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DS2437S Datasheet

  • DS2437S

  • IC-SM-BATT MONITOR

  • 1215.89KB

  • 31頁

  • DALLAS   DALLAS

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DS2437
Smart Battery Monitor
www.dalsemi.com
FEATURES
Unique 1-Wire interface requires only one
port pin for communication
Provides unique 64-bit serial number to
battery packs
Eliminates thermistors by sensing battery
temperature on-chip
On-board A/D converter allows monitoring of
battery voltage for end-of-charge and end-of-
discharge determination
On-board integrated current accumulator
facilitates gas gauging
Real-time clock in binary format
40-byte nonvolatile user memory available for
storage of user data such as gas gauge and
manufacturing information
Operating range -40擄C to +85擄C
Applications include portable computers,
portable/cellular phones, consumer
electronics, and handheld instrumentation
廬
PIN ASSIGNMENT
DQ
NC
VAD
NC
VSENS+
VSENS-
NC
AGND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
NC
NC
X1
NC
X2
NC
GND
16-PIN SSOP
See Mech. Drawings Section
PIN DESCRIPTION
DQ
VAD
VSENS+
VSENS-
NC
GND
AGND
X2
X1
V
DD
- Data In/Out
- General A/D input
- Battery current monitor input (+)
- Battery current monitor input (-)
- No connect
- Digital Ground
- Analog Ground
- Connection for 32.768 kHz XTAL
- Connection for 32.768 kHz XTAL
- Power Supply (2.7V to 10.0V)
DESCRIPTION
The DS2437 Smart Battery Monitor provides several functions that are desirable to carry in a battery
pack: a means of tagging a battery pack with a unique serial number; a direct-to-digital temperature
sensor which eliminates the need for thermistors in the battery pack; an A/D converter which measures
the battery voltage and current; an integrated current accumulator, which keeps a running total of all
current going into and out of the battery; a real-time clock; and 40 bytes of nonvolatile EEPROM
memory for storage of important parameters such as battery capacity, capacity remaining, and indication
of battery cycling.
Information is sent to/from the DS2437 over a 1-Wire interface, so that only one wire (and ground) needs
to be connected from a central microprocessor to a DS2437. This means that battery packs need only
have three output connectors: battery power, ground, and the 1-Wire interface.
Because each DS2437 contains a unique silicon serial number, multiple DS2437s can exist on the same
1-Wire bus. This allows multiple battery packs to be charged or used in the system simultaneously.
1 of 31
070600

DS2437S 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 停產(chǎn)

  • -

  • 管件

  • 停產(chǎn)

  • 電池監(jiān)控器

  • 智能電池

  • -

  • -

  • 1 線

  • -40°C ~ 85°C（TA）

  • 表面貼裝型

  • 16-SSOP（0.209"，5.30mm 寬）

  • 16-SSOP

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