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partNo	Package	VIN (V) (Min.)	VIN (V) (Max.)	Output Current /Current Limit (A)	R(on) (Ω) (Typ.)	VOUT (V)	Topology	VFLOAT (V) (Typ.)	VTRIKL (V) (Typ.)	ICHARGE (mA) (Max.)	IBATSLEEP (uA) (Max.)	Size (mm) (L×W)
WS4508E	SOT-23-5L	3.8	5.5		0.2		Linear	4.2	2.9	600	1	2.9 x 2.8
WS4508S	SOP-8L-EP	3.8	5.5		0.2		Linear	4.2	2.9	1000	1	4.9 x 6.0
WS4509D	DFN2020-6L	4.3	6		0.48		Linear	4.2	2.9	500	1	2.0 x 2.0
WS4509DH	DFN2020-6L	4.45	6		0.48		Linear	4.35	3	500	1	2.0 x 2.0
WS4509E	SOT23-5L	4.3	6		0.48		Linear	4.2	2.9	500	1	2.9 x 2.8
WS4509EH	SOT23-5L	4.45	6		0.48		Linear	4.35	3	500	1	2.9 x 2.8
WS4518D	DFN2020-6L	3.8	5.5		0.2		Linear	4.2	2.9	300	1	2.0 x 2.0
WS4518DH	SOT-23-6L	2.7	5.5	1	0.2	0.6V~0.8*VIN	Linear	4.35	2.96	300	1	2.0 x 2.0
WS4518E	SOT-23-5L	3.8	5.5		0.2		Linear	4.2	2.9	300	1	2.9 x 2.8
WS4519E	SOT23-6L	4.3	6		0.48		Linear	4.2	2.9	500	1	2.9 x 2.8
WS4519EH	SOT23-6L	4.45	6		0.48		Linear	4.35	3	500	1	2.9 x 2.8
WS4538D	DFN2020-8L	3.8	20		0.7		Linear	4.2	2.9	100	1	2.0 x 2.0
WS4538DH	DFN2020-8L	3.8	20		0.7		Linear	4.35	2.9	100	1	2.0 x 2.0
WS4538Q	QFN1616-12L	3.8	24		0.6		Linear +Li-ion Protector	4.2	2.9	100	1	1.6 x 1.6
WS4538QB	QFN1616-12L	3.8	24		0.6		Linear +Li-ion Protector	4.35	2.9	100	1	1.6 x 1.6