start switching | 150 | mV | ||||
| RLDRV1,2 | Driver pullup resistance | 1.7 | ? | ||||
| Driver pulldown resistance | 1.3 | ||||||
| tDT1 | Dead time HDRV1,2 off to LDRV1,2 on | 45 | ns | ||||
| tDT2 | Dead time LDRV1,2 off to HDRV1,2 on | 45 | |||||
| THERMAL SHUTDOWN | |||||||
| TSD | Thermal shutdown temperature | 165 | °C | ||||
| TSD(HYS) | Thermal shutdown hysteresis | 15 | |||||