TPD7101F

2006-10-31

3

Pin Description

Pin No.

Symbol

Pin Description

1

CP2

−

Negative side connecting pin for the charge pump’s second capacitor

2

CP 1

−

Negative side connecting pin for the charge pump’s first capacitor

3

CP1

+

Positive side connecting pin for the charge pump’s first capacitor

4

CP2

+

Positive side connecting pin for the charge pump’s second capacitor

5

CPV

+

Positive side connecting pin for the charge pump’s third capacitor: Although about three times the

6

N.C.

⎯

7

External power MOSFET gate drive pin for ch1: This pin controls the external power MOSFET. Also,

when overcurrent flows in the external power MOSFET, it shuts down the gate and is latched. It is

unlatched by a low on-input.

8

Vsense1

External power MOSFET monitor pin for ch1: Overcurrent is detected by comparing the difference

9

External power MOSFET gate drive pin for ch2: This pin controls the external power MOSFET. Also,

when overcurrent flows in the external power MOSFET, it shuts down the gate and is latched. It is

unlatched by a low on input.

10

Vsense2

External power MOSFET monitor pin for ch2: Overcurrent is detected by comparing the difference

11

GND

Ground pin : shared internally with pin 12.

12

GND

Shared internally with pin 11.

13

IN2

Input pin for ch2 (active high) : This pin has a pull-down resistor (100 k

Ω typ.), so that even when it is

open-circuited, output will not turn on inadvertently.

14

IN1

Input pin for ch1 (active high) : This pin has a pull-down resistor (100 k

Ω typ.), so that even when it is

open-circuited, output will not turn on inadvertently.

15

DIAG2-1

Diagnostic output pin for ch2 (N-ch open-drain): When the overcurrent condition is detected, its output

goes low. Also, when overcurrent is detected, it remains latched until the next rising edge of input.

16

DIAG2-2

Vsense2 pins with the set overcurrent level, it outputs external power MOSFET on / off state.

17

DIAG1-1

Diagnostic output pin for ch1 (N-ch open-drain): When overcurrent condition is detected, its output

goes low; in this case, it also remains latched until the next rising edge of input.

18

DIAG1-2

Vsense1 pins with the set overcurrent level, it outputs external power MOSFET on / off state.

19

ENB

Chip inhibit pin (active low): By driving this pin high, all outputs can be turned off regardless of input

signals. This pin has a pull-up resistor (100 k

Ω typ.).