DS2715 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS2715

NiMH Battery Pack Charge Controller

Dallas Semiconductor -> Maxim Integrated 

Note 1:

Note 2:

Note 3:

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Note 5:

Note 6:

Note 7:

DS2715: NiMH Cell Pack Charge Controller

Voltages relative to VSS.

Does not include current through VCH, RT, and DIV pins.

Below this voltage no I/O pins are active.

Does not include tolerance of RT resistor.

VBIAS and resistor tolerances must be added to determine actual threshold.

Specified temperature thresholds are only valid if recommended thermistor types are used.

Specification is guaranteed by design.

DETAILED PIN DESCRIPTION

PIN

NAME

DESCRIPTION

1

CBIAS Bypass for Internal Voltage Regulator

2

VCH

Cell Stack Charge Control Output

3

VSS

Ground Reference and Chip Supply Return

4

LED1 Charging Indicator Output

5

LED2 Done Indicator Output

6

VSS

Ground Reference and Chip Supply Return

7

CTG Connect to Ground

8

CTG Connect to Ground

9

MODE

Mode Select. Connect to VSS for linear mode of operation or CBIAS for comparator

mode of operation.

10

DIV

Thermistor Divider. Stable output to form a resistor divider for measuring

temperature on THM.

11

SNS+ Positive Current Sense. Connect to the pack side of the sense resistor.

12

SNS- Negative Current Sense. Connect to the cell stack side of the sense resistor.

13

VDD

Chip Supply Input: +4.0V to +5.5V range.

14

RT

Failsafe Timeout. Timeout is selected by an external resistor from RT to VSS.

15

THM

Thermistor Input. Connect to a thermistor located in the cell pack and a divider

resistor from the Div pin.

Battery Voltage Sense Input. Connect to a divider from the positive terminal of the

16

VBATT cell stack to measure the voltage of a single cell.

4 of 12

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