STEP-UP DC/DC CONTROLLER

2007-6-6

1/14

FSP3601

PIN ASSIGNMENT

SOP8

MSOP8

TSSOP8

PIN DESCRIPTION

Name

No.

I/O

Description

FB

1

I

Error amplifier inverting input pin

SCP

2

I

Connected a capacitor

Soft start and SCP function pin

3

P

IC Power supply

BR/CTL

4

I

Output current setting and control pin

OUT

5

O

Totem-pole output

GND

6

P

IC ground

OSC

7

I

Capacitor and resistor connected for the frequency of oscillation

COMP

8

O

Error amplifier compensation output

TYPICAL APPLICATION

Digital Camera

PDA

Portable Equipment

FSP3601

1

2

3

45

6

7

8

FB

SCP

Vcc

BR/CTL

COMP

OSC

GND

OUT

FB

SCP

Vcc

BR/CTL

COMP

OSC

GND

OUT

FSP3601

1

2

3

4

8

7

6

5

FB

SCP

Vcc

BR/CTL

COMP

OSC

GND

OUT

FSP3601

8

7

6

5

1

2

3

4

GENERAL DESCRIPTION

The FSP3601 is a boost topology switching regulator

control IC for battery-used applications field. The

FSP3601 includes a totem-pole single output stage

for driving NPN transistor or N-MOS, high precision

reference (0.5V) for comparing output voltage with

feedback amplifier, an internal dead-time control for

controlling the minimum duty cycle, programmable

soft start with short circuit protection function and

logic level control for operating mode or standby

mode.

FEATURES

Wide supply voltage operating range: 1.8 to 15V

Reference voltage precision: 4%

Low current consumption:

Operation Mode 5.5mA

Standby Mode: 1µA

High speed oscillator frequency: 1MHz max

Programmable Soft Start function (SS)

Short Circuit Protection function (SCP)

Totem-pole output with adjustable on/off current

(for NPN transistors or n-channel MOSFET)

Logic level control stand-by mode function

Package: SOP8/MSOP8/TSSOP8