CAT6500 is an automatic power switch designed to select between two power sources and direct that power to a load for battery charging or system power.

CAT6500’s power inputs withstand voltages of up to 18 V and protect the downstream load from voltages exceeding 7V. In the event of a polarity reversal at either input CAT6500’s internal power switches will shut off to prevent discharge of the system’s internal power source.

功能框圖：

CAT6500功能框圖

管腳定義：

CAT6500管腳定義

引腳功能描述：

Pin No.

Pin Name

Description

1, 2, 3, 4

PWR_OUT

Power Output. Must be tied to PWR_OUT on opposite side of chip. Use all 3 pins each side.

5

NIC

No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.

6, 7, 8, 9, 10

PS2

Power Source #2. External power input

11, 12

NIC

No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.

13

VCC

Power input from battery.

14

GND

Ground. Reference point for all voltages.

15

C1

Filter capacitor for CAT6500’s internal power bus

16

NIC

No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.

17

NIC

No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.

18

PRIORITY

Priority selects preferred power source when both PS1 and PS2 are powered.

19

RM_EN2

Reverse Mode Enable 2. Overrides PRIORITY and turns SW2 ON.

20

GND

Ground. Reference point for all voltages.

21

RM_EN1

Reverse Mode Enable 1. Overrides PRIORITY and turns SW1 ON.

22

PS1

Power Source #1. External power input.

23

SW2_STAT

Power Source 2 Status. An open drain LOW true logic level output indicating that the switch SW2 is

24

SW1_STAT

Power Source 1 Status. An open drain LOW true logic level output indicating that the switch SW1 is

25, 26, 27, 28

PS1

Power Source #1. External power input.

29

NIC

No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.

30, 31, 32

PWR_OUT

Power Output. Must be tied to PWR_OUT on opposite side of chip. Use all 3 pins each side.

33

PWR_OUT

Electrically active thermal pad. Does not need to be connected to other PWR_OUTs. Can be left float-ing but must not be connected to other signal paths or Ground.

34

PS2

Electrically active thermal pad. Does not need to be connected to other PS2 pins. Can be left floating but must not be connected to other signal paths or Ground.

35

–

Mechanical support for control IC. This chip does not generate any significant heat and does not need a separate heat sinking connection. Electrically this may be left floating or can be grounded. It should NOT be connected to other signals or voltages.

36

PS1

Electrically active thermal pad. Does not need to be connected to other PS1 pins. Can be left floating but must not be connected to other signal paths or Ground.

CAT6500技術方案、應用案例、電路圖集錦

涵蓋了CAT6500的技術方案和CAT6500的應用筆記以及CAT6500的電路圖，為工程師學習CAT6500提供了一站式學習環(huán)境。