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ZHCSI81L February 2009 – May 2018 LM26420

PRODUCTION DATA.

封裝選項

機械數(shù)據(jù) (封裝 | 引腳)

PWP|20
- MHTS001H
RUM|16
- MPQF223A

散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)

PWP|20
- PPTD289A
RUM|16
- QFND453A

訂購信息

6.5 Electrical Characteristics Per Buck

Over operating free-air temperature range (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_FB	Feedback Voltage		0.788	0.8	0.812	V
ΔV_FB/V_IN	Feedback Voltage Line Regulation	V_IN = 3 V to 5.5 V		0.05		%/V
I_B	Feedback Input Bias Current			0.4	100	nA
UVLO	Undervoltage Lockout	V_IN Rising		2.628	2.9	V
	Undervoltage Lockout	V_INFalling	2	2.3		V
	UVLO Hysteresis			330		mV
F_SW	Switching Frequency	LM26420-X	1.85	2.2	2.65	MHz
F_SW	Switching Frequency	LM26420-Y	0.4	0.55	0.7
F_FB	Frequency Foldback	LM26420-X		300		kHz
F_FB	Frequency Foldback	LM26420-Y		150
D_MAX	Maximum Duty Cycle	LM26420-X	86%	91.5%
D_MAX	Maximum Duty Cycle	LM26420-Y	90%	98%
R_{DSON_TOP}	TOP Switch On Resistance	WQFN-16 Package		75	135	mΩ
R_{DSON_TOP}	TOP Switch On Resistance	HTSSOP-20 Package		70	135	mΩ
R_{DSON_BOT}	BOTTOM Switch On Resistance	WQFN-16 Package		55	100	mΩ
R_{DSON_BOT}	BOTTOM Switch On Resistance	TSSOP-20 Package		45	80	mΩ
I_{CL_TOP}	TOP Switch Current Limit	V_IN = 3.3 V	2.4	3.3		A
I_{CL_BOT}	BOTTOM Switch Reverse Current Limit	V_IN = 3.3 V	0.4	0.75		A
ΔΦ	Phase Shift Between SW₁ and SW₂		160	180	200	°
V_{EN_TH}	Enable Threshold Voltage		0.97	1.04	1.12	V
V_{EN_TH}	Enable Threshold Hysteresis			0.15		V
I_{SW_TOP}	Switch Leakage			–0.7		µA
I_EN	Enable Pin Current	Sink/Source		5		nA
V_PG-TH-U	Upper Power Good Threshold	FB Pin Voltage Rising	848	925	1,008	mV
V_PG-TH-U	Upper Power Good Hysteresis			40		mV
V_PG-TH-L	Lower Power Good Threshold	FB Pin Voltage Rising	656	710	791	mV
V_PG-TH-L	Lower Power Good Hysteresis			40		mV
I_QVINC	VINC Quiescent Current (non-switching) with both outputs on	LM26420X/Y V_FB = 0.9 V		3.3	5	mA
	VINC Quiescent Current (switching) with both outputs on	LM26420X/Y V_FB = 0.7 V		4.7	6.2	mA
	VINC Quiescent Current (shutdown)	All Options V_EN = 0 V		0.05		µA
I_QVIND	VIND Quiescent Current (non-switching)	LM26420X/Y V_FB = 0.9 V		0.9	1.5	mA
I_QVIND	VIND Quiescent Current (switching)	LM26420X V_FB = 0.7 V		11	15	mA
I_QVIND	VIND Quiescent Current (switching)	LM26420Y V_FB = 0.7 V		3.7	7.5	mA
I_QVIND	VIND Quiescent Current (shutdown)	All Options V_EN = 0 V		0.1		µA
T_SD	Thermal Shutdown Temperature			165		°C

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