MiTAC 7521 PLUS/N service manual Outputctrl DTC Feedback, PQ20A NDC7002NNA

AB

C

PQ22

SI4435DY

SO8

D	E
PU16A	PU16B
SI4925DY	SI4925DY

25 ADINP

4

3

2 PQ8 SCK431LCSK-.5

SOT23N

		PD19			PL10
L1	A	K		L2	1	2									L3
					BEAD_120Z/100M
		EC31QS04	1		0805C			PC110
		DC2010		PC104			1	0.01U_NA	1			1		1		1
				0.01U						PC109			C255		PC102
				0603						22U_NA			10U		0.01U
			2	50V				0603
				10%						1812			1210		0603
							2	50V	2	25V		2		2
								10%					25V		50V
										20%
															10%
																2
		CHARGING	20	PR54			GND
										PF1
					2				1			2
			1
				10K				1A-1206
				0603					FUSE_1206
						PQ17
		1			S	SI2301DS
				PR55	G	SOT23_FET
1					G	S
				31.6K		D
PR53				0603	D
47K				1%
0603		D2
				PQ18
2
	PR51		D	2N7002
1		2 G	S	SOT23_FET				PU17
	47	S		1
1					PC105			9	E1				C1		8
	0603				0.1U			10							7
									E2				GND
PR52					0603B			11							6
									C2				RT
5.6M				2	50V			12							5
									VCC				CT
0603								13							4
									OUTPUTCTRL				DTC
								14							3
2									REF			FEEDBACK
								15							2
GND			2IN+						2IN-				1IN-
								16							1
									2IN+				1IN+
				1				TL594C
GND					PC103			SO16
					0.1U_NA								PC98			1
					0603B
				2	50V								0.01U
													50V		10%	2
								1		2			1	2
				1				PR70					0603
								0
					PR74			0603
					10K
					0603B
					1%
				2				PC106
					REF		1	2
								0.1U
								50V
					D/VMAIN			0603B
VDD5S_P
1
PR7				1	1
4.7K					PC18				1
0603					1U	PR19
					1206	715K					PR6
2				2	25V	0603					100K
						1%					0603
				GND	2		8	PU3B
									2
		1.25V				5	+	7
						6									BATT_ALARM 20
2							-
1				1	1		4	LMV393M
					PC16	PR18		SSOP8
					0.1U	100K
3					0603	0603
				2	50V	1%
					2
GND
							GND

							8
						3	7		PL506
						2	6	L4						L5
						1	5		1	2
						S	D
							G		33UH				1	PC521
							4		IND_CDR127_1				+			1		1
	1													22U			PC107		PC108
PR67		R200												20V			0.1U		10U	1
						1		K						ELC01_1			0603		1210
4.7K		4.7K											2			2	50V	2	25V
0603		0603				PR69			PD18
					C	100K														2
	2								EC31QS04
				B		0603B
					E				DC2010	1
						2		A			R204
					PQ19						178K		VDD5S_P			GND
					MMBT2222A						0603
											1%
		PD17								2			8
	K		A
											1.25V	3
		BAS32L											+	1	LI_OVP					1
		MLL34B						GND				2	-	PU3A
									1	1			4	LMV393M
										PC20	R30			SSOP8		NiMH#/Li				2
										0.1U	14K
										0603	0603				PD5
									2	50V	.1%		GND
										2				A			K
															BAS32L_NA
	PC96														MLL34B
													1	2						4
	0.01U_NA										VDD5
	0603											PR63
	50V												100K_NA		0603
	10%								GND	24	NiMH/Li#								3
	1	2															PQ20A			2
																	NDC7002N_NA
	1			PC94	1
PC97		PR56	1			PR58		1		1	1
				1000P
1U		100K		0603B		10K		PR65		PR66		PR71
0805		0603B		10%,X7R		0603B		249K		2K_1%		2K_1%
16V			2			1%		0603		0603		0603
	2				2			1%
								2		2	2
1	2		1		2						D	PQ23
												2N7002
	PC95			PR57							D
												SOT23_FET
	0.1U			6.19K							S	G
	25V			0603
	0603			1%							S
	20%
													1	2				+5V
													PR72
													1M
													0603					JS9
																	2		1

SHORT-SMT3

						SO8				SO8
					8			L6			5
					7		1		3		6
	1	1					2	2		4		K
									PR59
PC100		PR61	PR83
									100K
0.1U_NA		11.8K	1M
									0603B
0603		0603	0603
50V		0.1%	1%					1				A
	2	2
2IN+								2				GND
									PR509
									33K
									0603
	1	1		1				1
PR62		PR60	R202		R203			D
23.2K_NA		4.99K	976K		576K						PR508
0603		0603	0603		0603		PQ506	D
0.1%		0.1%	1%		1%		2N7002	S	G LI_OVP		2	1
	2	2		2
						SOT23_FET		S
		6	PQ21B								47K
			NDC7002N								0603
								GND
			1				VADJ_1_P 12
1		5		4
	R196
	0_NA
	0603				3			VADJ_2_P		12
2			PQ21A
				2
			NDC7002N
					1	1
					PR73		PR64
					1M		1M
					0603		0603
					2	2
							1		2
						1	PC101	PR68	1	PC99
								0.02
							470P_NA	2512		470P_NA
	GND						0603	1%		0603
						2	10%		2	10%
											GND1
						GND			GND

BATT 24,25

PD506

RLZ20C

MLL34B

4

CHARGING 20

3

2

		VADJ_2_P	VADJ_1_P
	16.60V	0	0
	16.65V	0	1
	16.70V	1	0
1	16.75V	1	1

Title	7521 plus_CHARGER
Size	Document
C		SD411670000002
	Number
Date: Tuesday, May 08, 2001			Sheet

1

Rev

02

26 of 30

ABCDE