LV8729V
No.A1702D-2/21
Allowable Operating Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage range VM VM , VM1 , VM2 9 to 32 V
Logic input voltage VIN ST , MD1 , MD2 , MD3 , OE , RST , FR , STEP 0 to 5 V
VREF input voltage range VREF 0 to 3 V
Electrical Characteristics at Ta = 25°C, VM = 24V, VREF = 1.5V
Parameter Symbol Conditions Ratings
Unit
min typ max
Standby mode current drain IMst ST = “L” , VM+VM1+VM2 70 100 μA
Current drain IM ST = “H”, OE = “H”, no load
VM+VM1+VM2
3.3 4.6 mA
Thermal shutdown temperature TSD Design guarantee 150 180 200 °C
Thermal hysteresis width ΔTSD Design guarantee 40 °C
Logic pin input current IINL ST , MD1 , MD2 , MD3 , OE , RST , FR ,
STEP , VIN = 0.8V
38 15μA
IINH ST , MD1 , MD2 , MD3 , OE , RST , FR ,
STEP , VIN = 5V
30 50 70 μA
Logic input voltage High VINH ST , MD1 , MD2 , MD3 , OE , RST , FR ,
STEP
2.0 5.0 V
Low VINL 0 0.8 V
Chopping frequency Fch Cosc1 = 100pF 70 100 130 kHz
OSC1 pin charge/discharge current Iosc1 7 10 13 μA
Chopping oscillation circuit
threshold voltage
Vtup1 0.8 1 1.2 V
Vtdown1 0.3 0.5 0.7 V
VREF pin input voltage Iref VREF = 1.5V -0.5 μA
DOWN output residual voltagr VO1DOWN Idown = 1mA 40 100 mV
MO pin residual voltage VO1MO Imo = 1mA 40 100 mV
Hold current switching frequency Fdown Cosc2 = 1500pF 1.12 1.6 2.08 Hz
Hold current switching frequency
threshold voltage
Vtup2 0.8 1 1.2 V
Vtdown2 0.3 0.5 0.7 V
VREG1 output voltage Vreg1 4.7 5 5.3 V
VREG2 output voltage Vreg2 VM 18 19 20 V
Output on-resistance Ronu IO = 1.8A, high-side ON resistance 0.35 0.455 Ω
Rond IO = 1.8A, low-side ON resistance 0.3 0.39 Ω
Output leakage current IOleak VM = 36V 50 μA
Diode forward voltage VD ID = -1.8A 1 1.4 V
Current setting reference voltage VRF VREF = 1.5V, Current ratio 100% 0.285 0.3 0.315 V
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be
indicated by the Electrical Characteristics if operated under different conditions.