Linear DC101 - Manual
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Table of Contents:
- Page 2 – SMART BATTERY CHARGER; SCHE ATIC DIAGRA; Smart Battery Charger with SMBus Interface
- Page 3 – QUANTITY; PACKAGE DIAGRA; PARTS LIST
- Page 4 – OPERATIO
- Page 5 – TH; “C” Source Code; Figure 1. SMBus Waveforms Indicating Battery Address
- Page 6 – Figure 2. Software Flowchart
- Page 7 – PCB LAYOUT A D FIL; Component Side Silkscreen
- Page 8 – Solder Side; PC FAB DRAWI G
1
DEMO MANUAL DC101
SMART BATTERY CHARGER
LT1511 Level 2, Smart
Battery Charger Demo Board
with SMBus Inter face
BLOCK DIAGRA A D BOARD PHOTO
U
W
DESCRIPTIO
U
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.
PERFOR A CE SU ARY
U
W
WW
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
k
Ω
Li-Ion Battery
0.5
1
1.5
k
Ω
VOLTAGE PWM
CURRENT PWM
SHUTDOWN
DC OUT
GND
C SMBus
CLOCK (SCL)
D SMBus
DATA (SDA)
T THERMISTOR
BATTERY
CONNECTOR
+
–
5V
SMB
µ
P
Q1
Q2
Q3
DC101 BD
LT
®
1511
CHARGER
FROM
WALL
CUBE
R10
SYSTEM CURRENT
5V
LT1129
+
–
26
14
15
2
11
PIC16C73
13
12
DC101 Smart Battery Charger
Component Side
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Summary
2 DEMO MANUAL DC101 SMART BATTERY CHARGER SCHE ATIC DIAGRA W W 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 GND SW BOOST GND GND UV GND OVP CLP CLN COMP1 SENSE GND GND V CC1 V CC2 V CC3 PROG V C UV OUT GND COMP2 BAT SPIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 1...
3 DEMO MANUAL DC101 SMART BATTERY CHARGER REFERENCEDESIGNATOR QUANTITY PART NUMBER DESCRIPTION VENDOR TELEPHONE C1, C8, C17, C19 4 12065C104KATMA 0.1 µ F 50V Chip Capacitor AVX (803) 946-0362 C2, C18 2 TAJB106M010 10 µ F 10V Tantalum Capacitor AVX (207) 282-5111 C3 1 12063G334ZAT2 0.33 µ F 25V Chip ...
4 DEMO MANUAL DC101 SMART BATTERY CHARGER REFERENCEDESIGNATOR QUANTITY PART NUMBER DESCRIPTION VENDOR TELEPHONE R5, R6, R14 3 CR32-331J-T 330 Ω 1/8W 5% Resistor AVX (803) 946-0524 R7 1 BCR1/8-3322F-T 33.2k 1/8W 1% Resistor Beckman (714) 447-2345 R8 1 LR2010-01-R033-J 0.033 Ω 1/2W 5% Resistor IRC (51...
