Datasheet L6983 (STMicroelectronics) - 8
| Manufacturer | STMicroelectronics |
| Description | 38 V 3A synchronous step-down converter with 17uA quiescent current |
| Pages / Page | 63 / 8 — L6983. Electrical characteristics. Table 6. Electrical characteristics. … |
| File Format / Size | PDF / 5.1 Mb |
| Document Language | English |
L6983. Electrical characteristics. Table 6. Electrical characteristics. Symbol. Parameter. Test conditions. Min. Typ. Max. Unit. Enable
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L6983 Electrical characteristics 5 Electrical characteristics
TJ = 25 °C, VIN = 24 V unless otherwise specified.
Table 6. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit
V Operating input voltage IN 3.5 38 V range VIN_H VCC rising threshold 2.3 3.3 V V V CC UVLO falling IN_L 2.15 3.15 V threshold No slope contribution 4.1 4.6 A IPK (1) Peak current limit Full slope contribution 3.1 3.6 A IVY Valley current limit 3.3 3.9 4.5 A ISKIP (1) (2) Skip current limit 0.6 A IVY_SINK (1) Reverse current limit LNM or VOUT overvoltage 1.25 1.5 1.75 A RDSON_HS High-side RDSON 0.130 Ω RDSON_LS Low-side RDSON 0.85 Ω TOFF_MIN Minimum off-time 200 ns TON_MIN Minimum on-time 75 ns
Enable
Rising 0.7 V VWAKE_UP Wake-up threshold Falling 0.2 V Rising 1.08 1.2 1.32 V VEN Enable threshold Hysteresis 0.2 V
VCC regulator
VCC LDO output voltage 3.0 3.3 3.6 V
Power consumption
Shutdown current from ISHTDWN V VEN = GND 2 3 μA IN
LCM device
Quiescent current from VBIAS = GND 20 35 60 μA IQ_VIN VIN VBIAS = 5 V 1 3.5 6 μA Quiescent current from IQ_VBIAS V VBIAS = 5 V 20 35 60 μA BIAS
LNM device
Quiescent current from VBIAS = GND 1.6 2.3 3 mA IQ_VIN VIN VBIAS = 5 V 300 550 800 μA Quiescent current from IQ_VBIAS V VBIAS = 5 V 1.3 1.8 2.3 mA BIAS
Soft-start DS13116
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Rev 1 page 8/63
Document Outline 1 Diagram 2 Pin configuration 3 Typical application circuit 4 Absolute maximum ratings 4.1 ESD protection 4.2 Thermal characteristics 5 Electrical characteristics 5.1 Frequency selection table 6 Functional description 6.1 Enable 6.2 Soft-start 6.3 Undervoltage lockout 6.4 Light-load operation 6.4.1 Low consumption mode (LCM) 6.4.2 Low noise mode (LNM) 6.4.3 Efficiency for low consumption mode and low noise mode part number 6.4.4 Load regulation for low consumption mode and Low noise mode part number 6.5 Switch-over feature 6.6 Spread spectrum 6.7 Overvoltage protection 6.8 Overcurrent protection 6.9 Thermal shutdown 6.10 Power Good 7 Closing the loop 7.1 GCO(s) control to output transfer function 7.2 Error amplifier compensation network 7.3 Voltage divider 8 Application notes 8.1 Programmable power up threshold 8.2 External synchronization (available for low noise mode only) 8.3 Output voltage adjustment 8.4 Switching frequency 8.5 Design of the power components 8.5.1 Input capacitor selection 8.5.2 Inductor selection 8.5.3 Output capacitor selection 9 Application board 10 Efficiency curves 11 Thermal dissipation 12 Package information 12.1 QFN16 (3x3 mm) package information 13 Ordering information Revision history
L6983 Electrical characteristics 5 Electrical characteristics
TJ = 25 °C, VIN = 24 V unless otherwise specified.
Table 6. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit
V Operating input voltage IN 3.5 38 V range VIN_H VCC rising threshold 2.3 3.3 V V V CC UVLO falling IN_L 2.15 3.15 V threshold No slope contribution 4.1 4.6 A IPK (1) Peak current limit Full slope contribution 3.1 3.6 A IVY Valley current limit 3.3 3.9 4.5 A ISKIP (1) (2) Skip current limit 0.6 A IVY_SINK (1) Reverse current limit LNM or VOUT overvoltage 1.25 1.5 1.75 A RDSON_HS High-side RDSON 0.130 Ω RDSON_LS Low-side RDSON 0.85 Ω TOFF_MIN Minimum off-time 200 ns TON_MIN Minimum on-time 75 ns
Enable
Rising 0.7 V VWAKE_UP Wake-up threshold Falling 0.2 V Rising 1.08 1.2 1.32 V VEN Enable threshold Hysteresis 0.2 V
VCC regulator
VCC LDO output voltage 3.0 3.3 3.6 V
Power consumption
Shutdown current from ISHTDWN V VEN = GND 2 3 μA IN
LCM device
Quiescent current from VBIAS = GND 20 35 60 μA IQ_VIN VIN VBIAS = 5 V 1 3.5 6 μA Quiescent current from IQ_VBIAS V VBIAS = 5 V 20 35 60 μA BIAS
LNM device
Quiescent current from VBIAS = GND 1.6 2.3 3 mA IQ_VIN VIN VBIAS = 5 V 300 550 800 μA Quiescent current from IQ_VBIAS V VBIAS = 5 V 1.3 1.8 2.3 mA BIAS
Soft-start DS13116
-
Rev 1 page 8/63
Document Outline 1 Diagram 2 Pin configuration 3 Typical application circuit 4 Absolute maximum ratings 4.1 ESD protection 4.2 Thermal characteristics 5 Electrical characteristics 5.1 Frequency selection table 6 Functional description 6.1 Enable 6.2 Soft-start 6.3 Undervoltage lockout 6.4 Light-load operation 6.4.1 Low consumption mode (LCM) 6.4.2 Low noise mode (LNM) 6.4.3 Efficiency for low consumption mode and low noise mode part number 6.4.4 Load regulation for low consumption mode and Low noise mode part number 6.5 Switch-over feature 6.6 Spread spectrum 6.7 Overvoltage protection 6.8 Overcurrent protection 6.9 Thermal shutdown 6.10 Power Good 7 Closing the loop 7.1 GCO(s) control to output transfer function 7.2 Error amplifier compensation network 7.3 Voltage divider 8 Application notes 8.1 Programmable power up threshold 8.2 External synchronization (available for low noise mode only) 8.3 Output voltage adjustment 8.4 Switching frequency 8.5 Design of the power components 8.5.1 Input capacitor selection 8.5.2 Inductor selection 8.5.3 Output capacitor selection 9 Application board 10 Efficiency curves 11 Thermal dissipation 12 Package information 12.1 QFN16 (3x3 mm) package information 13 Ordering information Revision history
