Copyright

©ANPEC Electronics Corp.

Rev. A.3 - Nov., 2005

APW7078

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Single PWM Switching Controller

Features

General Description

Applications

The A PW 7078 is a single P W M, s tep-up DC-DC

c ont roller wit h low operating volt age applic at ion

int egr at ing s oft-st art and short circ uit detect ion

function. And the oscillator switching frequency on chip

can be operated by terminating OSC pin to connect

c apac itor and resis t or for adjus t able operating

frequency. Soft-start is adjusted with external capacitor,

whic h s et s t he input current ramp. Bes ides, the

external compensation FB pin will apply the flexibility in

the dynamic loop status, which allow using small, low

equivalent series res istance (ES R) c eramic output

capacitors.

Pinouts

APW7078

1

2

3

4

5

6

7

8

INV

VDD

SCP

CTL

OUT

GND

OSC

FB

1

2

3

4

5

6

7

8

INV

VDD

SCP

CTL

OUT

GND

OSC

FB

•

2.3 to 5.5V Input Voltage Range

•

Adjustable Frequency: Maximum 1MHZ

•

Incorporates Soft-start Function

•

Built-in Short-circuit Detection Circuit (SCP)

•

Low Operating Current: Maximum to 1mA

•

Low Shutdown Current: Maximum to 1mA

•

Package: MSOP-8, TSSOP-8

•

Under Voltage Lockout

•

Lead Free Available (RoHS Compliant)

•

LCD Display Power Source

•

Camcorders VCRs, MP3 and Digital Still

Camera

•

Hand-held and Communication Instruments

•

PDAs

Ordering and Marking Information

APW7078

Package Code

X : MSOP - 8

O : TSSOP-8

Temp. Range

I : -40 to 85 C

Handling Code

TU : Tube

TR : Tape & Reel

Lead Free Code

L : Lead Free Device

Blank : Original Device

°

Handling Code

Temp. Range

Package Code

APW7078 X :

APW7078

XXX

XXXXX - Date Code

APW7078

XXXXX

APW7078 O :

XXXXX - Date Code

XX

Lead Free Code

No tes : ANPEC lea d-free produ cts co nta in mol din g comp oun ds/die attach m ate ria ls and 10 0% matte in pla te

te rmin atio n fi nish ; wh ich are full ycompl iant with Ro HS and compa tibl e wi th both SnPb an d le ad-free sold ieri ng

op era tio ns. AN PEC le ad-free produ cts me et or exceed th e l ead -free req uireme nts of IPC /JEDEC J STD -02 0C

fo r MSL classi ficati on at lea d-fre e p eak re flo w temp era ture.