NCP81146
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4
Table 4. ELECTRICAL CHARACTERISTICS (Unless otherwise stated: −40°C < T
A
< +125°C; 4.5 V < V
CC
< 13.2 V,
4.5 V < BST−SWN < 13.2 V, 4.5 V < BST < 30 V, 0 V < SWN < 21 V)
Parameter Test Conditions Min. Typ. Max. Units
SUPPLY VOLTAGE
VCC Operation Voltage
4.5 13.2 V
Power ON Reset Threshold 2.75 3.2 V
UNDERVOLTAGE LOCKOUT
VCC Start Threshold 3.8 4.35 4.5 V
VCC UVLO Hysteresis 150 200 250 mV
Output Overvoltage Trip Threshold at
Startup
Power Startup time, VCC > POR 2.1 2.25 2.4 V
SUPPLY CURRENT
Normal Mode Icc + Ibst, EN = 5 V, PWM = OSC, Fsw = 100 KHz,
Cload = 3 nF for DRVH, 3 nF for DRVL
10 mA
Standby Current Icc + Ibst, EN = GND 0.5 1.4 mA
Standby Current I
CC
+ I
BST
, EN = HIGH, PWM = LOW,
No loading on DRVH & DRVL
2.0 mA
Standby Current I
CC
+ I
BST
, EN = HIGH, PWM = HIGH,
No loading on DRVH & DRVL
2.0 mA
BOOTSTRAP DIODE
Forward Voltage V
CC
= 12 V, forward bias current = 2 mA 0.1 0.4 0.6 V
PWM INPUT
PWM Input High 3.4 V
PWM Mid−State 1.3 2.7 V
PWM Input Low 0.7 V
ZCD Blanking Timer 250 ns
HIGH SIDE DRIVER (VCC = 12 V)
Output Impedance, Sourcing Current VBST − VSW = 12 V 1.9 3.0 W
Output Impedance, Sinking Current VBST − VSW = 12 V 1.0 1.7 W
DRVH Rise Time trDRVH V
VCC
= 12 V, 3 nF load, VBST−VSW = 12 V 16 30 ns
DRVH Fall Time tfDRVH V
VCC
= 12 V, 3 nF load, VBST−VSW = 12 V 11 25 ns
DRVH Turn−Off Propagation Delay
tpdl
DRVH
C
LOAD
= 3 nF 8.0 30 ns
DRVH Turn−On Propagation Delay
tpdh
DRVH
C
LOAD
= 3 nF 30 ns
SW Pull Down Resistance SW to PGND 45 kW
DRVH Pull Down Resistance DRVH to SW, BST−SW = 0 V 45 kW
HIGH SIDE DRIVER (VCC = 5 V)
Output Impedance, Sourcing Current VBST − VSW = 5 V 2.5 W
Output Impedance, Sinking Current VBST − VSW = 5 V 1.6 W
DRVH Rise Time tr
DRVH
V
VCC
= 5 V, 3 nF load, VBST − VSW = 5 V 30 ns
DRVH Fall Time tf
DRVH
V
VCC
= 5 V, 3 nF load, VBST − VSW = 5 V 27 ns
DRVH Turn−Off Propagation Delay
tpdl
DRVH
C
LOAD
= 3 nF 20 ns
DRVH Turn−On Propagation Delay
tpdh
DRVH
C
LOAD
= 3 nF 27 ns
SW Pull Down Resistance SW to PGND 45 kW
