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OCP3601 Datasheet

Step-Up DC/DC Controller

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OCP3601 pdf
OCP3601
Step-Up DC/DC Controller
General Description
The OCP3601 is a boost topology switching regulator control IC for battery-used applications field. The OCP3601
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-by 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
Typical Application
Digital Camera
PDA
Portable Equipment
Pin Assignment
SOP8
MSOP8
TSSOP8
FB 1
SCP 2
Vcc 3
BR/CTL 4
OCP3601
8 COMP
FB
7 OSC
SCP
6 GND
Vcc
BR/CTL
5 OUT
1
2
3
4
OCP3601
8 COMP
FB 1
7 OSC
6 GND
SCP 2
Vcc 3
5 OUT BR/CTL 4
OCP3601
8 COMP
7 OSC
6 GND
5 OUT
Pin Description
Name
FB
SCP
VCC
BR/CTL
OUT
GND
OSC
COMP
No.
1
2
3
4
5
6
7
8
I/O Description
I Error amplifier inverting input pin
I
Connected a capacitor
Soft start and SCP function pin
P IC Power supply
I Output current setting and control pin
O Totem-pole output
P IC ground
I Capacitor and resistor connected for the frequency of oscillation
O Error amplifier compensation output
Page1 - 17
Rev. 1.1 Sep 26, 2005
Free Datasheet http://www.Datasheet4U.com
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