Sony HBD-E370/E470/ E570/E870/T57 IC Block Diagrams MB-134 Board, IC308 MP2301ENE-LF-Z

HBD-E370/E470/E570/E870/T57

• IC Block Diagrams
- MB-134 Board -					IC307 MM3293DNRE
IC303 MM3141CNRE
VDD	1			5	VOUT
		REGULATOR				REGULATOR
					VDD 1		5 VOUT
GND	2		4		NC

			CURRENT					GND	2
CE	3	BIAS
			LIMIT					CE	3	4	NC
IC308 MP2301ENE-LF-Z
		5V
BS	1								0.3V
					CURRENT
IN	2								–
					SENSE	6	OSCILLATOR
					AMPLIFIER		340kHz		+
			INTERNAL					1.5V
			REGULATORS
							SHUTDOWN
							COMPARATOR
			Q	S					6ΠA
					CURRENT
			Q	R
					COMPARATOR
								2.5V
SW	3				1.2V				8		SS
							LOCKOUT
							COMPARATOR		7		EN
GND	4								0.95V
									–
									+
								0.8V	6		COMP
							ERROR
							AMPLIFIER		5		FB
IC309, 310 TPS54325PWPR

						14	VCC
			REF	REF
		VREG5		VREG5
		-30%	UV
			UVLO
VO	1		OV	PROTECTION		VREG5
				LOGIC
		+20%				13	VIN
			TSD
		REF	PWM			12	VBST
		+		CONTROL
		+
VFB	2			LOGIC
						11	SW2
VREG5	3
SS	4	SOFT START				10	SW1
GND	5			XCON
PG	6		REF			VREG5
		EN	-10%
EN	7					9	PGND2
		LOGIC		OCP		8	PGND1
					+

67