6.2 DC Characteristics


Electrical Characteristics: Unless otherwise indicated, T_A= T_J = +25°C, V_IN = V_EN = 12V, V_BOOST – V_SW = 3.3V,  V_OUT = 3.3V, I_OUT = 100 mA, L = 8.2 µH, C_IN = 10 µF X7R Ceramic Capacitor, C_OUT = 10 µF X7R Ceramic Capacitor. Boldface specifications apply over the T_J range of -40°C to 125°C.
Parameters	Symbol	Min.	Typ.	Max.	Units	Conditions
Input Voltage	V_IN	4.1	—	48	V	Note 1
Feedback Voltage	V_FB	0.776	0.800	0.824	V	V_IN= 12V, PWM mode, Standard Part
Feedback Voltage	V_FB	0.784	0.800	0.816	V	V_IN= 12V, PWM mode, AEC-Q100 Automotive Qualified
Output Voltage Adjust Range	V_OUT	2	—	24	V	Note 2, Note 4
Feedback Voltage  Line Regulation	(ΔV_FB/V_FB)/ΔV_IN	—	0.01	—	%/V	MCP16368, V_IN= 5V to 16V
Feedback Voltage  Load Regulation	(ΔV_FB/V_FB)	—	0.3	—	%	MCP16368, I_OUT = 10 mA to 400 mA
Feedback Input Bias Current	I_FB	—	+/- 10	—	nA	Sink/Source
Undervoltage Lockout Start	UVLO_STRT	—	4	—	V	V_IN Rising
Undervoltage Lockout Stop	UVLO_STOP	—	3.6	—	V	V_IN Falling
Undervoltage Lockout  Hysteresis	UVLO_HYS	—	0.4	—	V
Switching Frequency	f_SW	1.8	2.2	2.6	MHz	PWM mode
Switching Frequency Dithering	f_SW,dither	—	+10	—	%	MCP16369
Maximum Duty Cycle	DC_MAX	—	87	—	%	Note 4
Minimum On Time	Ton_MIN	—	65	—	ns	Note 4
NMOS Switch On Resistance	R_DS(ON)	—	0.5	—	Ω	V_BOOST – V_SW = 3.3V (Note 4)
NMOS Switch Current Limit	I_N(MAX)	—	0.75	—	A	V_BOOST – V_SW = 3.3V (Note 4)
Quiescent Current – PWM	I_Q,PWM	—	1.8	3.8	mA	V_BOOST= 3.3V; MCP16368 Switching
Quiescent Current – PFM	I_Q,PFM	—	55	135	µA	V_BOOST= 3.3V; MCP16367 Switching
Quiescent Current – PFM – Non-Switching	I_Q	—	18	24	µA	V_BOOST= 3.3V; MCP16367  Non-Switching
Quiescent Current – Shutdown	I_Q,SHD	—	3	6	µA	V_OUT = EN = 0V
EN Input Logic High	V_IH	1.8	—	—	V
EN Input Logic Low	V_IL	—	—	0.4	V
EN Input Leakage Current	I_ENLK	—	0.1	0.15	µA	V_EN = 12V
Soft-Start Time	t_SS	—	1.2	—	ms	EN Low to High,  90% of V_OUT (Note 4)
Power Good Threshold	V_PG	89	93	97	%
Power Good Hysteresis	V_PG,hyst	—	3	—	%
Power Good Blanking	PG_Blanking	—	55	57	µs
Thermal Shutdown Die  Temperature	T_SD	—	155	—	°C	Note 4
Die Temperature Hysteresis	T_SDHYS	—	25	—	°C
Note: The input voltage must be > output voltage + headroom voltage; higher load currents increase the input voltage necessary for regulation. See the characterization graphs for typical input to output operating voltage range. For the conditions explained in Input Voltage Limitations. V_BOOST supply is derived from V_OUT. Determined by characterization; not production tested.