Fujitsu MB3891 manual Output voltage vs. load current Vsimout Chargepump

MB3891

Output voltage vs. load current	Output voltage vs. load current
(VSIMOUT Chargepump)	(VSIMOUT Chargepump)

(V)	3.00		Ta = +25 °C		(V)
	2.99
			VSIM-ON =	“H”
VSIMOUT	2.98	VCC-VISM = 5.5 V			VSIMOUT
			SIMPROG = “L”
	2.97
	2.96
voltage	2.95	VCC-VISM = 3.1 V			voltage
	2.94		VCC-VISM = 3.6 V

5.00

Ta = +25 °C

4.95VSIM-ON = “H”

4.90	SIMPROG = “H”
		VCC-VISM = 5.5 V
4.85
4.80

4.75VCC-VISM = 3.1 V VCC-VISM

Output	2.93	Output
	2.92
	2.91
	2.90

4.70

4.65

4.60

= 3.6 V

0 −5 −10 −15 −20

Load current ILOAD (mA)

0 −5 −10 −15 −20

Load current ILOAD (mA)

Ripple rejection R.R (dBm)

Ripple rejection vs. frequency

	(VSIMOUT Chargepump)
0
−20
−40
−60			Ta = +25 °C
			VBAT = VCC-VSIM = 3.6 V
			VSIM-ON = “H”
−80			SIMPROG = “H”
			VCAP+  VCAP− = 0.1		∝F
			VSIMOUT = 10	∝F
−100			VSIMOUT = 510 Ω
			10 k	100 k	1 M
10	100	1 k

Ripple rejection R.R (dBm)

Ripple rejection vs. frequency (VSIMOUT Chargepump)

0

Ta = +25 °C

VBAT = VCC-VSIM = 3.6 V

−20 VSIM-ON = “H” SIMPROG = “H”

VCAP+  VCAP− = 0.1 ∝F

−40 VSIMOUT = 10 ∝F

−60

−80

−100

10 100 1 k 10 k 100 k 1 M

Frequency f (Hz)

Ripple rejection vs. frequency (VSIMOUT Chargepump)

(dBm)	0
	−20
R.R
	−40
rejection
				VSIM-ON =		“H”
	−60			Ta = +25 °C
				VBAT = VCC-VSIM = 3.6 V
Ripple	−80			SIMPROG = “L”				∝F
				VSIMOUT = 510 Ω
				VCAP+  VCAP− = 0.1
				VSIMOUT = 10 ∝F
	−100
	10	100	1 k		10 k		100 k		1 M

Frequency f (Hz)

					Frequency f (Hz)
		Ripple rejection vs. frequency
(dBm)				(VSIMOUT Chargepump)
	0
			Ta = +25 °C
			VBAT = VCC-VSIM = 3.6 V
R.R	−20		VSIM-ON =			“H”
			SIMPROG = “L”
			VCAP+  VCAP− = 0.1 ∝F
rejection	−30		VSIMOUT = 10 ∝F
	−40
Ripple
	−80
	−100
	10	100					1 k	10 k	100 k	1 M

Frequency f (Hz)

(Continued)

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