TPS60400, TPS60401, TPS60402, TPS60403

UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER

SLVS324 – JULY 2001

2

POST OFFICE BOX 655303

AVAILABLE OPTIONS

PART NUMBER†

MARKING DBV

PACKAGE

TYPICAL FLYING CAPACITOR

[

µF]

FEATURE

TPS60400DBV

PFKI

1

Variable switching frequency

50 kHz–250 kHz

TPS60401DBV

PFLI

10

Fixed frequency 20 kHz

TPS60402DBV

PFMI

3.3

Fixed frequency 50 kHz

TPS60403DBV

PFNI

1

Fixed frequency 250 kHz

† The DBV package is available taped and reeled. Add R suffix to device type (e.g. TPS60400DBVR) to order quantities of

3000 devices per reel. Add T suffix to device type (e.g. TPS60400DBVT) to order quantities of 250 devices per reel.

TPS60400 functional block diagram

Start

FF

R

S

Q

VI – VCFLY+ < 0.5 V

VI

MEAS

VI < 1 V

VI

VO > Vbe

VO

MEAS

VO

OSC

OSC

CHG

50 kHz

VO > –1 V

VI / VO

MEAS

VI

VO

VCO_CONT

VO < –VI – Vbe

Phase

Generator

DC_ Startup

C(fly)

+

Q3

Q2

Q1

Q4

VI

VO

GND

Q5

Q

Q

B

DC_ Startup

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

CFLY+

5

Positive terminal of the flying capacitor C(fly)

CFLY–

3

Negative terminal of the flying capacitor C(fly)

GND

4

Ground

IN

2

I

Supply input. Connect to an input supply in the 1.6-V to 5.5-V range. Bypass IN to GND with a capacitor that has the

same value as the flying capacitor.

OUT

1

O

Power output with VO = –VI

Bypass OUT to GND with the output filter capacitor CO.