Acer 290E manual Electrical Characteristics

Electrical Characteristics

No	Parameter	Symbol	Min.	Typ.	Max.	Unit	Comment
.
1	Input	NV_PWR	9	14.8	21	V	7.5V (continuous) can
	voltage						work
							*Note 1
2	Input	Iin	--	0.33	--	A
	current
3	Lamp	IL	3.0	--	6.8	mA	DAC=0V
	current						*Note 2
4	Lamp	IL	2.7	--	6.3	mA	DAC=1V
	current
4	Frequency	F	45	55	65	KHz	* Note 3
5	Output	Pout	--	--	4.5	W
	power
6	Efficiency	η	80%	--	--	--
7	Starting	Vs	1600	--	---	V	At 0’C
	voltage
8	Starting	Tvs	1	--	1.5	Sec
	time
9	Dispoff#		2.8	3.3	3.6	V	Backlight on/off signal
			0	0.5	0.8	V	Low level
10	Limited	DAC-	0		3.3	V	*Note 2
	lamp	BRIG
	maximum
	current
11	PWM	INV_PW	142	150	158	Hz	PWM signal frequency
	signal	M
			3.0	3.3	3.6	V	PWM signal amplitude
	*Note 4
			30	--	100	%

										Duty	Ton
											= ------------------
											Period
12	Lamp	I zero-PK			--	--	10	%	Line transient (10.8V to
	current								21V/100us) and turn on
	over-shoot								transient
13	Current				1.27		1.56	Multiple		I − p
	Waveform		I p			2
	factor
										I rms
			Irms								*10
									or
14	Unbalance				-10%	0	+10%	Mulitple
	Rate	Ip −		I−p
			Irms
15	Turn off	IHl			--	--	0	A	PWM=30%
	current
	(Hight
	side)
15	Turn off	Voff			--	--	150Vp-	V	PWM=30%
	voltage						p
	(Low side)

28 Chapter 1