Maxim MAX9777, MAX9778 manual Power

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux

Typical Operating Characteristics (continued)

(VDD = PVDD = 5V, GND = PGND = 0V, VSHDN = 5V, CBIAS = 1µF, TA = +25°C, unless otherwise noted.)

MAX9777/MAX9778

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(HEADPHONE MODE)

	12				toc40
	10	TA = +85°C			MAX9777/78
(mA)
	8
CURRENT
	6			TA = +25°C
SUPPLY
	4	TA = -40°C
	2
	0
	4.50	4.75	5.00	5.25	5.50
		SUPPLY VOLTAGE (V)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(HEADPHONE MODE)

	12				toc40
	10	TA = +85°C			MAX9777/78
(mA)
	8
CURRENT
	6			TA = +25°C
SUPPLY
	4	TA = -40°C
	2
	0
	4.50	4.75	5.00	5.25	5.50
		SUPPLY VOLTAGE (V)

POWER DISSIPATION vs. OUTPUT POWER	EXITING POWER-DOWN
(SPEAKER MODE)	(SPEAKER MODE)

	0.8						toc42	MAX9777/78 toc43
(W)
	0.7						MAX9777/78	VDD
DISSIPATION	0.6							2V/div
	0.5							OUT_+ AND OUT_-
POWER	0.4
	0.3							1V/div
	0.2
	0.1					RL = 8Ω		OUT_+ - OUT_-
						f = 1kHz		1V/div
	0
	0	0.25	0.50	0.75	1.00	1.25	1.50	100ms/div
			OUTPUT POWER (W)

10 ______________________________________________________________________________________