Linear DC101 User Manual

DEMO MANUAL DC101

SMART BATTERY CHARGER

LT1511 Level 2, Smart

Battery Charger Demo Board

with SMBus Interface

DESCRIPTIOU

The DC101 board is a standalone Smart Battery charger that receives Charging Voltage(), Charging Current() and AlarmWarning() commands from the Smart Battery via the System Management Bus (SMBus) and sets charging current and voltage accordingly. The charger continu-

ously monitors the built-in thermistor in the battery. The thermistor information is used by the software to inhibit charging at temperature extremes and to set charging strategy for different battery chemistries.

, LTC and LT are registered trademarks of Linear Technology Corporation.

PERFORWAUCE SUWWARY

PARAMETER	CONDITIONS	MIN	TYP	MAX	UNIT
Input Voltage		16	24	27	V
Input Current	Hardware Limited			2	A
Output Current	Software Limited	0		2.5	A
Output Voltage	Software Limited	4		20	V
Thermistor Resistance	Ni-MH Battery	3		30	kΩ
	Li-Ion Battery	0.5	1	1.5	kΩ

BLOCK DIAGRAW AUD BOARD PHOTO

DC101 Smart Battery Charger

	+	R10	SYSTEM CURRENT			DC OUT	Component Side
FROM			5V
WALL	LT1129	5V				GND
CUBE			SMB		μP
	–
						+
		LT®1511
		CHARGER	26	14		C SMBus
			PIC16C73			CLOCK (SCL)
			SHUTDOWN	15		D SMBus
		Q1	11			DATA (SDA)
				2		T THERMISTOR
		Q2	VOLTAGE PWM			–
			13
						BATTERY
	Q3		CURRENT PWM			CONNECTOR
			12
						DC101 BD

1

2

D5

3

22

Smart Battery Charger with SMBus Interface

6

23

DIAGRAATICSCHEWW

CHARGERBATTERYSMART

DC101MANUALDEMO

U3

LT1129IST-5

5V

1

VIN

VOUT

3

BOLD LINES INDICATE HIGH CURRENT PATHS

DC OUT

+

C2

E3

C17

J2

GND TAB

10μF

R17

E4

0.1μF

5V

CENTER POST

2

4

10V

1.05k

IS POSITIVE

1/10W

1%

D1

D2

D6

R16

R18

RESET

S1

RED

GRN

R10

(SMB)

(μP)

BAS16LT1 3.32k

1k

1/10W 0.05Ω

R9

1/10W

R26

5V

R5

R6

E1

DC IN

1%

1/2W

100k

1%

10k

330Ω

330Ω

24V

C10

C11

C9

D3

C8

10μF

10μF

1

28

2A

0.1μF

0.1

μ

F

MCLR–

MBRS340T3

25V

25V

RB7

E2

R11

U2

2

27

510Ω

RA0/AN0

RB6

LT1511

3

26

RA1/AN1

L1

1

24

RB5

GND

GND

4

25

RA2/AN2

20μH

2

23

Q4

RB4

SW

GND

R7

5

RA3/AN3

24

MMBT3904LT1

3.32k

RB3

BOOST

VCC1

MBRS340T3

4

21

1%

RA4

RB2

GND

VCC2

R24

R4

7

22

RA5/AN4

C9

C5

5

20

C14

RB1

GND

VCC3

10k

3.32k

8

VSS

21

0.47μF

1μF

6

19

5%

33pF

1%

RB0/INT

25V

25V

UV

PROG

9

20

7

18

R2

C4

R1

OSC1

VDD

GND

VC

301Ω

1μF

3.32k

10

OSC2

19

C1

8

17

25V

1/10W

Y1

11

VSS

0.1μF

OVP

UVOUT

1/10W

C15

RCO

18

9

16

1%

4MHz

RC7

CLP

GND

1%

33pF

12

17

Q3

CCP2

10

15

RC6

CLN

COMP2

2N7002LT1

13

16

CCP1

11

14

RC5

COMP1

BAT

14

15

SCL

12

13

R3

Q1

SDA

SENSE

SPIN

1k

R20

C16

2N7002LT1

U1

1/10W

R8

D4

200Ω

100pF

SHUTDOWN

PIC16C73-20PS

1%

0.033Ω

1/10W

50V

BAS16LT1

C3

CHARGER

1/2W

1%

33μF

ADJUSTMENT RANGE

JPR1

25V

PWM1: 3FFh = 22.4V

C12

C20

5V

R19

000h = 6V

5V

1

PWM2: 3FFh = 4.1A

10μF

10μF

R23

200Ω

RESET

2

R14

000h = 0A

25V

25V

22Ω

1/10W

3

330Ω

1%

4

+

C7

R13

R15

C18

5

SMART BATTERY

0.015μF

143k

21.5k

10μF

25V

1/10W

1/10W

6

CONNECTOR

10V

5%

0.1%

0.1%

Q2

7

J1

R12

2N7002LT1

8

AMP-787441-1

TP1 TP2 TP3 TP4 TP5

C6

9

1

100k

(+)

0.047μF

1/10W

5V

5V

5V

10

2

(+)

0.1%

R21

R22

R25

11

3

CLK

22k

22k

22k

12

4

CLK

5%

5%

5%

5

SMBCLK

DC101 SD

DATA

E5

6

SMBDATA

DATA

E6

7

(T)

INT

E7

8

(T)

9

UNLESS OTHERWISE SPECIFIED:

(–)

10

1. ALL RESISTANCES ARE IN OHMS, 1/10W, 5%

(–)

2. ALL CAPACITANCES ARE IN MICROFARADS, 50V, 10%

DEMO MANUAL DC101

SMART BATTERY CHARGER

PACKAGE DIAGRAW

TOP VIEW

GND

1

24

GND

SW

2

23

GND

BOOST

3

22

VCC1

GND

4

21

VCC2

GND

5

20

VCC3

UV

6

19

PROG

LT1511CSW

GND

7

18

VC

OVP

8

17

UVOUT

CLP

9

16

GND

CLN

10

15

COMP2

COMP1

11

14

BAT

SENSE

12

13

SPIN

SW PACKAGE

24-LEAD PLASTIC SO WIDE

PARTS LIST

REFERENCE

DESIGNATOR

QUANTITY

PART NUMBER

DESCRIPTION

VENDOR

TELEPHONE

C1, C8, C17, C19

4

12065C104KATMA

0.1μF 50V Chip Capacitor

AVX

[phone]

C2, C18

2

TAJB106M010

10μF 10V Tantalum Capacitor

AVX

[phone]

C3

1

12063G334ZAT2

0.33μF 25V Chip Capacitor

AVX

[phone]

C4, C5

2

12063G105ZATMA

1μF 25V Chip Capacitor

AVX

[phone]

C6

1

12065C473KAT

0.047μF 50V 10% Chip Capacitor

AVX

[phone]

C7

1

12063C153KAT2

0.015μF 25V 5% Chip Capacitor

AVX

[phone]

C9

1

12063G474ZAT2

0.47μF 25V Chip Capacitor

AVX

[phone]

C10, C11, C12, C20

4

THCS50E1E106Z

10μF 25V Ceramic Capacitor

Marcon

[phone] x374

C14, C15

2

1206A330KAT2

33pF 50V Chip Capacitor

AVX

[phone]

C16

1

VJ1206A101KXA

100pF 50V Chip Capacitor

Vitramon

[phone]

D1

1

SF1-BR

Red LED

Data Display Product

[phone]

D2

1

SF1-G

Green LED

Data Display Product

[phone]

D3, D5

2

MBRS340T3

Diode

Motorola

[phone]

D4, D6

2

BAS16LT1

Diode

Motorola

[phone]

J1

1

AMP-787441-1

Connector

AMP

[phone]

J2

1

CUI-PJ-002A

Connector

Cui-Stack

[phone]

JPR1

1

3801S-12-G1

12-Pin Header Jumper

Comm Con Conn.

[phone]

L1

1

CTX20-4

20μH Inductor

Coiltronics

[phone]

Q1,Q2, Q3

3

2N7002LT

N-Channel MOSFET

Motorola

[phone]

Q4

1

MMBT3904LT1

NPN Transistor

Motorola

[phone]

R1, R4, R16

3

CR32-3321F-T

3.32k 1/8W 1% Resistor

AVX

[phone]

R2

1

CR32-3010F-T

301Ω 1/8W 1% Resistor

AVX

[phone]

R3, R18

2

CR32-1001F-T

1k 1/8W 1% Resistor

AVX

[phone]

3