DS2438AZ+ Maxim Integrated Products, DS2438AZ+ Datasheet - Page 23
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DS2438AZ+
Manufacturer Part Number
DS2438AZ+
Description
IC MONITOR SMART BATTERY 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2438Z.pdf
(29 pages)
Specifications of DS2438AZ+
Function
Fuel, Gas Gauge/Monitor
Battery Type
Smart Batteries
Voltage - Supply
2.4 V ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Product
Charge Management
Operating Supply Voltage
2.4 V to 10 V
Supply Current
50 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Charge Safety Timers
No
Mounting Style
SMD/SMT
Temperature Monitoring
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
SAMPLE COMMAND SEQUENCE Table 13
Example: Bus Master issues a temperature and voltage conversion, then reads the temperature, battery
voltage, battery current, all on a single DS2438.
MASTER MODE
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
DATA (LSB FIRST)
<9 data bytes>
Presence
Presence
Presence
Presence
Presence
BEh00h
B8h00h
Reset
Reset
Reset
Reset
Reset
CCh
CCh
CCh
CCh
B4h
44h
23 of 29
Skip ROM
Skip ROM
Skip ROM
Issue Recall Memory page 00h command
Skip ROM
Read scratchpad data and CRC. This page contains
temperature, voltage, and current measurements.
Reset pulse
Presence pulse
Issue Convert Temperature command, Read Slots
Reset pulse
Presence pulse
Issue Convert Voltage command, Read Slots
Reset pulse
Presence pulse
Reset pulse
Presence pulse
Issue Read SP 00h command
Reset pulse
Presence pulse, done
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