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OCP2030 Datasheet Preview

OCP2030 Datasheet

SWITCHING BUCK REGULATOR

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OCP2030 pdf
OCP2030
SWITCHING BUCK REGULATOR
„ General Description
The OCP2030 is a buck topology of switching regulator for wide operating voltage applications field. The OCP2030
includes a high current P-MOSFET, high precision reference (0.5V) for comparing output voltage with feedback
amplifier, an internal dead-time control and oscillator for controlling the maximum duty cycle and PWM frequency, and
has power-on programmable soft start time and short circuit PMOS turn-off and auto re-start protection functions.
„ Features
z Precision feedback reference voltage: 0.5V (2%)
z Wide supply voltage operating range: 3.0 to 20V
z Low current consumption: 5.5mA
z Internal fixed oscillator frequency: Typ. 500KHz
z Programmable Soft-Start function (SS)
z Short Circuit Shutdown and Auto Re-start function(ARSCP)
z Built-in P-MOSFET for 3A loading capability
z Package: SOP8
„ Typical Application Circuit
Vin
+
1 VCC
LX 8
LX 7
OCP2030
IN- 3
2
SCP
FB
GND GND
4
56
Vout
+
„ Pin Configuration
Top View
18
27
3 OCP2030 6
45
Name
VCC
SS/SCP
IN-
FB
GND
LX
No. Status
1P
2I
3I
4O
5
6
P
7
8
O
Description
IC Power Supply (PMOS Source)
Connecting with a Soft-start &
ARSCP timing capacitor
Error Amplifier Inverting Input
Error Amplifier Compensation
Output
IC Ground
PMOS High Current Output
www.micro-bridge.com
Page1 - 8
Rev. 1.0 Jan 09, 2007



ORIENT-CHIP
ORIENT-CHIP

OCP2030 Datasheet Preview

OCP2030 Datasheet

SWITCHING BUCK REGULATOR

No Preview Available !

OCP2030 pdf
„ Block Diagram
1
Reference
Regulator
1.25V
Oscillator
3
0.5V
4
36K
500
0.7V
Soft start&Auto Re-start
S.C.P Circuits
OCP2030
SWITCHING BUCK REGULATOR
Thermal
Shuntdown
Output drive
control circuits
56
2
78
„ Absolute Maximum Ratings
Power supply voltage
Output source current
Error amplifier inverting input
Allowable dissipation
SOP8 Ta+25
Operating temperature
Storage temperature
SOP8 Lead Temperature (soldering, 10 sec)
+20V
+3A
-0.3V~+1.2V
650mW
-10+85
-55+125
+260
„ DC Electrical Characteristics
Electrical characteristics over recommended operating free-air temperature range, VCC=6V, (unless otherwise noted)
Reference
Parameter
Output voltage
Input regulation
Output voltage change with temperature
Symbol
VREF
VREF
VREF/VREF
Test Conditions
COMP connected to FB
Vcc=3.0V to 20V
TA=-10to 25
TA=25to 85
Min.
0.490
Typ.
0.5
2
1
1
Max.
0.510
12.5
2
2
Unit
V
mV
%
Soft Start (S.S.)
Parameter
S.S. Source current
Soft start threshold voltage
Symbol
ISS
VSST
Test Conditions
VSS= 0V
-
Min.
-15
0.8
Typ.
-10
0.9
Max.
-7
1.0
Unit
µA
V
www.micro-bridge.com
Page2 - 8
Rev. 1.0 Jan 09, 2007


Part Number OCP2030
Description SWITCHING BUCK REGULATOR
Maker ORIENT-CHIP
Total Page 8 Pages
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