Pin Function Descriptions

MOTOROLA

MC13181 Advance Information

9

2 Pin Function Descriptions

Table 5. Pin Function Description

Pin

Symbol/

Type

Description

Equivalent Internal Circuit

Notes

1VOUT2.65

VOUT2.65 Regulator

Output, LDO_2.65,

2.65 V, 65 mA Output

Bypass with

low ESR

1.0

µF

tantalum

capacitor

[Note 1]

2REFOUT

REFOUT,1.265 V

Reference Voltage

Output,

Bypass with

low ESR

470 nF

[Note 1]

3

VCC1

VCC1, Positive Supply,

Power Supply Input for

Reference Generation

and LDO_2.65

Bypass with

a 0.1

µF

close to the

part and a

1.0

µF low

ESR.

4

AGND1

AGND1 Ground, Analog

Ground for Reference

Generation and

LDO_2.65

Tie to

ground

5SGND

SGND Ground,

Substrate for LDO_2.65

and Reference

Generator

Tie to

ground

6S_INV

S_INV, Inverter Output

referenced

NOTES: 1. All capacitors are assumed to be low ESR tantalum. De-rating factor on capacitance value is assumed to be -20% to 10% over all

cases of tolerance and temperature.

2. Contact assignments are subject to change.

1

V

ref

V

CC1

ESD

C

ext

162 k

152 k

2

Band

Gap

C

ext

274 k

2.0 k

1.0 k

V

CC1

3*

to V

CC

ESD

C bypass (2)

* also pin 8

4

ESD

A ground 1

5

ESD

S ground

6*

ESD

LDO_1.85

* also pins 15 & 22