NCP81253
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3
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating Symbol Min Max
Main Supply Voltage (Note 1) V
CC
−0.3 V 6.5 V
Bootstrap Supply Voltage BST −0.3 V wrt/SW 35 V wrt/GND
40 V (v 50 ns) wrt/GND
6.5 V wrt/SW
Switch Node Voltage SW −5 V
−10 V (v 200 ns)
35 V
40 V (v 50 ns)
High−Side Driver Output DRVH −0.3 V wrt/SW
−2 V (v 200 ns) wrt/SW
BST + 0.3 V wrt/SW
Low−Side Driver Output DRVL −0.3 V
−5 V (v 200 ns)
VCC + 0.3 V
DRVH/DRVL Control Input, Enable Pin PWM, EN −0.3 V 6.5 V
Ground GND 0 V 0 V
Storage Temperature Range TSTG −55°C 150°C
Operating Junction Temperature Range TJ −40°C 150°C
Moisture Sensitivity Level MSL 1
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.
Table 3. THERMAL CHARACTERISTICS
Rating Symbol Value Unit
Thermal Characteristics, DFN8, 2x2 mm (Note 2)
Thermal Resistance, Junction−to−Air
R
q
JA
119 °C/W
2. Values based on copper area of 645 mm
2
(or 1 in
2
) of 1 oz copper thickness and FR4 PCB substrate.
Table 4. OPERATING RANGES (Note 3)
Rating
Symbol Min Max Unit
Input Voltage VCC 4.5 5.5 V
Ambient Temperature T
A
−40 100 °C
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.
3. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.
Table 5. ELECTRICAL CHARACTERISTICS VCC = 4.5 V to 5.5 V, VBST−SWN = 4.5 V to 5.5 V, BST = 4.5 V to 30 V, SW = 0 V to
21 V; for typical values T
A
= 25°C, for min/max values T
A
= −40°C to 100°C; unless otherwise noted. (Notes 4, 5)
Parameter
Test Conditions Symbol Min Typ Max Unit
SUPPLY VOLTAGE
VCC Operation Voltage
VCC 4.5 5.5 V
UNDERVOLTAGE LOCKOUT
VCC Start Threshold
VCC rising V
UVLO
3.8 4.35 4.5 V
VCC UVLO Hysteresis V
UVLO_HYS
150 200 250 mV
SUPPLY CURRENT
Shutdown Mode
ICC + IBST, EN = GND I
shutdown
1 20
mA
Normal Mode ICC + IBST, EN = 5 V, PWM = 400 kHz
No load on driver outputs.
I
normal
1.6 mA
Standby Current 1 ICC + IBST, EN = 5 V, PWM = 0 V I
standby
0.9 mA
4. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
5. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at T
J
= T
A
= 25°C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
