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 Section 8.7 “Input Voltage Limitations” V_BOOST supply is derived from V_OUT. Determined by characterization; not production tested.