OCP3601 Controller Datasheet

OCP3601 Datasheet, PDF, Equivalent


Part Number

OCP3601

Description

Step-Up DC/DC Controller

Manufacture

OCS

Total Page 17 Pages
Datasheet
Download OCP3601 Datasheet


OCP3601
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

OCP3601
OCP3601
Step-Up DC/DC Controller
Functional Block Diagram
37
Reference
voltage
supply
0.6V-
0.1V-
1.25V
1
36kΩ
-
+
Error Amp.
0.5V
500Ω
8
Sawtooth
wave
oscillator
0.1V
PWM
Comp.
-
+
+
+
DTC0.6V
Output drive
control circuit
0.22V
5
30KΩ
Soft start SCP
62
4
Order Information
Part Number
OCP3601S
OCP3601SA
OCP3601TS
OCP3601TSA
OCP3601MS
OCP3601MSA
Operating Temperature
-10℃ ~ +85℃
-10℃ ~ +85℃
-10℃ ~ +85℃
-10℃ ~ +85℃
-10℃ ~ +85℃
-10℃ ~ +85℃
Package
SOP8
SOP8
TSSOP8
TSSOP8
MSOP8
MSOP8
Description
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Page2 - 17
Rev. 1.1 Sep 26, 2005
Free Datasheet http://www.Datasheet4U.com


Features OCP3601 Step-Up DC/DC Controller  Ge neral Description The OCP3601 is a boos t topology switching regulator control IC for battery-used applications field. The OCP3601 includes a totem-pole sing le output stage for driving NPN transis tor or N-MOS, high precision reference (0.5V) for comparing output voltage wit h feedback amplifier, an internal dead- time control for controlling the minimu m duty cycle, programmable soft start w ith short circuit protection function a nd logic level control for operating mo de or standby mode.           Features Wide sup ply voltage operating range: 1.8 to 15V Reference voltage precision: 4% Low cu rrent consumption: Operation Mode 5.5mA Standby-by Mode: 1μA High speed oscil lator frequency: 1MHz max Programmable Soft Start function (SS) Short Circuit Protection function (SCP) Totem-pole ou tput with adjustable on/off current (fo r NPN transistors or n-channel MOSFET) Logic level control stand-by mode function Package: SOP8/MSOP8/TSSOP8  Typical Appli.
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