Epson S1F70000 manual 96

S1F76640 Series

Peff[%]

100

90

80

70

60

50

40

30

20

10

0

2 times step-up Peff

4 times step-up Peff

3times step-up Peff 4 times step-up IDD

3 times step-up IDD

2 times

step-up IDD

Ta=25˚C

VDD=5V

C1 to C4=10μF

0	10	20	30
		IO[mA]

150
120
90	[mA]DD
60
	I
30
0

Peff[%]

100

90

80

70

60

50

40

30

20

10

0

										100
							2 times step-up Peff
										90
										80
											70
	3 times				step-up Peff
										60
				4 times step-up Peff								[mA]
										50
			4 times step-up IDD
				3 times						40		DD
			step-up IDD
												I
		2 times								30
	step-up IDD
										20
								Ta=25˚C
								VDD=3V		10
								C1 to C4=10μF
										0
0	5					10		15	20
						IO[mA]

S1F76640 Series

	(9) Step-up power conversion efficiency vs.																			(10) Step-up power conversion efficiency vs.
						Output current 1																			Output current 2
		Input current vs. Output current 1																			Input current vs. Output current 2
	100																	50		100
	90									2 times step-up Peff										90
	80																	40		80
	70																			70
			4 times step-up Peff
Peff[%]	60																	30	[mA]IDD	60
	40		3	times			3 times step-up Peff											20		Peff[%] 40		I	O	=2mA
	50																			50
			4 times step-up IDD
																												IO	=10mA
	30		step	-up IDD																30					IO =5mA							IO =20mA
	20											Ta=25˚C						10		20
																															Ta=25˚C
	10											VDD=2V								10										VDD=5V
												C1 to C4		=10μ		F														C1 to C4=10				μ	F
	0						2 times step-up IDD											0		0
	0		1		2		3	4	5		6	7	8		9		10			1		10					100						1000
									IO[mA]																		fOSC[kHz]
(11) Step-up power conversion efficiency vs. Output current 3																				(12) Step-up power conversion efficiency - Os vs.illation
		Input current vs. Output current 3																								frequency 1

S1F70000 Series Technical Manual

EPSON 2–53